The Best Freelance Apache Jakarta POI Developers for Hire in July 2025

5.0/5
(27 jobs)

Hi, I'm a professional software developer with 10+ years of experience working in the software industry. I've worked on many different projects throughout my career including, enterprise scale web applications, desktop applications, databases and mobile app development. I've also spent several years working in the testing industry specialising in web and mobile automation. With my solid background of dev and test you can trust me to complete your project on time with excellent quality. Regards, Tim.

Apache Jakarta POI

Desktop Application

Web Application Development

Database

Perl

CSS

SQL

C++

PHP

HTML5

Java

JavaScript

Python

React

C

PostgreSQL

5.0/5
(4 jobs)

I have a Bachelor Degree in Computer Science and Engineering. Experienced Technology Lead with a demonstrated history of working in the information technology and services industry. Skilled in Java/J2EE stack technologies for 14+ years. I have worked on real-time projects in diverse business domains. I have good knowledge of Software Development Life Cycle (SDLC) and Agile Methodology which helps in building “High-Tech” solutions for end users and results in low maintenance costs. I thrive in unfamiliar situations and enjoy opportunities to learn and gain exposure to new ideas and experiences. I am open and willing to learn whatever is necessary to accomplish my client's goals. Thank you, I look forward to working with you.

Apache Jakarta POI

RESTful API

Spring Framework

RESTful Architecture

Spring Boot

Apache Maven

Java

Neo4j

Microservice

DevOps

J2EE

Agile Project Management

AWS Application

Kubernetes

JSON

Docker

4.9/5
(49 jobs)

I'm Huanqing Zhu, but you can call me Fusion. I have over 10 years of experience in Java development, including 5 years focusing on Big Data Processing and Visualization using Java, Scala, JavaScript, HTML5, Apache Spark, Apache Hadoop, Apache Hive, Apache Flume, Apache Hbase, Storm, Kafka, DataX, and ECharts. Throughout my career: I've assisted employers in data ingestion from various sources such as RDBMS, NoSQL databases, and files by developing utilities on OSS platforms like DataXServer (open-source on GitHub) and Realtime Page Click Statistical System (refer to Portfolio section) as a Big Data Developer. I've played a key role in building Big Data Platforms using technologies like Hadoop, Spark, Hive, HBase, Flink, Kafka, and ElasticSearch as a Big Data Architect. I've designed and developed Web Applications, including e-commerce and Report Systems, using Java, Scala, HTML5, JavaScript, CSS, Spring, Akka, Mybatis, D3JS, ExtJS, jQuery, ReactJS, ECharts, and Bootstrap CSS as a Java & Front-end Developer. I've managed full-stack teams (Java, Front-end, QA, and Operations) effectively as a Team Leader. Furthermore, I possess extensive skills and experience in Microservice design & architecture, Container Cloud (Docker, Kubernetes), Rust, and Linux. If you're seeking a reputable and reliable professional who consistently delivers results, I'm the one for you. Thank you for visiting my profile, and I look forward to hearing from you!

Apache Jakarta POI

React

Java

JavaScript

Scala

Elasticsearch

Web Development

Docker

OpenLayers

D3.js

Rust

Spring Boot

Apache Flink

Apache Kafka

Apache Spark

Apache Hadoop

5.0/5
(16 jobs)

I am a full-time QA Automation Engineer with most of my expertise in Java Selenium, Appium and Cypress and Python. I have 10 years of industry experience. I develop test automation frameworks. I do develop mobile games and android apps as a freelancer. My expertise is not just limited to one programming language.

Apache Jakarta POI

Web Hosting

Game Development

SQL

Cypress

cPanel

Selenium WebDriver

C#

TypeScript

Python

Appium

Java

Unity

PHP

Android

4.5/5
(25 jobs)

10+ Years of Full Stack & Data Expertise | MERN, MEAN, AWS, Power BI, Docker Hi, I’m Waseem Abbas, a Top Rated Upwork freelancer with over $25k earned, 100% Job Success Score, and 10+ years of experience delivering full-stack web and mobile applications, from MVPs to enterprise solutions. ✅ My Core Tech Stack Includes: • Frontend: React, Next, Angular, AngularJS, jQuery, Ajax • Backend: Node.js, Nest, Express, PHP, Laravel, Django, ASP.NET • Mobile Apps: React Native, Cordova, Swift, Android Native • Databases: MongoDB, MySQL, PostgreSQL, MariaDB • Cloud & DevOps: AWS, Google Cloud, Docker, CI/CD, Linux, Windows, Firewalls ✅ Data Analytics & BI Skills: • Power BI, Power Automate, SSRS, Tableau • Web Scraping & Data Pipelines • SQL/T-SQL | Data Engineering | Reporting Dashboards ✅ Certifications: • Microsoft Certified Data Analyst (Power BI & SQL) • MCSA: Cloud Platform Data Analysis: PowerBi, Tabular, Power Automation, trends, and insights to inform decision-making. Web Scraping: Transform web data into valuable information with advanced scraping techniques. Data Engineering: Architect robust data pipelines for seamless data processing. Web and Mobile Apps Development: I specialize in developing Hybrid and Native web and mobile applications using a variety of technologies, ensuring seamless user experiences. From email setup and delivery to application development and code generation, I cover it all. Developed Apps: -iProsper.ca/ -novelhealth.ia/ -myportal.Spraguepest.com/ -mylogbook.spraguepest.com/ -app.vidmagnet.net -app.videvolve.net -app.socialvid.net -app.video360builder.com -master.atmtahproject.com/login ✅ Why Clients Choose Me: ✔ 10+ Years of Development & Cloud Experience ✔ Fast Delivery & Clean Code ✔ Detail-Oriented with Full Ownership Mindset ✔ Excellent Communication & Collaboration Skills 💬 Let’s bring your project to life — whether it's an app, dashboard, data pipeline, or cloud deployment. Message me today and let’s build something great. Github: asyncinnovations@gmail.com Thanks a million. Regards, Waseem Abbas

Apache Jakarta POI

NodeJS Framework

React Native

UX & UI

Flutter

iOS Development

SaaS

ASP.NET

Laravel

Vue.js

Django

Node.js

React

Angular

AngularJS

MySQL

5.0/5
(18 jobs)

🚀 Profile Summary: I am a passionate Software Engineer currently immersed in the world of Java Spring-Boot, Python Django, and Node.js REST frameworks. With a strong foundation in both development and deployment, I bring a wealth of hands-on experience to the table. 🛠️ Key Expertise: 1️⃣ Designing Database Structures 2️⃣ Writing Clean Code 3️⃣ Crafting Complex RESTful APIs 4️⃣ CI/CD using Jenkins 5️⃣ SLF4J Logging 6️⃣ Lombok 7️⃣ PostgreSQL 8️⃣ MongoDB 9️⃣ GitHub Version Control 🔟 VPS Deployment & GitHub Actions 💡 Additional Information: I thrive on challenges and take pride in delivering elegant solutions. My focus on clean code ensures maintainability and scalability, while my expertise in CI/CD streamlines the deployment process. With a keen eye for detail and a commitment to continuous learning, I am dedicated to driving innovation and excellence in every project I undertake. Let's collaborate and elevate your next endeavor together! 🚀

Apache Jakarta POI

Spring Framework

Django

Spring Boot

Software Development

C++

Web Application

Product Development

Java

4.9/5
(11 jobs)

Hello👋 Are you looking for experienced and certified Java engineers to boost your project? You are on the right page! Clear Solutions team provides Java engineers and grows their skills for you. We have more than 12 years of experience in IT and 8+ in Java. My team and I are happy to provide: 🚀 Java developers with transparent knowledge for transparent rates 🚀 People development services: technical assessments, mentoring, evaluation etc. Based on more than 500 interviews and technical assessments we made in the industry so far we created our own evaluation scale. Therefore you always know what set of knowledge you pay for each grade. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow ✅ I have an experience in the following: 👉 migration from on prem to AWS 👉 building microservce architecture from scratch 👉 delivering robust and high-quality code with unit tests 👉 building java high-load and distributed applications 👉 migration from monolith to microservices 👉 building the right engineering culture inside the company 👉 mentoring technical leaders Tech Stack: 🔹 Languages: Java 8, Java 16, Groovy. Spring boot, RESTful API, DB design, 🔸 Frameworks: Spring, Spring Boot, Hibernate, Spring Data 🔹 Clouds: AWS 🔸 SQL: PostgreSQL, MariaDB, Oracle 🔹 NoSQL: Elasticsearch, Redis, MongoDB, Cassandra, DynamoDB 🔸 Message brockers: Apache Kafka or RabbitMQ 🔹 Testing: Junit5, Testcontainers, Spock, RestAssured We have expertise in the following fields: ✅ FinTech, ✅ Trading, ✅ Cryptocurrency, ✅ Banking, ✅ Data processing, ✅ Healthcare, ✅ Social Networking and more. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow As a Backend Developer, I specialize in building robust Java Applications using Core Java, Spring Framework, and Spring Boot 3, leveraging tools like Maven, Gradle, and Bazel for efficient builds, and integrating Hibernate, JPA, and Apache POI for database and document handling. I have extensive experience with RESTful Architecture and SOAP for designing APIs, ensuring Application Security, and implementing testing frameworks like JUnit, JUnit5, Mochito, and AssertJ. I work across diverse environments, including Docker, AWS, Amazon Elastic Beanstalk, AWS Lambda, Google Cloud, and Azure (Azure Cosmos DB), utilizing databases like PostgreSQL, MySQL, MongoDB, Oracle Database, Microsoft SQL Server, IBM Db2, and RabbitMQ. On the frontend, I use HTML, CSS, JavaScript, TypeScript, Angular, AngularJS, and React, collaborating seamlessly using tools like Jira. For messaging and event-driven architecture, I rely on Apache Kafka, Apache ActiveMQ, and RabbitMQ, and for advanced testing, I employ Testcontainers. With a focus on Software Architecture & Design, I also develop Standalone Applications, Desktop Applications, and Web Services, ensuring scalable, secure solutions for enterprise systems and Microservices Architecture.

Apache Jakarta POI

Amazon Web Services

MySQL

MongoDB

Spring Boot

Kubernetes

RabbitMQ

RESTful API

Elasticsearch

Docker

Hibernate

Spring Framework

Java

SQL

Apache Kafka

4.9/5
(11 jobs)

I have been doing large scale website scraping since 2016 so I know every loopholes and tricks to scrape almost every websites out there, small or big. I like challenges so feel free to invite and test me. I'm a full time Data Mining engineer, I have 7 years of experience in web scraping, data mining, data extraction and API integrations, through working on a wide range of projects. I've developed and maintained scraping engines that extract data from over 800 different websites with 20 million data point every single day. I only accept a contract if I'm 100% sure I can finish the project. So you dont need to worry about getting your time wasted with half done works. ✅ Scraping tools: Python, Django, Requests, Selenium, Scrapy, BeautifulSoap ✅ Deliverables: Excel, CSV, JSON, XML, MySQL, MongoDB, SQLite ✅ AWS: EC2, RDS, S3, Lambda ✅ Google Cloud: Cloud function, BigQuery, CloudSQL, Compute Engine (cloud server) Scraping methods: 🏆 Proxy to prevent IP ban 🏆 Multi-threading to speed up the scraping process 🏆 Cookie injection to access websites that requires authentication. 🏆 Plus lots of web scraping tips and tricks that I have learnt over the past 7 years

Apache Jakarta POI

Selenium

HTML5

Data Scraping

Web Crawling

CSS 3

MySQL

Apache POI

Django

Python

5.0/5
(120 jobs)

My name is Saul Hidalgo, a Computer Engineer with a passion for developing Java and .Net software. I have been fortunate to work with exceptional teams and have had the opportunity to contribute to various sectors, including National Security/Defense in the United Kingdom, Oil companies, and Universities such as Harvard Business Publishing. The software I have created is currently being successfully utilized by these organizations. I thrive on new challenges and continuously seek opportunities to expand my skills. You can explore my public contributions on my GitHub account: saulhidalgoaular. Below are my areas of expertise and skills: 1. Code Translation and Conversion: - Proficient in translating code across various languages, with expertise in Python, Java, Delphi, C++, and C#. 2. Document Management System (DMS) - OpenKM: - Extensive experience in developing workflows, automations, cron tasks, and integrations using the Java/PHP API. - Configuration of daily backups. - Skilled in utilizing OpenKM as a DMS. 3. Algorithms and Programming: - Strong command over algorithms and programming skills, particularly in C/C++ and Java. - In-depth knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, algorithms for graphs, dynamic programming, and computational geometry. 4. Accounting: - Well-versed in managing material movement between stores and shops. - Proficient in handling retail-related accounting tasks. 5. Point of Sale (POS) Area: - Experience in integrating POS software with label printers, fiscal printers, barcode readers, fingerprint scanners, and keyboards.

Apache Jakarta POI

Core Java

Microsoft Excel

Document Management System

API

Algorithm Development

Data Structures

API Development

Hibernate

Object-Oriented Programming

Java

.NET Framework

MySQL

Desktop Application

C++

5.0/5
(32 jobs)

Cloud DevOps Engineer and System Administrator with more than 14 years of experience working in IT. I am specialized in cloud platforms such as AWS (Most experienced), GCP, Azure and DigitalOCean, especially using tools like Docker, Kubernetes, Terraform, Ansible, always focused on creating a very secure and highly available environment with great performance, monitoring, and cost optimization. I'm also specialized in Linux platforms (Red Hat, CentOS, CoreOS, Ubuntu) and Windows as well. Deep Experience with Linux, Windows, Apache, Nginx, MYSQL and MSSQL administration AWS solid skills in EC2, RDS, VPC, VPN, S3, Cloudfront, Workspace, SES, Route53, ECS, Elastic Beanstalk, etc Deep experience with AWS Devops tools like AWS Code Commit, AWS Code Deploy and AWS Code Pipeline Deep experience with open source Devops tools like Github, Docker, Jenkins, Gitlab and Kubernetes. Deep experience with infrastructure tools like Terraform Deep experience with Migration tools from on premise/cloud provider to another cloud provider. Good Experience With scripting languages like bash and python Good Knowledge of Networking (CCNA Course), Cyber Security Concepts, Cloud Computing and Virtualization. SSL Configuration Working with DevOps in the past 8 years, with focus on automation tools for cloud environments I've specialized myself in: ✅ CI/CD ✅ Docker ✅ Jenkins ✅ DevSecOps ✅ Amazon Web Services (AWS): EC2, ECS, S3, IAM, Lambda, Route 53, CloudFront, CloudFormation, RDS, etc; ✅ Automated Tests ✅ Architecture Solutions ✅ Terraform ✅ Kubernetes ✅ Ansible ✅ Apache, Tomcat and Nginx ✅ Git/SVN ✅ Linux (Ubuntu/RedHat/CentOS) ✅ Bash Script ✅ Powershell ✅ SQL/ NoSQL ✅ Programming Languages (Python, Java, PHP, NodeJS, Ruby) ✅ Expert Level ability with Server Administration in Linux & Windows environment, including designing a well architected framework for applications and infrastructure. ✅ Extensive Experience in Hybrid Migrations, replatforming or reArchitecting cloud solutions. ✅ Excellent in Devops integrating CICD to an Infrastructure build, deploy or operate with core IAAC skills(Terraform, Cloudformation, Ansible, cloud watch, Jenkins, etc.) 🌟 WHY ME ? 🌟 I stay Highly motivated, dedicated and results oriented ensuring client satisfaction & success delivered professionally. 🙋🏼‍♂️I am eager to work with you, to provide reliable, consistent, and High-Level solutions to design/development challenges. Please contact me, so we can discuss how we can work together to FULLY meet your Business Needs!

Apache Jakarta POI

Google Cloud Platform

Golang

API Integration

API

AWS CloudFormation

Python

PHP

JavaScript

Amazon ECS

Laravel

Azure DevOps

DevOps Engineering

DevOps

Amazon Web Services

4.9/5
(1 job)

Java Developer | Spring Boot | Spring Security | Hibernate | MySQL | MongoDB 🌟 Assalam o Alaikum! 🌟 I'm a Java Developer with over 2 years of hands-on experience in the tech industry. My journey spans from working with legacy applications like Northstar (a club management app) to developing modern applications with cutting-edge tech like NayaPay (a fintech solution). My experience covers both classic tech stacks and the latest Java frameworks, so I bring versatility and depth to every project. 👨‍💻 What Sets Me Apart? In addition to my corporate work, I've collaborated with various clients, delivering quality work with a focus on timely completion, effective communication, and strong project management skills. My attention to detail helps me thoroughly understand your requirements and turn them into results that truly deliver. 🔧 Troubleshooting & Debugging Crafting the perfect solution is only part of the process. I also prioritize bug fixing and post-deployment troubleshooting to ensure smooth operations. With significant experience in debugging and working alongside Application Support Teams, I’m committed to keeping your application running flawlessly. 🔄 Maintaining & Enhancing Existing Applications As an experienced developer, I always consider scalability and maintainability when working on any application. I thrive in both small and large team settings, collaborating with cross-functional teams to align with your business needs. 🚀 Building Your Solution from Scratch Starting an application from the ground up is a thrilling challenge! I’m ready to help lay a solid foundation for your application, combining my technical expertise with strong communication and project management skills to bring your vision to life. I’m here to discuss your business requirements whenever you’re ready. 💡 Your ideas, my expertise – a perfect match for success. Let’s get started today! 🌟

Apache Jakarta POI

OAuth

Spring Security

Spring Boot

Apache Struts 2

Apache Struts

J2EE

J2SE

Spring Data

Hibernate

Java Servlet API

Spring MVC

Java Persistence API

RESTful API

Spring Framework

Java

4.0/5
(164 jobs)

I am a graduate of Bachelor of computer science/bachelor of engineering(computer systems) from ECU (Edith Cowan University) in Perth,Western Australia.I have been studying about computers since 2012. I can work in any programming language easily and can build websites and web applications. Ask me for any problem in computer science and i will solve it. So basically anything regarding computer goes fine with me.I am studying about machine learning/artificial intelligence apart from just focusing on languages and algorithms. But my learning is not limited to just my bachelors as i am also an artist who makes sketches and paintings. My life goal is to become a researcher in computer science that's all i know for now about my future. My range of development services include creating web application , website , desktop applications , mobile applications , windows software , android software etc. I have worked with many clients. I'm working professionally with Visual Studio , Dream viewer , neat beans and android studio . I will work with you to discover what you need and create the best solution. My priorities are quality and respect of deadlines and budget. I love to share my enthusiasm and passion for development, so feel free to contact me and let's get the conversation started. Regards Syed Kazim Raza

Apache Jakarta POI

Flutter

Node.js

JavaScript

React

Swift

Django

.NET Framework

ASP.NET MVC

Python

Kotlin

C#

C++

Spring Boot

PHP

Java

5.0/5
(29 jobs)

🎯 Liferay DXP 7.4 Certified Professional Back-End Developer ⌛ 10 Years on Liferay Platform 🏆 100% Job Completion | Top Rated on Upwork | 7500+ Hours on Upwork I have 10 years of expertise in Software Development, Solution Architecture, and Product Design, with a strong focus on Liferay and Spring technology. 💼 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥 : 𝐂𝐨𝐫𝐞 : Java, J2EE, Liferay(6.X/7.X), Spring Boot, JSF, PrimeFaces,Icefaces, Richfaces, FHIR, ABDM, SNOMED-CT,REST, SOAP web services 𝐅𝐫𝐨𝐧𝐭-𝐄𝐧𝐝 : AngularJS, ReactJS, HTML4/5, XHTML, XML, CSS3, jQuery, JavaScript, AJAX 𝐒𝐞𝐫𝐯𝐞𝐫𝐬 : Tomcat, JBoss/Wildfly and Jetty, GlassFish 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 : Spring Security, OAuth2, JWT 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 : SQL, MySQL, PostgreSQL, MongoDB and Oracle 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 : Gmail, Google Meet, Google Calendar, Zoom, RazorPay, Stripe, SMTP, Twilio, DocuSign, Google Maps API, PayPal 𝐇𝐞𝐚𝐥𝐭𝐡𝐂𝐚𝐫𝐞 𝐒𝐭𝐚𝐧𝐝𝐚𝐫𝐝 : FHIR | EHR | EMR | SNOMED | HL7 | OpenEHR | OpenEMR | ABDM 𝐒𝐞𝐚𝐫𝐜𝐡-𝐄𝐧𝐠𝐢𝐧𝐞𝐬 : Apache Solr, Elastic Search 𝐂𝐥𝐨𝐮𝐝 𝐚𝐧𝐝 𝐃𝐞𝐯𝐨𝐩𝐬 : AWS, Google Cloud, Azure, Jenkins, CICD, Docker, Kubernetes 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 : JTest, JUnit, Mockito and Powermock 𝐂𝐨𝐝𝐞 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐓𝐨𝐨𝐥𝐬 : Crucible and Sonarqube 𝐁𝐮𝐢𝐥𝐝 𝐭𝐨𝐨𝐥𝐬 : Maven, Gradle, Ant, npm, grunt and webpack 𝐕𝐂𝐒 : SVN, GIT, GITLAB, Bitbucket 𝐎𝐒 : Linux, Windows and Mac OS 𝐁𝐮𝐠/𝐈𝐬𝐬𝐮𝐞 𝐭𝐫𝐚𝐜𝐤𝐞𝐫𝐬 : Jira, asana, Trello 🔐𝐋𝐢𝐟𝐞𝐫𝐚𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 : ➜ Expert in almost all OOTB features [ Sites, Pages, Webcontents, Fragments, Layouts, Asset Publishers, Categories, Tags, Search, Workflows, User Management, Roles, Permission, User Groups ] ➜ Implemented Custom Portlets [ using MVC, React, Spring, JSF, service builder and standards like OSGI, JSR 168 and 268 ] ➜ Implemented REST API using Liferay Rest builder ➜ Implemented themes [ using Freemarker, velocity ], ➜ Customized Liferay [ using Service wrapper, Portlet filter, Lifecycle events, Model listeners, Search contributors, JSP, Core Classes ] ➜ Implemented Web Fragment [ Freemarker, HTML, CSS, Javascript ] ➜ Implemented SSO Integration supports SAML, Keycloak, LDAP, OpenId, OAuth, and more ➜ Implemented SMS and WhatsApp Integration using Twilio ➜ Implemented Third-Party integration using REST API or client SDK ➜ I have recently upgraded Liferay 7.0 to Liferay 7.4 including data and code migration both. Looking forward to working with you to develop and deliver a fantastic product and Solutions as per your Business Requirements.

Apache Jakarta POI

Liferay

Web Development

HTML

CSS

Bootstrap

React

MySQL

Spring Boot

Spring Framework

PrimeFaces

Spring Security

Java

Hibernate

Jakarta Server Faces

5.0/5
(4 jobs)

💎Senior Full Stack Developer 💎8+ years of professional development experience 🏆30+ successfully implemented projects ✅projects from scratch ✅maintaining work with existing project and platform ⏰ Available for over 30 hours per week 🤝 Open to a long-term collaboration Hello! I’m experienced backend Laravel PHP developer with a wealth of experience working on diverse projects , including seamless integrations with Laravel Vue .js and React . I specialize in identifying challenges and designing comprehensive full stack solutions to meet specific project goals . Whether collaborating with a team or working independently , I focus on delivering high-quality , results-oriented digital products customized to your needs Front-End Development ✔ Vue.js | Vuex | Nuxt.js | Vuetify ✔ React.js | Redux | React Native | React TypeScript ✔ JavaScript | TypeScript ✔ HTML5 | CSS3 | SCSS | Bootstrap ✔ jQuery | AJAX ✔ Adaptive Web Design Back-End Development ✔ Laravel | Laravel Livewire | Full Stack Laravel ✔ PHP Laravel | Core PHP | Custom PHP | PHP Script ✔ Yii | Yii2 | CodeIgniter | Symfony 4 | Laminas ✔ Backend Nodejs | Express.js | Java Backend engineer ✔ PHP MySQL | PostgreSQL | MongoDB | Microsoft SQL Server | SQLite ✔ API Development | RESTful API | GraphQL CMS & E-commerce ✔ Familiar with: WordPress developer | WooCommerce | PHP WordPress ✔ Shopify | Full stack web developer | ERP Development | CRM Customization Cloud & DevOps ✔ AWS Integration | Amazon Web Services ✔ Docker | Continuous Integration ✔ Apache Server | Vtiger | Shopware Software & Tools ✔ MadCap Flare | Affinity Designer ✔ Database Architecture & Administration ✔ ETL | Transact-SQL | Oracle Database Roles & Specializations ✔ Full stack developer php | Back-End Developer | Front-End Developer ✔ PHP Laravel Developer | Vue Developer | React Developer | Flutter Laravel PHP Developer | PHP React ✔ Senior PHP Developer | Senior Backend developer Node.js ✔ Familiar with: Python Full stack developer | Full stack developer ai Industries I Worked With ✔ E-commerce ✔ Healthcare ✔ Real Estate ✔ AI & ChatGPT Integration ✔ Social Media ✔ Sales & Digital Marketing ✔ Education & Legal ☎️ I’d be happy to learn more about your project and ideas. Reach out today to schedule a quick meeting to discuss how I can assist you!

Apache Jakarta POI

Web Design

Full-Stack Development

HTML

Web Application

Web Development

JavaScript

SQL

Web Service

MongoDB

MySQL

RESTful API

Database

API

Laravel

PHP

5.0/5
(1 job)

✅ ♛ TOP-RATED PLUS! ✅ ✓ HIGH-QUALITY PRODUCT DELIVERY✅ ☯ LONG-TERM RELATIONSHIP 🇺🇦 Hey, I'm Ukrainian, I'm in a safe place and have the ability for non-stop work! ⚡️ 🌍 Our team is distributed over POLAND 🇵🇱, ITALY 🇮🇹, ROMANIA 🇷🇴, CANADA 🇨🇦, and UKRAINE 🇺🇦. I am a Full Stack Engineer at InterCode company with 10 years of experience in the industry! 👨‍💻👨‍👩‍👧‍👦 🔥Technical Skillset: 🖥 Programming Languages / Technologies: .NET 7 / JavaScript / TypeScript / HTML/ CSS, C# / ASP.NET Core / Web Services and APIs / Microservices / Kafka / XML / JSON / JWT 📊 RDBMS MS SQL / Postgres / Oracle / SSRS, PowerBI and Tableau Server / CDC and ETL 👨‍👩‍👧‍👦 Methodologies Agile, SCRUM, Kanban / TDD / Shift-Left / Feature Driven Development ☁️ Cloud Azure AD and Azure App Services / DAPR / K8S / Azure Pipelines, GitLab Pipelines / Terraform I have successfully led teams of up to 15 engineers in delivering high-quality software solutions. I strive to achieve results, take responsibility for my work, and communicate effectively with others. I'm always open to learning new things and receiving constructive criticism. Keywords🔑 Front-End Development Back-End Development Website Responsive Design ReactJS Next.js TypeScript HTML5 CSS3 SCSS SASS Bootstrap Material-UI Webpack Ant Design Angular JavaScript Tailwind CSS GraphQL Redux React Bootstrap Website Redesign Web Application Ecommerce Website Browser Extension Figma Performance Optimization UX/UI Design Mobile App Development MERN Stack MongoDB Express.js React.js Node.js Nest.js React IOS Android API Design SQL PostgreSQL Amazon Web Services DynamoDB S3 EC2 Expo App Center Firebase Distribution TestFlight RESTful APIs Cloud Platforms AWS Azure Websockets Charts 3D Visualization Third-Party APIs JavaScript Developer TypeScript Developer Angular Specialist NgRx Expert RxJS Developer React Developer Redux Developer Sass Expert MaterialUI Specialist Bootstrap Developer Mantine Developer Frontend Developer Backend Developer Full Stack Developer Web Development Specialist MERN Stack Developer NodeJS Developer Express.js Developer Test Engineer Stripe Integration Specialist Handlebars Developer Agenda Scheduler Developer MySQL Database Administrator PostgreSQL Database Specialist MongoDB Expert AWS Solutions Architect AWS Redshift Developer Agile Project Manager SCRUM Master Kanban Specialist Micro-Frontends Developer Feature Driven Development Specialist Behavior Driven Development Specialist MVP Development Expert Trunk Based Development Expert VSCode Expert WebStorm Expert Jenkins CI/CD Engineer CircleCI Specialist Heroku Deployment Expert DataGrip Database Specialist Studio3T MongoDB Specialist Git Expert GitHub Repository Manager Docker Containerization Expert API Developer Web App Developer Responsive Design Expert Cross-Platform Mobile Developer Third-Party APIs Integration Specialist Performance Optimization Expert Cloud Services Developer CI/CD

Apache Jakarta POI

Web Design

API

.NET Framework

ASP.NET Core

ASP.NET MVC

ASP.NET

C#

CSS

Angular

API Integration

Web Application

HTML

React

JavaScript

Web Development

5.0/5
(24 jobs)

Are you looking for a Professional Magento and Shopware Developer? With 13 years of experience in Magento technology and 7 years of experience in Shopware technology, I have successfully done more than 100 projects and helped businesses build high-performing online stores. As a Certified Magento Developer and Certified Shopware Developer, I specialize in delivering tailored solutions to meet your unique eCommerce needs. Progressive Web Apps (PWA), Shopware, Hyvä, and more—I’m the perfect fit to bring your eCommerce dreams into reality. 💪 👩 My goal is to understand your unique needs and develop custom solutions so that you get a product exactly tailored to what you envisioned. ☑️ Here’s a list of the services I provide: 🔸 Magento and Shopware Development & Customization 🔸 Progressive Web Apps (PWA) Development 🔸 Hyvä CMS Management & Customization 🔸 Performance and Speed Optimization 🔸 Theme migration from Luma, Porto to Hyvä 🔸 UI/UX Design & Implementation 🔸 Cross-Platform Compatibility Testing and Optimization 🔸 Payment Gateway Integration & Maintenance 🔸 Database Management & Security Setup 🔸 SEO Analysis, Enhancement, and Monitoring 📈 My experience includes: - Developing custom modules specifically designed for Magento 2 websites. - Integrating payment gateways such as PayPal and Stripe. - Building custom Shopware websites from the ground up. - Integrating external APIs and optimizing storefront performance. Moreover, my portfolio showcases a wide range of projects utilizing technologies such as HTML5, CSS3, JavaScript, MySQL, and more. 🟢 Contact me today to discuss how we can work together to create an eCommerce experience that exceeds your expectations! ------------------------------------------------------------------------------------------------------------------------ - Web Development - Magento - PHP - Magento 2 - Web Design - Ecommerce Website Development - Shopify - JavaScript - HTML - WordPress - WooCommerce - CSS - Ecommerce Website - MySQL - API Integration - API - Shopware - Graphic Design - HTML5 - App Development - Search Engine Optimization

Apache Jakarta POI

Graphic Design

Web Design

Ecommerce Website Development

Shopware

Magento 2

Magento

HTML5

MySQL

CSS

HTML

JavaScript

PHP

Web Development

API Integration

Ecommerce Website

5.0/5
(9 jobs)

I'm Syed Sohaib, a results-driven Growth Architect and Google Ads Specialist with over 15 years of experience in digital marketing. I help businesses achieve explosive growth by crafting data-driven strategies and executing high-performing Google Ads campaigns. My expertise encompasses SEO, ASO, web & mobile app development, and content creation, allowing me to deliver comprehensive digital solutions. What I Can Do For You: Google Ads Mastery: I create and manage targeted Google Ads campaigns that generate qualified leads and drive conversions. Data-Driven Optimization: I utilize data analytics to ensure your campaigns deliver maximum ROI and adjust strategies for continuous improvement. Comprehensive Digital Strategy: I combine best practices in SEO, ASO, web & mobile app development, and engaging content creation to boost your digital presence across all channels. Clear Communication: I prioritize clear communication throughout the project, keeping you informed and involved at every stage. Why Choose Me? Proven Track Record: Over 20 years of experience and a successful portfolio of completed projects demonstrate my effectiveness. Google Ads Certified: My in-depth knowledge of Google Ads platforms and best practices ensures your campaigns are optimized for success. Data-Driven Approach: I make decisions based on data analytics, not guesswork, to deliver measurable results. Ready to Launch Your Growth Trajectory? Let's chat about your unique business goals and create a customized digital strategy that propels your growth. Contact me today! Check out my work history, ratings and reviews for your assurance.

Apache Jakarta POI

Microsoft Ads

Apple Search Ads

Google Ads Account Setup

Google Ads Audit

Google Ads Account Management

Digital Marketing

Pay Per Click Advertising

NodeJS Framework

Laravel

iOS

PPC Campaign Setup & Management

Android App Development

AngularJS

Google Ads

5.0/5
(2 jobs)

👑𝕭𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝗘𝘅𝗽𝗲𝗿𝘁 🥇𝟴+ years of 𝑺𝑶𝑳𝑰𝑫 experience Are you looking for an expert 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 to bring your ideas to life? Look no further! 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: ◆ Custom Blockchain Development ◆ Smart Contract Development ◆ Blockchain Platform Selection ◆ DApp Development ◆ NFT Development ◆ Crypto Exchange Development ◆ Token Development (ERC, SPL, TRC, BEP, etc.) ◆ DeFi Solutions Development ◆ Web3 Solutions Development ◆ Enterprise Blockchain Solutions ◆ Crypto Bot Development ◆ STO/ICO/IDO/IEO/IGO/INO Development ◆ Industrial Blockchain Solutions ◆ MVP and PoC Development 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗦𝘁𝗮𝗰𝗸 & 𝘁𝗼𝗼𝗹𝘀: ◆ 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: Ethereum, Hyperledger, Solana, Binance Smart Chain, Stellar, Tron, Polygon, Algorand and more ◆ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗧𝗼𝗼𝗹𝘀: Next.js, Git, Figma, Jira, Trello, Scrum, Cloud flare, Azure, Visual Studio Code ◆ 𝗙𝗿𝗼𝗻𝘁-𝗲𝗻𝗱: React.js, Next, JavaScript (ES6), TypeScript, Angular, Vue.js ◆ 𝗕𝗮𝗰𝗸-𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Node.js, Express.js, Nest.js, PHP Laravel, Firebase. ◆ 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻: Bit-coin, Ethereum ,EOS, Hyperledger, Substrate, NFT, Solidity, erc20/DeFi, erc721/NFT. ◆ 𝗗𝗕: MySQL, Mongo DB 🌐 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: ◆ NFT Marketplace Development ◆ Smart Contract Audits & Deployment ◆ Decentralized Finance (DeFi) Solutions ◆ Crypto Exchange Development ◆ Wallet Integration & Web3 Functionalities I’ve successfully delivered tailored solutions for startups and enterprises alike. My approach combines cutting-edge technology with a deep understanding of client needs, ensuring a smooth development process from concept to deployment. Let’s build the future of blockchain together. I’m eager to hear more about your project. Feel free to contact me today! Best regards, 𝗦𝘆𝗲𝗱 𝗠𝘂𝘀𝘁𝗮𝗳𝗮 𝗛𝗮𝗶𝗱𝗲𝗿

Apache Jakarta POI

Solana

Uniswap

Blockchain

ERC-20

PHP Script

ERC-721

Web3

Ripple

Agile Software Development

GitHub

RESTful API

Database Architecture

MongoDB

MySQL

Node.js

5.0/5
(62 jobs)

I am a seasoned developer with over 15 years of expertise in Python, Language Models (LLMs), Generative AI, databases, and cloud development. My passion lies in harnessing emerging technologies, particularly in OpenAI software development, to create impactful and innovative solutions. As an enthusiastic advocate for OpenAI, I stay abreast of the latest advancements in artificial intelligence and machine learning. I specialize in utilizing cutting-edge models like OpenAI's GPT-4 and Meta's LLaMA LLM to build intelligent applications seamlessly tailored to project requirements. I bring extensive experience working across major public cloud platforms, including AWS, Azure, and Google Cloud. My LLM projects often leverage OpenAI APIs or Amazon Bedrock, utilizing pre-trained models or fine-tuning custom datasets with SageMaker’s GPU-optimized distributed accelerators on HyperPods. A strong communicator, I prioritize transparency and efficiency, ensuring projects are delivered on time and within budget. With a proven ability to transform complex concepts into profitable business applications, I consistently deliver high-quality, scalable solutions that align with organizational goals. My technical skillset encompasses Python, Snowflake, ChatGPT, a variety of databases (MS SQL, MySQL, Oracle, PostgreSQL), Redshift, Databricks, API design, Salesforce integration, Kafka/Redis messaging, data scraping, and automation. I also hold deep expertise in cloud infrastructure design, management, and optimization across AWS, Google Cloud, and Azure. As an AWS Certified Solutions Architect, I deliver robust, scalable, and secure software architectures. Additionally, I am proficient in a range of DevOps tools, including GitHub, Jenkins, Docker, Kubernetes, Terraform, and CI/CD pipelines. My database expertise extends to Snowflake, AWS Redshift, AWS Glue ETL, Google BigQuery, and SQLAlchemy, enabling me to drive data-centric projects with precision and scalability. My specialization includes Generative AI, RAG-based AI system (Retrieval Augmented Generation), Prompt Engineering, Large Language Models (LLMs), Danswer, Chatbots, and Q&A. My expertise in web scraping, utilizing tools like Selenium, Scrapy, Puppeteer, and API scraping, extends to platforms like LinkedIn, SalesNavigator, Twitter, Facebook, Instagram, and e-commerce sites including Amazon, Walmart, and Alibaba. I have successfully scraped complex websites, including but not limited to Amazon, Walmart, Target, Kroger, Home Depot, Zillow, Realtor, Redfin, TruePeopleSearch, Menards, Ace Hardware, Wayfair, Best Buy, and Lowe's. Experience in micro-service architecture, distributed systems integration, machine learning, data scraping pipeline, automation of complex manual tasks, and finance-related data analysis further strengthens my capabilities. AI and NLP: OpenAI, LLM Agents, LLM Summarization, LangChain DevOps Tools: GitHub, Jenkins, Docker, Kubernetes, Terraform, Slack Cloud Platforms: AWS (Certified Solution Architect Associate), Google Cloud, Azure Database Technologies: Snowflake, AWS Redshift, AWS Glue ETL, Google Bigdata, SqlAlchemy Automation: Scripting (Python, Shell), Terraform

Apache Jakarta POI

Selenium WebDriver

Kubernetes

Celery

Big Data

Amazon EC2

API

Google Cloud Platform

AWS Lambda

Amazon DynamoDB

Database Design

Microsoft Azure

AWS Glue

ChatGPT

Python

SQL

5.0/5
(11 jobs)

!!! Bring value to your business. It is my primary objective !!! I specialize in developing custom Front End & Back End solutions that meet the unique needs of businesses. My expertise allows me to create efficient, scalable, and secure solutions. Including developing custom modules and extensions, integrating third-party services, and optimizing performance to improve page load times and increase conversion rates. I help businesses bring their ideas to life by combining intuitive UI/UX design, solid front-end performance, and robust back-end architecture. Whether it’s crafting a responsive website, creating a sleek mobile app, or engineering a complex SaaS solution, I’ve got the skills and experience to deliver top-quality results. ✅ Why Work With Me? * Full-Stack Expertise: I bridge the gap between front-end and back-end seamlessly. You don’t need separate developers – I cover it all. * Client-Focused Approach: Your goals are my priority. I listen, collaborate, and ensure we achieve results that exceed your expectations. * High-Quality Code: Clean, well-documented, and scalable code that saves time and money on maintenance. * On-Time Delivery: Timely communication and transparent project management, ensuring we meet every deadline. * Problem Solver: I’m not just a coder; I’m a solution-oriented developer who identifies challenges and solves them creatively. 🌐 My Tech Stack - Front-End Development Languages: HTML5, CSS3, JavaScript (ES6+), TypeScript Libraries/Frameworks: React.js, Vue.js, Next.js, Angular UI/UX Tools: Tailwind CSS, Mantine, Material UI, Bootstrap, Chakra UI, Figma-to-code implementation - Mobile Development: React Native, Flutter for cross-platform apps Performance Optimization: Lighthouse reports, lazy loading, responsive design - Back-End Development Languages: Node.js, Python, PHP Frameworks: Express.js, NestJS, Django, Flask, Laravel - Databases: MongoDB, PostgreSQL, MySQL, Firebase, SQLite APIs: RESTful APIs, GraphQL, third-party API integration - DevOps: Docker, CI/CD pipelines, AWS (S3, EC2, RDS), Heroku, Netlify Authentication: OAuth, JWT, Passport.js, Firebase Auth - Full-Stack Tools Git/GitHub, Jira, Trello, VS Code, Postman, Swagger, Webpack Cloud Platforms: AWS, Google Cloud, Vercel 🌟 Key Services I Provide Custom Web Development: From simple landing pages to complex web applications. Mobile App Development: Building fast, responsive, and cross-platform mobile applications. Full-Stack Development: Complete end-to-end solutions tailored to your business. UI/UX Development: Creating stunning, user-friendly interfaces that convert visitors into customers. API Development & Integration: Building secure, scalable APIs and integrating third-party services seamlessly. Performance Optimization: Ensuring your website or app runs fast, smooth, and is SEO-friendly. Maintenance & Support: Ongoing improvements, bug fixes, and feature updates. 📅 Past Projects & Achievements Here are a few highlights of the types of projects I’ve successfully delivered: E-Commerce Platforms: Developed full-featured e-commerce stores with custom dashboards, payment gateway integrations (Stripe, PayPal), and advanced search/filter functionalities. SaaS Applications: Built scalable SaaS platforms handling thousands of users, featuring advanced authentication, billing systems, and performance monitoring. Cross-Platform Mobile Apps: Created apps for businesses, including booking systems, delivery apps, and social platforms, ensuring smooth functionality on iOS and Android. Content Management Systems: Developed custom CMS solutions for blogs, news sites, and portfolio platforms. Fintech Tools: Built secure and user-friendly fintech apps, including dashboards for budgeting, invoicing, and payment processing. Landing Pages: Crafted responsive, SEO-optimized, and high-conversion pages tailored for marketing campaigns. 👥 What My Clients Say ‘Working with Serhii was a fantastic experience. He delivered exactly what we needed, on time, and the final product exceeded expectations!’ ‘Reliable, knowledgeable, and great communication throughout the project. Highly recommended for full-stack development work.” 📊 Let’s Build Something Great Together If you’re looking for a reliable full-stack developer who understands both the technical and business side of a project, I’m here to help. I thrive on solving problems and delivering software solutions that drive growth for your business. ✨ Let’s discuss your project and take it to the next level! Feel free to reach out with any questions, ideas, or goals you have in mind. I’m ready to get started! 🌐 Available for Full-Time, Part-Time, or Project-Based Work Let’s connect and turn your ideas into reality. Click the "Hire Me" button to get started!

Apache Jakarta POI

DevOps Engineering

Front-End Development

Back-End Development

Mobile App Development

Full-Stack Development

Web Development

Microsoft Azure

Golang

SQL

DevOps

Flask

AWS CodePipeline

Django

Elasticsearch

Ecommerce Website Development

4.9/5
(132 jobs)

✅ Senior PHP Developer with 12 Years of Experience in Full-Stack Development ✅ Opencart, Magento, Sylius, Symfony, Laravel 🚀 Overview As a seasoned Full-Stack Developer with over 11 years of hands-on experience in PHP development, I have honed my skills across various frameworks and technologies. I specialize in delivering end-to-end solutions for both front-end and back-end development, with a strong focus on e-commerce platforms. My extensive technical expertise and passion for high-quality, scalable development make me an ideal partner for projects requiring advanced problem-solving and innovative solutions. 🌐 Core Competencies and Expertise 🌟 PHP Development 11+ years of experience in front-end and back-end development with PHP Strong understanding of Object-Oriented Programming (OOP) principles Expertise in PHP Unit and functional testing for high-quality code 🌟 Frameworks & Platforms 10+ years of experience in OpenCart development 8+ years in Laravel framework 7+ years in Symfony 5+ years with Magento Experience with Yii 2 and building custom PHP projects 🌟 Frontend Development 5 years of experience in Vue.js development Strong command of HTML5, CSS, JavaScript, and frameworks like Bootstrap Proficiency with jQuery, Vuex, Axios, AJAX, and fetch Experience in TypeScript, Angular, and React 🌟 Mobile Development 3 years of experience with Flutter (Dart) 🌟 Database Management In-depth knowledge of SQL and experience with MySQL Experience with Redis, Firebase, MongoDB, and Elasticsearch 🌟 Additional Technologies Proficiency in Spring Boot (Java) Expertise in REST API development and MVC architecture Skilled in Docker, Socket.io, and Git for collaborative development Hands-on experience with SOLID principles, RabbitMQ, and Linux environments Familiarity with PHPStan, Xdebug, Swagger/OpenAPI 🚀 Professional Approach I am dedicated to staying at the forefront of the latest trends and technologies. My deep knowledge of multiple frameworks allows me to quickly adapt to new environments and deliver top-notch, scalable solutions. Whether it's e-commerce development, custom PHP projects, or mobile applications, I provide comprehensive solutions tailored to each client's unique requirements. 📧 Let's Collaborate If you're seeking a reliable and experienced full-stack developer to take your project to the next level, I'm ready to help. Let's connect to discuss your needs and how I can contribute to your team or project. Specializations: E-commerce Development | Laravel Developer | OpenCart Developer | Symfony Expert | Magento Developer | Vue.js Developer | Full Stack Developer | PHP Developer | API Integration | Web Design | JavaScript Developer | Next.js Developer | Web Developer | Front-End Developer | PHP Developer | Back-End Developer | E-Commerce Expert

Apache Jakarta POI

Elearning LMS Consulting

Amazon Web Services

Software Architecture & Design

Payment Gateway Integration

Custom PHP

Web Application

RESTful API

PostgreSQL

MongoDB

Apache HTTP Server

Websockets

Ecommerce Website Development

Vue.js

Laravel

PHP

3.5/5
(56 jobs)

Hello! I am an accomplished Full Stack Developer with over 7 years of expertise in crafting cutting-edge web and mobile applications. My journey began as a back-end developer, and I have since mastered the art of developing robust web and mobile apps that deliver seamless user experiences. I have a strong command on following technologies and tools: ☑React Native, Flutter for mobile app excellence ☑Kotlin, Swift for dynamic mobile experiences ☑REST API & Redux ecosystem for efficient data flow ☑Firebase for scalable and real-time applications ☑Jest for rigorous testing ☑NODE JS, NEST JS for powerful backend development ☑Python, Django for versatile scripting ☑MySQL, MongoDB, Redis, Elasticsearch for robust data management ☑Docker, Vagrant for seamless deployment ☑Nginx, Haproxy for optimized performance ☑Various AWS services for scalable cloud solutions ☑Git, GitHub, Bitbucket for streamlined version control ☑Strong HTML & CSS skills for pixel-perfect designs ☑PHP, Laravel, Symfony ☑ WordPress, Shopify As a Python AI/ML developer specializing in data science and deep learning, I am dedicated to delivering high-quality solutions that leverage the power of artificial intelligence and machine learning for businesses. With a strong computer science background and hands-on experience in developing state-of-the-art AI models, my services encompass a wide range of tasks including data analysis, predictive modeling, natural language processing, and computer vision. I am passionate about providing intelligent solutions that generate actionable insights and drive improved business outcomes. Areas of expertise in Python AI/ML developer: 🚀 Image analysis, classification, and detection: I utilize vector databases and image analysis models to create hashes and perform image matching, enabling precise and efficient image analysis. 🚀 AI bots trained on custom language models: By leveraging GPT3 models and training them on specific datasets, I create AI bots capable of engaging in deeper and more tailored conversations. 🚀 ML - computer vision: I excel in tasks such as segmentation, classification, and object detection, leveraging advanced techniques and tools like PyTorch, Keras, ResNet50, OpenCV, and TensorFlow. Programming languages and tools I am proficient in: ✔️ Python ✔️ R ✔️ PyTorch ✔️ Keras ✔️ ResNet50 ✔️ OpenCV ✔️ TensorFlow ✔️ SQL ✔️ OpenAI I am committed to delivering innovative AI solutions that drive business growth and efficiency. Let's collaborate to unlock the full potential of artificial intelligence in your organization.

Apache Jakarta POI

PHP

API

Network Security

iOS Development

WHMCS Development

Android App Development

CSS

Data Mining

VPN

HTML5

Mac OS App Development

Firewall

Internet Protocol Security

OpenVPN

Machine Learning

Python

5.0/5
(43 jobs)

Back-end engineer with a lifelong passion for software, databases, and scalable distributed & secure solutions. Over the 𝟭𝟯+ 𝘆𝗲𝗮𝗿𝘀, I have developed or contributed to nearly 𝟱𝟬+ 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 in a variety of work like developing from stretch and scaled up to 1M+ user base, scaled from 1000 request/day to 𝟭𝗠+ 𝗿𝗲𝗾𝘂𝗲𝘀𝘁/𝗱𝗮𝘆, and other technical works. I have worked with clients in various domains like healthcare, fintech, ed-tech, real estate, government agencies, and the non-profit sector, and have 𝘄𝗼𝗿𝗸𝗲𝗱 𝗳𝗼𝗿 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 𝘀𝘂𝗰𝗵 𝗮𝘀 𝗨𝗽𝘄𝗼𝗿𝗸 (yes I worked for Upwork itself, a listed company on the NASDAQ exchange), 𝗟𝗲𝘁𝘀𝗵𝗲𝗚𝗼 (a listed company in Botswana Stock Exchange), 𝗢𝗖𝗢 𝗚𝗹𝗼𝗯𝗮𝗹, and many more startup companies in the world. Do you like Upwork's Reports & Time tracking feature? I am one of those developers who built that :) ✅ How can I help you ✓ I can handle your all end-to-end requirements analysis, UX, development, testing & delivery so you can focus on your sales & operations ✓ I can extend/develop your MPV product to production-ready ✓ I can develop products from scratch until the final delivery and support with maintained code quality and proper code coverage ✓ I can maintain your currently live products in the most optimum way by keeping quality and customer experience at first place in mind and with the minimum team and can save your cost ✓ I can choose the right technology stack and tools for your solution based on real needs and can save costs ✓ I can manage the team, do code reviews, handle CI/CD and releases, support live systems ✓ I can understand and implement the most difficult parts of software systems at very large-scale platforms like Upwork, (I am one of the Upwork platform devs) ✅ Expert areas - Java based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) & ZK (Zkoss) - ECMS implementation with Alfresco Content Services 4.x, 5.x, 6.x and Alfresco Process Services (Activiti) - RDBMS (MySQL, PostgreSQL, Oracle) - Graph/Document Databases MongoDB and DynamoDB - Web Crawlers with all features - Microservices based architecture implementation with Spring boot, Spring Integration and Apache Camel - AWS experience with RDS, SQS, SNS, SES, S3, and EC2 Instances - AWS API implementation experience - Queue based implementations with ActiveMQ/SQS - Test driven development implementation with unit and integration test cases with Junit/TestNG + Mockito + Spring - Database integration frameworks like JDBC/Hibernate/Sprint Data (ORM) and Spring Mongo - REST based Web Service/API implementation with Spring REST - CI/CD implementation with (Bamboo + Jenkins + Maven + Nexus + GIT(Bitbucket/Gitlab/Github)) - Payment Gateways implementations like Paypal and Stripe with debit/credit card integration - Solr/Lucene/ElasticSearch search engine integration - Jasper Reports (with DynamicJasper as well) - Agile Methodology understanding all terminology - Experience with implementing very complex queries with MySQL db - Java based Servers Tomcat/JBoss - Repositories like Git, SVN, P4V(Perforce) ✅ What my clients says (You may check in Work History) ⭐⭐⭐⭐⭐ "Vishal is best developer I have worked with till date. He is prompt responsive, an incredible problem solver, very professional, highly skilled and great team leader. He handles our portal continuous development including all project phases starting from requirement gathering(calls), task creation with all details, estimation, development, deployment on all environments, testing, creating wiki pages, choose right technology stack and AWS resources and manage tickets! He is handling dev team and also do development himself and supports everyone. Will certainly work with him again when we restart the project development! Highly recommended developer." 👤 Hugo Galicia ( CEO @ chicagodealvault.com ) ⭐⭐⭐⭐⭐ "It was a highly positive experience working with Vishal. He was conscientious, always doing his due diligence to clarify any uncertainties before starting work. He gives accurate estimates of effort/time required for work, and either delivers on time or early. Overall a very reliable and dependable worker. We hope to work together with him soon. Highly recommended!" 👤 Dominik Bieringer ( CEO @ Kandu ) ⭐⭐⭐⭐⭐ "Very experienced and diligent contractor" 👤 Abhijit Dhar ( VP - Technical Services @ Whitehat Virtual Technologies ) ⭐⭐⭐⭐⭐ "Vishal is an excellent java engineer, with great business logic, self-motivated, with deep technical knowledge. He jumped right in and understood the current project architecture with minimum KT and limited documentation. He is always eager to solve new issues. I highly recommend him and will definitely work with him again, if opportunity permits. A pleasure to work with" 👤 Chris Adams ( CEO @ eDataSource )

Apache Jakarta POI

Project Management

Project Planning

Web Application

SaaS

Integration Testing

J2EE

Spring Boot

Microservice

Hibernate

Spring Framework

PostgreSQL

JUnit

Amazon DynamoDB

Java

MySQL

5.0/5
(2 jobs)

As a Full-Stack Developer, I build Javascript-based web and mobile applications for startups, enterprises, and individuals. I can help if you are looking for a reliable developer or technical partner to make your business work. For the last 9 years, I have been providing the following services: ✅ Software development ✅ Web app development ✅ Mobile app development (React Native) ✅ API development and integration ✅ POC and MVP development Working worldwide, I can help with the following industries: 🔸 SaaS development 🔸 eCommerce or Retail 🔸 Fintech 🔸 Real Estate 🔸 E-sport My main tech skills: ☑️ NodeJS | NestJS | React | RactJS | Next.js | React Native ☑️ PHP | Laravel ☑️ ExpressJS ☑️ PostgreSQL / MySQL / MongoDB ☑️ Typescript ☑️ Docker ☑️ Cloud (AWS, GCP, DigitalOcean, Heroku) Let’s start your next project!

Apache Jakarta POI

React Native

Vuex

JavaScript

PHP

Amazon Web Services

SaaS

Web Development

API Integration

TypeScript

PostgreSQL

MongoDB

ExpressJS

Node.js

React

Laravel

4.9/5
(20 jobs)

👨‍💻 As a Senior Frontend Developer (React, Vue.JS) with over 7 years of experience, I specialize in creating high-performance, scalable web applications and software. I have a strong understanding of frontend development principles, which allows me to create clean, efficient, and optimized code. 🏆 𝐌𝐲 𝐩𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐚𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭s 𝐚𝐫𝐞: 🚀 Developing a scalable and performant single-page application using Vue.js and Vuex that improved user experience and increased customer satisfaction for an e-commerce platform. 🚀 Developing a highly optimized and performant single-page application that reduced page load time by 50% for a major e-commerce store (using React). 💻 Implementing a custom reusable component library for Vue.js and React applications, increasing code reusability and reducing development time for complex enterprise projects. 📈 Building a dynamic and responsive dashboard using Vue.js and D3.js, and using React and D3.js, that provided real-time insights and visualization of complex data for clients in the financial sector. 💡 Designing and implementing custom testing frameworks for Vue.js and React applications that improved test coverage and minimized regressions in large-scale projects with frequent releases. 🛠️ Building custom build pipelines and optimization processes using Webpack for both Vue.js and React applications that significantly reduced page load time and improved performance. 🧩 Developing modular and extensible frontend architectures using Vue.js and React with micro-frontends, enabling easy maintenance and seamless integration of new features for SaaS platforms. 💫 𝐖𝐡𝐚𝐭 𝐦𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐬𝐚𝐲 𝐚𝐛𝐨𝐮𝐭 𝐦𝐞: 🌟 "Working with Dmytro has been an absolute pleasure! They have a great attitude and are always willing to go above and beyond to make sure that our project is successful. Their attention to detail and ability to deliver high-quality work on time has made a huge impact on our business." 🌟 "I had the pleasure of working with Dmytro on a recent project and I was thoroughly impressed with their level of expertise and dedication to delivering a high-quality product." 💼 𝐇𝐨𝐰 𝐭𝐡𝐞 𝐡𝐢𝐫𝐢𝐧𝐠 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐥𝐨𝐨𝐤𝐬 𝐥𝐢𝐤𝐞: - Share your project documentation and current challenges with me. - I will review the documentation and provide initial insights on how to help. - Schedule a call for us to get to know each other better and for you to conduct an interview. - If we are a good fit for expertise and values, we will open a contract on Upwork. - Begin onboarding for the project and start working with your team. 🌟 Vue.js Skills: 🔹 Vue.js, Vuex, Vue Router, Vue CLI, VuePress 🔹 Nuxt.js 🔹 Composition API 🔹 Vue Testing Library 🔹 Vuetify, BootstrapVue, Element Plus, Quasar, PrimeVue, Tailwind CSS 🔥 React Skills: 🔸 React, Redux, React Router 🔸 Next.js 🔸 Gatsby 🔸 Styled Components 🔸 Material UI, Ant Design, Semantic UI, Tailwind CSS 👉 Software Engineering Skills: 📚 PHP, NodeJS knowladge 📚 Git 📚 Ability to write clean, maintainable, and scalable code that follows best practices 📚 Understanding of software development methodologies such as Agile, Scrum, or Kanban 📚 Experience with databases and data modeling 📚 Strong problem-solving skills and the ability to troubleshoot and debug complex software systems 📚 Effective communication and collaboration skills to work in a team environment 📚 Strong understanding of data structures, algorithms, and software design patterns such as GoF collection patterns 📚 Understanding of algorithmic complexity, Big O notation, and time/space complexity analysis. 🆙 If you are interested in discussing your project with me, make sure to click the 👉🟢INVITE 🟢 button, and let’s talk 🤝 Highlighted Skills: HTML5, CSS3, Sass/Scss, Responsive Web Design, Cross-Browser Compatibility, Web Accessibility, SEO Optimization, Frontend Architecture, JavaScript, jQuery, TypeScript, Angular, React, Vue.js, Ember.js, Web Components, Progressive Web Apps (PWA), Single Page Applications (SPA), Server Side Rendering (SSR), Client Side Rendering (CSR), API Integration, GraphQL, RESTful APIs, Web Performance Optimization, Browser DevTools, Git, GitHub, Webpack, Gulp, npm/yarn, Visual Studio Code, Sublime Text, Atom, Responsive Images, Lazy Loading Images, Code Splitting, Error Handling, Debugging, Agile Methodologies (Scrum, Kanban), Continuous Integration and Deployment (CI/CD), CSS Frameworks (Bootstrap, Foundation, Materialize), CSS Preprocessors (Sass, Less, Stylus), CSS-in-JS (Styled Components, Emotion), Frontend Libraries (jQuery, Lodash, Moment), Frontend Frameworks (React, Vue.js, Angular) Last updated: May 1, 2025

Apache Jakarta POI

AWS Development

SaaS Development

Back-End Development

Websockets

Nuxt.js

Next.js

Python

Web Development

Full-Stack Development

Redux

Front-End Development

React

Vue.js

HTML5

JavaScript

4.7/5
(54 jobs)

The Best at developing everything related to browsers & OS. 🌐 Chromium/Brave based Browser Development, ⚙️Operating Systems Development (Linux/ChromiumOS/AOSP based) 🖥️Electron & Tauri & CEF & C++ & QT & Flutter & C# & Python & Java Software Development, 📱 React Native Mobile Apps Development,🕸️ Web Scraping, 🛠️ Browser Extension Development Hello! I’m Naeem, a Senior Desktop & Mobile Apps Developer specializing in Chromium & Brave Browser, CEF, Electron software development. With over 11 years of software development experience, I’ve completed more than 400 projects, ranging from CEF, Electron, Browser Extensions development to full-fledged desktop & mobile browsers based on Chromium/Brave. As a Top Rated Upwork Freelancer, I pride myself on my expertise in creating custom solutions tailored to your business needs. Whether you need a new browser, automated web scraping tools, or cross-platform applications, I’m here to bring your vision to life. Let’s dive into my core skills: 🌐 Browser Customization: Expertise in Chromium and Brave for developing customized browsers or adding unique functionalities. Made 17+ Chromium/Brave based Browsers and have 5 years experience in this field. ⚙️Operating Systems Development: developing Linux/Chromium OS/AOSP based full fledge OS. 🖥️ Desktop Development: Leveraging Chromium Embedded Framework (CEF) and Electron for building cross-platform desktop applications that run smoothly on any OS. 📱 Mobile Apps Development: Utilizing React Native to create seamless mobile experiences across iOS and Android platforms. 🕸️ Web Scraping: Advanced techniques for extracting data efficiently and accurately from websites, catering to your data analysis needs. 🛠️ Browser Extension Development: From idea conceptualization to development and deployment, crafting browser extensions that enhance user experience and functionality. You can say I’m one of the world’s best developers, because I can think of a 1000 solutions for a problem, as an appreciation of my abilities my teachers named me “Best Programmer in the World” and Upwork & others added me in similar lists. I choose the best of possible solutions I thought of after consulting with you and then get you’re project done fastest with quality and all the features exactly like you imagined while you also control all aspects of development. Previous Projects outcomes: 1: AccuPin hired another ”expert developer” who took 2 months of their precious time and couldn’t deliver work and I did the same work in 4 days, exactly meeting their deadlines. 2: Recently it was the same situation with another Privacy focused Brave based Browser Development client, he hired a developer and he charged him 15,000 USD and wasn’t able to deliver anything in 3 months, then he assigned the same project to me and I was able to make delivery in just 3 weeks only with all the features. 3: It was the same story with the Chromium based browser client, Kahf, only difference was Other developer had charged him 30,000 USD and couldn’t deliver anything in 6 months and he didn’t even refund but I did the same work in just a week only with all the features. I have you many more stories like that any demos of what they sent them vs what i sent them, if you want to hear/see on a Zoom call, let me know. I’m able to think outside the box and make anything possible in shortest amount of time. Do give me a chance, and I will provide you with highest Quality of work you have ever seen, fastest and cheapest as well. I’m waiting for your go-ahead, just send me a message or invite 😍

Apache Jakarta POI

Mobile App Development

Full-Stack Development

Front-End Development

Flutter

Mobile Operating System

Computer Operating System

Chrome OS

Operating Systems Development

Android

Google Chrome Extension

Python

C++

C#

Chromium

React Native

4.0/5
(11 jobs)

As a seasoned Java Professional, I'm passionate about transforming business needs into technical solutions that are both scalable and efficient. With extensive experience in Java, Spring, Spring Boot, Hibernate, JPA, and Microservices, I specialize in creating reliable backend systems that drive productivity and performance. What I Bring to Your Project: End-to-End Development Expertise: From requirements gathering to final delivery, I ensure your project’s backend is developed with clean, maintainable, and scalable code using proven frameworks like Spring, Hibernate, and Spring Boot. Microservices & Integration: I design and implement microservice architectures using patterns such as API Gateway, Service Discovery, and Circuit Breaker to ensure seamless communication between services and resilience in your system. With Kafka and Apache Camel, I build integration solutions for real-time data processing and message-driven architectures, making your system flexible, scalable, and fault-tolerant. Database Management: With a deep understanding of SQL, JDBC, and databases like MySQL, Oracle, and MongoDB, I ensure your data is managed efficiently with optimal query performance. Design Patterns for Efficiency: I utilize widely accepted design patterns to ensure your application is modular, maintainable, and scalable. These patterns help in solving common development challenges and improving the overall architecture, making it easier to adapt and extend your system as your business grows. What Sets Me Apart: Proven Problem-Solver: I excel at identifying the root of a problem and delivering solutions that don’t just patch issues but improve long-term performance and scalability. Collaborative Approach: I work closely with clients to ensure their vision is translated into a technical solution that aligns with their business goals. Monitoring & Optimization: Beyond development, I monitor applications, networks, and infrastructure to ensure everything runs smoothly and efficiently.

Apache Jakarta POI

RESTful API

Elasticsearch

MySQL

MongoDB

Database

Apache Tomcat

Apache Maven

Apache Kafka

Microservice

Java Persistence API

Spring Boot

Hibernate

Spring Framework

J2EE

Java

Want to browse more freelancers?

Sign up

Hire the best Apache Jakarta POI developers

Check out Apache Jakarta POI developers with the skills you need for your next job.

Want to browse more freelancers?

How it works

1. Post a job

2. Talent comes to you

3. Collaborate easily

4. Payment simplified

How do I hire a Apache Jakarta POI Developer on Upwork?

How much does it cost to hire a Apache Jakarta POI Developer?

Why hire a Apache Jakarta POI Developer on Upwork?

Can I hire a Apache Jakarta POI Developer within 24 hours on Upwork?