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Hire the best Apache Kafka Developers in Ukraine

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  • $50 hourly
    • 5.0/5
    • (2 jobs)
    Dear clients, at this time I have above to 10 years in web development, and a lot of experience in full stack technologies and workflows. Top skill in Javascript/Nodejs include native and frameworks(ExtJS, React), php native and frameworks(yii2, zend), mysql, mssql, mongodb, oracle, rabbitmq, imap, xls, reqex, rest api. Unix, SSH, git and svn skill also in basket. Moreover I have developed government product and still on support position here. Also i have own startup in game dev based on Unreal Engine 4/5 with C++ experience and various CG specialist in team with already gorgeous results. Thank you, have a nice day!
    Featured Skill Apache Kafka
    MySQL Programming
    Ext JS
    Amazon Cognito
    NestJS
    Unreal Engine
    Next.js
    Node.js
    ExpressJS
    React
    JavaScript
    Unix
    RabbitMQ
    TypeScript
    MySQL
    Docker
    MongoDB
  • $45 hourly
    • 5.0/5
    • (6 jobs)
    👉 𝗖𝗹𝗶𝗰𝗸 𝗜𝗻𝘃𝗶𝘁𝗲 𝗯𝘂𝘁𝘁𝗼𝗻 𝗼𝗻 𝗺𝘆 𝗽𝗮𝗴𝗲 𝗮𝗻𝗱 𝗹𝗲𝘁'𝘀 𝘁𝗮𝗹𝗸! I'm a Senior Java developer with a solid computer science background and strong analytical, communication, and soft skills. With 14+ years of experience in the financial sector from Fortune 500 list, including working for the largest Swiss investment bank and an Swiss investment fund (as well as for other business domains like Auctions, Consulting etc.), I specialize in delivering high-quality web and enterprise applications tailored to your business needs. 💼 𝗪𝗛𝗬 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘? – 14+ Years in Finance / Financial / Fintech Development: Extensive expertise in building secure and robust systems for the financial industry. – Full-Stack Proficiency: Skilled in Java, JavaScript, and TypeScript for seamless backend and frontend integration. – Cloud Expertise: Proficient with AWS ( ECS, SQS, SNS, Batch, Lambda, Bedrock, RDS, EC2, CloudWatch, S3 etc.) for scalable cloud solutions. – Comprehensive Technical Leadership: I also manage an Upwork agency, offering access to additional developers to scale your projects as needed. 🚀 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗗𝗢 𝗙𝗢𝗥 𝗬𝗢𝗨: – Custom Software Development: Build scalable, secure, and high-performing web or enterprise applications using Java, Spring, and AWS. – Design & Optimize System Architecture: Design robust and growth-ready systems with cutting-edge technologies. – Front-End Excellence: Create intuitive, user-friendly interfaces using Angular / AngularJS, Vue / Vue JS / Vue.JS, React / React JS / React.JS, Knockout.js. – Cloud Solutions: Implement cloud strategies with AWS services, ensuring cost-efficiency and scalability. – Database Management: Expert in both SQL ( PostgreSQL, MariaDB / MySQL ) and NoSQL ( Apache Cassandra, DynamoDB ) for data-intensive applications. 💪 𝗦𝗞𝗜𝗟𝗟𝗦: Programming Languages: Java 8 / 11 / 17, JavaScript, C/C++, PHP, Bash Frameworks & Libraries: Multithreading, Spring ( SpringBoot, Spring Boot, Spring MVC, SpringMVC, Spring Data, Spring Security ), JPA / Hibernate / Kundera, Akka, JMS ( IBM MQ ), REST, SOAP, Swagger, OpenAPI, REST API, JAX-RS, JAX-WS, AspectJ AOP, Vaadin 7 / 14+ / Flow, JUnit, EasyMock, Solr, Apache POI, JDBC, JSP / JSF, Play Framework, JavaMail, JavaCC, Ehcache Cloud & Infrastructure: AWS: ECS, SQS, SNS, Batch, Lambda, Bedrock, RDS, EC2, CloudWatch, S3, Docker, Hazelcast, Apache ZooKeeper Databases: RDBMS: MS SQL Server, PostgreSQL, MySQL / MariaDB, NoSQL: Apache Cassandra Version Control: Git, SVN, Mercurial Front-End Development: Angular / AngularJS, Ionic, Knockout.js, Vue.js, jQuery, HTML5, CSS, Twitter Bootstrap, Highcharts, Node.js / npm, SockJS / STOMP Build & Automation Tools: Maven, Gradle, Ant Operating Systems: Linux, Windows Cybersecurity: Web-security analysis, symmetric/asymmetric ciphers, PKI Business Domains: Fintech, Banking, Finance, Investment Funds, Payments, Consulting, CRM systems for HR, Car Auctions, Video Streaming 👉 𝗙𝗲𝘄 𝘄𝗼𝗿𝗱𝘀 𝗮𝗯𝗼𝘂𝘁 𝗺𝗲 Fond of developing applications and services using Java Springboot, acting Java backend developer but also as Java Full stack developer. Also I started Upwork agency here and act as PM, feel free to hire more developers if needed! 🎯 𝗟𝗲𝘁'𝘀 𝘀𝗵𝗮𝗽𝗲 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗶𝗻𝘁𝗼 𝗮 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁. Contact me to get started! 📨
    Featured Skill Apache Kafka
    REST API
    JavaScript
    MySQL
    MariaDB
    PostgreSQL
    Vaadin
    SOAP
    Amazon Web Services
    Akka
    Apache Cassandra
    Hibernate
    Spring Security
    Spring Boot
    Java
  • $95 hourly
    • 5.0/5
    • (24 jobs)
    => Let's Connect Hello, I'm Dima, a seasoned CyberSecurity Specialist and Turnkey Infrastructure Expert specializing in BigData solutions and data analysis, utilizing a DevOps approach. => Expertise Overview With a robust passion for constructing SOC, SOAR, and SIEM solutions, my primary focus lies in developing data ingestion, enrichment, and analysis pipelines, ensuring they are highly available and fault-tolerant. My expertise extends to building central logging and real-time processing platforms from the ground up, optimizing them for performance, security, and reliability across multiple environments, whether in the cloud or on-premise. => Value Proposition My commitment is to deliver solutions that not only centralize security and threat intelligence but also facilitate enhanced control over data, ultimately contributing to infrastructure cost savings. => Technological Summary CyberSecurity:------- > Wazuh, Suricata, pfSense BigData:--------------- > Kafka, ElasticSearch, OpenSearch Data Processing:----- > FluentD, Vector.dev, Apache NiFi Infra as Code:--------- > Terraform, cdktf, cdk8s Virtualization:--------- > Proxmox, VMware Containerization:----- > Kubernetes Clouds:---------------- > AWS, Hetzner, DigitalOcean, Linode Automation:----------- > Jenkins, GitHub Actions Monitoring:----------- > Zabbix, Grafana, Kibana, Prometheus, Thanos Mail:--------------------> MailCow SMTP/IMAP, Postfix VPN:------------------- > OpenVPN Server Programming:-------- > Bash, Python, TypeScript Operating Systems:- > CentOS, RHEL, Rocky Linux, Ubuntu, Debian => Personal Attributes • Leadership: Leading by example with a team-first approach • End-to-End Execution: Proficient from POC to Enterprise-level implementation • Resilience: Demonstrating high thoroughness and endurance • Adaptability: A quick, can-do architect and experienced troubleshooter • Optimization: Adept in process and performance optimization • Documentation: Skilled technical documentation writer • Vision: A visionary in technological implementation and solution provision
    Featured Skill Apache Kafka
    Elasticsearch
    Linux System Administration
    Apache Hadoop
    Email Security
    Machine Learning
    ELK Stack
    Cloudera
    Zabbix
    MySQL
    Big Data
    Apache NiFi
    PfSense
    Red Hat Administration
    Proxmox VE
    Amazon Web Services
  • $35 hourly
    • 5.0/5
    • (25 jobs)
    I have 8 years experience of backend development. During this time I worked in many IT companies and projects. I develop enterprise applications on Java. My technology stack includes: Java; Multithreading; SpringBoot; Spring Security, JWT, OAuth 2, Keycloak; Spring Data JPA, Hibernate; Docker, Kubernetes; Microservice architecture; REST API development; AWS infrastructure; Unit tests; Maven; Jenkins; Git, Bitbucket; Apache Kafka; MySQL, PostgreSQL, MongoDB, Redis. I usually work using Jira, Confluence, Slack, IntelliJ IDEA. I prefer to work in team, so Agile and Scrum are my best friends. Also I can create websites and landing pages using different CMS. And I'm an expert in WordPress. I know PHP, MySQL, JavaScript, jQuery, HTML5, CSS3, Smarty, and I have other skills. I am an adherent of the purity code. I am a prudent and meticulous person. You can watch my sources on Bitbucket: bitbucket.org/gribozi
    Featured Skill Apache Kafka
    RESTful API
    OAuth
    Spring Boot
    HTML
    JUnit
    Apache Maven
    WordPress
    CSS
    Core Java
    Kubernetes
    Docker
    Git
    Java
    PostgreSQL
  • $40 hourly
    • 5.0/5
    • (8 jobs)
    Senior Java Developer with 18 years of experience in Web Development using Java, Kotlin & JavaScript | TypeScript stack. Deep knowledge of Spring Framework, Spring Boot Web MVC, Spring Boot WebFlux, PostgreSQL, Node.js, Nest.js, Next.js & React. Master in Computer Science. For the last 18 years, I have been providing the following 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: ✅ Full-stack Software Development ✅ Web development ✅ Mobile application development ✅ Database modeling ✅ Implementing high-load microservices ✅ API development and integration ✅ Improve application performance ✅ POC and MVP development ✅ Cloud Engineering Working worldwide, I helped 5 customers from Fortune 500 with software development, coding, testing, infrastructure setup, forming and supervising a development team. I specialize in the following business 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬: 🏦 Fintech -💲Digital Banking -💲 Regulatory Compliance -💲Investment Management -💲 Securities Trading -💲 Securities Landing -💲 Payment Systems 🔆 Renewable Energy 💊 Healthcare 🏠 Real Estate 📚 Education 🚚 Logistics 🎯 Marketing 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸: 🗄️ Backend: Java, Kotlin (Spring Framework, Spring Web MVC, Spring Boot WebFlux), TypeScript (Node.js, Nest.js), Golang ⚛ Web: TypeScript, JavaScript, HTML5, CSS, Next.js, React, Angular 📳 Mobile: ReactNative, Flutter, Ionic 🔋 Database: Supabase, PostgreSQL, Redis, MongoDB, Cassandra, AWS DynamoDB, Azure CosmosDB ☁︎ Cloud: AWS, AWS Lambda, AWS API Gateway, Azure, GCP 🛠️ DevOps: Docker, Kubernetes, Nomad, Terraform, Ansible, Github, Gitlab. I have wide experience with different Software Architecture Styles starting from Monolith to high-load Microservices and different infrastructure approaches such as On-Premise, Cloud, and Hybrid. I've implemented 200+ Microservices for the World's Top Companies.
    Featured Skill Apache Kafka
    Kubernetes
    Docker
    Redis
    Supabase
    React
    Next.js
    TypeScript
    AWS Lambda
    Spring Boot
    Golang
    Kotlin
    SQL
    JavaScript
    Java
  • $25 hourly
    • 3.6/5
    • (1 job)
    Hi, I`m an experienced Software Developer, the best option for your ideas. There is no fear of emerging problems, I find the best solutions for them. I ensure: • Swift and responsive communication • Dedicate to the utmost client convenience. • High-quality work with punctual deadlines Main skills: ▸ Java ▸ Spring(MVC, Security, Boot, Data, Rest) ▸ Hibernate ▸ Docker ▸ Kafka ▸ Kubernetes ▸ CI/CD ▸ Selenium ▸ Git ▸ SQL ▸ MQTT ▸ Protobuf ▸ Internet of Things In my work, I have encountered different kinds of developments: Web programs; Programming tools; Server software for IOT gadgets; I don't stop at what I have achieved, because there is no limit to perfection!
    Featured Skill Apache Kafka
    CI/CD
    Internet of Things
    Selenium WebDriver
    Kubernetes
    Docker
    PostgreSQL
    JDBC
    Spring MVC
    Hibernate
    Thymeleaf
    Spring Boot
    Git
    Java
    Spring Framework
  • $50 hourly
    • 5.0/5
    • (7 jobs)
    Docker, Helm, Kong Api Gateway, Redis, Postgres, Jenkins, AWS EC2, EFS, RDS, Elastic Cache, VPC, Route 53, S3, Prometheus, Grafana, Alertmanager, docker-compose, helm, git, ELK, Kubernetes, Locust, Jmeter, istio, HA-proxy, MongoDB, Load-testing, CI/CD, GCP.
    Featured Skill Apache Kafka
    Cloud Security
    Cloud Computing
    PostgreSQL
    MongoDB
    ELK Stack
    Prometheus
    Grafana
    GitLab
    GitHub
    Jenkins
    Amazon
    Google Cloud Platform
    Kubernetes
    DevOps
  • $40 hourly
    • 5.0/5
    • (4 jobs)
    I specialize in web application development, bringing extensive experience in Java (> 8 years) and Angular/React (> 3 years). What I provide: - API development with microservices; - Software architecture. Design of applications from scratch; - Implementation of high-load services providing high observability; - Solutions to address challenges related to scalability, maintainability, and security; - Performance optimization, fix slow segments, refactoring and data migrations; - Apply Agile practices to effectively organize work; and more. Expertise in (not only): • Fintech (payment integrations, trading) • eCommerce • KYC • Healthcare • Administration systems • BigData TECHNICAL SKILLS - Programming languages: Java, JS, Typescript, JQuery; - APIs: REST, MVC, Graphql, WebSocket, etc; - Databases: PostgreSQL, MySQL, Oracle, Netezza; MongoDB; - Microservices: Spring Boot, Spring WebFlux, Docker, Hibernate, Spring Security, Kafka, RabbitMQ; - Version Control Systems: Git; - Testing: JUnit, Mockito, Cucumber, Test containers, Selenium; JProfiler, JMeter; - Cloud: AWS (S3, SQS, EC2, Lambda, Cognito, CloudFormation, ECR, EKS, AWS Console), GCP (Pub/Sub, Storage, GKE); - Software architecture. - Other: Maven, Gradel, Jenkins, Docker, K8s; Apache Spark, HDFS;
    Featured Skill Apache Kafka
    Cucumber
    Kubernetes
    Docker
    Angular
    Git
    GraphQL
    RESTful API
    Software Architecture
    Amazon Web Services
    Hibernate
    SQL
    Microservice
    Spring Boot
    Java
  • $35 hourly
    • 5.0/5
    • (11 jobs)
    I am a motivated back-end developer with 4 years of commercial experience. In my work, I always follow OOP principles and the best actual techniques, write clean and readable code, make documentation, perform refactoring, cover code with unit tests, and conduct code reviews. I like to work both in a team and individually. For Back-End development, I used Python, and have experience with all main Python Frameworks - Django, FastAPI, and Flask. My most outstanding qualities are perseverance, being goal-oriented, good communication, the ability to work in a team, and the desire to constantly improve my skills and abilities. If this sounds like a fit for you, I’d love to chat – invite me to interview and grab some time.
    Featured Skill Apache Kafka
    MongoDB
    Docker
    Web Development
    Web Scraping
    Data Analysis
    PostgreSQL
    Amazon Web Services
    Websockets
    Django
    Bootstrap
    Flask
    FastAPI
    Back-End Development
    Python
  • $45 hourly
    • 5.0/5
    • (3 jobs)
    I am a Java lead developer with over 10 years of commercial background in full circle development. Seasoned in project design and implementation from the ground up using cutting-edge technologies and software solutions. Over the years I've been involved in architecture design, planning, and team management while working on medium, big and large-size projects. I’m always wide open to new opportunities and challenges in work and eager to help customers to meet their business needs.
    Featured Skill Apache Kafka
    PostgreSQL
    Spring Data
    Hibernate
    AWS Application
    Bootstrap
    Spring Boot
    Oracle
    MySQL
    Angular
    TypeScript
    MongoDB
    Java
    React
    JavaScript
  • $35 hourly
    • 5.0/5
    • (13 jobs)
    Are you looking for a DevOps or SysAdmin? You’re on the right way!👇🏼 My name is Sofiia and I'm a DevOps and SysAdmin at one of the top dev firms in Ukraine in Kyiv as named by Clutch in 2020 🏆 About me: - 3 years of experience as system administrator - Programming languages: Java, JavaScript - Technologies & frameworks: Spring, Hibernate, Kafka, OOP, jQuery - Configuration/Automation tools: Kubernetes, Kiali, Istio, Calico, Consul, Terraform, Helm, Ansible - CI/CD: GitHub actions, Jenkins, Spinnaker - Cloud: AWS, Azure - Testing: jUnit, Postman - Databases: PostgreSQL, SQLite, MySQL, JDBC, FireBase - Deployment & VCS: Git, GitHub, Docker - Segments: Magento Commerce, WordPress Marketing websites, WordPress Woocommerce, ERP/CRM systems, corporate security access domain Skynix is a team of professionals focused on LAMP and JAM stacks. We deliver complex web and mobile applications development using PHP (Laravel, Yii2, Zend, or CMS systems like Magento or WordPress) and JavaScript (React, Vue, TypeScript, Ember). Why Skynix: - Providing development services starting from 2015 - 20+ team members (Senior 25%, Middle 45%, Junior 30%) and keep on growing - Only professional and enterprise-level of attitude - the project will be delivered, you can just enjoy the process - Great at remote work with various time zones - Our developers are good in English and learn skills extremely fast Need to empower your business? Let's work together
    Featured Skill Apache Kafka
    CI/CD
    Docker
    Hibernate
    Azure DevOps
    AWS CloudFormation
    Kubernetes
    Azure DevOps Server
    AWS CodeDeploy
    Terraform
    DevOps
    GitHub
    AWS CodePipeline
    Java
    System Administration
  • $36 hourly
    • 4.7/5
    • (12 jobs)
    As a Full Stack Engineer, I specialize in developing scalable, secure, and high-performance front-end applications and back-end systems. I have extensive experience with server-side programming languages such as Javascript/Typescript, and Python for development of RESTful APIs using frameworks such as Express, Flask, and Django, as well as with databases such as MySQL, MongoDB, and Redis. In addition to my API development expertise, I am skilled in DevOps practices and technologies, including containerization with Docker, infrastructure as code with Terraform, and continuous integration and deployment with Jenkins and GitLab CI/CD. My technical expertise is complemented by strong problem-solving, communication, and collaboration skills. I am adept at identifying and resolving complex technical issues, and have a proven track record of delivering high-quality software solutions on time and on budget. I am a team player who thrives in collaborative environments, and I am committed to continuous learning and professional development to stay abreast of the latest trends and technologies in the field. My skills: - Strong programming skills in JavaScript/Typescript, Python and Ruby - Experience in designing and developing RESTful APIs using Express, Django and Flask - Proficiency in database design and management, with experience in SQL and NoSQL databases - Knowledge of DevOps practices, with experience in continuous integration and continuous deployment using tools such as AWS, Jenkins, and Docker - Familiarity with containerization and microservices architecture - Experience in performance tuning and optimization of backend systems My experience: - Developed and maintained RESTful APIs for a variety of web applications - Designed and implemented database schemas and performed database optimization - Built and maintained continuous integration and deployment pipelines using tools such as Jenkins and Docker - Designed and implemented containerized microservices architecture for scalable and fault-tolerant systems - Performed performance tuning and optimization of backend systems for improved response times and reduced latency
    Featured Skill Apache Kafka
    Swagger
    Spring MVC
    React
    Angular
    RESTful API
    Spring Boot
    DevOps
    Microservice
    MySQL
    Kubernetes
    Java
    Google Cloud Platform
    Amazon Web Services
    Docker
  • $39 hourly
    • 5.0/5
    • (2 jobs)
    Programming is my hobby and profession. 17+ years software development experience, 21+ experience in IT. Architecture and design development. New technologies research. Code and design document review. Team/Tech lead experience. *Primary skills*: Java, Big Data
    Featured Skill Apache Kafka
    Cucumber
    SOAP
    Apache Flink
    PostgreSQL
    MySQL
    Spring Framework
    API
    JUnit
    Microservice
    Back-End Development
    RESTful API
    RESTful Architecture
    Spring Boot
    Java
  • $35 hourly
    • 5.0/5
    • (11 jobs)
    Are you looking for a motivated and professional developer? You’re on the right page.👌 Hi, my name is Andrey, I'm a skilled and dedicated Back-end developer with 5 years of experience in full-cycle software development from concept to support and maintenance. My core competencies include working with: 📌 Python 📌 AWS, GCP, Heroku 📌 FastAPI, Django/DRF, Flask 📌 JavaScript 📌 React.js I have experience with several popular frameworks, which allows me to choose the best tool for creating a high-quality user interface according to your needs. Moreover, I am good at working in a team and appreciate the exchange of knowledge, but I am also able to independently solve problems and look for new solutions to improve the quality of work. 💪 More about my skills that will help us achieve the best result: ✅ FastAPI, Django/DRF, Flask, Celery, Bootstrap, SQLAlchemy, Numpy/Pandas ✅ SQLite, MySQL, Microsoft SQL, PostgreSQL, Alembic; ✅ NoSQL - MongoDB, Redis, Elasticsearch; ✅ HTML, CSS, LESS, Sass; ✅ AWS, GCP, Heroku ✅ Git, GitHub, GitLab, BitBucket ✅ Agile, Scrum, Kanban, Waterfall, Pair Programming, Feature Driven; 🔹I am always striving for excellence and am ready to work on projects of any complexity. 🔹I am a fast learner and willing to learn new technologies and frameworks to stay up to date with the latest trends in the industry. 🔹I also appreciate quality communication, so I am ready to offer you timely communication and solutions that will be useful in the long run. 🔹I am sure my experience and skills can be useful for your company and I will gladly participate in your project. Why choose us: 🔸 “Meduzzen” has a proven track record of delivering exceptional development services since 2018. 🔸Our team comprises 40+ highly skilled professionals, with 40% of them being Senior level, 50% Middle level, and 10% Junior level. We are committed to expanding our team further. 🔸We take a flexible approach to work, adapting seamlessly to any project requirements to ensure timely and high-quality deliverables. Our clients can rest assured that they can rely on our team to deliver the desired results. 🔸We excel at remote work and are well-versed in collaborating with clients across different time zones, ensuring effective communication and seamless project management. 🔸Our developers are not only fluent in English, but they also have a remarkable ability to learn new skills quickly, enabling them to stay up-to-date with the latest technologies and best practices in the industry.
    Featured Skill Apache Kafka
    React
    Google Cloud Platform
    NoSQL Database
    JavaScript
    MongoDB
    Redis
    PostgreSQL
    SQL
    Flask
    Kubernetes
    Docker
    Amazon Web Services
    Django
    Python
  • $35 hourly
    • 5.0/5
    • (1 job)
    As a backend developer, I specialize in creating and managing the server-side of web applications. My expertise lies in using programming languages like Java, Python, Ruby, and PHP to build the core functionality of applications. I focus on database management, security implementation, and optimizing performance to ensure that the applications run smoothly. Collaborating closely with frontend developers, I integrate the server-side and client-side components to create a seamless user experience. I stay up-to-date with the latest technologies and trends in backend development to deliver innovative and scalable solutions. I am eager to bring my advanced skills and knowledge to your team and contribute to the success of your projects. Bohdan
    Featured Skill Apache Kafka
    Auth0
    Vue.js
    React
    Supabase
    Continuous Deployment
    Continuous Integration
    Serverless Computing
    Node.js
    Kubernetes
    Docker
    Back-End Development
    Amazon Web Services
    Python Script
    Python
  • $60 hourly
    • 5.0/5
    • (1 job)
    With over a decade of experience in software development, with a primary focus on Go, PHP, and Java, I have demonstrated proficiency in crafting robust and highly observable applications. My expertise extends to designing solutions that adhere to testing standards and industry best practices. I possess extensive knowledge in designing modern distributed systems within cloud environments, adeptly navigating challenges such as eventual consistency and transaction management in microservices architectures.
    Featured Skill Apache Kafka
    PostgreSQL
    Kubernetes
    Query Optimization
    Google Cloud Platform
    AWS Application
    RabbitMQ
    Redis
    MySQL
    MongoDB
    Golang
    Software Architecture & Design
    Software
  • $50 hourly
    • 5.0/5
    • (23 jobs)
    👋 Hey, I’m a Full-Stack Developer with over 10 years of hands-on experience delivering custom software solutions, AI-driven platforms, and scalable SaaS products for businesses, governments, and world-renowned universities. 💡 I help startups bring their MVPs to life with speed and precision, while also supporting established companies in evolving those MVPs into fully-fledged, production-grade applications. 🚀 One of my flagship projects: Prozorro.Sale - a national eProcurement platform aimed at increasing transparency and reducing corruption in public asset sales. 📊 Key results: 💰 $890M+ in revenue generated 👥 15,000+ active participants 📦 245,000+ lots created 🔒 High-level security compliance 🌍 Significant social impact across the country 🏆 Awards & Recognition: 🥇 Open Government Partnership Award (2021) — Seoul 🏅 UN Public Service Award (2022) — for promoting transparency and good governance CORE EXPERTISE: 🔹 Python Development & Backend Engineering - Deep experience with Python 3, Django, FastAPI, Flask, Celery, Django REST Framework - Async support with Uvicorn, Socket.IO, and background jobs using Redis - ORM and DB management with PostgreSQL, SQLAlchemy, Alembic - RESTful and GraphQL API architecture, including OAuth, API gateways, and secure endpoints - Optimize existing Python codebases, refactor for performance, and implement support for larger files and big data processing 🤖 Machine Learning & AI - Design and deployment of ML models for production use - Specialization in LLM (Large Language Model) integrations and AI-driven solutions - Handling large datasets: data cleansing, matching, transformation, and pipeline orchestration - Visualization and insights using Pandas, Matplotlib, and Plotly 📈 Data Engineering & Automation - Data scraping, data mining, web scraping, and data extraction from complex websites - Tools: Selenium, BeautifulSoup, Scrapy, Playwright - Experience with Amazon S3, MongoDB, Redis, and custom Python scripts for automation - Creation of intelligent web scrapers that bypass CAPTCHA, IP bans, and support anti-detect mechanisms 🌐 Full-Stack & Web Development - Frontend: JavaScript, ReactJS, VueJS, TypeScript, AngularJS, Backbone - Backend: Django, FastAPI, Node.js, with support for Nginx, Docker, and AWS - Development of secure ERP and CRM systems, e-health platforms, and EDS integrations HIGHLIGHTS: 🏛️ Worked with governments on educational and transparency platforms (e-health, digital identity, open data) 🎓 Delivered custom LMS and AI-powered platforms for renowned international universities 🛠️ Built secure, scalable platforms for EdTech, legal tech, e-commerce, and healthcare ⚙️ Strong background in building both lean MVPs and complex SaaS products 💡 WHETHER YOU'RE LOOKING TO: - Launch a Python-powered MVP - Deploy scalable AI or LLM applications - Build a custom CRM/ERP system - Implement automated scraping pipelines - Migrate or optimize existing infrastructure in Docker/AWS - I'M HERE TO HELP. 🔐 NDA-friendly | 🔌 API integrations | 🏗️ Production-ready | 📈 Results-driven Let’s turn your vision into a high-performance solution that scales! 📩 Reach out - I’d love to hear more about your project!
    Featured Skill Apache Kafka
    Data Engineering
    AI Development
    PyTorch
    Full-Stack Development
    Amazon Web Services
    Node.js
    FastAPI
    React
    Django
    Web Service
    DevOps
    Flask
    Machine Learning
    Python
  • $50 hourly
    • 5.0/5
    • (43 jobs)
    Senior software engineer with 6+ years of experience in software development. Started as an employee in small software companies, I finally decided to switch to freelance. I am working as an independent freelancer/consultant starting from 2015. Expertise: Backend development, High Load systems, Infrastructure tooling, ETL systems. Languages: Java, Scala, Javascript.
    Featured Skill Apache Kafka
    Apache Spark
    AWS Lambda
    Blockchain
    PostgreSQL Programming
    Spring Framework
    Amazon Web Services
    Microservice
    MongoDB
    Java
  • $45 hourly
    • 5.0/5
    • (1 job)
    I’m not here to just write lines of Java code — I’m here to build systems that work, scale, and actually make life easier for you and your users. Over the past 5 years, I’ve worked on everything from backend APIs and microservices to full-featured web apps. My main toolkit? Java, Spring Boot, and the AWS cloud — plus a mix of tools that make code cleaner, faster, and easier to maintain. When I build something, I think architecture first. When I design APIs, I make them intuitive. When I deploy — it just works. 🛠️ What I Can Help You With: • 5+ years of experience in Java & Spring — I speak fluent backend. • Skilled in PostgreSQL, Flyway, Elasticsearch — I love clean data. • Frontend-friendly: Angular 2+, HTML/CSS, Webflow — yes, I care how it looks too. • Cloud-native: AWS (Lambda, EC2, S3, Route 53, Elastic Beanstalk). • Tools that keep me sharp: Docker, Maven, Git, Postman, OpenAPI, Serverless. I’m the kind of dev who’ll read your brief like a product owner, write code like a perfectionist, and think like a user. No fluff — just clean, scalable software that’s ready to grow with your business. Let’s build something that actually matters.
    Featured Skill Apache Kafka
    AWS Application
    Angular 6
    Apache Hadoop
    Enterprise Software
    Blockchain Development
    DeFi
    DApp Development
    App Development
    Data Science
    Amazon EC2
    ETL Pipeline
    Apache NiFi
    Apache Flink
    AWS Lambda
    Spring Boot
    Python
    Java
    Apache Spark
  • $55 hourly
    • 5.0/5
    • (1 job)
    Java developer with 10+ years of experience. Client-oriented, motivated, team player. Analytical and problem solving abilities. Experienced with design and developing REST API for WEB and Mobile platform, Microservices architecture, database design, analysing performance issues, integration with third party API. Skills: - Java - Spring(Core, Security, Data, MVC, JDBC, Batch) - Spring Boot - OAuth - JPA, Hibernate, JDBC, SQL, PostgreSQL, Oracle - REST - Servlets API - OOP/OOD, DDD - RabbitMQ, Apache Kafka - MongoDB, Redis - Apache Solr - Liquibase, Flyway - JSON, Jackson - Maven, Gradle, Git, Graylog, Grafana, IntelliJ Idea, Jira - Jenkins, Docker, Microsoft Azure, Gitlab CI - JUnit, Mockito Master degree in Computer science and Information systems.
    Featured Skill Apache Kafka
    SQL
    Hibernate
    Spring Data
    Spring Boot
    Java Persistence API
    RabbitMQ
    Domain-Driven Design
    Spring Security
    Java
    JUnit
    Spring MVC
    Spring Batch
    Spring Framework
    Redis
  • $50 hourly
    • 5.0/5
    • (7 jobs)
    Greetings, I am a software engineer/architect from Lviv, Ukraine, with 15 years of experience. Google Cloud Professional Architect certified. Strong knowledge of SDLC and project execution stages: requirements gathering, feature planning, estimation, design and implementation, product maintenance, DevOps, and CI operations. Proven track record working with diverse clients ranging from small startups to Fortune 500 companies ✅Excellent knowledge of Java/Spring & Spring Boot/Hibernate/MySQL/Docker ✅Certifications: Google Cloud Architect Professional, Spring Certified Professional (by Pivotal)., Azure Fundamentals(AZ-900) by Microsoft ✅Strong knowledge of GCP/AWS/Azure platforms and cloud-related technologies. ✅TDD practitioner Feel free to ping me in order to discover how can I help solve your IT issues
    Featured Skill Apache Kafka
    BigQuery
    OAuth
    SQL
    Hibernate
    RESTful API
    Spring Boot
    Spring Framework
    Microservice
    Docker
    API
    MySQL
    Software Architecture & Design
    Java
    Amazon Web Services
  • $45 hourly
    • 4.9/5
    • (22 jobs)
    I am a software (mostly Java) developer with more than 10 years of experience. I have started from developing fully-featured enterprise systems on Java and ended up building complex data processing frameworks that solve all kind of big-data world tasks. I am ready to create architecture for reliable and amazingly fast ETL process with further ad-hoc analytics and data visualization. Was working mainly in banking and telecommunication area. I am a fan of new architecture approaches like CQRS. Has good communication skills, high level of motivation, open-minded. Programming​ ​ languages: Java,​ ​​​JavaScript, Python Big​ ​ data​ ​ tools: Kafka, Hadoop,​ ​ Zookeeper,​ ​ Spark,​ ​ Storm, HDFS, OOzie Full-featured​ ​ web​ ​ frameworks: Spring​ ​ Boot Databases: PostgreSQL,​ ​ MySQL Data warehouses: Vertica
    Featured Skill Apache Kafka
    Data Science
    Amazon Web Services
    Amazon EC2
    AWS Lambda
    Spring Boot
    App Development
    DeFi
    ETL Pipeline
    Apache NiFi
    DApp Development
    Blockchain Development
    Apache Flink
    Java
    Python
  • $50 hourly
    • 5.0/5
    • (17 jobs)
    Experienced, effective, proactive Software Engineer 👨‍💻 More than eight years of enterprise experience in developing modern distributed software systems ⚙️ My expertise mainly focuses on the latest Java Backend stack: Spring, Kafka, Postgres, Kubernetes, and Docker. Besides, I've delivered many various projects - my skill box is pretty packed. I'm mindful of details, OCD with clean code principles. My code is refactored and sharp, my tests are green and comprehensive. My goal is not to get the job done but to get the job done right. I am new here, so I'll go the extra mile to exceed clients' expectations. GitHub: github.com/shumyk Medium: medium.com/@sh.umyk
    Featured Skill Apache Kafka
    Microservice
    JavaScript
    JUnit
    Integration Testing
    PostgreSQL
    RabbitMQ
    NoSQL Database
    SQL
    Java
    Spring Framework
    Docker
    Bash Programming
    Golang
    Kubernetes
  • $35 hourly
    • 4.1/5
    • (7 jobs)
    Hi, I'm a Senior Java Developer from Ukraine. I'm a developer with over six years of experience writing a backend for enterprise projects in Java/Kotlin. Throughout my career, I have had the opportunity to participate in the design and implementation of backend solutions, particularly in the FinTech field. What I can give with collaboration with me: ✅ You'll receive a good understanding of your requirements and main needs from my side. ✅ We will be like a real team to make a better solution together that meets exactly what you want. ✅ I always focus on expected results and can give you some suggestions on achieving them best. ✅ I value your and my time, so I used to give estimates before starting any tasks. Languages: Java, Kotlin, Groovy Spring: SpringBoot, WebFlux, SpringSecurity, SpringData, Quarkus, Micronaut Frameworks: Hibernate, MapStruct, Jackson, Keycloack, FlowableBPMN, EuSign, Drools Decision Table; Assembly: Maven, Gradle; API: Rest, GraphQL; Message brokers: Kafka, Rabbit, GCP Pub/Sub; DB: Redis, Postgres, MongoDB, MySql; Documentation: Swagger, Mermaid, SpringDoc; Infrastructure: GoogleCloudPlatform, AWS, Kubernetes, Docker; Test: Junit5, Mockk, Spoke, WireMock, TestContainers.
    Featured Skill Apache Kafka
    AWS Development
    Angular 6
    REST API
    MongoDB
    PostgreSQL
    Hibernate
    Google Cloud Platform
    RabbitMQ
    Docker
    Kubernetes
    Redis
    Kotlin
    Java
    Spring Framework
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    Senior Full Stack Developer | React & Node.js Expert | 7+ Years of Experience Hi, I'm Mykyta, a passionate Full Stack Developer with over 7 years of experience building scalable, high-performance web applications. Specializing in React, Node.js, TypeScript, and microservice architectures, I deliver robust solutions for e-commerce, fintech, AI-driven platforms, and more. Based in Lisbon, Portugal, I bring a global perspective and a commitment to excellence to every project. What I Offer - End-to-End Development: From designing intuitive React frontends to building efficient Node.js backends with Express, NestJS, or GraphQL. - Scalable Architectures: Expertise in microservices, CQRS, and event-driven systems using tools like Kafka, RabbitMQ, and Redis. - Cloud & DevOps: Proficient in AWS, Google Cloud, Kubernetes, and CI/CD pipelines to ensure seamless deployment and scalability. - Third-Party Integrations: Extensive experience with platforms like Shopify, Jetti, and Flow.ai for e-commerce and AI-driven bot solutions. - Team Collaboration: A proven team player with a track record of mentoring developers and communicating directly with stakeholders to align technical solutions with business goals. My Experience - Senior Backend Developer at Brainrocket (Cyprus, 2024–2025): Enhanced CRM systems with agile microservice architectures, improved event broadcasting, and boosted test coverage for a cutting-edge IT company. - Full Stack Developer at NADUVI (Netherlands, 2022–2024): Owned critical e-commerce infrastructure, optimized order processing, and integrated third-party services like Shopify for a leading Benelux outlet. - Full Stack Developer at Quantifi (Canada, 2022): Implemented CQRS and GraphQL for a fintech car lending platform, improving scalability and API efficiency. - Full Stack Developer at Flow.ai (Netherlands, 2019–2022): Built AI-driven bot interaction platforms using Node.js, MongoDB, and Kafka, mentoring teams and engaging with business clients. - Front-end Developer at Swiss Ltd (Ukraine, 2018–2019): Developed blockchain-based marketplaces with React and EOS, mastering smart contract integration. Technical Toolbox - Frontend: React, Next.js, TypeScript, Redux - Backend: Node.js, Express, NestJS, GraphQL, PHP, Golang - Databases: MongoDB, MySQL, PostgreSQL, Redis, Apache Druid - DevOps: AWS, Google Cloud, Kubernetes, Terraform, CI/CD - Messaging: Kafka, RabbitMQ, Redis Pub/Sub - Other: Prisma, Microservices, CQRS, Blockchain (EOS) Why Work With Me? - Fast Learner: I quickly adapt to new tools and technologies to meet project needs. Meticulous & Goal-Oriented: I focus on delivering clean, maintainable code with a keen eye for detail. - Global Communicator: Fluent in English (C1), Ukrainian, and Russian, I bridge cultural and technical gaps effortlessly. - Client-Centric: I prioritize clear communication and aligning deliverables with your vision. Whether you need a dynamic e-commerce platform, a fintech solution, or an AI-powered application, I’m ready to bring your ideas to life. Let’s collaborate to build something extraordinary! Availability: Open to both short-term and long-term projects.Contact: Message me to discuss your project or schedule a call!
    Featured Skill Apache Kafka
    REST API
    GraphQL
    MySQL
    PostgreSQL
    RabbitMQ
    NestJS
    Redux
    Node.js
    React
    Redux Form
    MongoDB
    JavaScript
    React Native
    Redis
  • $50 hourly
    • 0.0/5
    • (1 job)
    I am a software engineer with over nine years experience in software development and over eight years’ working with Java. I worked in various domains such as telecom, fintech, IoT, media. It was as short-term assignments as long-term enterprise projects. I have a deep knowledge in enterprise software along with a clear understanding of such application layers like presentation, web, businesses and data which includes communication processes. I participated in all phases of the enterprise system development including estimate, design and architecture, implementation, debugging, deployment, integration, testing, re-factoring and maintenance with producing concise technical documentation and providing technical leadership. I am demonstrating constant growth of competency, reaching new and new attitudes in the IT industry.
    Featured Skill Apache Kafka
    Docker
    Spring Boot
    Jenkins
    Google Cloud Platform
    RESTful API
    Kubernetes
    Spring Framework
    Amazon Web Services
    Java
    OSGi
    Database Design
    Terraform
    Microservice
    Hibernate
  • $25 hourly
    • 5.0/5
    • (12 jobs)
    10+ years as Software Engineer - 7 years experience with programming in Python in commercial project. Using: Multithreads, Multiprocessing, Websockets, API, Kafka, Spark, SQL, Git, Slack, Docker, Flask, Github, Ray, PyZMQ, BS4, Asyncio - 3 years experience with AWS S3 EC2 ECS ECK Lambda Athena - 2 years experience using Flask and Django and Django Rest Framework - 5 years experience in Visual Basic, ASP - Experience in creating commercial web parsers of websites with any level difficulty - Experience in bypass antibot protection - Knowledge of SQL, JavaScript, IIS, SQL Server, Java, C#, TypeScript - Experience with Git - Work environment: Linux, Windows, MacOS Personal SKILLS - Fast and accurate having advanced programming abilities and interface design skills. - Hard-worker, creative, detail-oriented, sociable person. - Highly analytical, well-organised and ability to work effectively under pressure in order to meet deadline constraints. - Ability to solve technical problems independently Fluent English.
    Featured Skill Apache Kafka
    AWS Development
    TensorFlow
    Web Scraping
    Amazon Athena
    Amazon EC2
    Amazon S3
    Websockets
    Apache Spark
    Flask
    AWS Lambda
    API
    SQL
    Django
    Python
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