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  4. (Current) ZK Specialists
  • $50 hourly

    • 5.0/5
    • (69 jobs)
    I am a founder of FlexSolution company with a demonstrated history of working in the software development industry. Certified Alfresco Engineer! Skilled in Liferay, Kafka, Java, Javascript, CAS, LDAP, Maven, Hibernate, Spring Framework, Vaadin, GIT and so on. Graduated from the Kharkiv National University of Radioelectronics.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Business Process Model & Notation
    Vaadin
    Hibernate
    Node.js
    NestJS
    React
    Spring Framework
    SQL
    D3.js
    ExpressJS
    Redux
    React Native
    Java
    JavaScript
  • $60 hourly

    • 5.0/5
    • (17 jobs)
    More than 10 years of professional experience in software development. Certified AWS Solution Architect, Certified JAVA Professional(OCA & OCP) Certified Expert(OCE) in EJB. Professional experience in JAVA/J2EE, JPA, Spring Framework, ZK, JSP/Servlet, Mysql, Oracle, Rest API, Weblogic, JBOSS, Tomcat, Jasper Report etc. 6 years of working experience in Financial And Banking Domain.
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    CSS
    API
    JUnit
    Spring Boot
    Hibernate
    ZK Framework
    JasperReports
    EJB
    Java Persistence API
    Spring Framework
    Java
  • $35 hourly

    • 5.0/5
    • (6 jobs)
    Researching, designing, implementing and managing software programs. Testing and evaluating new programs. Identifying areas for modification in existing programs and subsequently developing these modifications. Writing and implementing efficient code.
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    Spring Cloud
    Web Design
    Spring Boot
    Java Servlet API
    Spring Framework
    Vaadin
    Spring MVC
    Jakarta Server Pages
    Java
    CSS
    CSS 3
    HTML5
    HTML
    Spring Data
    Spring Security
  • $35 hourly

    • 4.8/5
    • (3 jobs)
    IT Specialist with over 15 years of experience in a variety of organizations . Committed to continuous learning to ensure my skills are up to date, flexible and organized, with ability to work effectively. Excellent contributor as part of a team and proven ability to work on own initiative.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Flutter
    Spring Boot
    Linux System Administration
    Jakarta EE
    Vaadin
    PrimeFaces
    Bash
    PostgreSQL Programming
    TypeScript
    Angular
    Ansible
    Android
    Database Architecture
    Java
    PostgreSQL
  • $20 hourly

    • 4.6/5
    • (45 jobs)
    I have 15 years of experience in Java/J2EE technologies and I have been involved in analysis, design and coding. Key Skills: Core Java, Multithreading, Strong knowledge of OOPS concepts J2ee Technologies: Spring Boot, Spring Security, JWT, Struts, jQuery, BootStrap, Hibernate, jJPA, EJB, Servlet, JSP,JMS, ActiveMq,JDBC, XML (DOM & SAX Parser) JNDI, XML, AJAX, DHTML, JavaScript, CSS, Web Services AXIS AND JAX-WS, Rest API's, Quartz Scheduler Framework, JPA, Geo API . Database: Oracle, Mysql, DB2, MongoDB Other Tools: Eclipse, JUnit , AGILE, UML, Design Patterns, J2EE Design Patterns Servers Apache HTTP Server 2.0, Web Sphere Application Server 6.0 ,JBoss 5.0, Tomcat 8, GIT, SVN, Maven .
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    J2EE
    Core Java
    Elasticsearch
    Database Architecture
    RESTful API
    Spring Boot
    AJAX
    Hibernate
    Apache Struts
    JavaScript
    HTML
    MongoDB
    MySQL
    JDBC
    Spring Framework
  • $30 hourly

    • 4.9/5
    • (11 jobs)
    I am Software Developer and member of FlexSolution company for the last 5 years. Mostly, I convert PSD designs into HTML/CSS, can implement pixel-perfect layouts, w3c valid code and adaptive layouts for different sizes of screens, devices, browsers and OS. As well I work a lot with Javascript and all popular frameworks such as React/Redux, Angular, etc.
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    React Native
    Android
    WebRTC
    Alfresco Content Services
    iOS
    PSD to HTML
    React
    Node.js
    Vaadin
    Apache FreeMarker
    CSS
    HTML
    Bootstrap
    SaaS
    webpack
  • $70 hourly

    • 4.8/5
    • (13 jobs)
    With over 20 years experience in full life-cycle software development which includes analysis/design, coding, testing, implementation, support, and maintenance, I am able to work with you to implement your idea or solve your problem. I'm eager and able to learn new domains, methods, paradigms, and technologies. You'll find me to be a team player with a can do and will do attitude. My latest review speaks for itself, "Paul did an outstanding job ... Superb work, timely, honest, knowledgeable, went above and beyond. Paul is meticulous in his approach. His work included helping specify the requirements, designing the solution, building and testing the software, fixing bugs and helping us deploy the solution. He was primarily focused in the areas of security (Spring), user management, UI development, persistence (hibernate), and exporting our data model to MS Excel. Paul was very fair in the accounting of his time. He was on time with all of his work. I'll likely engage him again without a doubt if/when needed." If you are looking to build a web site and phone apps, you should consider building a Progressive Web Application (PWA) web site which will allow you to develop a single code base that can be "installed" on a smart phone to look like a native app. Skills: * Information Architecture (IA) * Domain Driven Design (DDD) * Object Oriented Design (OOD) * Object-Relational Mapping (ORM) * Object Oriented Programming (OOP) * SaaS development * Test Driven Design (TDD) * Unified Modeling Language (UML) * Unit Testing * User Experience (UX) * User Interface (UI) APIs: * Google Calendar * Google Maps * OpenAI Frameworks: * Vaadin 7, 8, 10, 13, 14, 23 * Spring Boot * Spring Security * JPA * Hibernate - ORM tool * Flowable - BPM tool * Quartz Scheduler * Rulebook * JUnit * mockito * vavr.io - functional programming for Java * Blaze-Persistence * OpenAI-Java Tools: * Intellij IDE * GitHub * Bitbucket * Jira * Confluence * PlantUML - UML diagramming tool * DBeaver - Universal Database Manager
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    Spring Framework
    Java
    CSS
    HTML5
    Java Persistence API
    Object-Relational Mapping
    Object-Oriented Programming
    SQL Programming
    Google APIs
    Payment Gateway
    API Integration
    Vaadin
    Spring Boot
    Web Development
  • $23 hourly

    • 5.0/5
    • (38 jobs)
    💪 7000+ HOURS WORKED | 💰 $200K+ Earned | ✔️ 5★ Review | 👷 30+ Jobs ✔️ Worked with Top 500 companies ✔️My Professionalism = Your Competitive Advantage! ✔️Upwork Top Rated Plus Developer ✔️100% Job Success ✅I specialize extensively in Java: ✓ Back-End Frameworks: Spring Boot, Spring, Hibernate, JPA, JSP, Servlets, Java ✓ Front-End Frameworks: Angular, ReactJS, JQuery, and JavaScript ✓ Other Frameworks: Apache Storm, Hadoop, JPPF, ElasticSearch, Hazelcast, Spring Cloud ✓ Cloud Computing: AWS, Google Cloud, Digital Ocean, and Heroku ✓ Security: OAuth2, OpenID Connect, JWT, LDAP, X.509, Kerberos, Social Logins, SSO ✓ Databases: MS SQL, MySQL, Oracle, PostgreSQL, MongoDB, HBase ✓ CI/CD and monitoring: CI/CD using Gitlab, CI using Jenkins and Bamboo, Kubernetes ✓ Agile Methodology: Scrum and Kanban using project management tools like Jira, Pivotal Tracker, Gitlab, etc. ✅My core competence lies in providing End-to-End Solutions to Enterprise Application Development for the Financial, Healtcare, and Telecom domains. ✅ How can I help you ✓ I can handle your all end-to-end requirements analysis, development & delivery so you can focus on your sales & operations ✓ I can extend/develop your MVP 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 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 ✅ Expert Areas ✓ Java-based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) ✓ Microservice & Cloud native architecture for developing SaaS-based system ✓ RDBMS (MySQL, PostgreSQL, Oracle) ✓ Docker, Kubernetes, OpenId, SSO, SAML, ✓ Graph/Document Databases MongoDB and DynamoDB ✓ Microservices-based architecture implementation with Spring boot, Spring Integration, and Apache Camel ✓ AWS experience with Serverless, RDS, SQS, SNS, SES, S3, VPC, Cloudformation, ECS, Lambda, Cognito and EC2 ✓ AWS API implementation experience ✓ Queue-based implementations with RabbitMQ, ActiveMQ, SQS, and SNS ✓ 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 Stripe with Debit/Credit Card Integration ✓ Solr/Lucene/ElasticSearch search engine integration ✓ Agile Methodology ✓ Experience with implementing very complex queries with MySQL DB ✓ Java-based Servers Tomcat/JBoss ✓ Repositories like Git, SVN Have a project to discuss? Let's connect!!
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    Cache Management
    Apache Kafka
    Spring Framework
    JavaScript
    Hibernate
    Redis
    PostgreSQL
    MySQL
    MongoDB
    Node.js
    React
    Angular
    Kotlin
    Java
    Spring Boot
  • $26 hourly

    • 4.4/5
    • (45 jobs)
    Greetings, I am a dedicated Software Engineer with a rich background of over 10 years in crafting mobile solutions, primarily through Flutter and React Native technologies. My expertise lies in transforming complex project requirements into seamless, high-quality mobile applications. By prioritizing the Agile development framework, I ensure the delivery of robust and scalable solutions that cater effectively to user needs and market trends. ➡️ Client Testimonials: ★★★★★ - "The Flutter application developed by Nilay was a game-changer for our business. The app’s performance and user experience exceeded our expectations. Nilay’s ability to translate our vision into a functional product was remarkable. Their commitment to quality and timely delivery sets them apart." - Robert Smith ★★★★★ - "Working with Nilay on our React Native project was a phenomenal experience. Their technical expertise and proactive approach helped us overcome complex challenges, resulting in a product that not only meets our needs but also enhances our customer engagement. I highly recommend Nilay for any mobile development project." - Maria Martinez ➡️ Core Competencies: 🔸Flutter Development: Expert in building high-performance, visually compelling applications for iOS and Android using Flutter. Proficient in Dart, with a deep understanding of the Flutter widget lifecycle, state management solutions like Provider and Riverpod, and seamless integration with backend services. 🔸React Native Development: Skilled in creating responsive and scalable applications using React Native, with a solid grasp of JavaScript/TypeScript, React hooks, and native modules. Experienced in bridging native functionalities for a seamless cross-platform experience. ➡️ Technical Skills: 🔸Advanced UI/UX design integration with tools like Figma, Sketch, and Adobe XD. 🔸Backend services integration using Firebase, AWS, and custom REST APIs. 🔸Comprehensive database management with MySQL, MongoDB, and NoSQL solutions. 🔸Cloud infrastructure deployment and management across Amazon, Heroku, and Google Cloud platforms. ➡️ Project Management and Collaboration: 🔸Agile project planning and execution using Jira and Miro. 🔸Effective team collaboration using communication tools like Teams and Slack. 🔸Proficient in version control systems including SVN, GIT, and Bitbucket.
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    Heroku
    API Integration
    Web Application
    RESTful Architecture
    Spring Framework
    AngularJS
    Java
    JavaScript
    Hibernate
    Neo4j
    Amazon Web Services
    MongoDB
  • $25 hourly

    • 4.7/5
    • (163 jobs)
    Over 20 years of experience in planning, developing and implementing various information technology and CRM solutions across Institutions.  Salesforce Certified Administrator. •Over 5 years of implementing customized CRM solutions to various clients like Verizon, Allianz Re-Insurance . •Automated Service, Sales and marketing processes using Salesforce Lightning flows and APEX/Visualforce • Implemented core Salesforce modules like Sales, Service, Financial, Health cloud for small businesses using Agile/Scrum methodologies • Integrated Salesforce with apps like Zoom, RingCentral, Box, Gmail using Zapier • Utilized Webservices/REST API to integrate Salesforce with third party applications. • Implemented Web to Lead, Web to Case and Email to Case channels. • Created OMNI Channel and Web Chat for customer service. • Built reports and dashboards to measure kpis. • Imported data into Salesforce using tools like DataLoader and workbench. • Implemented and created the full life cycle process for large-scale software development • Identified architectural improvements resulting in increased product reliability and responsiveness to new feature requests • Utilizing strong functional knowledge to drive product design • MS (Computer Science) , University of South Carolina, Columbia  Salesforce Certified Administrator  Sun Certified Programmer for Java 2 Platform  Sun Certified Web Component Developer for Java 2 Platform  Sun Certified Business Component Developer for Java 2 Platform  Project management for IT Profession TECHNICAL SKILLS • Java, J2EE, Java Servlets, JSP, JNDI, JFCs, EJB’s, Java Script, AJAX, Web services • Spring Webflow 2.5, STRUTS, Google Web Tool Kit, XML, XSL, ASP, .NET, Shell Scripts, JUnit • WebSphere 8.5, Tomcat, Web Logic 6.0, IIS, Silver Stream App Server, JRun, JWS • RAD 7.5, Eclipse, Visual Studio, JDeveloper, CVS, Clear Case, Stash, UML, Rational Rose • Oracle 11g, D2000, IBM DB2, MYSQL, MS SQL SERVER, MS ACCESS, Toad • Windows XP, IBM AIX and Unix (SUN SOLARIS 5.7), Silver Stream e-portal 2.2 • JIRA, Confluence, Cloud Services (PaaS), SalesForce Administration, APEX, Visualforce
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    IBM Db2
    Apache Struts
    Spring Framework
    XSL
    XML
    Salesforce Lightning
    Core Java
    Jakarta Server Pages
    J2EE
  • $55 hourly

    • 4.8/5
    • (157 jobs)
    ⭐⭐⭐ "Unni did excellent work! Trustworthy and capable. Great communication" ⭐⭐⭐ ⭐⭐⭐"Am writing this review to express my deep gratitude and appreciation for Unni's remarkable contribution to our project. Unni has demonstrated an exceptional ability in managing a complex integration task, a challenge that had previously stymied the efforts of five other individuals". ⭐⭐⭐ ⭐ I am senior developer specializing in Back-End and Cloud development. 👑 24 years of professional application development experience ✅ 150 ➕ Jobs ✅ 150 ➕ Reviews ✅ 3000 ➕Hours I have worked with ⭐High Profile clients⭐ in my Career which I have listed some of them below: ✅ FirstTennessee (Fortune 500) ✅ Amex (Fortune 500) ✅ EDB Norway ✅ ICICI Bank My core expertise and experience are: ✅ Android Application development ✅ Web development using Java 8, Spring Boot framework, JavaScript, HTML 5 ✅ Back end development with Java 8, Spring Boot frame work ✅ REST API development using Spring Boot ✅ Desktop development using Swing and JavaFX ✅ Micro services with Spring Boot ✅ Experience in Graph algorithms ✅ Bitcoin and Block chain development using Bitcoinj frame work ✅ Eclipse RCP development ✅ Open source application modification and development ✅ ChatGPT ✅ Java - 12+ years ✅ Java 8 - 5 years ✅ JavaScript - 5+ years ✅ Spring Boot - 3 + years ✅ Spring Framework - 3 + years ✅ React ✅ GraphQL ✅ AWS ✅ AWS Lambda ✅ Cloud Development ✅ AWS Amplify ✅ Aws AppSync ✅ DynamoDB ✅ Quarkus framework ✅ Micronaut ✅ CI/CD ✅ Android - 2 + years ✅ Spring Security - 2+ years ✅ WebRTC , WebSocket - 2+ years ✅ Python - 1+ year ✅ Node.js - 1 + year ✅ Play Frame work - 1 year ✅ GIS Development - 1 year I would like to go the extra mile to meet customer expectations for every project I am doing with 100% quality. I am looking for long-term association with clients to get complete benefits and am interested in achieving their business objectives and goals.
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    Apache Kafka
    API Development
    Micronaut
    Spring Security
    Spring Boot
    Core Java
    Apache Maven
    Spring Framework
    GraphQL
    Android
    Android App Development
    Python
    Firebase
    Java
    JavaScript
  • $15 hourly

    • 4.9/5
    • (5 jobs)
    HTML, CSS, JavaScript, JQuery Core Java (8 & 11), JSP, Servlet, Junit, and Mockito, Hibernate, MySQL, AWS (SQS, S3 Bucket, DynamoDB), Kafka & Web Services (REST & SOAP), Spring Boot, Microservices, Spring Framework (Core, AOP, WebMVC, JDBC, ORM & ORM), Lombok, MySQL, Docker, Git, etc. Deployment of Application on Windows / Linux Server using Docker Payment Gateway Integration using 3rd party API Online Transaction Processing (OLTP), Webhook handling, Payout handling, etc
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    Swagger
    Servlet
    Apache Kafka
    Docker
    Microservice
    JavaScript
    Java Persistence API
    Spring Boot
    Apache Maven
    Spring Framework
    Web Service
    Java
    Angular
    Hibernate
    Spring MVC
  • $75 hourly

    • 4.9/5
    • (262 jobs)
    Innovative, passionate, and quick software developer and architect with deep knowledge of programming concepts and internals. 15+ years of hands-on industry experience in programming, designing, managing, & leading software projects & companies. Change agent, problem solver with a passion for technology; skilled in grasping the big picture, conceptualizing, developing & implementing solutions by partnering closely with business leaders. Worked for different type of industries, which includes Health-care Informatics, Lab Informatics, MOOC, Online Education, ERPs, Electronic Design Automation (EDA), Semi Conductor, Heavy mechanical manufacturing, Travel, Pharmaceutical & e-commerce. Skilled in: Python | PHP | Apex | Objective C | Java | C/C++ | Flex | ActionScript | JavaScript | Perl | VB6 iPhone SDK | Android SDK | BlackBerry SDK | Flex SDK | Sancha Django | Django REST | Odoo | Web2Py | Zope | Plone | edX | CodeIgniter | .NET | Java EE SQL Server | MySQL | PostgreSQL | Sybase | DB2 | SQLite | MS Access Odoo | OpenERP | Salesforce CRM | MS SharePoint git | SVN | CVS | VSS | Unfuddle Scrum | UP | UML | CASE Tools | Poseidon | Rambaugh OMT ASP.NET | ASP | Telerik Visual C++| MFC | Win32 | COM | DCOM | OLE | Multithreading ANT | JDK | Digester| Struts | Servlets | JSP | EJB | WebSphere | Eclipse Web 2.0 | AJAX | CSS | XML | XSD OpenSource | github Knowledge Management | MediaWiki | PHP Health-care Informatics | ICD9 | ICD10 | HIPPA | HL7 SEMI Standards | EFEM | SEMI E87 | SEMI E90 | SEMI E40 | Robotics | SECS/GEM | SCADA Customs ERP | Landing Cost | HS Codes | WTO Standards Lab Informatics | Bika | OLiMS | LiMS | LIS Windows | MacOS | Linux | Ubuntu | Unix | EC2 Windows CE | Micro Controller Programming | Dynamic C
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    Ehealth
    Mapbox
    Apache Hadoop
    LIMS
    Android
    iOS
    Odoo
    web2py
    Django
    Laravel
    Python
    PHP
    WordPress
    React
    JavaScript
  • $15 hourly

    • 4.5/5
    • (7 jobs)
    I have 13+ java back end and microservice development experience. Services I offer, Develop any project using java Develop Microservice/Monothalic java backend from scrach Troubleshoot and issue fix in any java backend project Revamping old technology backend in to latest technology (Microservice) Expertise Domain - NFC, Mobile Money / Wallet, BlockChain, Cryptography, Cryptocurrency, IT Security, Stock Market, Document Automation, Banking, Online Reservations Languages/Technologies - J2SE/J2EE, Spring Boot, Spring MVC, DropWizard, Micro Service, EJB 3.0,Hibernate/Struts2, ,Vaadin (GWT base Ajax framework),Java Script, Anguler JS,PHP, HTML,XML, Java Script, Ajax,JSF, Active MQ,RabbitMq, Zookeepr,JMS, REST, SOAP, Grails & Groovy, C, Perl, CSS, TCP Netty framework, Nginx, WebSocket, Jhipster Application Software - Docker, Kubernetes, Amazon products, Axis2,JAX WS, WSAS - WSO2 Web services application server, WSO2 ESB, WSO2 API Manager, Liferay Portal, Ant, Maven, Rational Rose, Easy CASE, BOUML,NetBeans 6.8, Eclipse, STS, IntelliJ IDEA, WSO2 Developer Studio,Macromeadia Dreamweaver Databases / Server - Oracle, MySql Database Server, Postgres Apache Web Server, Sun application server, Apache Tomcat servlet Container, SMStool, JBoss Application Server, Service Wrappers Team Collaboration Tools - SVN, GitLab, BitBucket, CVS, GitHub Operating Systems - Windows 2010, XP,7, GNU/Linux
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    Apache ActiveMQ
    J2EE
    Spring Cloud
    RabbitMQ
    RESTful API
    HTTP
    MongoDB
    Java
    Kubernetes
    Microservice
    Docker
    Database
    Spring Boot
    XML
  • $50 hourly

    • 5.0/5
    • (53 jobs)
    I am the Founder & CTO of IOanyT Innovations which is a software development company formed in 2016 and currently employs more than 50 developers. I have over 22 years of experience with organizations like Hewitt, Xerox & Cognizant. Highly accomplished, innovative and results-oriented technology executive with ~22 years of experience in building complex software applications/systems, technology infrastructure and technology businesses to drive revenue growth, expand customer base and increase profitability. Proven track record in implementing technology solutions for a variety of businesses including HRO, Legal, Workforce Management, Call center, Telematics, IoT, Insurance, Transportation, Warehouse and Manufacturing. Built multiple enterprise products with highly scalable architecture and technologies and have successfully executed several projects Globally. My expertise focuses on strategic planning, Innovations, building and extending large software systems and infrastructure, team management, technical architecture, design, product management, program management and project management for high availability, high volume transactional systems, websites and online and mobile applications. Our offerings: - Software Development (Web and Mobile) ----- Java ----- Python ----- NodeJS ----- Angular ----- React - All things AWS and GCP - Security - Advanced Network - Server-less Architecture and development - Cloud migrations - Cloud architecture - Cloud cost optimization - Compliance: HIPAA/SOC2 - IaaS/PaaS/SaaS - Disaster Recovery - Storage solutions - Databases - IoT - AWS IoT Core - Apache Airflow Certifications: - AWS TCO and Cloud Economics - AWS Technical Professional - AWS Business Professional - AWS Certified Solutions Architect - Associate - AWS Certified Solutions Architect – Professional - AWS Certified Advanced Networking - Specialty
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    Machine Learning
    Artificial Intelligence
    Network Security
    React
    Google Cloud Platform
    Web Application
    AWS Glue
    API Development
    Node.js
    Cloud Architecture
    Amazon Web Services
    Internet of Things Solutions Design
    J2EE
    AngularJS
    Python
  • $45 hourly

    • 4.9/5
    • (17 jobs)
    I am a Senior Software Engineer with 8 years of experience in developing WebSites, Web Applications, CRM/ERP, and other custom Software based on clients' requirements. ⭐ Type Developments: Landing page, eCommerce, Business website, SaaS, CRM/ERM, Bots ⭐ Service Types: Сreation, Redesign, Optimization, Integration, Сustomization ⭐ My skills: ✅ Php – laravel 5+, Yii 2, Codeigniter 3-4, Phalcon 3, ✅ JS – Node.js, React.js, Vue.js, JQuery ✅ Python – Django ✅ HTML, CSS – Bootstrap, Vuetify, SASS, Animation ✅ Server - Nginx, Jenkins, Docker ✅ parser development, API ✅ Database – MySQL, PostgreSQL, NoSQL ✅ Microservices – Elastik Search, Redis, Memcached ✅ Architecture – design patterns, SOLID, DRY, KISS, YAGNI I also have extensive experience working with someone else's code, site parsing, integration with third-party services, refactoring, site optimization for SEO queries, writing trading bots or chat bots end etc.
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    HTML5
    Yii
    CSS
    Web Development
    NGINX
    API
    Bootstrap
    Redis
    Laravel
    MySQL
    PHP
    Database
    React
    JavaScript
    Vue.js
  • $40 hourly

    • 5.0/5
    • (26 jobs)
    I'm an upscale developer/system architect with a deep focus on blockchain technology. I use Solidity & Rust for smart contracts, Golang and Node.js for the Backend, and React.js for the Frontend. My background covers a broad range of web3 solutions in various industries. - Core blockchain development - ERC20 Tokens and Coins development - Metaverse technologies - Smart contracts and decentralized applications (dApps) - DeFi platforms - NFT implementations - DEXes and CEXes - Trading bots and platforms - DAOs - Layer 2 solutions - Multi-chain bridges, migrations of tokens - Privacy-focused blockchain projects - Consensus algorithms - Oracles and data feeds - Blockchain security and auditing I specialize in projects based on Ethereum, BSC, and other EVM-compatible blockchains, as well as Solana, Polygon, Avalanche, and more. I have an outstanding reputation for consistently delivering high-quality work to my clients, and I'm recognized for my reliability and unwavering commitment to project success.
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    Blockchain
    Web3
    DeFi
    Layer 2 Blockchain
    NFT
    DApps
    Rust
    Smart Contract
    React
    Blockchain, NFT & Cryptocurrency
    Cryptocurrency
    Node.js
    Solidity
    Golang
    Blockchain Development
  • $40 hourly

    • 5.0/5
    • (74 jobs)
    **EXPERT VETTED BY UPWORK and among Top 1% talent on Upwork** I am a Full-Time Freelance IT consultant with more than 12 years of rich and varied experience in providing solutions to clients in various domains in the form of – • Full stack web application development • Enterprise applications development • Backend web services development • Desktop application development • Cloud infrastructure development I have extensive experience of developing applications in - Java, J2EE, Spring, JPA, Hibernate, Angular, Typescript and React Framework. BACKEND DEVELOPMENT - I have worked upon and developed backed of at least 100 different applications to date, which involves extensive experience working with Event Driven Architecture, Micro services architecture and Backend Web Services development. I also have strong hands-on experience and rely heavily upon TDD and BDD approach of Software development FRONT-END DEVELOPMENT - At the front-end, my expertise lies in working with – • JSP • JSF • Vaadin • JavaScript • HTML5 • CSS • Ajax • Bootstrap DESKTOP APPLICATION DEVELOPMENT - I have strong knowledge and experience of working with and developing Desktop applications using Java Swing and JavaFX. I have experience in developing applications for Mac, Windows as well as Linux. CLOUD INFRASTRUCTURE DEVELOPMENT - • 9x AWS Certified and "Microsoft Certified" Azure Solutions Architect Expert. • Extensive experience with using Docker, Kubernetes, Terraform. • Dockerisation and Orchestration, automating CI/CD Pipelines, VPN Setup, Monitoring and Logging, Cloud Cost Optimisation are my Forte. • Active user of AWS and Azure and excellent in picking cost-effective and secure solutions using these platforms. OTHER PROFICIENCIES - • Skilled in SQL as well as NoSQL programming. - Relational Databases - Postgres, MySQL, SQL Server, Oracle and DB2. - Non-Relational databases - MongoDB, DynamoDB • Skilled with ElasticSearch and Redis SOFT SKILLS – • Individualistic personality – who likes to find solutions. • Strong work ethic - my past work can vouch for this. • Positive attitude- comes in handy, while solving complex problems. • Excellent command over English language. • Excellent Communication skills. • Believes in Team work and joint efforts - can mingle into your current team easily. • Leadership skills - can lead and take up responsibility, even in difficult situations. • Highly dedicated personality - I don’t get bogged down by hiccups, and work to sail my way through them. As I am working in a highly dynamic field, so I keep updating myself with latest trends and developments in the field of software development, thus ensuring HIGH VALUE WORK for my clients. My technical capabilities, hardworking nature and past record of providing value to my clients can be vouched by client reviews on my profile. Thanks & Cheers!
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    Cloud Computing
    DevOps
    Microsoft Azure
    Amazon Web Services
    CI/CD
    RabbitMQ
    SQL Programming
    Hibernate
    Microservice
    RESTful API
    Spring Security
    Spring Boot
    Spring Framework
    J2EE
    Java
  • $50 hourly

    • 4.8/5
    • (83 jobs)
    Expert developer in full stack development Real project experience with AI development, including ChatGPT, ImageToVideo, Assistant, RAG
    vsuc_fltilesrefresh_TrophyIcon ZK
    Selenium
    React Native
    Kotlin
    Spring Framework
    Test Design
    Microservice
    JavaFX
    Selenium WebDriver
    Apache Kafka
    Spring Cloud
    Python
    Java
    JavaScript
    Kubernetes
  • $18 hourly

    • 4.9/5
    • (27 jobs)
    Java J2EE (Spring framework) working experience on spring framework.A highly salable e- commerce solution. ▪ Database : apache cassandra ▪ spring security used in project also session maintaining and authentication & authorization. ▪ FrontEnd : angular js it gives single page application ▪ working with restfull webservices ▪ Familiarity with JUnit, unit testing and continuous integration best practices Java J2EE spring boot I made my own web Application of REAL ESTATE property dealing with admin panel and UI and backend as java spring boot ▪ Database : SQL using JPA ▪ spring security used in project also session maintaining and authentication & authorization. ▪ FrontEnd : angular 4 with component and OOP approach more like a developer way ▪ working with restfull webservices ▪ Familiarity with JUnit, unit testing and continuous integration best practices Java Fx Designing And Developing applications from scratch, Hands on SQl server configuration as per application need Responsibilities: ▪ Design UI of Application. ▪ Developing application using FXML, SceneBulider , UI-controls and CSS. ▪ Establishing Sql Server for communication with JavaFx . FRONT-END ANGULAR-4+ : a great experience of making angular 4/7+
    vsuc_fltilesrefresh_TrophyIcon ZK
    Custom Content Management System
    Angular 2
    Java
    jQuery
    HTML
    Spring Boot
    SQL
    Angular
    MySQL
    Spring Framework
    Git
    JavaScript
    Java Servlet API
    PostgreSQL
  • $33 hourly

    • 4.8/5
    • (100 jobs)
    We are a highly motivated group of software professionals, with a vast experience of working with different types of Web-based, Desktop and Embedded Software Applications. We also have experience of implementation of CMMI. Our core skills are in the domains of Java, .Net, and Databases for Web, Desktop and Mobile Applications. Languages known are Java, C#, php, and cobol.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Vue.js
    Yii
    Angular
    SQL Programming
    API Integration
    ASP.NET
    React Native
    GitHub
    Google Cloud Platform
    Node.js
    React
    Apache HTTP Server
    PHP
    Java
    HTML5
  • $45 hourly

    • 4.3/5
    • (63 jobs)
    🏅 Top Rated Plus Freelancer 🕒 1400+ hours on Upwork ✅ 100% Job Success Score I am a results-oriented bilingual with 11+ years of experience professional who is willing to work with clients worldwide. In my case, I am open to working with startup companies, small businesses, and even multi-national firms. I am deeply involved in all my projects from start to finish. I listen to my clients attentively and provide them a vision for what they want, and then I collaborate with them to create and execute a plan of action. I continuously offer my clients the pros and cons of each choice they make and convey my recommendations for their selections. I would like to give quick short profile summary as below Skills ---------------------------------------------------------------------------------------- • 11+ Years of IT Experience relevant to Java with BFSI domain like Banking & Insurance • Core skills SpringBoot, RESTful webservices, Microservices, JPA • Experience in Unit Testing with JUnit5, Mock/Mockito • Good experience with working on front end applications using JavaScript, JQuery and Bootstrap. • Strong experience with Agile or Scrum methodologies. • Good communicator in English • Experience with SQL Databases (e.g. Oracle) • Strong experience with GIT/BitBucket, JIRA, Jenkins, Confluence, Docker. • Good experience working with Tomcat, Jboss, WildFly • Experience working on Cloud technologies (AWS) • Experience using Apache Solr • Good Experience developing unit / integration test cases using Junit /TestNg. • Experience in Integration, Component and End-to-End Testing • Knowledge of Behavior Driven Development (BDD) for automated acceptance tests • Good ability to understand and work with code developed by other developers. • Very comfortable to work independently with minimal supervision Why me? -------------------------------------------------------------------------------------------- -Provide High Quality Services -Delivers Bug Free Code -Good Listener and Great Communication Skill. -Uses Latest technology for Development. Services I provide ---------------------------------------------------------------------------------------- *Software Development *Web application, Development & Maintenance *Creating Template and Reports *Finding Bug and Resolve. *Solve Assignments and Programming Problems. I would be happy if employed by you and will work to the best of my ability.
    vsuc_fltilesrefresh_TrophyIcon ZK
    RESTful Architecture
    RESTful API
    Microservice
    EJB
    Jakarta Server Pages
    Web Service
    Spring Boot
    Spring Framework
    JavaFX
    Swing
    Git
    Java
    JavaScript
    MySQL
  • $33 hourly

    • 5.0/5
    • (72 jobs)
    👩‍💻 I'm am a professional Full-Stack Web Developer with 10+ years of experience. And I lead the incredible team 🔥 Wiregate. We are focusing on turn-key 🔑 projects. Starting from estimations and prototyping and finishing with Fault Tolerant/Highly Available Kubernetes cluster deployments 🚀 Here is a shortlist of services that we provide: ✅ Web Development; ✅ Mobile Development; ✅ System Administration and DevOps; ✅ Web/Mobile Design; ✅ Logo design; 🛠️ Do not hesitate and start working with us.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Next.js
    TypeScript
    PostgreSQL
    Web Application
    HTML5
    Laravel
    Python
    HTML
    PHP
    Node.js
    Web Development
    CSS
    React
    API
    JavaScript
  • $30 hourly

    • 5.0/5
    • (71 jobs)
    Known Skills :- Core JAVA , JavaFX, SpringBoot, REST Api Expert in Core Java. Expert in creating any kind of Desktop Applications using JavaFX. 100 % accuracy and 100 % client satisfaction.
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    Data Scraping
    XML
    Online Research
    Web Crawling
    HTML
    ETL
    JavaFX
    Java
    Desktop Application
    MongoDB
  • $50 hourly

    • 4.9/5
    • (8 jobs)
    I am an Engineer major in Computer Science with 12+ years of software development using various technologies in Java and Python stack. In addition to my in depth technical skills and proactive communication, I bring value with my organization skills and understanding of cultural nuances from years of working in US and Europe. I am good at delivering project with high quality standard, within the estimate and time. I believe in maintaining clarity and transparency on scope, availability, progress and delivery schedule. My skills are ---------------------------------------------------------------------------------------- - Leading team with SCRUM based project/product delivery. I know the role of P.O, S.M, Team, etc pretty well and can lead a team. - Technical Architecture, Solution Architecture with various enterprise system integration CRM, ERP, Sync/Async Events, REST/SOAP API - Solution development with Java Stack --- Java 8, Spring boot, Hibernate, Hazlecast, Kafka, Tomcat, Jboss, Jenkins, --- PostgreSQL, MySql, Cassandra --- ELK Stack (ElasticSearch, LogStash, Kibana) --- Solution deployment on Amazon AWS, Tomcat, Jboss --- HTML5, CSS4, JavaScript, Angular, Ionic - Solution development Python stack --- Python, Flask, Apache Kafka, --- Cassandra, PostgreSQL, MySql --- ELK Stack (ElasticSearch, LogStash, Kibana) --- HTML5, CSS4, JavaScript, Angular, Ionic - Working with the development and management tools (Git, Jira, Trello) Highlights of my working process are ---------------------------------------------------------------------------------------- # High standards of technology work with years of experience. # Experience with SCRUM, Kaban # Clearly defined estimate, milestones. # Status update and progress reviews of working code at agreed intervals. Services I provide are ---------------------------------------------------------------------------------------- # Leading a team for Software Development, Integration with Agile Methodologies # Backend API development with REST, SOAP technologies # Integration of solutions with CRM, ERP and other enterprise systems with Synchronous, Asynchronous mode. # Solution and technology architecture. # Web and Mobile UI integration with API # End to end development of Mobile and Web Application with partners
    vsuc_fltilesrefresh_TrophyIcon ZK
    pandas
    Angular 5
    Hibernate
    Python Scikit-Learn
    Apache Kafka
    Python
    Spring Boot
    Flask
  • $22 hourly

    • 4.9/5
    • (55 jobs)
    I am a Full Stack Developer having 14+ years of experience. I've been working on Website applications, API development and integration, Payment gateway integration, Hybrid apps, and Window Desktop applications and successfully completed Website development projects, API integration projects, Payment gateway integration projects, Web API projects, and Window Desktop Software. Skill-set: ✅ PHP, React.JS, React Native, Vue JS, Redux, React Hooks, Node, Tailwind CSS,Angular.JS, jQuery, Bootstrap, TypeScript, Firebase, HTML5, and CSS3 ✅ Laravel, CodeIgniter, Yii, Zend, Joomla, Spring, Cake PHP ✅ Chrome Extension using JS, React.js, and Typescript ✅ WordPress configuration, Woocommerce, Shopify, Theme Customization, Plugin Development ✅ MySQL, MongoDB, NoSQL, Pl/SQL, MS SQL, Oracle ✅ Rest APIs (GraphQL, Node.js, Express.js, Laravel, Symfony, Codeigniter, Yii) ✅ Payments API's Integration with Stripe, PayPal, and AfterPay ✅ AWS, ECS, Lamda, S3 bucket, Elastic Beanstock deployment, Docker, Load Balancing ✅ Git, Composer, Grunt, NPM, Bitbucket, Bitbucket, Gitlab, Jenkins, Heroku, Autodeployment ✅ Agile, SDLC, V-Model. I understand that most software will always be improved or changed. Therefore, I always try to think outside of the box, thinking of the unknown conditions that might happen in the future and do some necessary actions according to that. Those conditions can be related to security, huge data processing, dynamic changes in the future, etc. It was proved that this kind of thinking and action will be a great help in the future when everything becomes more complex.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Amazon Web Services
    Node.js
    WooCommerce
    WordPress
    API Integration
    MySQL
    API Development
    HTML5
    CSS 3
    Reactive Programming
    React
    JavaScript
    PHP
    React Bootstrap
    NoSQL Database
  • $40 hourly

    • 4.9/5
    • (36 jobs)
    I am having 12+ years of professional experience in Design and Development of Java and Spring based Desktop and Web Applications starting from Requirement Gathering phase to Testing and Delivery Phase. I have worked with giants like Tech Mahindra, Ericsson etc. as Software Engineer. My Skill set include - Java 11, JEE, Spring (All Modules), Spring Boot, Spring Cloud, Spring MVC, Spring Security, OAuth 2.0, Thymeleaf, JSP, Servlets, JSTL, EJB, JSF, REST & SOAP Web Services, Hibernate, JPA, MySql, Oracle, PL/SQL, JQuery, AJAX, HTML5, CSS3, Angular 9, GWT. I worked extensively on many servers like JBoss, Sailfin/Glassfish, Tomcat, Weblogic on Windows and UNIX and MAC environment. I extensively worked on Eclipse and Netbeans as IDEs and well aware of many Eclipse plug-ins like Debugger, JUnit, SVN/HG Plugin, WTP etc. I have good experience is SCM packages like GIT (GitHub, BitBucket), SVN, Mercurial (Hg). I am well versed with several build tools like MAVEN, ANT. Also have good experience in CI (Continuous Integration) tools like Jenkins and Hudson.
    vsuc_fltilesrefresh_TrophyIcon ZK
    Angular 5
    Spring Boot
    Bootstrap
    CSS 3
    Hibernate
    Spring Security
    HTML5
    J2EE
    Front-End Development
    Angular
    TypeScript
    Spring Framework
    MySQL
    Java
    JavaScript
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