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Check out Java EE developers with the skills you need for your next job.
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  • $45 hourly

    • 4.9/5
    • (146 jobs)
    I have 14+ years of experience in web development, mobile development application. I have done many works with PHP and Java for web application especially with different MVC framework like CakePHP, Grails, Laravel, Ruby on Rails, CodeIgniter, Zend, Symfony, Yii and different CMS like concrete5, moodle, modX. I am highly experienced in any MVC Framework even with different programming languages. I am also internationally certified on Java. I have done android game application and android home widget application in Java. I have experience with many programming language like Python especially Pylons and Django web application, Ruby especially Ruby on Rails web application, Java with Grails including script languages such as ajax, json, javascript, xml, rss, xslt and flex for active script language and with content management systems. I have been using sql server, mysql, oracle, mongodb and sqlite3 for database. I have participated on National and International project. I have masters on Software Engineering.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Concrete5 CMS
    RESTful API
    MongoDB
    PostgreSQL
    Spring Boot
    Java
    React
    Ruby on Rails
    PHP
    Python
    Grails
    Laravel
    MySQL
    CakePHP
    CodeIgniter
  • $40 hourly

    • 5.0/5
    • (3 jobs)
    I'm a well seasoned full-stack developer with backend specialization and more than 4+ years of experience in Node.js, React.js, JavaScript, HTML5, CSS3, MySQL, MongoDB. My specialization is developing web applications from scratch with the focus on the code quality and flawless usability. My goal is to build applications that allow finding a product-market​ fit as fast as possible. I particularly enjoy working for solo entrepreneurs and startups who want to see their idea executed fast and effective. But also have experience working with big enterprises. I am very detail-oriented while remaining focused on meeting the deadlines. I don’t hesitate to take extra time at the beginning of every project to exchange ideas, listen and ask, in order to get the most accurate picture of what my clients want for their applications. My skill set: - AngularJS, Angular 6,7 - Node.js (Nest.js framework). - React.js, React. - HTML5/CSS3/Bootstrap. - RestAPI, Swagger. - Version control: Git. - 3rd party APIs. - Twilio, Google API integration. - Virtual environments and cloud services. Feel free to contact me about your project ideas!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Ecommerce Website Development
    Angular 6
    NestJS
    Angular
    JavaScript
    HTML5
    Node.js
    AngularJS
    React
    CSS 3
  • $35 hourly

    • 5.0/5
    • (13 jobs)
    👋I am React.js | React Native | Node.js Expert with 5+ years of development practice. I've also been working with Flutter for 2 years. My expertise is building high-quality Web and Mobiles Applications using React Framework. My background ranges from frontend coding to building backends that use cloud services, RESTful API, Firebase, etc. Regardless of the type of the project​, my aim is to create scalable and flexible applications with ​​clear and extensile codebase. Mobile Development: 🔸Flutter 🔸React Native 🔸React Navigation Frontend Development: 🔸React.js 🔸Redux 🔸Redux-Saga 🔸UI Development with Storybook Backend Development: 🔸Node.js 🔸Firebase Data Management: 🔸GraphQL 🔸Apollo 🔸Realm Web Development: 🔸HTML5 🔸CSS3 🔸SASS 🔸LESS 🔸Bootstrap Database Management: 🔸MySQL 🔸PostgreSQL (PgSQL) 🔸MongoDB I am always open to new ideas and like solving challenges. Don’t hesitate to contact me regardless of project complexity you need! Skills Set: HTML5 | CSS3 | Sass/Scss | Responsive Web Design | Cross-Browser Compatibility | Web Accessibility | SEO Optimization | Frontend Architecture | JavaScript | jQuery | TypeScript | React | 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 | 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 | ReactJS | React | React.js | Next.js | nextjs | Node.js | nodejs | node | backend | nest.js | nestjs | nest | flutter | react native |
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Next.js
    NestJS Development
    NestJS
    Redux
    Flutter
    React Native
    Web Development
    React
    Node.js
    HTML5
    JavaScript
    CSS 3
    Angular
  • $30 hourly

    • 5.0/5
    • (28 jobs)
    With over 14+ years of experience delivering innovative and scalable digital solutions, I specialize in transforming ideas into high-performing applications and websites. I aim to help businesses streamline operations, boost efficiency, and achieve measurable growth through cutting-edge technology. 🔸What I Bring to the Table🔸 ✦ Full-Stack Development ➜ Expertise in building dynamic, scalable, and user-friendly web applications using modern frameworks and technologies. ✦ AI Integrations ➜ Seamlessly incorporating artificial intelligence to automate processes, improve user experiences, and drive smarter decision-making. ✦ Backend Mastery ➜ Advanced proficiency in PHP, Python, and Laravel for creating powerful, secure, and efficient backend systems. ✦ CMS Excellence ➜ Crafting and customizing WordPress and Shopify websites tailored to your unique needs, ensuring seamless functionality and stunning designs. eCommerce Solutions: Delivering end-to-end eCommerce platforms with integrated payment systems, inventory management, and user-friendly interfaces. ✦ API Development ➜ Designing and integrating robust APIs to connect systems and optimize workflows. 🔸Why Work With Me?🔸 ✦ Proven track record of delivering projects on time and within budget. ✦ Strong communication skills to ensure smooth collaboration and transparency. ✦ Client-centric approach to ensure your vision is fully realized. ✦ Passion for innovation and a commitment to staying ahead of industry trends. Let’s collaborate to bring your project to life. Whether you need a custom web application, an AI-powered solution, or a feature-rich eCommerce platform, I’m here to help. Ready to get started? Let’s discuss your goals today!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Ecommerce Website Development
    Ecommerce
    MERN Stack
    MEAN Stack
    Ruby on Rails
    Node.js
    Python
    PHP
    JavaScript
    Laravel
    Amazon Web Services
    WP Rocket
    React
    WordPress
    Software Architecture & Design
  • $22 hourly

    • 5.0/5
    • (15 jobs)
    I am a Top-rated JavaScript, React.js, HTML/CSS freelancer with numerous 5-star reviews, including overly positive feedback. Ready to take care of your project. What I will bring to the table: ✅ Frontend Frameworks & Libs: React.js (versions: 16,17 and 18), Vue ✅ Responsive HTML-coding: HTML5/CSS3, SCSS, Flexbox, Grid ✅ State management libs/patterns: zustand, jotai, MobX ✅ UI libraries: Tailwind, Bootstrap, NextUI, daisyUI, Foundation ✅ Backend stack: Node.js, Express.js, MongoDB (Learing now) ✅ Authorization with JWT ✅ Experience with GIT and Vercel deployment ✅ Worked in teams with SCRUM/Agile methodologies Why you should choose me: ✅ Passionate about my work. ✅ Strive to meet deadlines. ✅ Extremely responsive and keeping all lines of communication. ✅ Kindness and politeness towards my team members. I've worked on both simple and complex projects ranging from SPA to EA developments to illustrate some of them: ✅ Foreign Currency Exchange ✅ Real Time Weather App ✅ Movie App ✅ Online Blog ✅ Summer Catchers Let’s build a fruitful collaboration!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Figma
    PSD to HTML
    Bitbucket
    Vue.js
    AJAX
    jQuery
    Zurb Foundation
    Web Development
    Git
    JavaScript
    Bootstrap
    CSS
    HTML
    React
  • $30 hourly

    • 4.0/5
    • (3 jobs)
    Full Stack Developer with experience analyzing problems, gathering requirements and providing solutions by developing web applications or other services and functions. Experienced in front end development, back end development and even data engineering. Reliable for critical thinking, and analyzing and formulating logic to be integrated into the applications.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Web Development
    AngularJS
    HTML
    React
    Web Application
    JavaScript
    Angular
    CSS
    SQL
    Kubernetes
    API
    Spring Framework
    MySQL
    Spring Boot
    Java
  • $50 hourly

    • 4.9/5
    • (9 jobs)
    I am a System's Engineer living in Argentina and I have been working as a Senior Software Engineer for the past 9+ years. These are some projects I have worked on: jBilling: Canadian company that has a Complex Billing System ideally for Telco companies or any company that sell services based on subscriptions. Stack: Java J2EE, Grails, Hibernate, Spring, Hbase, Hadoop, ActiveMQ, RabbitMQ, Apache Velocity, Jasper Report, jQuery, HTML, CSS and PostgreSQL Taaxii: Argentinean Company that has a solution for Travel Logistics for Company Employees. Stack: Java J2EE, Hibernate, GWT, Ibatis, Android, iOS, MySQL, AWS EC2, AWS S3, AWS RDS and Other AWS Services. Evolticom: Sweedish Company that had a CRM Web Solution. Stack: Grails, Bootstrap and PostgreSQL. DXC: Former HPE area where I worked with them to implement jBilling for the City of Dubai. FusionSleep: US Company that had a solution to control Truck drivers sleep behaviors. Stack: Grails, HTML, CSS and PostgreSQL. Autoentrada: Argentinean Company with a web solution for selling theater tickets online. Stack: Java J2EE, Struts, Ibatis, Jasper Report, HTML, CSS, PostgreSQL. Workia: Argentienan Company specialized in Human Resources Management. Stack: Java J2EE, Spring Boot, Angular JS, Microservices, HTML, CSS. SouthWest Airlines: Main US Low Cost Airline Company. I was involved in migrating existing applications to Java Web based solutions. Stack: Java J2EE, Spring, Spring MVC, Hibernate, HTML, CSS, Grails. Main roles and responsabilities I was involved in these projects: Analysis, Technical Design, Development, Testing, Team Leader, Technical Leader, DevOps.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    iOS Development
    SQL Programming
    J2EE
    Android
    Java
    Grails
    Hibernate
    jQuery
  • $28 hourly

    • 4.7/5
    • (47 jobs)
    𝟏8𝐊 𝐇𝐨𝐮𝐫𝐬 𝐥𝐥 $𝟐𝟎𝟎𝐊 𝐄𝐚𝐫𝐧𝐞𝐝 𝐥𝐥 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 *** Upwork TOP RATED PLUS Profile ( 1 of the Top 3% Freelancers). *** I am Mohit Mali, a seasoned professional with over 11+ years of expertise in developing Web and Mobile applications. Throughout my career, I have spearheaded the creation of over 60 products and applications, strongly emphasizing crafting engaging UI themes and seamless extensions. My commitment lies in delivering solutions that boast aesthetic appeal and excel in functionality, speed, and optimization. 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 𝗢𝗳𝗳𝗲𝗿𝗶𝗻𝗴𝘀: 🔹Web Application Development 🔹API Development and Integration 🔹Web Design and Redesign 🔹eCommerce Solutions 🔹 Mobile App Development 🔹 Project Management 🔹CRM Development 🔹Frontend and Backend Development 🔹Project Analysis and Consulting -WHY ME ?- I have a 100% success rate for all my projects and will be available more than 40 hours per week and able to start your project as soon as possible according to you. My response time is less than 1/2 hour. Please check my Portfolio here and also check Client's feedback for the projects completed by me. I work with honesty and ethics. My aim is to provide excellent and cost effective services to my clients. 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞 𝐭𝐨 𝐛𝐫𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐢𝐝𝐞𝐚𝐬 𝐭𝐨 𝐟𝐫𝐮𝐢𝐭𝐢𝐨𝐧!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Figma
    Serverless Stack
    UI/UX Prototyping
    Internet of Things
    AWS Lambda
    Blockchain Development
    Serverless Computing
    Technical Project Management
    Docker
    Front-End Development
    GitHub
    Android SDK
    Mobile App Development
    Android App Development
    Java
  • $50 hourly

    • 5.0/5
    • (39 jobs)
    I am a Java Developer with 7+ years of professional experience in developing Web and Enterprise Applications using technologies like Java / J2EE, Spring, REST ,SOAP webservices, Struts, Hibernate, iBatis, JavaScript, jQuery. I have experience as a Full-Stack developer with more emphasis on the backend. I was part of the Order Management System team for Sears Holdings, which is the system which manages an order placed in Sears and Kmart sites till it is fulfilled to the customer, by communicating with multiple systems. Improved the efficiency of the orders sent to Kmart store system by designing and implementing a Merchandise Pickup subsystem which allows the orders to be held during the store closed hours. I was selected under Wipro Technologies' STAR Hire Program 2014. I was part of the team that designed and implemented a Dealer Management System for Mahindra & Mahindra, which is a centralized application that captures customer, vehicle and inventory information to facilitate better inventory management and provide visibility on dealer operations. I was also part of NextGen Medicare Advantage Team, which provides real-time eligibility and enrolment, member management, financial reconciliation and encounter data services to Medicare Advantage, compliant with CMS requirements.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    AWS Fargate
    Object-Oriented Programming
    J2EE
    Android App Development
    SOAP
    Software Architecture & Design
    Docker
    PostgreSQL
    SQL
    Spring Boot
    MySQL
    Apache Maven
    Hibernate
    Java
    Spring Framework
  • $35 hourly

    • 5.0/5
    • (6 jobs)
    If we work, you can count on me. I: - ensure clear communication; - pay attention to details; - strive to deliver in the shortest timeframe. Top technologies I like and use often: Frontend - Redux, RTK, SWR, Apollo GraphQL Client - Next.js (App & Pages), CRA, React Router - CSS Modules, Tailwind CSS & UI, Headless UI - Storybook, Testing Library, Jest, MSW - PNPM, Yarn & Workspaces, Lerna, Nrwl Nx Backend: Node.js - NestJS (RESTful & GraphQL APIs) - TypeORM, Prisma - Apollo GraphQL Server Backend: Go (Golang) - PGX, GORM, GoRedis - Gorilla, Gin - Protocol Buffers (Protobuf), gRPC - Temporal Platform & Go SDK DevOps: Automation tools - Docker & Compose - GitHub Actions DevOps: Infrastructure - DBs: Redis, Postgres, Mongo, Neo4j - PaaS: DO, AWS, Heroku, GCP, Vercel, Appflow
    vsuc_fltilesrefresh_TrophyIcon Java EE
    DevOps
    Golang
    TypeScript
    JavaScript
  • $60 hourly

    • 5.0/5
    • (7 jobs)
    Experienced backend Java developer with over a decade of expertise in developing and maintaining high-quality software solutions. My career includes roles at Accenture, Credit Suisse and GFT Group. Based in Poland, I have also worked in London with Luxoft and Unibet, a leading company in the gambling industry. Top-rated Upwork freelancer, ranked in the top 5% of performers with a 100% Job Success Score. Proficient in Java, Spring Boot, REST APIs, and cloud technologies (AWS). Adept at working with distributed international teams, emphasizing clean code practices and delivering challenging projects. Programming Languages: Java, JavaScript, Scala APIs & Integrations: RESTful APIs, GraphQL, WebSocket, RabbitMQ, JMS, Kafka Cloud & DevOps: AWS (Cloudformation), Docker, CI/CD (Jenkins, GitHub Actions) Frameworks & Tools: Spring Framework, Spring Boot, Hibernate, JPA Version Control: Git, GitLab, Bitbucket Databases: MySQL, PostgreSQL, MongoDB, Redis Testing: JUnit, Mockito, Cucumber, TDD Others: Observability, Keycloak, Angular, Maven, Bash
    vsuc_fltilesrefresh_TrophyIcon Java EE
    CI/CD
    Amazon Web Services
    Spring MVC
    Java Persistence API
    Hibernate
    API
    Spring Boot
    RESTful API
    SQL
    Docker
    Web Application
    AngularJS
    Java
    MySQL
    Spring Framework
  • $35 hourly

    • 4.8/5
    • (4 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 Java EE
    Flutter
    Spring Boot
    Linux System Administration
    Jakarta EE
    Vaadin
    PrimeFaces
    Bash
    PostgreSQL Programming
    TypeScript
    Angular
    Ansible
    Android
    Database Architecture
    Java
    PostgreSQL
  • $25 hourly

    • 4.8/5
    • (39 jobs)
    Hello! I’m an experienced 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with over 𝟳,𝟬𝟬𝟬+ 𝗵𝗼𝘂𝗿𝘀 of development time across various projects. I specialize in 𝗝𝗮𝘃𝗮, Microservices, and 𝗖𝗹𝗼𝘂𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, delivering robust and scalable applications. Whether it's back-end systems or dynamic front-end interfaces, I ensure high-quality solutions that focus on security, performance, and reliability. 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - 🔧 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱:: Java, Spring Boot, Hibernate, JPA, Microservices - 💻 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱: Angular, React, JavaScript, JQuery - ☁️ 𝗖𝗹𝗼𝘂𝗱: AWS, Google Cloud, Digital Ocean - 💾 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, PostgreSQL, MongoDB, Oracle - 🔐 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: OAuth2, JWT, OpenID, LDAP, X.509 - 🚀 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗜/𝗖𝗗: Jenkins, GitLab, Kubernetes, Docker - 📝 𝗔𝗴𝗶𝗹𝗲: Scrum, Kanban, Jira 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: With a solid track record of working with 𝗙𝗼𝗿𝘁𝘂𝗻𝗲 𝟱𝟬𝟬 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀, I’ve delivered projects in 𝙁𝙞𝙣𝙏𝙚𝙘𝙝, 𝘏𝘦𝘢𝘭𝘵𝘩𝘤𝘢𝘳𝘦, 𝘦𝘊𝘰𝘮𝘮𝘦𝘳𝘤𝘦, 𝘢𝘯𝘥 𝘛𝘦𝘭𝘦𝘤𝘰𝘮. I handle projects end-to-end, from gathering requirements to final deployment, ensuring seamless delivery. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜’𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵: - 💳 FinTech - 🏥 Healthcare - 📞 Telecom - 🛒 E-commerce - 🏠 Real Estate - 🍴 Food & Beverage 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: - 🕒 7,000+ hours of successful project deliveries - 🔧 Expertise in complex, scalable systems - ⭐ 5-star rated professional with a focus on delivering top-quality solutions - 📈 Flexible and scalable architectures for all your project needs - 🤝 End-to-end project management for smooth and timely delivery 𝗪𝗵𝗮𝘁’𝘀 𝗡𝗲𝘅𝘁: Imagine working with someone who not only understands your project’s technical needs but also foresees challenges before they arise. If you're ready to collaborate with a developer who is as committed to your success as you are, let’s chat! I’d love to hear more about your project goals, discuss your vision, and share how my experience can turn it into reality. Drop me a message, and let’s take the first step together!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Cache Management
    Apache Kafka
    Spring Framework
    JavaScript
    Hibernate
    Redis
    PostgreSQL
    MySQL
    MongoDB
    Node.js
    React
    Angular
    Kotlin
    Java
    Spring Boot
  • $25 hourly

    • 4.2/5
    • (79 jobs)
    I have ample experience with blockchain as a backend and front-end designer and have broad and robust involvement with the plan and improvement of big business and fin-tech frameworks. I've rich experience with DeFi lending protocols that power many of today’s yield farming ventures and are considered a relatively safe and tested way to make extra income on crypto-assets. My experience includes crypto exchanges, Dapps, Solidity & Ethereum, as well. API : inrura.io, binance.com,poloniex.com, bitfinex.com,coinbase.com, kraken.com, cex.io, coinmarketcap.com, uniswap.org, aave.com The crypto exchanges, blockchain forks, tokens creation (ERC-20, ERC-721 NFT BSC), Forking, intelligent contracts, DeFi and Ethereum mass payment tools with low gas consumption, NFT Platform , Defi/dapp Development. Have also worked on FLOW/ WAX Blockchain network and created various NFT platforms which include decentralisation network setup, smart chain. - NFT marketplace Development - Crypto wallet development - Defi/Dapp Development, Smart contract, Ethereum ERC721, ERC1155 - Cryptocurrencies API: all kinds of BCT and ETH, LTH ... - Bitcoin-QT - Wallets API: Trezor, Ledger Nano S (ETH) ... - Exchanges: Cexio, BitMex, Bittrex ... - Integrated with BSC , Ethereum and other network setup - DeFi Consulting (swaps, liquidity pools, borrowing and lending, yield farming, impermanent loss, governance tokens) - AMM DEXs (Liquidity, PancakeSwap, Uniswap, Curve, Balancer, SushiSwap, etc) - NFTs (ERC-721, ERC-1155, Flow, BSC, Polygon, Rarible, Opensea, Nifty, etc) - SSI and identity solutions, attestation and verification - Exchanges, mining - Marketplaces and ecosystems - Token standards (ERC, BEP) The segment have worked and developed 1) Worked with Mobile app development where integrate with different Blockchain Network 2) Integrated with BSC , Ethereum and other network setup 3) Wallet creation and crypto coin Management 4) NFT management on mobile app 5) Blockchain transaction management 6) Fin-tech Management and trading apps - DeFi Consulting (swaps, liquidity pools, borrowing and lending, yield farming, impermanent loss, governance tokens) - AMM DEXs (Liquidity, PancakeSwap, Uniswap, Curve, Balancer, SushiSwap, etc) - NFTs (ERC-721, ERC-1155, Flow, BSC, Polygon, Rarible, Opensea, Nifty, etc) - SSI and identity solutions, attestation and verification - Exchanges, mining - Marketplaces and ecosystems - Token standards (ERC, BEP) My Blockchain Skills include: ====================== - Smart Contract Development - Smart Contract Audit, - ICO and Token Implementation, - ERC20 and ERC721 Token Standards, - Smart Contract Consulting, - General Smart Contract Implementation, - Consulting in the area of Ethereum Blockchain, - Project and Product Management. I have a broad skill set ranging from full-stack development and distributed computing to blockchain technologies with extensive experience in Java and Node.js ecosystem. TECH STACK : Language: MEAN | MERN | Solidity | Python | Golang | Javascript | Php | Go Blockchain: Web3, Solidity, Infura, Truffle, BTC, ETH, Hyperleadger Wallets & Clients MEW, Geth, Parity, Mist, Metamask, Ganache Hands-on experience in Java/C++/Node/Golang. Application development and systems implementation. Blockchain research, understanding and solution development. Experience in NodeJS, GIT repositories, open-source tools & Technologies. Excellent understanding of Blockchain technology, cryptocurrencies (BTC, ETH, TRON, EOS & others), various consensus protocols. Experience in development on one of the Blockchain platforms like Hyperledger, Ethereum, R3 Corda, Ripple, Bluemix, Rubix. Experienced in the development of applications using distributed applications framework like Meteor, Multichain, etc. Basic understanding of cryptography, symmetric/asymmetric (public/private key), hash functions, encryption/signatures. Area of Expert : P2P Trading [LBC Concept] P2P Lending Centralized Trading & Exchange DEX -ETH & EOS Protocol DAPP Development DAPP Games Development [TRON, EOS, ETH Network] Tokenization Platform development ICO/IEO/STO End to End development Whitepaper Consultation Cryptocurrency Development IPFS Application development
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Crypto Wallet Development
    DApps
    DevOps
    React Native
    iOS
    web3.js
    Blockchain
    Smart Contract
    Blockchain Platform
    Solidity
    DApp Development
    Cryptocurrency
    Blockchain Architecture
    Metaverse
  • $60 hourly

    • 5.0/5
    • (54 jobs)
    Hello , I'm a Doctor specialized in Semantic web Technologies(XML,RDF,Ontology,...),.  I have experience with : - Algorithms and programming ( Web, Desktop & utilities ): with good experience with many programming languages: R, Java, JEE (JSP,Servlet,JSF,Primfaces,Richfaces), Javascript, Python, ... - Certificate of Specialization in Data Science and Big Data Analytics: statistics, data mining and machine learning algorithms. ( classification, clustering, prediction, & regression) - Web Scraping: Data Extraction from web pages. -Semantic Web Technologies: JENA Framework,OWL API, SPARQL,NEO4J,Database to Ontology Construction (D2R, R2O, Relational.OWL,Triplify,...). - Servers & Networks administration : VPS management, service configuration(dns,web, ..), Database management (SQL & NoSQL), Web hosting,... feel free to contact me. I always provide support after the contract ends! Regards.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Neo4j
    NodeJS Framework
    MongoDB
    JavaScript
    Knowledge Representation
    Data Analysis
    Big Data
    SPARQL
    RDF
    Graph Database
    OWL-S
    Knowledge Graph
    Ontology
    Machine Learning
    Natural Language Processing
  • $60 hourly

    • 4.5/5
    • (32 jobs)
    I have more than 15 years experience in software development including design, coding, refactoring and documentation. Strong analytical and problem solving skills. Fluent in OOP, design patterns, functional/reactive programming, full stack web programming, microservices, MVC, GUI frameworks, databases, web sites, blockchain and cryptocurrency technologies. Proficiency with: Java, J2EE, Spring, Spring Boot, JSP, JavaScript, .Net, C#, JQuery, React JS, Vue.js, Node.js, Express, HTML5, C/C++, PHP, Python/Flask, Rust, SQL, Amazon Web Services - VPC, EC2, ECS, ALB/NLB, RDS, IAM, S3, SQS, SNS, SES, Alexa, LEX, CDK, DynamoDB, Cloud Formation, Terraform, Lambda, API Gateway, Cognito; KNIME, Wordpress plugins, Google Cloud Services, DigitalOcean, social integration - Facebook, Twitter, Google, Dream Factory, Ansible, Docker, Apache, GlassFish, Tomcat, Nginx, Ethereum, Web3.js, MySQL, PostgreSQL, SQL Lite, SQL Server, Oracle, Neo4j, Eclipse, Visual Studio, NetBeans, Git, Bash, Linux, Windows.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Rust
    .NET Framework
    RESTful API
    Spring Framework
    React
    Amazon Web Services
    Node.js
    Python
    PHP
    C++
    Java
    JavaScript
  • $50 hourly

    • 4.4/5
    • (133 jobs)
    I am an advocate of clean coding, my favorite philosophy is Boy Scout rule "Always leave the Code cleaner than you found it". During free time, I like to spend time contributing to opensource, I already contributed to opensource projects like FlowiseAi, Jhipster Generator, Mongock and Bitnami Redis. I like to deep dive into computer science concepts. I am not the type of programmer who is contented to just copy-paste code from the internet. I prefer to analyze code to understand why it works the way it does. I believe in the saying, "Low-level programming is good for the programmer's soul". Skills and Technologies: • Languages: Proficient in Java, Node.js, Angular, Groovy, and Kotlin. Always updated with the latest trends and best practices. • Clean Architecture: A strong advocate of clean and efficient design, ensuring each project's robustness and scalability. • Front-End Development: Expertise in Angular, Vue.js, Nuxt, Tailwind, Bootstrap, crafting responsive and intuitive user interfaces. • Back-End Development: Skilled in Java, Node.js, and Groovy to develop server-side applications that are as resilient as they are expandable. • Cloud Computing: A solid track record with Amazon Web Services (AWS), designing and implementing scalable cloud solutions.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Generative AI
    LangChain
    Spring Boot
    Vue.js
    JHipster
    AWS Server Migration
    Docker
    Spring Framework
    Node.js
    TypeScript
    Angular
    Amazon Web Services
    Java
    MongoDB
    Kotlin
  • $99 hourly

    • 5.0/5
    • (24 jobs)
    Hello, my name is Yurii, I am the Full Stack developer with DevOps skills. I am developing web applications using Java since 2010 and been working in industries like IoT, eCommerce,Entertainment, Property Management, Enterprise Mobile Management and FinTech. By this time I was a member of large teams of 50+ people, small teams and was working by myself on some projects. Last 2 years I've been working at Amazon heavily working with application design and infrastructure setup and automation. Here are my main coding skills that might be useful for your project: - Java/Kotlin - Angular - Spring Framework - MySQL / PostgreSQL - MongoDB - AWS I am proficient in a lot more technologies and tools, we can have a call and chat to understand what your requirements are and how we can achieve your goals. I always strive for the best and my clients are always happy with the result as you might see from my job history. Would be happy to jump on a call any time to discuss the details with you. Regards, Yurii
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Angular 5
    Amazon EC2
    Elasticsearch
    Spring Framework
    Kotlin
    SQL
    Java
    Spring Security
    Hibernate
  • $20 hourly

    • 4.8/5
    • (345 jobs)
    🛒 𝗖𝘂𝘀𝘁𝗼𝗺 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗦𝘁𝗼𝗿𝗲 𝗦𝗲𝘁𝘂𝗽 | 🎨 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗧𝗵𝗲𝗺𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗗𝗲𝘀𝗶𝗴𝗻 | 🔗 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗔𝗣𝗜 & 𝗔𝗽𝗽 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 | 📈 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻 𝗥𝗮𝘁𝗲 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 🔝 𝗨𝗽𝘄𝗼𝗿𝗸 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 𝗔𝘂𝘁𝗵𝗼𝗿𝗶𝘀𝗲𝗱 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝗼𝗿 (100% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀) 👨‍💻 10+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝗼𝗻 𝗵𝗶𝗴𝗵-𝗱𝗲𝗺𝗮𝗻𝗱 𝗲𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 𝗹𝗶𝗸𝗲 𝗦𝗵𝗼𝗽𝗶𝗳𝘆, 𝗕𝗶𝗴𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲, 𝗮𝗻𝗱 𝗪𝗼𝗼𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲. 💼 27,000+ 𝗛𝗼𝘂𝗿𝘀 𝗼𝗳 𝗪𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 $500,000+ 𝗧𝗼𝘁𝗮𝗹 𝗘𝗮𝗿𝗻𝗶𝗻𝗴𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝗮 𝘄𝗶𝗱𝗲 𝗿𝗮𝗻𝗴𝗲 𝗼𝗳 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀. ✨ 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? ✅ Certified Top Rated Plus contractor on Upwork with a 100% Job Success Rate. ✅ 27,000+ Hours of Work completed, maintaining a consistent 5-star Rating on most of my projects. ✅ Specialized in Shopify Setup, Custom Development, Theme Design, API Integrations, and Optimization to enhance store performance and increase conversions. ✅ Excellent Communication Skills (both written & verbal) to ensure smooth collaboration and project management. ✅ Fully dedicated and available to work 40+ hours per week, ensuring timely delivery and quality execution. 💻 𝗠𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝘀: • Shopify Themes & Custom Design 🎨 • Shopify App Development & API Integrations 🔗 • Store Setup & Configuration 🛠️ • Conversion Rate Optimization 📈 • Payment Gateway Integration 💳 • Mobile-Friendly Responsive Design 📱 • Bug Fixes & Performance Optimization ⚙️ 📅 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘀𝗰𝗮𝗹𝗲 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝘁𝗮𝗸𝗲 𝘆𝗼𝘂𝗿 𝗲𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝘀𝘁𝗼𝗿𝗲 𝘁𝗼 𝘁𝗵𝗲 𝗻𝗲𝘅𝘁 𝗹𝗲𝘃𝗲𝗹? 𝗟𝗲𝘁'𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁 𝗮𝗻𝗱 𝗴𝗲𝘁 𝘀𝘁𝗮𝗿𝘁𝗲𝗱!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    SEO Keyword Research
    Search Engine Optimization
    Shopify Apps
    PSD to HTML
    API Development
    Mailchimp
    Klaviyo
    AJAX
    Webflow
    Shopify Plus
    Shopify Templates
    BigCommerce
    JavaScript
    Shopify
    PHP
  • $40 hourly

    • 4.7/5
    • (463 jobs)
    One of the Top- rated developers on Upwork with a “𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝐏𝐋𝐔𝐒” badge and 99+ job success rate. I have completed 𝟒𝟎𝟎+ 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 over the last 8 years, which include Salesforce and HubSpot consultation, development, customization, Integration and complete implementation to small bug-fixing jobs. The project length does not matter to me, 𝐌𝐲 𝐦𝐚𝐢𝐧 𝐦𝐨𝐭𝐭𝐨 𝐢𝐬 𝐭𝐨 𝐡𝐞𝐥𝐩 𝐦𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐚𝐜𝐜𝐨𝐦𝐩𝐥𝐢𝐬𝐡 𝐭𝐡𝐞𝐢𝐫 𝐠𝐨𝐚𝐥𝐬. So, I am ready to take care of your project. Over the last 8+ years, I have implemented every aspect of Salesforce and HubSpot – 𝐒𝐚𝐥𝐞𝐬 𝐂𝐥𝐨𝐮𝐝, 𝐌𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐂𝐥𝐨𝐮𝐝, 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 𝐂𝐥𝐨𝐮𝐝, 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐭𝐲 𝐂𝐥𝐨𝐮𝐝, 𝐏𝐚𝐫𝐝𝐨𝐭, 𝐂𝐮𝐬𝐭𝐨𝐦 𝐈𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧, Third-party Integration, Data Migration, Customer Portals, Force.com Sites, Salesforce Lightning and AppExchange App Development. I possess extensive expertise in various aspects of HubSpot, including 𝐒𝐚𝐥𝐞𝐬 𝐇𝐮𝐛, 𝐌𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐇𝐮𝐛, 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 𝐇𝐮𝐛, 𝐚𝐬 𝐰𝐞𝐥𝐥 𝐚𝐬 𝐇𝐮𝐛𝐒𝐩𝐨𝐭 𝐂𝐌𝐒. My skills encompass Web Designing, Email Template Designing, KPI Setup, Third-party App Integration, and Data Migration. I have broad experience with 𝐆𝐨𝐇𝐢𝐠𝐡𝐋𝐞𝐯𝐞𝐥 and its wide array of features. My expertise includes setting up and optimizing 𝐦𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐂𝐑𝐌 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭, 𝐚𝐧𝐝 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞 𝐭𝐫𝐚𝐜𝐤𝐢𝐧𝐠 to enhance client relationships and streamline workflows. I am proficient in building 𝐜𝐮𝐬𝐭𝐨𝐦 𝐬𝐚𝐥𝐞𝐬 𝐟𝐮𝐧𝐧𝐞𝐥𝐬, 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐧𝐠 𝐞𝐦𝐚𝐢𝐥, 𝐒𝐌𝐒 𝐜𝐚𝐦𝐩𝐚𝐢𝐠𝐧𝐬, and 𝐝𝐞𝐬𝐢𝐠𝐧𝐢𝐧𝐠 𝐥𝐚𝐧𝐝𝐢𝐧𝐠 𝐩𝐚𝐠𝐞𝐬 tailored to specific business needs. Additionally, I excel in utilizing 𝐫𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐚𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 tools to measure performance and drive informed decision-making. 𝐌𝐲 𝐒𝐤𝐢𝐥𝐥𝐬 𝐚𝐧𝐝 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧𝐜𝐥𝐮𝐝𝐞: • Proficient in comprehending high-level project specifications and strategizing project implementation approaches. • Customization of standard logic and pages. • Set up workflow and approval processes. • Configure automation & Analytics • Integrations with 3rd-party services • Expert in data migration and management • Specialization in email template and landing page designing • Rich knowledge of Apex triggers and controllers. • Strong command of Lightning Web & Aura Components • Communities and Force.com site development with custom login forms and design. • Excellent in communication. • Expert in setting up data security and developing reports to visualize data on the dashboard. • Expert in CTI, Zapier, Docusign, Mailchimp, Quickbooks, and Stripe integration Independently, I have handled numerous projects from these varied domains for clients based out of the American, European, Asian, Australian and African regions. I have extensive experience with various multinational corporations. Delivering on-time quality products is the strength I value the most. 𝐑𝐞𝐦𝐞𝐦𝐛𝐞𝐫: 𝐖𝐡𝐚𝐭 𝐈 𝐩𝐫𝐨𝐦𝐢𝐬𝐞...𝐈 𝐃𝐞𝐥𝐢𝐯𝐞𝐫.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Automation
    Salesforce
    Salesforce App Development
    API
    CRM Development
    Salesforce Marketing GPT
    Salesforce Einstein
    Salesforce CPQ
    Pardot
    Salesforce Service Cloud
    Salesforce Marketing Cloud
    Salesforce Sales Cloud
    Apex
    Salesforce Lightning
  • $37 hourly

    • 5.0/5
    • (6 jobs)
    Hi everyone! I am an Oracle Certified full-stack Java developer with huge experience writing secure code. I have been working on banking software for one of our local banks in Ukraine for more than 9 years. And it’s not a single experience I have, also I have worked on eCommerce projects, and participated in the development of hiring platforms, and tools for the CA Gen environment. My main goal is to create long-term relationships with my clients and build qualitative and reliable applications. I like to learn new technologies and move on with the latest trends in IT industry. I am an easy-talk-to person and think that communication is important in the development field. Feel free to message me, I will be glad to answer all your questions! These are my key skills: Backend: Java 6+, JavaEE, JavaSE Spring (Spring boot, Spring JPA, Spring data, Spring security and other Spring modules) Hibernate SQL DBs (MySQL, Oracle, PostgreSQL, SQLite) Non SQL DBs (Redis, Mongo) Elastic (full-text search and complicated full-text search) Amazon S3, AWS Thymeleaf Jasper Report jBOSS JBPM JUnit Frontend: ZK Ajax JSP, PrimeFaces HTML, XML Groovy Angular React Others JavaFX Git, SVN Docker SDK Eclipse/IntelliJ Idea Have a nice day!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    ZK Framework
    J2EE
    WildFly
    Hibernate
    JasperReports
    Apache Groovy
    Spring Framework
    Java
    PrimeFaces
  • $80 hourly

    • 5.0/5
    • (8 jobs)
    Specialist in ontology engineering and semantic web. OWL, RDF, RDFS, SPARQL, SWRL, SWQRL, Java, python, PostgresQL, MySQL, and graphical databases like MogoDB, ArangoDB and Neo4J. SCRUM (SFC) certified.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Knowledge Representation
    Natural Language Processing
    SPARQL
    Ontology
    OWL
    CogCompNLP
    MySQL
    Semantic UI
  • $55 hourly

    • 4.9/5
    • (21 jobs)
    I am a seasoned software developer with 8 years of hands-on experience specializing in Java development. My expertise lies in designing and implementing robust software solutions, particularly in the realm of microservices architecture, Spring Boot, and Kubernetes. **Technical Skills:** 1. Proficient in Java, Spring Boot, and Kubernetes 2. Extensive experience in building microservices architecture 3. Strong understanding of RESTful API design and development 4. Familiarity with containerization and container orchestration using Docker and Kubernetes 5. Proficiency in Agile development methodologies **Core Technologies:** 1. Java Core 2. Spring (including Spring Boot) 3. Hibernate, JPA 4. SQL (PostgreSQL, MySQL) 5. Microservices 6. Unit and Integration Testing (JUnit, Mockito, Testcontainers, Spring Boot tests) 7. Cloud Platforms: AWS, GCP 8. Kubernetes 9. IA integration ( openAI, Gemini etc) Throughout my career, I have successfully leveraged these technical skills to develop scalable and efficient software solutions, meeting the diverse needs of various projects. My hands-on experience with core technologies and dedication to staying updated with the latest advancements in the field make me a valuable asset to any development team.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    ChatGPT
    OAuth
    Hibernate
    Microservice
    Kubernetes
    Java
    Git
    Spring Boot
    Docker
    API Integration
  • $50 hourly

    • 5.0/5
    • (40 jobs)
    My passion is making ideas come to life, be it working solo, as part of a team or leading a team of fellow developers. Throughout my 5 years of development experience, I worked everywhere from startups to big companies, building products from the ground up or implementing new features. Also relevant to my set of skills is that - previously to becoming a developer - I worked as product manager for some of the biggest tech companies in the world, which still helps me to have a more holistic view of the whole work that goes into making a successful product. My go-to technologies are React and Node.js, and I have completed a wide range of projects using them. Those are not the only two libraries/frameworks I'm familiar with though, and I'm always happy to discuss my client's needs and find the best solutions for them. I consider myself creative and hardworking, as my stats show. If you liked my profile so far, drop me a message and we'll discuss how I can be useful to your project.
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Mobile App Development
    React Native
    Heroku
    API
    Dashboard
    Custom Ecommerce Platform Development
    API Development
    Bootstrap
    Ubuntu
    Node.js
    ExpressJS
    MongoDB
    API Integration
    JavaScript
    React
  • $28 hourly

    • 4.5/5
    • (30 jobs)
    I am a Senior Java Developer with experience since 2005. I have developed various Java projects in many industries. I'm also good with testing and quality assurance. Since 2012 I have worked with clients from Australia, Singapore, USA, Netherlands, Germany, Hongkong, and Greece. DETAILS: Language: Java Framework: Spring Framework (Spring Boot, Spring MVC, Spring-Security, Spring-WS, etc), Quarkus, Eclipse Vert.x, Play Framework, JHipster Technologies & libraries: Hibernate/JPA, Web-Services (JAX-WS / SOAP, JAX-RS / REST, XML-RPC), Apache CXF, Jersey, SMPP, Apache Mina, Google Maps API (JS & Android), JSOUP, Mondrian/OLAP/OLAP4J, Apache Camel, Microservice Architecture, CloudSim, JWT (JSON Web Token), Apache Kafka Application Server: Tomcat, Jetty, Wildfly IDE: IntelliJ IDEA, Eclipse, Netbeans Database: MySQL, Oracle, PostgreSQL, MS SQL Server NoSQL DB: MongoDB Cache / In-memory software: Redis, Infinispan Payment processor: Braintree, Stripe, TokenEx (SecureNet, Payeezy, Worldpay US, Vantiv, MercuryPay) Front End: JSP, Thymeleaf, Velocity, HTML, CSS, JQuery, Bootstrap, AngularJS (1.x), Angular 2+ (2 - 8), Highcharts, Ajax, JSON Build Tools: Maven, Gradle, Ant, SBT Mobile Notification: Google Cloud Messaging (GCM), Firebase Cloud Messaging (FCM), Apple Push Notification service (APNs) Test Framework: JUnit, TestNG, SonarQube Reporting Tools: JasperReports Continuous Integration: Jenkins Collaboration Tools: JIRA, Asana, Pivotal Tracker, GitHub, Bitbucket, $lack Social Media / OAuth Integration: Facebook, Google Authentication Server: Keycloak Specification Documentation: Swagger / OpenAPI Container: Docker OS: Linux (Ubuntu), Windows What I'm good for: - Software/Back-End development - Software design/architecture/solution - Web application development - System/business analyst - Database design/architecture - Software testing and quality assurance What I have done since 2012: - Develop back-end server (REST web service) and Android front-end (Android SDK) for Android application from scratch. (2012) - Develop a dashboard application using Mondrian/OLAP + Highcharts JS from scratch. (2014) - Develop MobilePayment system that connects to payment processors (Braintree, Stripe, TokenEx, Vantiv, Worldpay, etc) and administration page from scratch using Spring, Hibernate, REST, Apache CXF, JQuery, Bootstrap, etc. (2014) - Develop a GiftCard system, both REST services and administration page from scratch using Spring, Hibernate, REST, Apache CXF, JQuery, Bootstrap, etc. (2015) - Implement the USSD menu with Facebook login using Spring, Hibernate, REST, Apache CXF. (2015) - Develop push notification (Apple APNS & Android GCM) application using Apache Camel, Spring Boot, multi-threading, batch processing. (2016 - 2018) - Develop a website using WildFly, REST, Hibernate, Angular JS. (2016) - Website maintenance using Play Framework, Angular JS, Bootstrap. (2017) - Develop and maintenance insurance-related websites, communicating with SOAP and REST APIs from various Insurance providers. (2017 - 2019) - Develop various REST and SOAP API clients and servers using Spring, Spring-Boot, JAX-WS, JAX-RS, Apache Camel, etc. (2017 - 2018) - Develop a website using Play Framework, Hibernate, Angular JS, Bootstrap, etc. The website connects to various third-party APIs. (2018) March 2024 update: I'm available to hire up to 30 hours/week. I am looking forward to working with you! Thanks!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Spring Security
    Hibernate
    Play Framework
    JasperReports
    Vert.x
    Apache Kafka
    Apache Camel
    Spring Boot
    Google Maps API
    RESTful Architecture
    AngularJS
    Spring Framework
    Java
    Redis
    MongoDB
  • $40 hourly

    • 5.0/5
    • (27 jobs)
    I am a professional VBA Developer, passionate about ridding your world (your office) from repetitive tasks! I have vast experience in handling office optimization projects for various firms and departments. My expertise starts with processes re engineering and then using Vba macros in excel to generate reports, store and analyse data and automate processes to reduce or eliminate time consuming and error prone manual work. (import export data, generate send save and print files/reports etc) I hope that this platform will give me the chance to eventually work full time with a desired degree of flexibility, with challenging projects and most of all with interesting people from all over the world!
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Derivatives Trading
    Data Analysis
    Financial Reporting
    Visual Basic
    SQL
    Microsoft Excel
    Google Sheets
  • $15 hourly

    • 4.6/5
    • (17 jobs)
    I am a senior Java developer with excellent knowledge of algorithm development and good sense of design. When designing a solution my priority is not just functionality, but also performance, user friendly UI and appealing graphics. Before finishing a project I always make sure to run all possible tests so you won’t be encountering any errors in future. I am full stack Java developer having extensive knowledge of developing enterprise solutions, such as POS/CRM/ERP systems and other business management and financial applications. In addition I also have a lot of experience creating web platforms for mass user bases, such as market research tools, social networks, education portals and more. Looking forward to hear back. Appreciatively Ajeet
    vsuc_fltilesrefresh_TrophyIcon Java EE
    Hibernate
    MySQL Programming
    CSS 3
    Spring Framework
    Java
    HTML5
    AngularJS
    Jakarta Server Pages
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