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Clients rate Spring Framework specialists
Rating is 4.8 out of 5.
4.8/5
based on 118 client reviews
  • $20 hourly
    • 5.0/5
    • (24 jobs)
    Oracle Certified Professional Java Developer, Spring Boot developer, Full stack developer & solutions provider. Are you looking for all-inclusive, reliable microservices and responsive web app development? Or a full-stack developer who fully understands and fulfills your unique requirements with custom solutions? Do you have time or other constraints that prevent you from hiring full-time, in-house specialists for your project? Don’t worry! You’ve found the right person. I am Salman, a Full-Stack Microservices and Responsive Web developer with over 12 years of developing, implementing, and maintaining high-quality & customized backend and web-based software solutions across various industry sectors. I’m always willing to go above and beyond and make myself available, to answer queries, provide quick fixes or status updates, and meet tight deadlines. I have experience with: ✅ Java, Java Core, Java EE ✅ Spring Boot, Spring MVC ✅ Spring Boot Data, Spring JPA Data ✅ Spring Security ✅ Apache Struts ✅ Microservices ✅ RestAPI / Restful API Development ✅ OpenAPI/Swagger, Postman ✅ API Integration ✅ JPA, Hibernate ORM ✅ Java Concurrency ✅ Relational Database (RDBMS): MySQL, MSSQL Server, PostgreSQL, IBM DB2 ✅NoSQL Databases: MongoDB, AWS Dynamo DB ✅ Container Orchestration: Kubernetes, Helm Chart ✅ DevOps Skills: CI/CD, Kubernetes, Helm charts, Docker, Github Actions, GitHub, Ansible ✅Cloud Experience: GCP, AWS, AWS SDK ✅ JSP / Java Server Pages ✅ JSF / Java Server Faces / Jakarta Server Faces ✅ Thymleaf ✅ React JS, Bootstrap, Material CSS, HTML, CSS, Javascript, JQuery 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Quality-Oriented: I focus on providing VALUE to all of my Clients and Earning their TRUST. Delivering with quality is the key to gaining trust, and that's where I put my core focus. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "WOW." ✅ Adaptive to changes: During Software Development Lifecycle, it is highly likely some changes might be needed. I understand this and open to any changes. The end goal is to make my client achieve his target, and the objective is to make his/her business more profitable. ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my Clients. ✅ Respect: Self-respect is everyone's right. I belong and thrive in a work culture where everyone's self-respect is of utmost importance. Maintaining relations with my clients to boost their self-respect is one of the core offerings that I can offer here. Have any questions? Want to discuss your project? Or do you want to get advice? Drop me a message, and we will have a quick call to understand your requirements so that to help you 100% according to your desires :)
    Featured Skill Spring Framework
    Core Java
    Spring Security
    RESTful API
    Java
    Spring Data JDBC Extensions
    Web Development
    Kubernetes
    Spring Data
    Spring Boot
    React
    Microservice
    RESTful Architecture
    Hibernate
    Spring MVC
  • $17 hourly
    • 4.7/5
    • (9 jobs)
    I am a senior Java developer having more than 5 years of professional experience in software development. A self-starter, and a proven team player, and always accepted the challenges that allow me to learn new skills while utilizing my hard-earned skills - Experienced in various areas in the design, development, and maintenance of software applications - Well-versed in developing applications based on SOA (SOAP/Rest). - Have experience in creating applications from scratch. - Have good knowledge in Java7/8/11/17, MySQL, Oracle ,Spring Frameworks(Boot, Security, Data JPA, Spring Web, etc.) and docker. - In addition to working independently on projects, I am well able to create value with a team. - Experienced in writing test automation and load test scripts. - Good problem-solving skills My specialization: ✅ Java, JavaEE, Java Web ✅ Spring Boot, Spring MVC, Spring Security, Spring integration, Spring MicroServices ✅ ORM, Spring Data/JPA/Hibernate/ JDBC, Spring sessions ✅ Databases: MySQL, Postgres Oracle Pl/SQL, MongoDB, Mongoose , MMsql Server and cassandra ✅ REST APIs integration, design, and development ✅ Soap Apis ✅ Linux, Dockerizatoin ✅ Rabbit Mq, KAFKA, and its integrations ✅ Front end development: Html, CSS, JavaScript, thyme leaf 𝙈𝙮 𝘾𝙤𝙧𝙚 𝙅𝙖𝙫𝙖/𝙎𝙥𝙧𝙞𝙣𝙜 𝘽𝙤𝙤𝙩 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚: 💥 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Spring boot, Hibernate, Web Services, JPA, JMX Client, Spring MVC, Spring Rest, Spring data, Spring Gateway, etc 💥 𝐃𝐞𝐯𝐎𝐩𝐬: Docker 💥 𝐃𝐚𝐭𝐚𝐁𝐚𝐬𝐞: SQL Server, MySQL, Oracle, Postgresql, Mongo Db & Cassandra 💥 𝐎𝐭𝐡𝐞𝐫 𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: SVN, GIT, PostMan, JMeter,Swagger 💥 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐌𝐨𝐝𝐮𝐥𝐞𝐬: Spring Security,JWT 💥 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: JUnit, Mockito 💥 Payment Gateways: Master Card 💥 Third-party Integrations: SendGrid API, TextLocal API, WhatsApp Business API
    Featured Skill Spring Framework
    Thymeleaf
    Spring Boot
    MySQL
    RESTful API
    Java
    Spring Security
    RabbitMQ
    Java Persistence API
    Microservice
    Hibernate
    JUnit
    Spring MVC
    Docker
    JavaScript
  • $25 hourly
    • 5.0/5
    • (5 jobs)
    Greetings! 𝐈'𝐦 𝐅𝐚𝐥𝐚𝐡, a passionate 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with over 𝟕 𝐲𝐞𝐚𝐫𝐬 of experience delivering innovative and scalable solutions. My expertise spans front-end, back-end, and cloud technologies, ensuring seamless integration and performance for your projects. 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞? Backend Mastery: Proficient in Java, Spring Boot, Hibernate, and microservices architecture. Front-end Expertise: Skilled in Vue.js, Angular, and React for dynamic and responsive interfaces. Cloud Proficiency: Experienced with AWS, Azure, and cloud-native solutions for robust deployments. API Development: Specialize in RESTful APIs, message queues (JMS), and third-party integrations. Database Management: Proficient in PostgreSQL, MySQL, and schema modeling (YAML, JSON, XML/XSD). CI/CD Workflow: Expertise in Bitbucket, GitLab, Jenkins, and Agile methodologies. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈’𝐯𝐞 𝐒𝐞𝐫𝐯𝐞𝐝 Telecom: Built resilient network solutions. E-commerce: Developed end-to-end platforms. Finance: Engineered secure digital investment tools. Insurance: Delivered modular systems for claims and policies. 𝐖𝐡𝐚𝐭 𝐂𝐚𝐧 𝐈 𝐃𝐨 𝐟𝐨𝐫 𝐘𝐨𝐮? End-to-End Development: From concept to launch, I handle full-cycle development. Modernization: Revamp legacy systems for improved performance and scalability. API Integration: Connect your systems to maximize efficiency. Cloud Migration: Transition to the cloud for cost-effective scalability. Custom Applications: Tailor-made solutions to fit your unique business needs. 𝐊𝐞𝐲 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬 Led a team of 5 developers in delivering an insurance app using Spring Boot and RabbitMQ. Streamlined chat functionality for a dating platform, enhancing user engagement. Automated daily notifications for a large-scale platform, improving user retention. 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 𝐓𝐨𝐠𝐞𝐭𝐡𝐞𝐫! If you're looking for a reliable, detail-oriented, and collaborative developer, I'm your go-to expert. I pride myself on delivering clean code, timely delivery, and outstanding communication. 💬 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐭𝐨𝐝𝐚𝐲, 𝐚𝐧𝐝 𝐥𝐞𝐭’𝐬 𝐭𝐮𝐫𝐧 𝐲𝐨𝐮𝐫 𝐯𝐢𝐬𝐢𝐨𝐧 𝐢𝐧𝐭𝐨 𝐫𝐞𝐚𝐥𝐢𝐭𝐲!
    Featured Skill Spring Framework
    Vue.js
    React
    JavaScript
    Python
    Django
    AWS Development
    Spring Cloud
    Docker
    Java
    RESTful API
    Java Persistence API
    Spring Boot
    Hibernate
  • $20 hourly
    • 5.0/5
    • (3 jobs)
    𝐀𝐬 𝐚 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, I specialize in building responsive websites that offer the best user experiences across all devices. With expertise in both front-end and back-end development, I have a deep understanding of modern technologies like Java, React, Node.js, and database management systems. 𝐖𝐡𝐞𝐭𝐡𝐞𝐫 𝐲𝐨𝐮 𝐧𝐞𝐞𝐝 𝐚 𝐫𝐨𝐛𝐮𝐬𝐭 𝐞-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦, 𝐚 𝐬𝐥𝐞𝐞𝐤 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐨𝐫 𝐜𝐮𝐬𝐭𝐨𝐦 𝐀𝐏𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬, I’m committed to delivering high-quality solutions tailored to your business needs. My goal is to bring your vision to life with clean, efficient, and scalable code. Key Skills: 𝐉𝐚𝐯𝐚 & 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭: Proficient in developing RESTful APIs and microservices with Spring Boot, ensuring high-quality back-end architecture. 𝐀𝐧𝐠𝐮𝐥𝐚𝐫: Expert in creating responsive, interactive, and user-friendly front-end interfaces using Angular. 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: Skilled in integrating third-party APIs and building secure, scalable API architectures. 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: End-to-end development of web applications, focusing on performance optimization, scalability, and user experience. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭:Strong knowledge of databases (SQL, NoSQL) to ensure efficient data handling and storage solutions I have collaborated with different teams across the globe and worked as a full-time React developer and Senior full-stack developer for my clients. I feel a special passion for my profession, so I like to do things the right way and make the customer happy. I prefer to stay up to date with the whole development process from database structure and server infrastructure to mobile responsive views and analytics. Moreover, I dive deep into company business processes and I won't hesitate to suggest any ideas aimed to improve it from the development side. 𝐔𝐩𝐰𝐨𝐫𝐤 𝐂𝐥𝐢𝐞𝐧𝐭𝐬’ 𝐅𝐞𝐞𝐝𝐛𝐚𝐜𝐤: "Incredible, did everything needed exceptionally well!" Let's discuss how my development expertise can help your organization capitalize on the latest opportunities in creating dynamic and user-friendly web applications. I look forward to the conversation. Thank you,
    Featured Skill Spring Framework
    Spring Security
    Angular
    Java Persistence API
    Spring Boot
    Java
    Web Application Development
    Web API
    MongoDB
    Responsive Design
    Next.js
    React
    Node.js
    Web Development
    JavaScript
  • $15 hourly
    • 5.0/5
    • (18 jobs)
    🚀 Profile Summary: I am a passionate Software Engineer currently immersed in the world of Java Spring-Boot, Python Django, and Node.js REST frameworks. With a strong foundation in both development and deployment, I bring a wealth of hands-on experience to the table. 🛠️ Key Expertise: 1️⃣ Designing Database Structures 2️⃣ Writing Clean Code 3️⃣ Crafting Complex RESTful APIs 4️⃣ CI/CD using Jenkins 5️⃣ SLF4J Logging 6️⃣ Lombok 7️⃣ PostgreSQL 8️⃣ MongoDB 9️⃣ GitHub Version Control 🔟 VPS Deployment & GitHub Actions 💡 Additional Information: I thrive on challenges and take pride in delivering elegant solutions. My focus on clean code ensures maintainability and scalability, while my expertise in CI/CD streamlines the deployment process. With a keen eye for detail and a commitment to continuous learning, I am dedicated to driving innovation and excellence in every project I undertake. Let's collaborate and elevate your next endeavor together! 🚀
    Featured Skill Spring Framework
    Django
    Spring Boot
    Software Development
    C++
    Web Application
    Product Development
    Java
  • $35 hourly
    • 4.8/5
    • (20 jobs)
    *********I'm seeking top-tier clients only to deliver top-quality work********* Frontend Development: ✅ HTML, CSS, Bootstrap, Javascript, JQuery, Jaggery, Android, Angular Backend Development: ✅ JAVA, Spring, SpringBoot, Apache CXF SOAP Web Services, Spring REST Services Mockito, Junit, Postman, SoapUI, Apache Tomcat Serve, Solar, Jenkins, JSON, SFTP, IntelliJ IDEA, Docker, Kafka, Kubernetes, LogStash, ElasticSearch, Kibana, and Databases like Oracle, MariaDB and MySql, MongoDB BigData ✅ Kafka, Python, SQS DevOps: ✅ AWS Services (EC2, ECS, S3, Lambda, DynamoDB, RDS, Elastic Beanstalk, AWS CDK, AWS Cloudformation etc.), Serverless application development, AWS EMR ✅ Azure Services (Azure PostgressDB, ELK, Kafka) My core competency lies in complete end-to-end development and maintenance of small and large scale software development projects. I have excellent experience working with enterprise level n-tier, multi-tenant applications. ✅ Domains: Medical, Fintech, Banking, Telecom, ERP, HR and e-commerce ✅ Projects delivered/In-progress as Senior Lead ******Medical Product****** Tools and Technologies: Java, Spring Monolitic, Spring Boot Microservices, Android, Angular, NodeJS, WS02, AWS (APIM, Fargate, ECS, MongoDB, CloudWatch, AWS DevOps) 
 ******Banking Product****** Tools and Technologies: Angular, NodeJS, AWS (APIM, Fargate, ECS, PostgreSQL, Elastic Search, OracleDB, CloudWatch, AWS DevOps) 
 ******Fintech Project******
 Tools and Technologies: Java (Spring boot micro services), Azure (APIM, AKS, Kakfa, Redis, ELK, PostgreSQL) ******ERP Coupa based Project****** Tools and Technologies: Coupa, Java (Springboot microservices), Azure (APIM, Azure App Service, AKS, Apache Kafka, Redis, ELK, PostgreSQL, Magento) ✅ Projects delivered as Senior Developer • Coupa • Atlas
 • ServiceNow 
• Workday HR • Oracle Fusion
 • ERP • Branchless Banking • GRF
 • HWSW
 ******Localization PMAN****** I8SB Inov8 Product covering BLB integration of following customers • JS Bank
• Soneri Bank • Bank of Punjab • ConvoPay Still thinking? Let's just apply a cheat code here and let's just straightaway jump on a call/chat or Zoom session to discuss your requirements in a detailed way.
    Featured Skill Spring Framework
    CI/CD
    Spring Boot
    SQL
    Angular
    Web Application
    Java
    PHP
    CodeIgniter
    RESTful API
    Amazon Web Services
    API Integration
    Web Service
    JavaScript
    Database
  • $40 hourly
    • 4.6/5
    • (14 jobs)
    I’m a dedicated React Native and JavaScript developer with a strong focus on building cross-platform mobile apps and high-performing web applications using modern frameworks like React.js, Next.js, and React Native. From startups to scale-ups, I’ve helped businesses launch robust MVPs, optimize frontend performance, and create seamless user experiences across devices. 𝗖𝗼𝗿𝗲 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Frontend Frameworks: React.js, React Native, Next.js Languages: JavaScript (ES6+), TypeScript, HTML5, CSS3 Mobile Development: React Native for Android & iOS UI Libraries: Tailwind CSS, Material UI, Bootstrap State Management: Redux, Context API Testing: Jest, Cypress, React Testing Library Tools: Git, Figma, Vite, Webpack, Storybook 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 ✔ Mobile-First Mindset: I craft apps that feel native on every screen ✔ Pixel-Perfect Frontend: Figma-to-code precision, with clean component structure ✔ SEO & Performance Optimized: Core Web Vitals and Google PageSpeed scores in mind ✔ Real-Time Collaboration: Communicate clearly via Slack, Jira, Notion, and Loom ✔ End-to-End Execution: I partner with designers and backend teams to build full product workflows 𝗧𝗵𝗲 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗜 𝗗𝗲𝗹𝗶𝘃𝗲𝗿 ✅ 30+ MVPs delivered in under 2 weeks ✅ 100+ responsive websites launched ✅ 50+ mobile apps developed with React Native ✅ Consistent 95+ Lighthouse scores ✅ Up to 38% increase in user engagement & conversions 𝗟𝗲𝘁’𝘀 𝗵𝗲𝗹𝗽 𝗲𝗮𝗰𝗵 𝗼𝘁𝗵𝗲𝗿 𝗮𝗻𝗱 𝗴𝗿𝗼𝘄 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿!
    Featured Skill Spring Framework
    AWS Cloud9
    React Native
    Mobile App
    Flutter
    React
    TypeScript
    Apache Spark
    Angular
    Spring Boot
    Node.js
  • $45 hourly
    • 4.9/5
    • (4 jobs)
    Experienced Android and Spring boot Developer with 5+ years of expertise in creating native applications using Kotlin and Java. Proficient in developing software solutions for POS, CRM, ERP products with a focus on scalability and maintainability. Passionate about creating innovative and user-friendly applications. Main expertise in Java, Kotlin, android native, and Spring boot. Mostly worked in JVM stack, focusing on delivering production and deployment-ready solutions whether Android or backend app.
    Featured Skill Spring Framework
    OAuth
    Reactive Programming
    Spring Cloud
    Database
    RESTful API
    Spring Boot
    Microservice
    Kubernetes
    Docker
    GraphQL
    Android
    Firebase
    Kotlin
    Java
  • $40 hourly
    • 5.0/5
    • (4 jobs)
    I'm professional software engineer having 9+ years of working experience using different platforms and technologies to develop desktop, mobile and web applications. Technologies : Java, JEE, Spring Boots, Microservices، Webservices, Databases (MySQL, SQL Server, PostresSQL, Oracle, MongoDB), ReactJS, AngularJS, PHP, NodeJS, Shopify, Laravel, CodeIgniter, Python, Android, React Native, Flutter.
    Featured Skill Spring Framework
    Spring Cloud
    MongoDB
    PHP
    Spring MVC
    Spring Security
    Java
    Hibernate
    MySQL
    Spring Session
    React
    Spring Boot
    Spring AMQP
    AngularJS
    Spring Data
  • $35 hourly
    • 4.8/5
    • (49 jobs)
    I have over 15 years of hands on experience in designing and developing enterprise applications using technologies like Java, J2EE, Struts, JSF, Spring boot, Hibernate, Rich Faces, Angular js, Reactjs, Node js. Further I have exposure in Performance Tuning, Query Optimization, Code Profiling, Memory Leaks and Team management. I also have past experience with other integration technologies like web services(jax-ws,jax-rs), JMS (Jboss Hornet Queue, Active MQ), apache camel and Mule ESB. I have tons of experience in developing convention web applications using standard J2EE technology stack like Spring boot, Hibernate, Angular JS, JSF etc. I carry experience for cloud deployment and configuration particularly on AWS Cloud Formation and Amazon Elastic Beans Talk and Google App Engine. I have experience in billing specially opencell customization and crm implementation specially with opensource corteza crm.
    Featured Skill Spring Framework
    J2EE
    Hibernate
    Apache Struts
    PrimeFaces
    AngularJS
    Java
    Spring Security
    Apache Camel
    Jakarta Server Faces
  • $50 hourly
    • 5.0/5
    • (24 jobs)
    Experienced Web developer with Skills in PHP Laravel, React, Java and Asp.NET. I have over 10 years of experience developing web applications which involve Backend Development with above technologies then linking with the frontends developed in React, Bootstrap, Laravel's Blade using REST API and connections with the databases like MongoDB, MySQL and SQL Server. • Very Strong PHP & Laravel(Lumen API) along with Token based Authentications • Good with Frontends like Typescript, Bootstrap Responsive Design • Strong with MongoDB, Mysql and SQL server databases • Agility in adapting in any development environment. • Strong OOP and Software engineering concepts. • Very Good Knowledge of Java • Basic knowledge of Spring Framework • Excellent at application programming in Java and data structures • Have developed Software application following whole life cycle i.e. from requirement gathering to implementation phase keeping agile development practices in mind. • Very good understanding of databases and database modeling • Extensive knowledge of data structures and have implemented myself • Can Model classes from specification and very good at Project Documentation • Very good knowledge of XQuery and SQL • Very good experience of working with RSS and Media RSS • Worked with relational as well as NoSQL Databases
    Featured Skill Spring Framework
    JSON
    JavaFX
    Android App Development
    Unified Modeling Language
    Hybris
    Jakarta Server Pages
    XML
    Java
    C#
  • $35 hourly
    • 5.0/5
    • (39 jobs)
    Hello there! I'm a 𝗦𝗲𝗮𝘀𝗼𝗻𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with over 13 years of industrial experience, specializing primarily in Backend development. My core expertise lies in 𝗻𝟴𝗻, 𝗥𝗼𝗥 (𝗥𝘂𝗯𝘆 𝗼𝗻 𝗥𝗮𝗶𝗹𝘀), 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗡𝗼𝗱𝗲, and 𝗣𝗛𝗣. However, my skills extend beyond these technologies, as I'm proficient in developing Pixel-perfect Frontend solutions using Javascript frameworks such as 𝗥𝗲𝗮𝗰𝘁, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 and 𝗩𝘂𝗲. I have personally built projects from scratch, which involved writing over 500K lines of code. My Upwork Track Record speaks for itself when it comes to Web and Mobile App Development, Backend and API Development, SaaS, ERP Suites, and Microservices-based Multi-tenant solutions. I had the privilege of creating solutions for a wide range of industries, which include: 👉 Healthcare & TeleHealth Apps. 👉 Ride-hailing & Delivery Apps. 👉 Fleet Management Systems. 👉 Marketplace and E-commerce Applications. 👉 Booking/Appointment Platforms 👉 Email Marketing CRM Solutions. 👉 Product and Business Software Solutions. 𝗜'𝗺 𝘆𝗼𝘂𝗿 𝗴𝘂𝘆 𝗶𝗳 𝘆𝗼𝘂'𝗿𝗲 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 an Independent Developer who can convert your ideas into high-quality, rapid, and scalable applications or maintain/upgrade your existing applications. Thank you for your time, and I look forward to collaborating with you!
    Featured Skill Spring Framework
    Shopify
    HTML5
    RSpec
    CSS 3
    MEAN Stack Administration
    React
    Node.js
    JavaScript
    Business with 10-99 Employees
    Business with 100-999 Employees
    PHP
    Python
    SQL
    Ruby on Rails
    Laravel
  • $35 hourly
    • 5.0/5
    • (11 jobs)
    I’m a results-driven technologist with a passion for building scalable, high-performance applications that solve real-world problems. With over 10+ years of experience in Java, Spring Boot, Angular, and AWS, I specialize in crafting end-to-end solutions that drive innovation, efficiency, and business growth. Whether it’s designing cloud-native architectures, optimizing databases, or delivering pixel-perfect UIs, I bring a full-stack mindset to every project. As a Principal Software Engineer, I don’t just code—I architect systems that scale, mentor teams to excellence, and align technology with strategic business goals. ✨ What I Deliver: ✅ Full Stack Expertise: Backend: Java, Spring Boot, microservices, RESTful APIs, and event-driven architectures. Frontend: Angular, TypeScript, reactive UIs, and seamless API integrations. Databases: PostgreSQL, MySQL, MSSQL—optimized for performance and scalability. ✅ AWS Cloud Mastery: Built serverless applications with Lambda, API Gateway, and S3. Designed scalable, fault-tolerant systems using EC2, ECS, RDS, and DynamoDB. Reduced cloud costs by 30%+ through intelligent resource allocation and auto-scaling strategies. ✅ SaaS & Enterprise Solutions: Developed 15+ SaaS platforms with subscription billing, auth systems, and multi-tenant architectures. Migrated legacy monoliths to cloud-native microservices, cutting deployment failures by 90%. Engineered real-time dashboards and analytics engines for Fortune 500 clients. ✅ Leadership & Mentorship: As a Principal Engineer, I’ve led cross-functional teams to deliver projects ahead of schedule. Mentored 10+ junior developers in best practices for clean code, CI/CD, and cloud architecture. Championed agile methodologies to streamline workflows and boost team productivity by 40%. 💡 Why Clients Choose Me: I Solve Problems, Not Just Write Code: From rescuing failing systems to future-proofing architectures, I thrive on challenges that others shy away from. I Deliver Ahead of Deadlines: Clients praise my ability to ship high-quality solutions fast—without cutting corners. I’m Always Learning: Whether it’s AI integrations, edge computing, or the latest in cloud-native tech, I stay ahead of the curve to deliver cutting-edge solutions. 🚀 Let’s Build Something Extraordinary Whether you’re launching a SaaS platform, modernizing legacy systems, or scaling an enterprise application, I’m here to turn your vision into reality. Let’s create something that doesn’t just work—it wows. Hit “Invite”—your next breakthrough is a conversation away. 💻✨
    Featured Skill Spring Framework
    Web Application Development
    SaaS Development
    Angular 10
    REST API
    RESTful API
    Amazon Web Services
    MySQL
    PostgreSQL
    Microservice
    Spring Boot
    Java
  • $40 hourly
    • 4.9/5
    • (71 jobs)
    10 years of proven experience in Unity3d. I have completed 50+ projects on Upwork all with 5 star ratings.With decade of experience and having covered 100s of clients I can assist to make project better and give my input to success of project. My experience is reflected in my work as I pay extra attention to detail and Architecture. Following are my skillset: - Following Clean Code principles, Following best practices to make project more efficient. - Extensive experience in Unity 3D development, including game design, Augmented Reality/Virtual Reality applications, and interactive simulations. - Proficient in C# having knowledge of designing complex algorithms. - Native Development for iOS and Android and calling it functions in Unity.
    Featured Skill Spring Framework
    Spring Boot
    Full-Stack Development
    Angular
    iOS Development
    Web Development
    Firebase
    Mobile Development Framework
    Unity
    Native App Development
    C++
    Java
    Swift
    iOS
  • $35 hourly
    • 5.0/5
    • (1 job)
    With a strong background in data engineering, I bring a wealth of experience in SQL, ETL processes, data warehousing, and various data modeling tools to Upwork. My proficiency in these areas has allowed me to successfully design and optimize complex data pipelines, ensuring efficient data extraction, transformation, and loading. I am well-versed in cloud platforms like AWS, Google BigQuery, and Azure, and have a track record of designing robust ETL workflows. In addition, my expertise in Python and scripting languages has enabled me to develop custom data solutions, while my experience in data quality assurance and data security ensures the integrity of the data throughout its journey. I look forward to leveraging my skills and experience to deliver high-quality data solutions for Upwork clients, contributing to their data-driven success.
    Featured Skill Spring Framework
    Unity
    Game Development
    SQL Programming
    Data Analytics & Visualization Software
    Data Warehousing & ETL Software
    Data Migration
    Data Analytics
    Data Science
    Artificial Intelligence
    Machine Learning
    Database Management
    Spring Boot
    C++
    Java
    Python
  • $55 hourly
    • 4.8/5
    • (15 jobs)
    I am full stack java developer with proficiency in Spring and Angular. I have developed architecture of various SaaS based multitenant applications and lead the teams of Devs and Ops from development to deployment. I am the author of Grails Multitenant and Grails REST Awesome plugin. I am also the Contributor of various internal projects of Grails Framework as well. I work with Java 11 using Spring, Elastic Search, Jersey, Hibernate, Postresql, Mysql and ActiveMQ. I can design and develop RESTFul web-services to be consumed by various mobile and web frontends. I can proficiently handle websockets, JMS and other server sent events such as Android and iOS push notifications. I can integrate my applications with rest of the world like payment gateways (stripe, braintree, paypal), marketplaces such as (ebay, amazon, etsy) and CRMs (Zoho, Salesforce and etc.)
    Featured Skill Spring Framework
    JHipster
    Spring Data
    Apache Kafka
    Java
    RESTful API
    Spring Boot
    Hibernate
    React
    RESTful Architecture
    Grails
    Spring Security
    SaaS
    AngularJS
  • $20 hourly
    • 5.0/5
    • (1 job)
    🥇 AWS Certified Developer Associate 💼 7+ years of experience ✅ 20+ projects delivered 👨🏻‍💻 Worked with Fortune 500 companies like Walmart and CDK Global Technical Expertise:🛠 Proficient in Java, including Java 8, Java 11, Java 17. Backend development experience with Spring Boot, REST API development, application security, scalability, and proficiency in Spring Data JPA, Hibernate, Spring Cloud, and Spring Security. Mastery of Microservice architecture and Micro Frontend architecture, including Journey-based frontend UI development. Expertise in developing web applications in the Banking and Financial domain for over 5 years. Proficiency in Event-Driven architecture, CQRS (Command Query Responsibility Segregation), and SAGA patterns. Knowledge of application security best practices, including OAuth 2 implementation, JWT token-based authentication, and authorization. Experience in Test-Driven Development (TDD) and unit testing using JUnit 5 and Mockito. Familiarity with both relational and NoSQL databases, including MySQL, Oracle, PostgreSQL, MongoDB, and Amazon QLDB. Hands-on experience with AWS, including designing and implementing highly scalable and secure infrastructure plans, application deployment, and CI/CD pipelines using AWS services like CodeCommit. Proficiency in migrating on-premises applications to the AWS cloud. Expertise in DevOps practices, including CI/CD with Jenkins and GitHub Actions, containerization using Docker, terraform script development, Ansible, Container Orchestration with Kubernetes clusters and Amazon EKS (Elastic Kubernetes Service), and version control using Git. Experience in setting up monitoring and logging solutions like Prometheus, Grafana, ELK (Elasticsearch, Logstash, Kibana), or AWS CloudWatch to ensure the health and performance of applications. Understanding of distributed system concepts, including message brokers like Apache Kafka or RabbitMQ, and the implementation of distributed transactions. Expertise in optimizing application performance, including profiling, caching strategies, and database query optimization. Proficiency in modern Software Development Life Cycle (SDLC) methodologies, including Agile (SCRUM), and tools such as Jira, Confluence, and SonarQube. Mastery of Object-Oriented Programming (OOP) concepts, SOLID principles, and Data Structures & Algorithms. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀:🖥️ Java EE, Java SE, Senior Developer, Consultant, Enterprise Java, Software Engineer, Backend Development, Enterprise Applications, Java Programming, Java Development, Software Consultant Java Architect, Enterprise Solutions, Full Stack Java, Senior Consultant, Java Expert, Java SE Developer, Java EE Developer, Senior Java Developer, Java Consultant, Software Development Java Technologies, Java Frameworks, Java EE Frameworks, Java SE Frameworks, Java SE Specialist Java EE Specialist, Java Application Developer, Java Software Engineer, Java Development Specialist Java Solutions Architect, Java Solution Consultant, Java System Analyst, Java Project Manager Java Team Lead, Java Technical Lead, Java Design Patterns, Java Code Optimization Java Performance Tuning, Java Integration, Java API Development, Java Microservices Java Web Development, Java Application Design, Java Deployment, Java Testing, Java Documentation Java Best Practices, Java Debugging, Java Troubleshooting, Java Code Review, Java Version Control Java Security, Java Scalability, Java Reliability, Java Maintenance, Java Enhancement, Java Upgrades, Java Migration, Java Support I always prefer high quality over quantity and believe in excellent work outcomes. If you think along, we'll have a blast working together! Let's connect to discuss how I can help you achieve your goals!
    Featured Skill Spring Framework
    Relational Database
    Apache Maven
    NoSQL Database
    DevOps
    Docker
    Apache Kafka
    Hibernate
    RESTful API
    Microservice
    Spring Boot
    PostgreSQL
    JUnit
    Amazon Web Services
    Java
  • $30 hourly
    • 5.0/5
    • (19 jobs)
    Looking to maximize value while cutting costs? 💡 I specialize in reliable, scalable and secure systems that save you time, slash cloud bills, and deliver outstanding results. Let’s get started! 🚀 🚀 With 8+ years of experience in full-stack development, I craft scalable, secure, and performance-driven solutions. Proficient in cutting-edge technologies like Node.js, FastAPI, React.js, Java, and cloud platforms such as AWS and GCP, I deliver seamless web applications and robust backend systems. Let’s collaborate to turn your vision into reality—risk-free and results-oriented! 💡 How I can help: - Transform your ideas into reliable, scalable software with the right tech stack - Deliver cost-effective, high-quality systems that adapt to your business needs - Ensure seamless integration with 3rd-party services and future upgrades - Implement best practices for cloud efficiency, ensuring savings and growth What Sets Me Apart? - ✅ Deep Client Understanding: I dive deep into your requirements, thinking as the end-user to design highly optimized solutions that fit your needs perfectly. - ✅ Scalable & Cost-Effective Solutions: I choose the right technologies and cloud services to minimize your bills while ensuring scalability, security, and performance. I focus on using Well-Architected Framework to build reliable and efficient solutions. - ✅ 20% Faster Delivery: With years of experience, I’ve built a proven backend and frontend setup (Node/Nest/FastAPI) with core features like authorization, authentication, role-based access and much more, enabling quick implementation of your business logic and moving a head faster with well-tested practice. - ✅ End-to-End Solutions: MVP development, SaaS products, AI-based platforms, and custom integrations (Stripe, SendGrid, Twilio, and more) 💻 My Technical Skills: Front-End: - JavaScript, Angular, - React, Next.js, - Vue.js 🌐 Back-End: - Node.js, NestJS, TypeScript ⚙️ - Python, Django, FastAPI 🐍 - Java, Spring Boot 🖥️ Cloud/DevOps: - AWS, GCP, Azure ☁️ - Kubernetes, Docker, CI/CD 🔧 - Linux, Nginx, Shell scripting 🖥️ Databases: - SQL, MySQL, MongoDB, PostgreSQL, Redis, Elasticsearch 📊 Mobile Development: - React-Native 📱 💡 How I Can Help Your Business: - 🚀 Startup Consulting: From idea to launch— I’ll guide your journey. - 🎨 Wireframing & Design: Visualize your product's layout and functionality. - 📈 Product Management: Define requirements, manage development, and ensure quality. - 🗺️ Product Roadmaps: Develop strategic plans for your product's growth. - 🛠️ Full-Service Development: I handle design, product management, app development, and launch. - 💬 Customer Acquisition: Develop strategies to attract, convert, and retain customers. ⚠️ Choosing the wrong developer can lead to slow systems, hidden costs, and missed deadlines. Don’t take that risk— let’s work together to create a solution that grows your business and saves you money in the long run. 📩 Let’s get started today! Click on ‘Invite’ to discuss how we can bring your vision to life and avoid costly mistakes! 💬
    Featured Skill Spring Framework
    Spring Boot
    MySQL
    FastAPI
    Python
    Google Cloud Platform
    AWS Lambda
    Amazon Web Services
    TypeScript
    Next.js
    NestJS
    Node.js
    Web Development
    JavaScript
    React
  • $20 hourly
    • 5.0/5
    • (5 jobs)
    Hello there, I'm a Software Engineer and I have been developing Web & Mobile apps in the Software Development Industry since 2017. I'm skilled in Backend development with Java/Kotlin with Spring Boot and have experience in designing Beautiful Frontends in Angular. I've been responsible for the complete Software Development Life-cycle of next-generation products, starting from Requirement Accumulation to Software Design, Development, Testing, and Deployment. Top Skills: * Back-end Development: Java, Kotlin, Spring, Spring MVC, Spring Boot, Spring Data JPA, Spring Data REST, Spring Batch. * Front-end Development: Javascript/Typescript, Angular2+. * UI Design: HTML5, CSS3 with Sass, Tailwind, AdobeXD. * Databases: Posrgresql, MySQL and MongoDB. * Test: JUnit, Mockito, Jasmine, Karma, Cypress. * CI/CD: Jenkins, Github Actions. * Version Control: Git, SVN. Feel free to send me a message if you have any question. You can typically expect a reply within few hours. Thanks for reading! :)
    Featured Skill Spring Framework
    TypeScript
    Git
    PostgreSQL
    Spring MVC
    MongoDB
    Spring Boot
    Jenkins
    MySQL
    JavaScript
    Angular
    SQL
    Java
  • $20 hourly
    • 4.8/5
    • (1 job)
    💼 Experienced Full-Stack Developer | Java Spring Boot & Vue.js Specialist | AI Engineer Hi! I’m Naeem, a professional software developer with 6 years of experience in building enterprise-grade web and mobile applications. I specialize in Java (Spring Boot, Microservices) on the backend and Vue.js / Quasar Framework on the frontend. I’ve successfully delivered complex solutions across asset management, budgeting, and maintenance domains, currently contributing to multinational SaaS products. From REST API development and database design to responsive UIs and performance optimization, I handle full-cycle development with precision and scalability in mind. 🔧 Key Skills: • Java 8, 11, 7, Spring Boot, JPA, Hibernate, MySQL • Vue.js, Quasar, REST APIs, Axios • Microservices, Security, Pagination, Localization (EN/FR) • Excel Import/Export, File Uploads, Relational Data Mapping.
    Featured Skill Spring Framework
    Artificial Intelligence
    Web3
    Generative AI Prompt Engineering
    Quasar Framework
    Vue.js
    Website
    JavaScript
    Spring Boot
    Java Persistence API
    MySQL
    Hibernate
    Microservice
    SQL
    Java
  • $35 hourly
    • 5.0/5
    • (17 jobs)
    I am a highly skilled and Top Rated Plus Software Engineer with over 10 years of experience specializing in cloud application development using Microsoft technologies and Java SpringBoot. My expertise lies in delivering exceptional Microsoft Azure-based microservices using .NET Framework, .NET Core and Java SpringBoot. I have a proven track record of successfully completing projects in various domains. Here's why you should consider hiring me: ✅ 8 Years of IT Experience: With a focus on Microsoft Azure-based applications and microservices, I bring a wealth of industry knowledge and technical expertise to every project. ✅ Azure Services Mastery: I possess extensive expertise in a wide range of Azure services, including Worker and Web Roles, Azure Service Fabric, Azure Functions, Azure Blob Storage, Azure Monitor Logs, Azure Service Bus, and more. I can architect, develop, and optimize cloud solutions tailored to your specific requirements. ✅Azure DevOps Proficiency: I am an expert in Azure DevOps, enabling seamless automation of tasks, continuous integration and deployment, artifact management, and policy enforcement. I have a strong background in setting up libraries, managing builds and releases, and generating comprehensive test coverage reports. ✅Application Tracking and Monitoring: I have a deep understanding of tracking and monitoring applications using SEQ, Serilog, Azure Application Insight, NLog, and other logging frameworks. I can assist in creating analytic dashboards to provide valuable insights into your application's performance and user behavior. ✅ NodeJS and TypeScript Experience: With 2 years of hands-on experience in NodeJS, Express JS, TypeScript, and Azure Blob Storage, I am well-versed in developing robust and scalable solutions in these technologies. ✅ Legacy Application Modernization: I successfully migrated a large CMS application from .NET 4.3 to .NET Core 3.1, ensuring improved performance, scalability, and maintainability. ✅ Dashboard Creation: I have in-depth knowledge of creating informative and visually appealing dashboards using Azure DevOps, Azure Portal, and PowerBI. I can help you gain valuable insights into your projects and make data-driven decisions. ✅ Motivated and Adaptable: I am an extremely motivated professional who thrives under pressure, meets deadlines consistently, and readily accepts new challenges. I am quick to adapt to emerging technologies, ensuring that your projects stay at the cutting edge. By hiring me, you can be confident in receiving top-notch development skills, a strong commitment to excellence, and a collaborative approach to delivering exceptional results. Let's discuss how I can contribute to your upcoming projects and help you achieve your business goals. In my career, I have worked on these technologies Microsoft Windows Azure, Azure DevOps, Microservices, Advance C#, .Net Framework, ASP.NET MVC 5, .NET Core, Rest API, WPF, Window Forms, Entity Framework, LINQ, TypeScript, Node JS, Express JS, Basic React JS, JavaScript, Python, Web Services, Bootstraps, JAVA, MS SQL, Serilog, Octopus Deployment, LaunchDarkly, Swagger, GitHub, OpenId Connect, JAVA, SpringBoot, Hibernate, Spring Framework, Spring MVC
    Featured Skill Spring Framework
    Spring Boot
    Spring Data
    Spring MVC
    DevOps
    Microsoft Azure SQL Database
    .NET Framework
    C#
    Database
    ASP.NET Core
    .NET Core
    ASP.NET MVC
    Azure DevOps
    ASP.NET Web API
    Java
  • $15 hourly
    • 5.0/5
    • (2 jobs)
    🎯 Full-Stack Java Developer | Spring Boot, Microservices, Angular, AWS, DevOps, GenAI (Agent AI, RAG, Chatbots) I’m a Full-Stack Senior Developer with 6+ years of experience building secure, scalable, and high-performance applications.I bring deep expertise in Java (8–17), Spring Boot, Angular/React, and cloud-native, GenAI solutions, including Agent AI, RAG, and Chatbot development. 💡 Technical Expertise: Backend: Java (8–17), Spring Boot, Spring Cloud, Spring Security, Spring Data JPA, Hibernate, REST APIs, OAuth2, JWT Frontend: Angular, React, JavaScript AI & Chatbots: Agent AI, Retrieval-Augmented Generation (RAG), Custom Chatbots using OpenAI APIs, LangChain, Vector DBs Architecture: Microservices, Event-Driven Systems, CQRS, SAGA Pattern Cloud & DevOps: AWS (ec2, SQS, SNS, S3 bucket), Docker, Kubernetes, Jenkins Databases: MySQL, PostgreSQL, Oracle, MongoDB, Amazon QLDB Testing & Quality: JUnit 5, Mockito, Jest, Enzyme, TDD, Snapshot Testing, SonarQube Monitoring: Prometheus, Grafana, ELK, AWS CloudWatch Tools & Process: Git, Jira, Confluence, Agile (Scrum) ✅ What You Can Expect: Fast turnaround and reliable delivery Clean, scalable, and secure code Hands-on expertise with GenAI-based chatbot integrations Strong DevOps and cloud deployment pipelines Clear and proactive communication Let’s work together to turn your idea into a high-performing, intelligent solution
    Featured Skill Spring Framework
    Apache ActiveMQ
    Angular 8
    JHipster
    Apache Kafka
    Desktop Application
    Spring Boot
    Docker
    Database
    Angular
    Spring Security
    API
    Java
    Hibernate
    Software Architecture & Design
  • $5 hourly
    • 5.0/5
    • (4 jobs)
    I am skilled backend engineer with 5+ years of experience specializing in Java Spring Boot development. With a foundation in software engineering principles, I have a proven track record of delivering high-quality and scalable backend solutions. Throughout my career, I have successfully designed, developed, and maintained robust RESTful APIs and microservices using Java Spring Boot. My in-depth knowledge of Spring frameworks, including Spring MVC and Spring Data, allows me to create efficient and reliable backend systems. I am adept at implementing various design patterns and best practices to ensure clean, modular, and maintainable code. My expertise extends to database design and optimization, with proficiency in SQL and experience working with relational databases like MySQL or PostgreSQL. I have a strong understanding of ORM frameworks such as Hibernate and can effectively model complex data structures. In addition to my technical skills, I am an excellent team player who thrives in collaborative environments. I have experience working in Agile development methodologies, participating in sprint planning, and effectively communicating with cross-functional teams. I am also passionate about continuous learning and staying up to date with the latest trends and advancements in backend development. With a solid foundation in Java Spring Boot, exceptional problem-solving abilities, and a dedication to delivering high-quality software, I am confident that I would be an asset to any team seeking a backend engineer.
    Featured Skill Spring Framework
    Spring Data JDBC Extensions
    JDBC
    Java GUI
    MySQL
    PostgreSQL
    Postman
    Database Design
    API Testing
    Spring Boot
    Spring MVC
    JUnit
    REST API
    JetBrains IntelliJ IDEA
    Java
  • $10 hourly
    • 5.0/5
    • (3 jobs)
    Hi, I’m Intikhab Mehdi, a passionate Backend developer with over 5+ years of experience in the industry. Specializing in Java, Spring Boot Backend Development, I’ve completed numerous international projects, delivering immersive and engaging web experience. What sets me apart is my collaborative spirit, clear communication with clients, and adept project management from start to finish. I’m known for working efficiently solo and with teams to bring visions to life. I prioritize delivering results on time and within budget, always with a proactive and solution-oriented approach to challenges. My goal is to exceed client expectations through high-quality backend development and unwavering dedication to each project. ** Backend Development** Experienced in backend development and I have worked on Java, Spring, Spring Boot, Spring Security, Spring Batch, Spring Profiling, Spring Actuator and SQL databases like MySQL, PostgreSQL and also NoSQL database MongoDB. I have also worked on Docker and Prepared CI/CD pipeline for Methvin Project mentioned below using GitHub Actions. I develop both RESTful and Soap API's which are consumed on front-end systems like web and mobile including android and ios. I have worked with international clients in my 5+ years of experience and developed highly stable platforms. **🕹️ Projects** 1- PropertyOnion.com : Platform for house auctions, mortgage, title search, save search etc in Florida. 2- Methvin : Platform for civil engineering tools takeoff, pricing, agile and estimation in Newzeland. 3- NayaPay (fintech) : Best Fintech in Pakistan. EMI solution. 4- ChargeUp : Platform for expense management for corporates. Let’s create the next big hit in the development world together! Contact me to bring your dream project to life.
    Featured Skill Spring Framework
    Dropwizard
    Docker
    Hibernate
    JUnit
    MongoDB
    PostgreSQL
    MySQL
    Microservice
    Spring Cloud
    Spring Data MongoDB
    Spring Batch
    Spring Security
    Spring Boot
    Java
  • $25 hourly
    • 4.9/5
    • (3 jobs)
    Are you looking for a Java Backend Engineer who can build scalable, high-performance, and secure applications? With 6+ years of experience, I specialize in Spring Boot microservices and AWS cloud solutions, helping businesses develop robust, enterprise-grade systems that handle millions of requests. 💡 How I Help Clients: ✅ Optimize backend performance → Faster, more efficient applications ✅ Build scalable microservices → Modular and cloud-ready architecture ✅ Ensure security & compliance → Implementing OAuth2, JWT, role-based access (RBAC), and SSO ✅ AWS cloud migration & DevOps → Deploying fault-tolerant applications using AWS ECS, Lambda, RDS, and CI/CD 🚀 Tech Expertise 🔹 Java: Java 8, 11, 17 (Lambdas, Stream APIs, Functional Interfaces) 🔹 Spring Framework: Spring Boot, Spring Security, Spring Data, Hibernate, Spring Cloud 🔹 Microservices Architecture: Scalable API development, API Gateways, Event-driven systems 🔹 Databases: PostgreSQL, MySQL, MongoDB, AWS Redshift, Redis 🔹 AWS Cloud: EC2, ECS, S3, RDS, IAM, Lambda, API Gateway, SQS, SNS 🔹 DevOps & CI/CD: Git, BitBucket, Maven, Docker, Kubernetes, Jenkins 🔹 Frontend (for full-stack projects): Angular, React, HTML5, JavaScript, CSS, SCSS Why Choose Me? ✅ Proven Success → Helped SaaS startups scale their applications to millions of users ✅ Enterprise-Level Development → Experience in AI-driven resume formatting, ATS integrations, workflow automation, healthcare, e-commerce industries ✅ Long-Term Collaboration → Many clients have trusted me for ongoing development & support ✅ 100% Commitment → I take ownership of projects and deliver quality on time Let’s Build Something Great Together! I’m excited to learn about your project and help you develop a secure, scalable, and high-performance solution. Let’s connect and discuss your business needs!
    Featured Skill Spring Framework
    AWS Development
    Docker
    API Integration
    Microservice
    OAuth
    API
    RESTful API
    Software Architecture & Design
    Web Development
    Database Architecture
    Hibernate
    Spring Security
    Spring Boot
    Java
  • $25 hourly
    • 5.0/5
    • (3 jobs)
    I am a Lead Back-end developer, driven by a passion for crafting exceptional solutions. With an extensive background spanning over 10 years in Java + Spring and Mobile Android projects, I possess a strong foundation in solution architecture. Let us move beyond the technicalities and focus on the reasons why our collaboration would be highly successful: 1. Proven Track Record: Having successfully completed more than 12 projects, I have consistently delivered high-quality products that have satisfied clients. 2. Diverse Experience: Throughout my career, I have worked across diverse industries, including Telecom,Banking,Airline, Transportation, CRM. This exposure has enabled me to explore various domains and adapt to new challenges. 3. Expertise in AI and ML: I possess extensive expertise in AI, GPT, and ML technologies. By joining forces, we can create intelligent and cutting-edge solutions that push the boundaries of innovation. 4. Agile Collaboration: I firmly believe in an agile and iterative approach. Through close collaboration and rapid iteration, we can attain remarkable results. I have a top-notch expertise in React,Angular ,Java + Spring and Android projects are my top priority. Allow me to highlight the technologies I have mastered: Servlet,JSP,RMI,Spring Security, Spring MVC, Spring Data, Spring Batch, JPA, JDBC, Hibernate,RabbitMq RDBMS, SQL,Oracle,MySQL, PostgreSQL, Redis, MongoDB, ElasticSearch, GraphDB Furthermore, I am familiar with the following tools: SSH, Docker, Jenkins, Linux, Nginx, Gitlab Runners, Bash (Base) Deployment: Git, Tomcat, GlassFish, Maven, Gradle, Swagger, OpenSearch To ensure top-notch quality, I rely on JUnit, Selenium, and Spring Assured for testing purposes. I’m not just your go-to developer; I am here to cultivate a strong professional relationship. Let us collaborate and endeavor to create something truly exceptional. I am excited to embark on this journey with you!
    Featured Skill Spring Framework
    Spring Boot
    Jakarta Server Faces
    Java Servlet API
    PHP
    Jakarta Messaging
    Android
    Angular
    Android App Development
    Python
  • $30 hourly
    • 5.0/5
    • (14 jobs)
    I am a seasoned Java Developer with extensive experience in architecting and implementing sophisticated Java-based systems that solve complex business challenges across various sectors, including healthcare, fintech, e-commerce, telecommunications, and enterprise. My solutions combine technical excellence with a deep understanding of business requirements to deliver measurable ROI. ✅ PROVEN RESULTS & SUCCESS METRICS ✓ Healthcare Portal (Java/Spring Boot/WebSockets): Developed HIPAA-compliant microservices with secure real-time communication, increasing patient engagement by 30% while reducing administrative costs by 25% ✓ Java Financial Services Platform (Kafka/WebSockets): Built real-time monitoring system processing $2M+ daily with 99.99% uptime, providing instant transaction visibility and anomaly detection ✓ Java E-commerce Integration (Java/Shopify): Applied enterprise Java practices to modern e-commerce, reducing page load times by 40% and increasing conversion rates by 52% ✓ Java Audio Processing Microservice (GKE): Engineered cloud-native solution processing files up to 300MB with 40% improved performance through stream processing optimization Java Legacy System Modernization: Transformed monolithic Java applications to Spring Boot microservices, reducing code complexity by 30% and increasing feature delivery velocity by 3x 🛠️ TECHNICAL EXPERTISE Java & Backend Technologies: ✓ Java 8/11/17 core development, Spring Boot, Spring Cloud, Spring Security, Spring WebSocket ✓ Quarkus Java frameworks for cloud-native applications with exceptional performance ✓ Vert.x for reactive Java programming and high-throughput applications ✓ Java microservices architecture, API design (REST, GraphQL, gRPC, SOAP) ✓Real-time Java communication systems with WebSockets, STOMP, SockJS Event-driven Java architecture with RabbitMQ, IBM MQ enterprise messaging JPA/Hibernate, JdbcTemplate, Spring Data, connection pooling optimization JUnit, Mockito, Maven/Gradle for Java development AI Integration & Development: Integration of AI/ML services with Java backend systems LLM-powered features in enterprise Java applications Data pipeline design for ML model training and inference Secure AI data processing with compliance considerations Real-time analytics with AI-driven insights Cloud & DevOps: AWS (EC2, ECS, Lambda, S3, DynamoDB, RDS) Google Cloud Platform (GKE, Cloud Storage, Cloud Functions) Azure (App Service, Functions, Cosmos DB) Docker, Docker Swarm, Kubernetes CI/CD pipelines with Jenkins, GitHub Actions Nexus Repository Manager for Java artifact management Data Engineering & Integration: ELK Stack implementation for logging and monitoring Data pipeline design with Kafka Streams JDBC optimization and connection pooling MongoDB, PostgreSQL, Oracle, Redis Real-time analytics and reporting solutions Frontend Technologies: React.js with WebSocket/STOMP integration Angular (with TypeScript) SockJS, Stomp.js for real-time client applications Responsive design and performance optimization Micro-frontend architecture for enterprise apps 🌟 VALUE-DRIVEN APPROACH ✓ Java Business Solutions: I deliver Java technical solutions that drive measurable business outcomes ✓ Java Architecture: I design scalable Java systems that reduce long-term maintenance costs ✓ Java Performance: I implement high-throughput, low-latency Java solutions for mission-critical applications ✓ Java Security: I build Java systems with security and compliance (HIPAA, etc.) as core principles ✓ Java Resilience: I build Java systems that gracefully handle failures and recover automatically ✓ Java Knowledge: I provide comprehensive documentation and mentor team members on Java best practices ⭐ PROJECT SCOPE & ENGAGEMENT OPTIONS Java architecture design and implementation of Java/Spring Boot/Quarkus applications Java real-time system development with WebSockets and event-driven architecture Java legacy system modernization and migration to microservices AI integration with Java backend systems Secure Java healthcare application development with HIPAA compliance Enterprise Java messaging system optimization (Kafka, IBM MQ) Java cloud-native application development on AWS, GCP, or Azure Java performance optimization and scaling of existing applications Java CI/CD pipeline implementation and DevOps automation Java technical leadership and architectural guidance Available for both project-based work and long-term engagements. Let's discuss how my Java expertise can help scale your application and drive measurable business results. Keywords: Java Developer, Java Development, Java Architecture, Spring Boot, Quarkus, Vert.x, Microservices, WebSockets, Real-time Applications, AWS, GCP, Kubernetes, Cloud Native, API Design, Kafka, Event-Driven Architecture, System Design, Performance Optimization, Legacy Modernization, Technical Leadership, Full Stack, AI Integration, HIPAA Compliance, Enterprise Messaging, IBM MQ, Healthcare Systems, Financial Technology
    Featured Skill Spring Framework
    Azure DevOps
    DevOps
    MySQL
    PostgreSQL
    Oracle
    React
    AWS Development
    RESTful API
    Microservice
    Spring MVC
    Spring Security
    Spring Cloud
    Spring Boot
    Java
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