Abhigyan T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I am a Senior Full‑Stack Java Developer with 12+ years of experience, delivering scalable and secure enterprise applications using Java, Spring Boot, and Microservices. I also leverage AI‑assisted development tools in my daily workflow to improve delivery speed, code quality, and maintainability. My expertise spans backend architecture, full‑stack development, cloud, integrations, and modern front‑end frameworks such as Angular and React. What I Do for Clients- Build and maintain enterprise‑grade Java applications Design and implement Microservices using Spring Boot and Spring Cloud Create responsive front‑end applications using Angular and React Integrate legacy systems and third‑party services using MuleSoft Improve performance, scalability, and system stability AI‑Assisted Development I use AI‑assisted development tools as part of my daily workflow to increase efficiency while maintaining full control over architecture and code quality. AI Tools: ChatGPT, Claude, GitHub Copilot, OpenAI APIs for AI‑assisted coding, reviews, automation, and rapid prototyping. Backend Development - Languages: Java, J2EE Core Java: OOP, Multithreading, Exception Handling, Data Structures Frameworks: Spring, Spring Boot, Spring MVC, Spring Security, Spring WS, Spring Cloud ORM & Persistence: Hibernate, JPA, JDBC Web Services: REST (JAX‑RS), SOAP (JAX‑WS), XML‑RPC Microservices Architecture: Spring Cloud, Netflix OSS, service discovery, load balancing, fault tolerance Messaging: Apache Kafka Front‑End Development Expertise Frameworks: Angular, AngularJS, React.js Web Technologies: HTML5, CSS3, SASS, Tailwind CSS JavaScript: JavaScript, jQuery, AJAX Databases: MySQL, PostgreSQL, Oracle, DB2, NoSQL Integration and Middleware MuleSoft for system and API integrations Secure API development with authentication and authorization Third‑party API and legacy system integration Cloud, DevOps, and Tools Cloud Platforms: AWS: EC2, Lambda, S3, Redshift, SageMaker, Cognito Azure: Virtual Machines, Blob Storage, Azure AD, Data Factory Containerization: Docker, Kubernetes Testing: JUnit, Mockito Version Control: Git, SVN, GitHub Tools: Eclipse, NetBeans, STS, VS Code, Postman, MySQL Workbench Hands‑on experience with EDI systems and AS400 (IBM i) to Java conversion, transforming legacy business logic into modern Java and Spring Boot applications with improved scalability and maintainability. Ready to collaborate? - Click “Hire Me” or send an invite, and let’s discuss how I can add value to your project Keywords Java Developer, Senior Java Developer, Full Stack Developer, Full Stack Java Developer, Backend Developer, Spring Boot Developer, Microservices Developer, Spring Cloud, Spring Security, REST API Developer, SOAP API Developer, Hibernate, JPA, Kafka Developer, MuleSoft Developer, Angular Developer, React Developer, MySQL, PostgreSQL, Oracle, NoSQL, Docker, Kubernetes, AWS , Azure , JUnit, Mockito, JasperReports, AI Assisted Development, GitHub Copilot