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When your backend is breaking under load, your microservices are drifting, or your APIs aren't talking to each other, I'm the engineer who fixes it without breaking everything else. I build and maintain production-grade systems using Java Spring Boot, React, Node.js, and cloud-native infrastructure. My work runs at scale: Microservices handling 20,000+ concurrent users (Spring Boot + Kafka + Kubernetes) REST APIs serving 50,000+ monthly users with clean contracts and error handling CI/CD pipelines on GitHub Actions and Jenkins with automated test gates AWS deployments (EC2, EKS, ECR, ALB) with zero-downtime rolling releases Elasticsearch integration cutting search response times from 800ms to under 200ms OAuth 2.0 + TLS security reducing vulnerability incidents by 70% What I help with: Java Spring Boot microservices, build, fix, optimize React frontend connected to backend APIs Kafka event-driven architecture Docker + Kubernetes deployments AWS cloud infrastructure CI/CD pipeline setup and maintenance API integration and debugging 100% Job Success · Rising Talent · 0-4hr response time If your system is slow, broken, or needs scaling, message me and I'll tell you exactly what's wrong.

Java Spring Developer with over 15+ years of experience building scalable, high-performance solutions across diverse industries. Technical Expertise ✅Spring Ecosystem: Spring Boot, Spring Batch, Spring Cloud, Spring Security, Spring AOP, Spring MVC, JSP, Thymeleaf. ✅ AI : Claude , Codex , RAG ,Integration with OpenAI ✅Microservices & APIs: Microservices architecture, RESTful APIs. ✅Messaging & Event-Driven Systems: Apache Kafka, WebSocket, STOMP, Socket IO ✅Cloud Integration: AWS (ECS Fargate, S3, EC2, ALB, RDS). ✅Database Design: SQL (MySQL, Oracle, Yugabyte, PostgreSQL, MS SQL Server) ✅DevOps & Containers: CI/CD pipelines, Jenkins, Docker, Podman, Kubernetes ✅Search & Caching: Elasticsearch, Redis, Terracotta Caching ✅System Integration & Legacy Modernization: Seamlessly integrate modern applications with legacy systems ✅Frameworks & Tools: JHipster, Keycloak, Flowable, JBPM, Flyway, MapStruct, JavaFX, Java Swing ✅CMS Solutions: Documentum, Alfresco ✅XML & Web Services: SOAP, RESTful services ✅Reporting Tools: Crystal Reports, JasperReports, BIRT ✅Testing Framework/Tools: Junit5,Selenium,JMeter

I am a full stack developer with more than 15+ years of experience in Java Web Applications based out of Kochi India. Languages: Java/ J2EE, Javascript, HTML, CSS Backend Frameworks/ Libraries: Spring MVC, Spring Boot, Spring Integration, Spring Webflow, Spring Batch, Spring Reactive, Node JS Frontend Frameworks/Libraries: JSP, JSF, Primefaces, Bootstrap, Angular, React JS, Vue JS Database: Postgres, MSSQL, Oracle, MySQL, Mariadb, Redis, Neo4j, Cassandra, Mongo DB Cloud: AWS, GCP (Google Cloud), Azure, DigitalOcean Services: Authentication Services (Oauth, Auth0, Cognito, Keycloak), AWS Pinpoint, Databricks, Snowflake Open Source Projects: Archivesspace, Fineract, Hyrax Unit Testing: Spring Test, Mockito, EasyMock, PowerMock, Junit, Karate Other: OpenSearch, REST, SOAP, SDK, Mircroservices, API Integration Build Tool: Gradle, Maven, ANT CI/CD: Jenkins/ Bitbucket Pipeline/ Ansible/ Terraform Approches: TDD, BDD I have successfully worked with clients across various industries, including Fintech, Capital Markets, Banking, Insurance, Telecommunications, Retail etc and have a proven track record of delivering large-scale, enterprise-grade solutions. Whether you're looking for guidance on high-level architectural decisions or hands-on assistance with development, I can provide the expertise you need to drive success. Let’s connect to discuss how I can help you solve your technical challenges and create solutions that will scale with your business.

Hi! I’m Rashu, an Expert Java Back-End Developer. Are you looking for a reliable, detail-oriented back-end developer who delivers high-quality, scalable, and secure solutions? With over 5+ years of hands-on experience in Java-based backend development, I specialize in building powerful server-side applications that drive performance and growth. 🔧 Technical Skills & Tools: 🖥 Backend Development - Java, Spring Boot, Hibernate, JUnit, RESTful APIs & Microservices Architecture ☁ Cloud & DevOps - AWS (EC2, S3, RDS) 💾 Databases & Version Control - SQL, MySQL, PostgreSQL Git, Bitbucket 🏥 Domain Experience: *Healthcare: Developed a complete Hospital Management ERP Software used for streamlining patient records, billing, pharmacy, and more. Banking: Worked on secure, transaction-heavy systems with robust authentication and compliance. *Voice Testing Applications: Built reliable and performance-oriented back-end components for voice-based testing platforms. ✅ Why Work With Me: *100% commitment to client satisfaction *Known for being detail-oriented, reliable, and deadline-driven *Clean, maintainable code with proper testing using JUnit *Strong communication skills and proactive problem-solving 📩 Let’s Get Started! Let’s build something great together. I’m here to bring your project to life with efficiency and precision. Send me a message and let’s talk about how I can help! **This is not a company or agency account. Only the profile name is of my firm's name but I am an Independent Freelancer and all the information is about me only.

🏆 Top 3% on Upwork. ✅ Fluent English. ✅ Well versed with AI tools like claude cowork,antigravity, ci/cd, Jenkins, docker. ✅ Worked and delivered successful projects for enterprise clients like GAP Inc., AI apps for 180Med ✅ React ✅ Java 8, Spring Boot Microservices. Microservices Design patters and best practices. ✅ LLM , RAG , VectorDB , AI agentic Apps ✅ CSM® A results-driven Lead and Individual contributor with 15+ years of experience delivering enterprise-grade Java and Spring Boot applications for US and EU clients across healthcare, retail, and SaaS domains. I have deep expertise in microservices architecture, REST APIs, and cloud-native development using AWS and GCP — and have recently extended this into AI-powered systems, leading the delivery of LangGraph-based document extraction pipelines and Retrieval-Augmented Generation (RAG) systems integrated into live production platforms. Notable client experience includes GAP Inc. (supply chain allocation platform), Dedalus EU (healthcare enterprise modernisation), 180Med US (AI-driven medical document extraction), and UrbanSDK US (RAG-based analytics system). Core skills: Java 8/11/17, Spring Boot, Microservices, REST APIs, LangGraph, RAG, LLM APIs, AWS (Lambda, S3, API Gateway, DynamoDB), GCP Pub/Sub, Docker, NodeJS, PostgreSQL, MongoDB, MySQL. I work well with teams building on existing systems — adding capability without disrupting what already works.

Professional Java and ETL software developer with over 8 years of hands-on experience in software design and development, keen learner, cohesive team worker, seeking exciting work opportunities to explore and enhance knowledge of NextGen technologies.