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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 architect with more than 25 years of experience in following technologies- ✔ Java, Enterprise Java, Grails, Groovy, EJB, JSP, JSF2, Servlets, Hibernate,JPA, Mybatis, Struts(1.3,2.0), Netflix OSS, Spring Cloud, Spring Boot, Spring, Spring-MVC, Tiles, REST, AngularJS-2, Javascript, JQuery, AJAX, OSGi, SOAP, JSON, Ajax, Axis, JAX-WS, JSR-168, MDB, JMS, Hibernate-search, Lucene,Solr, Liferay, LDAP, AD, JUnit, Equinox, CXF, Grails with Groovy, Vaadin, OSGi, UML, Castor, Pentaho, Jasper, BIRT, Selenium, Swing, AWT, Oracle, DB2, SqlServer, MySql,PostgreSQL, MongoDB, Highcharts, Play, Activiti BPM, Camunda, Apache Kafka, Rabbit MQ, Elastic search, AWS, XMPP, Google Aanalytics, Piwik, Adwords, SEO, Docker ✔ Cloud services : AWS (EC2, RDS,SQS, S3), Google, Azure ✔ Application Servers: Websphere , Weblogic, JBoss, Glassfish, Geronimo ✔ Web Servers: Tomcat, Apache, Resin, Nginx ✔ Packages: WCS, ATG, Sterling Commerce(Yantra) OMS, Manhattan TMS, OMS, TPM, Oracle PIM, Tibco, Webmethods, WordPress, Zimbra. ✔ Social Integration : Facebook, Twitter, YouTube, Linkedin, Google+ Integration ✔ Payment Gateway : Paypal, Stripe, Twillo ✔ Methodology: RUP, Agile, XP, TDD ✔ IDE: IntelliJ, GGTS, Eclipse, NetBeans, JDeveloper, JBuilder, RAD ✔ Code Versioning: ClearCase, SVN, Mercurial, GIT ,TFS, StarTeam ✔ Quality: ClearQuest, Quality Center ✔ Build: Gradle, Maven, Ant, Ivy ✔ CI: Hudson, Jenkins ✔ Performance: JProfiler, JMeter, LoadUI ✔ Project Tracking: JIRA, Redmine, MPP ✔ Misc : Confluence, Crucible, Fitnesse, LPSolve, SoapUI, WLE, Toad, Rational Rose Have extensive expertise in developing complex business solutions using Java/Enterprise Java, Groovy with Grails and related technologies for the following verticals - Supply Chain Management * E-Commerce * Investment Banking and Finance * Analytics * Health-care Have developed enterprise products for * Manhattan's OMS, TMS, Inventory Management, Trading Partner Management * FICO's Insurance Fraud Manager - used predictive analytic models. Have taken multiple e-commerce applications to production and provided support thereafter for * Tesco change program * GE power system Parts-Edge system * Met-life online quote system Expertise in- Architecture, Design, OOAD, SOA, Design Patterns, UML, Providing Scalable Solution, RUP and Agile methodology, Java, Enterprise Java, Open Source Frameworks

🚀 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | 𝟏𝟖+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 🥇| 𝟏𝟓𝐊+ 𝐇𝐨𝐮𝐫𝐬 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 | 𝟓-𝐒𝐭𝐚𝐫 𝐑𝐞𝐯𝐢𝐞𝐰𝐬 ★ | 💥 Successfully built and delivered variety of projects : 𝐰𝐞𝐛𝐬𝐢𝐭𝐞𝐬 and 𝐒𝐚𝐚𝐒 platforms to 𝐌𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 and 𝐜𝐥𝐨𝐮𝐝-𝐛𝐚𝐬𝐞𝐝 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. ✔ 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨: → 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Full-stack websites & web applications → 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈: Rest API, Microservices, SAAS, & Cloud based backend solutions → 𝐇𝐞𝐚𝐝𝐥𝐞𝐬𝐬 𝐂𝐌𝐒 : Websites, Apps, Api or end to end solution on top of Headless cmses → 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: AstroJS, VueJS, React ✔ 𝐅𝐮𝐥𝐥𝐬𝐭𝐚𝐜𝐤 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝐇𝐚𝐧𝐝𝐬 𝐨𝐧 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐨𝐧 𝐥𝐚𝐭𝐞𝐬𝐭 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐚𝐧𝐝 𝐟𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ → 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 : Java / Sprint boot / Grails / Spring security / Hibernate / NodeJS + more → 𝐀𝐏𝐈 : Rest API / Microservices / JamStack / Headless CMS ( Directus, Payload and others ) → 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 :, AstroJs, VueJS, React, Ionic, Html / CSS / Javascript / Tailwind CSS → 𝐃𝐞𝐯𝐎𝐩𝐬:, Linux, Docker, Digital ocean, Linode → 𝐌𝐨𝐛𝐢𝐥𝐞: Android & Cross platform mobile app development with Ionic → 𝐂𝐃𝐍:, Netlify, Vercel, Bunny CDN etc ✔ 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞: ✓ Proven track record, 𝟏𝟖+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞, 100% job success and 5 star reviews ✓ I write 𝐜𝐥𝐞𝐚𝐧, 𝐰𝐞𝐥𝐥-𝐭𝐞𝐬𝐭𝐞𝐝 code that’s scalable and easy to maintain ✓ Experience contributing to 𝐦𝐚𝐣𝐨𝐫 𝐨𝐩𝐞𝐧-𝐬𝐨𝐮𝐫𝐜𝐞 𝐟𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 like Grails ✓ Ability to work 𝐢𝐧𝐝𝐞𝐩𝐞𝐧𝐝𝐞𝐧𝐭𝐥𝐲 or as part of your 𝐭𝐞𝐚𝐦 ✓ Expertise on 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐢𝐧𝐠 and 𝐞𝐧𝐡𝐚𝐧𝐜𝐢𝐧𝐠 existing projects ✓ Developer, but with deep understanding of 𝐒𝐄𝐎, User experience, 𝐂𝐨𝐫𝐞 𝐰𝐞𝐛 𝐯𝐢𝐭𝐚𝐥𝐬, Google 𝐬𝐞𝐚𝐫𝐜𝐡 𝐜𝐨𝐧𝐬𝐨𝐥𝐞 play console and more. ✔ 𝐂𝐨𝐧𝐭𝐫𝐢𝐛𝐮𝐭𝐨𝐫 𝐭𝐨 𝐩𝐨𝐩𝐮𝐥𝐚𝐫 𝐨𝐩𝐞𝐧𝐬𝐨𝐮𝐫𝐜𝐞 𝐟𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 → Contributor to grails core framework with bug fixes & enhancementes → Author / maintainer / Contributor to some of popular open source Grails plugins → Grails 3 external config plugin → Recaptcha-spring-security → Nimble plugin → Jcaptcha-spring-security → Elfinder file manager → Shiro Oauth plugin → Html cleaner → Fields plugin ✔ Github repo for examples of my work : 𝗴𝗶𝘁𝗵𝘂𝗯 @𝘀𝗻𝗶𝗺𝗮𝘃𝗮𝘁

🚀 Technical Lead & Senior Engineer | 2,200+ Upwork Hours | 100% Job Success I don't just write code; I design clean architectures and take total technical ownership of your product. I am a Technical Lead and Senior Full-Stack Engineer with over 6 years of experience building high-performance web applications and complex API networks. With a flawless 100% Job Success Rate across 2,200+ hours on Upwork, I specialize in bridging heavy enterprise backend ecosystems with modern, intelligent automation. ⚡ Core Architecture & Integration Expertise: • 🤖 AI & LLM Integration: Embedding OpenAI, Anthropic, or Gemini APIs for secure context retrieval, automated data workflows, and intelligent feature layers. • 🔌 Custom API Architecture: Designing secure, high-throughput RESTful and GraphQL API gateways from scratch using Java (Spring Boot) and Node.js/Express. • 🔄 Resilient Third-Party Systems: Orchestrating fault-tolerant integrations with webhooks, external CRMs, and payment gateways (Stripe, PayPal) with clean failover handling. • 📊 Real-Time Streams & UI: Leveraging WebSockets for live, low-latency data dashboards built on high-performance Angular and React.js frontends. 🛠️ The Technical Toolkit: • Backend: Java, Spring Boot, Node.js, Express.js, Groovy Grails, Gradle, WebSockets • Frontend: Angular, React.js, JavaScript (ES6+), HTML5, CSS3, SASS/LESS, Bootstrap • Databases & Tools: MySQL, MongoDB, PostgreSQL, Git, Postman, Jira 💎 The Senior Standard I Bring: • Logic-UI Separation: I isolate core computations from the front-end components, ensuring your platform remains secure, stable, and effortless to scale. • AI-Native Velocity: I utilize an optimized, AI-native development workflow to build, test, and audit production-grade code at twice the speed of traditional timelines. • Product Ownership: I proactively review specifications to optimize API data costs, eliminate bottlenecks, and ensure rapid, clean delivery. If you need an autonomous Technical Lead who can take total ownership of your technical blueprint and execute flawlessly, let’s connect!

Senior Java Developer | Spring Boot Expert | Microservices | AWS | AI-Assisted Development I help businesses build scalable backend systems, enterprise APIs, and cloud-native applications using Java, Spring Boot, Hibernate, Microservices, AWS, PostgreSQL, MongoDB, Kafka, and modern AI-assisted development tools. With strong experience in Java backend development, I specialize in: ✔ Java 8/11/17+ Application Development ✔ Spring Boot & Microservices Architecture ✔ REST API Development & Third-Party Integrations ✔ Hibernate / JPA / Performance Optimization ✔ PostgreSQL, MySQL, MongoDB ✔ Event-Driven Systems (Kafka, Messaging) ✔ AWS, Docker, Kubernetes ✔ Secure APIs (Spring Security, JWT, OAuth) ✔ Legacy System Modernization ✔ Full-Stack Development (Angular, Node.js) ✔ AI-Assisted Development using ChatGPT, Claude AI, and GitHub Copilot What I Deliver • Production-grade Java Spring Boot applications • High-performance backend APIs • Scalable microservices architectures • Enterprise integrations and data-driven systems • Performance tuning, debugging, and system optimization • Cloud-ready deployments on AWS Why Clients Hire Me I focus on clean architecture, maintainable code, and practical solutions—not overengineering. By leveraging modern AI tools like ChatGPT, Claude AI, and GitHub Copilot, I accelerate development, improve code quality, generate documentation, and speed up debugging while ensuring every solution is thoroughly reviewed and production-ready. Whether you need: • A Spring Boot developer for a SaaS platform • A Java backend developer for APIs, integrations, or cloud applications • Help with microservices, performance optimization, or legacy modernization • A developer who combines deep engineering expertise with AI-assisted productivity I can help. I've worked on complex backend systems involving real-time event processing, enterprise integrations, database-intensive workflows, cloud-native deployments, and event-driven architectures. If you're looking for a reliable Java/Spring Boot expert who takes ownership, communicates proactively, and delivers scalable solutions on time, let's discuss your project.

Hello! I’m a Senior Backend Engineer with 10+ years of experience building scalable, secure, and high-performance systems using Java (Spring Boot), Python, and Node.js. I help businesses design and develop robust backend architectures, microservices, APIs, and AI-powered platforms—especially in healthcare, wellness, e-commerce, and AI-driven products. 🚀 What I can help you with: * Design & build scalable backend systems and microservices * Develop high-performance REST APIs using Spring Boot, FastAPI, and Node.js * Build AI-powered platforms using RAG pipelines, embeddings, vector databases, and LLM integrations * Implement secure authentication and authorization (Keycloak, JWT, OAuth2, Cognito) * Build event-driven systems using Kafka and RabbitMQ * Develop AI content and knowledge platforms with Next.js, Qdrant, and CMS integrations * Design healthcare integrations using FHIR and Azure Health Data Services * Optimize performance, scalability, observability, and fault tolerance 🛠️ Core Tech Stack: * Java, Spring Boot, Python, FastAPI, Node.js * Microservices, REST APIs, Event-driven Architecture * Kafka, RabbitMQ * MySQL, PostgreSQL, Qdrant * Keycloak, AWS Cognito, Spring Security * AWS, Azure (FHIR, Functions, Storage) * Next.js, AI/LLM integrations, RAG pipelines 🧩 Recent Work Highlights: -- AI-Powered Traditional Medicine Platform (AdiVaidya) * Built an AI-powered health content and knowledge platform focused on Ayurveda, Siddha, Unani, Homeopathy, and Naturopathy * Developed intelligent RAG pipelines using embeddings, vector databases (Qdrant), and LLM-based generation * Implemented semantic search, PDF parsing pipelines, structured AI content generation, and disease-specific retrieval workflows * Designed scalable backend APIs and AI microservices using Spring Boot, Python, and Node.js * Integrated SEO-driven content architecture, sitemap generation, analytics, and AI-assisted workflows -- Healthcare SaaS Platform (CareNexus) * Built scalable backend for patient care and remote monitoring systems * Integrated Azure FHIR services and AI-based patient assessments * Designed secure architecture using Keycloak and JWT-based authentication -- E-commerce Platform * Developed high-performance APIs using Spring Boot and Node.js * Implemented event-driven architecture using Kafka and RabbitMQ -- Secure Enterprise System (DoD Project) * Built backend services with AWS integrations * Focused on security, monitoring, scalability, and reliability