Need a backend developer who can build secure, scalable APIs — and integrate AI into them — while actually understanding the business behind the product? That's exactly what I do. I'm a Senior Software Engineer at Optum (UnitedHealth Group), building enterprise healthcare applications with Java, Spring Boot, microservices, REST APIs, React, Next.js and AI integration. With 5+ years of production experience — including 4 years at Optum, one of the world's largest healthtech companies, and a year at Apisero in enterprise consulting — I know how to ship reliable systems that handle real scale, security, and users. What I bring to your project: - Backend: Java, Spring Boot, Spring Security, Microservices, REST APIs, Hibernate, JWT, Node.js - Frontend: React.js & Next.js for fast, responsive, SEO-friendly interfaces - AI integration: LLM features with the OpenAI & Claude APIs, RAG, and automations / AI agents (n8n) - Database: MySQL schema design and optimization - Domain edge: an MBA in Finance — I understand fintech, healthtech and SaaS products, not just the code A couple of recent builds (full case studies in my Portfolio section below): - InvestorVault — a full investor-management portal (Spring Boot + React + JWT + MySQL) with secure authentication and financial data handling - An AI job-matching agent (n8n + Claude API) that scores opportunities and drafts tailored responses automatically I'm a clear communicator, I hit deadlines, and I treat your product like my own — whether it's a new API, a full-stack app, an AI-powered feature, fixing an existing Spring Boot system, or shipping an MVP. Send me a note about your project and let's set up a quick call to see if we're a fit.

I am a Senior Java Developer with 12+ years of experience designing, building, and maintaining scalable backend systems using Java, Spring Boot, and microservices architecture. I specialize in: • Spring Boot–based microservices and RESTful APIs • Distributed systems (service decoupling, retries, fault isolation) • PostgreSQL, MySQL, MongoDB – schema design and performance tuning • Hibernate/JPA with clean and efficient data access patterns • API security, validation, and automated testing (JUnit, Mockito) • Docker, CI/CD pipelines, and AWS-based deployments AI & Intelligent Integrations: • Experience integrating REST-based AI/LLM APIs (GPT, Codex) into Java and Spring Boot backends • Using AI tools for code quality improvement, unit test generation, and developer productivity • Designing AI-enabled services while maintaining clean system boundaries, reliability, and scalability I have worked as a Lead Developer on enterprise-grade platforms in finance, compliance, healthcare, and e-commerce, where clean architecture, reliability, and long-term maintainability were critical. I can own backend architecture end-to-end or integrate seamlessly into an existing team and codebase.

I build end-to-end web applications — from pixel-perfect Angular/React frontends to robust Java Spring Boot backends. With 6+ years of professional experience, I have delivered fintech platforms, ERP systems, membership portals, e-payment solutions, and enterprise-grade microservices for clients across multiple industries. Whether you need a complete full-stack solution or targeted backend/frontend work, I deliver clean, scalable, production-ready code on time. 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 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔷 FRONTEND DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Angular (Components, Services, RxJS, Reactive Forms, Route Guards, HTTP Interceptors, Lazy Loading) ✅ React (Hooks, Context API, Redux, React Router, Axios) ✅ TypeScript, JavaScript (ES6+) ✅ HTML5, CSS3, Bootstrap, Tailwind CSS ✅ REST API integration from frontend ✅ Responsive & mobile-first UI design ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔶 BACKEND DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Java 8 / 11 / 17, JavaEE ✅ Spring Boot, Spring MVC, Spring Security (JWT / OAuth2) ✅ Spring Data JPA, Hibernate, JDBC ✅ Spring Microservices, Spring Cloud Gateway, Spring Integration ✅ REST APIs & SOAP APIs — design, development, integration ✅ Kafka, RabbitMQ, Zookeeper (event-driven architecture) ✅ JUnit, Mockito (unit & integration testing) ✅ Swagger / OpenAPI documentation ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🗄️ DATABASES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ PostgreSQL, MySQL, Oracle PL/SQL, MS SQL Server ✅ MongoDB, Cassandra (NoSQL) ✅ Redis (caching) ✅ Mongoose (MongoDB ODM) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⚙️ DEVOPS & TOOLS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Docker, Kubernetes ✅ Git, GitLab, GitHub, CI/CD Pipelines ✅ Linux (Ubuntu/CentOS) ✅ Nginx, Apache ✅ Postman, JMeter, Swagger ✅ Jira, Agile/Scrum ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💳 INTEGRATIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ MasterCard Payment Gateway ✅ SendGrid Email API ✅ WhatsApp Business API ✅ TextLocal SMS API ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📌 WHAT I HAVE BUILT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💥 Fintech e-payment platform — Spring Boot REST APIs + Angular UI + PostgreSQL + MasterCard integration 💥 Membership & event management portal — Spring Boot + Angular + JWT security + MySQL 💥 Salon management ERP — full-stack Java Spring + React frontend + role-based access control 💥 Banking microservices system — Spring Cloud + Kafka + Docker + Oracle DB (currently in progress) 💥 Corporate in-house applications — Spring Boot backend + Angular dashboards + reporting modules ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤝 HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Clear communication and regular updates throughout the project - Write clean, maintainable, well-documented code - Follow best practices: SOLID principles, design patterns, code reviews - Available for calls/chat — flexible across time zones - Deliver on time, every time If you are looking for a reliable full-stack developer who can take your project from idea to production, let's talk.

Spring Boot Specialist | 7+ Years of Experience | Microservices | Event-Driven Architecture I’m a seasoned Java Backend Developer with over 7 years of hands-on experience in designing, developing, and deploying scalable RESTful APIs and microservices using Spring Boot and the Java ecosystem. 🛠️ I’ve architected and delivered robust enterprise applications used in banking, finance, and retail — handling everything from database modeling to CI/CD automation and cloud deployments on AWS and on-prem environments. 🔍 What I bring to the table: 💡 End-to-end API development with Spring Boot, JPA, and Hibernate 🔁 Kafka-based event-driven systems for high-volume processing 🧪 Quality-focused development with 90%+ unit test coverage, SonarQube, and Cypress 🚀 CI/CD pipelines with Jenkins, Docker, and Gradle 🛡️ Secure systems using JWT, OAuth2, and role-based access control ☁️ Experience deploying Microservices on AWS EC2, S3, Lambda, and Docker Compose setups 🧪 My tech solutions have powered: ✔️ Chat-based web platforms using WebSockets and STOMP with real-time messaging ✔️ E-commerce backend APIs including product catalog, cart, and checkout modules ✔️ NetSuite integrations for syncing orders, inventory, and CSV file processing ✔️ Tax calculation integration within e-commerce checkout flows ✔️ Advanced cart and discount logic, including promo codes and gift card redemption ✔️ Swagger/OpenAPI documentation for seamless API consumption ✔️ Multi-locale & translation-ready APIs using Google Cloud Translation API ✔️ Gift card system development: both Customer-to-Customer and Business-to-Customer models ✔️ Robust scheduling features for email delivery and status updates Skills : Java Spring Boot Spring Batch Spring Data JPA REST API Development Apache Kafka Microservices Architecture Event-Driven Architecture AWS (EC2, S3, Lambda) Docker & Docker Compose Jenkins CI/CD OAuth2 & JWT PostgreSQL / MySQL / Oracle MongoDB / DynamoDB JUnit 5 & Mockito SonarQube Swagger & Postman Liquibase / Flyway GitLab / Bitbucket / Git System Design Clean Architecture

I specialize in building and optimizing high-performance web applications with a strong focus on backend architecture and modern frontend development. My work is centered around delivering reliable, scalable solutions that handle real-world business needs. With solid experience across Java, PHP, Python, and JavaScript ecosystems, I develop robust APIs, microservices, and full-stack applications. On the frontend, I build fast and responsive interfaces using React and Next.js, ensuring smooth user experiences and maintainable codebases. ✅ What I can do for you: - Develop scalable backend systems (Java Spring, Laravel, Django, FastAPI) - Build modern web apps with React / Next.js - Design and integrate REST & GraphQL APIs - Optimize databases (PostgreSQL, MySQL, MongoDB) - Implement real-time features (WebSockets) - Integrate third-party services (payments, AI, analytics) - Improve performance, scalability, and security 💼 If you need a reliable developer who can handle both backend complexity and frontend delivery let’s connect. 🔑 KEYWORDS: Full Stack Developer, Backend Developer, Java Developer, Spring Boot, PHP Developer, Laravel Developer, Python Developer, Django, FastAPI, Node.js, NestJS, React Developer, Next.js Developer, TypeScript, JavaScript, REST API, GraphQL, Microservices, WebSockets, PostgreSQL, MySQL, MongoDB, Redis, Kafka, RabbitMQ, Docker, AWS, CI/CD, API Integration, Performance Optimization, Scalable Systems, SaaS Development

Profile I am a highly skilled and reliable Java developer looking to work as a software developer at a leading software company. i have Worked on multiple technologies Java, CSS, HTML, React, Javascript , Springboot and Hibernate Hands-on experience in Core Java, RESTful Web Services, Hibernate ,React, Springboot and mainframe technology including jcl , cics, db2, REXX, cobol, SQL. I have 3+ years of industry experience in the application development and Legacy application migration. Experience in all the stages of the Software Development Life Cycle (SDLC) including solution design, requirements analysis,integration testing, development, production rollout and on- going support.

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.

Programming Languages: Java (Core & Advanced), JavaScript, SQL Web Technologies: React, JSP, Servlets, HTML, CSS, JQuery, AJAX Frameworks & Libraries: Spring Boot, Spring MVC, Hibernate, Struts, Redux Databases: PostgreSQL, MySQL, MongoDB, SQLite, IndexDB DevOps & Tools: Jenkins, Git, SVN, Shell Scripts, PowerShell, Maven, Jira, Confluence Cloud & Containerization: Basics of Docker, AWS (EC2, S3) Testing Tools: JUnit, Mockito (Basics) Operating Systems: Windows, Ubuntu, Unix, macOS

Are you looking to build a high-performance software application from scratch? Or do you need a seasoned technical leader who can effortlessly bridge the gap between complex backend architecture and a highly responsive, visual frontend? With over 13 years of enterprise-level experience, I specialize in taking web systems from a blank canvas all the way to a polished, production-ready end product. Technologies & Frameworks Working Experience (Backend + Front-End) Java Spring Boot Micro-Services REST API MySQL DynamoDB MongoDB Angular 4 Tailwind CSS Svelte 5 + SvelteKit D3.js Fabric.js Dynamic SVG Rendering AWS Cloud Infrastructure (EC2 , ECS , Cloudwatch , Cloudformation , S3 , Lambda , Amplify , Route53 , VPC , Load Balancing , ASGs) Git (Code Managment) Development of Data-Rich Interfaces Whether you are launching a new platform from the ground up or modernizing an existing legacy ecosystem, I bring the technical depth, execution speed, and architectural oversight needed to ensure success.

📢 Available for new projects 📢 I am a Senior Backend Developer with over 10 years of commercial experience, focused on building scalable, secure, and high-performance backend systems that power modern web and mobile applications. As a dedicated professional, I work with complex architectures where reliability, performance, and long-term maintainability are critical. I help businesses transform ideas into robust products by applying proven software engineering practices and deep expertise in backend development, cloud infrastructure, and system design. My primary focus is backend development using Node.js, TypeScript, PostgreSQL, and cloud-native technologies. I specialize in designing APIs, microservices, distributed systems, and scalable data architectures capable of supporting growing products and high user loads. Alongside strong backend expertise, I have solid Full Stack experience. This allows me to efficiently collaborate across the entire product lifecycle, from database design and server-side logic to frontend integration and user-facing features. I understand how all layers of an application work together, enabling balanced technical decisions and faster product delivery. Throughout my career, I have worked across Fintech, AI, EdTech, Healthcare, and Retail industries. I’ve contributed to SaaS platforms, enterprise systems, and custom software solutions, consistently maintaining high engineering standards and delivering reliable business outcomes. My Go-To Tools: Backend: Node.js, TypeScript, NestJS, Express.js Databases: PostgreSQL, MongoDB, Redis Cloud & DevOps: AWS, Docker, Kubernetes, CI/CD Architecture: REST APIs, GraphQL, Microservices, Event-Driven Systems Frontend (Full Stack): React, Next.js, JavaScript, TypeScript Design & Collaboration: Figma, Agile, Product Development 💬 I am ready to start work right now — just drop me a message!