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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.

💻 Senior Java Developer | Spring Boot | Cloud | E-commerce | Automation | ETL | Space Systems | 10+ Yrs 🚀 10+ years of experience building scalable, cloud-native applications and automation systems using Java (8–21), Spring Boot, and modern DevOps practices. ✅ Why Choose Me? Enterprise Java Expertise: Deep knowledge in Java SE/EE, Spring Boot, Spring Cloud, JPA/Hibernate. Space Software Development: 3 years in mission-critical ground segment systems for satellite operations. E-commerce Automation: Integrated with Amazon SP-API, eBay, Etsy, Walmart, Shopify, and more. Cloud & DevOps: AWS, GCP, DigitalOcean, CI/CD (GitHub Actions, Jenkins, GitLab). ETL & API Integration: n8n, Make.com, custom data pipelines with FTP, SOAP, HTTP. Database Proficiency: PostgreSQL, MongoDB, Oracle, Couchbase, Cassandra, Elasticsearch. UI Skills: HTML, CSS, JavaScript, Bootstrap for clean, responsive interfaces. 🔧 Tech Stack Languages: Java, SQL, JavaScript Frameworks: Spring Boot, Spring Cloud, Spring Batch Cloud: AWS, GCP, DigitalOcean Databases: PostgreSQL, MongoDB, MySQL, Oracle, Cassandra DevOps: Docker, Jenkins, GitHub/GitLab CI/CD APIs/Automation: Amazon SP-API, Shopify, DHL, n8n, Make.com

Slow backend? Unclear architecture? Need a complete web application built and deployed — without managing three different contractors? I build production-ready Java + Spring Boot backends paired with clean React frontends, deployed on AWS or GCP. Six completed Upwork contracts, three cloud certifications (AWS Solutions Architect, Oracle Java SE, GCP Associate), and a consistent track record of shipping systems that work on day one and stay maintainable at month twelve. What I deliver end-to-end: — Spring Boot REST APIs with OpenAPI documentation and proper error handling — Secure authentication: JWT, OAuth 2.0, role-based access control — PostgreSQL / MySQL database design with clean data modeling — React dashboards, admin panels, and workflow UIs wired directly to your APIs — Docker containers deployed to AWS (EC2, ECS, RDS) or GCP — CI/CD pipelines so your team ships without manual steps What makes this engagement different: I write documentation. I design APIs before I build them. I flag problems before they become your emergency. And I don't hand off code — I hand off a system you can actually operate. Best fit for: - SaaS startups that need a reliable backend with a functional frontend in 2–6 weeks - Teams replacing spreadsheets or manual workflows with internal tools and admin panels - Technical founders who want one accountable engineer, not a fragmented team My specialty is projects where the backend has to be correct — auth flows, data integrity, business logic, third-party integrations. The frontend needs to be functional and maintainable. If you need pixel-perfect animations, I'll refer you to the right person and stay focused on what I'm actually great at. Three certifications. Six contracts. Zero missed deadlines. 📩 Send a brief on your project — I respond within 4 hours (9 AM–9 PM IST). I offer a free 20-minute scoping call for projects that are a clear fit.

I am a Java/J2EE Developer with 7+ years of experience in building scalable and secure web applications using object-oriented and client–server technologies. I specialize in backend development, REST APIs, and enterprise-grade solutions. 🚀Core Technologies Java, Core Java, Java Collections Framework, Spring Framework, Spring Boot, Spring MVC, Java Servlet API, Java Persistence API (JPA) 💻 Web & Application Development Web Application Development, Application Testing & Maintenance, RESTful API Development, Microservice-ready Architecture 🛠️ Low-Code Platforms Case360 – Car Damage Assessment Application Appworks (LowCodeGuide) – BSI Enterprise Application 📂 Tools & Development Practices Git, GitHub, Version Control, Agile Software Development, Jira 🏆 Projects & Achievements CRM Application using Spring Boot APIs ERP System for Construction Sites (Project-based Spring Boot solution) Car Damage Assessment Application (Case360) BSI Application (Appworks Low-Code Platform) Academic Project: Organization Management System for student data, assignments, and class records I focus on delivering clean, maintainable, and business-oriented solutions with strong attention to performance and scalability.

If you’re looking for a Java engineer who builds production-ready systems—not just code, you’re in the right place. I’m a Software Engineer with strong expertise in Java-based full-stack development, specializing in Spring Boot, Hibernate, and Microservices architecture. I help businesses design, develop, and deploy scalable, secure, and high-performance applications that work reliably in real-world environments. HOW I HELP CLIENTS ✅ Build Java-based backend systems and RESTful APIs ✅ Design scalable microservices architectures ✅ Develop database-driven applications with clean data models ✅ Optimize performance, reliability, and maintainability ✅ Containerize and deploy applications using Docker and CI/CD pipelines ✅ Integrate AI-driven features such as Speech-to-Text (STT) and Text-to-Speech (TTS) JAVA-FOCUSED TECHNICAL EXPERTISE Backend & Application Development: • Java, Core Java, OOP • Spring Framework, Spring Boot, Hibernate, JPA • RESTful APIs, MVC Architecture • Microservices design • Swagger for API documentation Databases: • MySQL, MongoDB, Oracle, Oracle RAC, etc. • SQL optimization and high-availability systems • Apache Kafka for messaging and event-driven systems DevOps & Cloud: • Docker, Jenkins, GitHub Actions • CI/CD pipelines, AWS, Linux • Tomcat, NGINX • Monitoring: Prometheus, Grafana Additional Skills: • Node.js, PHP, Python (API development, automation), etc. • AI & NLP integrations • Speech-to-Text (STT) & Text-to-Speech (TTS) • Frontend: HTML, CSS, JavaScript, JSP, Bootstrap, etc. Methodologies & Soft Skills: • Agile / Scrum workflows • Strong problem-solving skills and attention to detail WHY CLIENTS CHOOSE ME ✅ Strong experience with production-grade Java systems ✅ End-to-end ownership from development to deployment and support ✅ Clean, maintainable, and efficient code ✅ DevOps-aware, production-focused mindset ✅ Clear communication and dependable delivery ✅ Quick understanding of existing Java codebases I don’t over-engineer solutions — I build practical Java systems that scale and last. LET’S WORK TOGETHER If you need a Java / Spring Boot / Microservices engineer with Docker, AWS, and real production experience, I’d be happy to help. 📩 Send me a message with your requirements, and let’s build something reliable.

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.