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Senior Java Developer | Spring Boot Expert | Backend APIs | Microservices | AWS | PostgreSQL I help businesses build scalable backend systems, enterprise APIs, and cloud-native applications using Java, Spring Boot, Hibernate, Microservices, AWS, PostgreSQL, MongoDB, and Kafka. 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) 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. Whether you need: * A Spring Boot developer for a SaaS platform * A Java backend developer for APIs or integrations * Help with microservices, performance optimization, or legacy modernization * A developer who uses AI-assisted development to deliver faster while maintaining quality I can help. I’ve worked on complex backend systems involving real-time event processing, enterprise integrations, database-heavy workflows, and scalable cloud deployments. If you need a reliable Java / Spring Boot expert who can take ownership and deliver, let’s discuss your project.

Senior Software Engineer having 8+ years of experience with the below skills • 8 years of experience in the design/development of Java/J2EE-based systems and microservice systems. • Strong working knowledge in MVC Architecture and Frameworks – Spring and Spring Boot Framework. • 8+ Years experience in designing and developing Microservices architecture. • 8+ Years experience in Amazon Web Services • 8+ Years experience in Restful web services. • 8+ Years experience in MS-SQL, MONGO, and MYSQL Databases. • Having good working knowledge in Database related Performance engineering activities • 8+ Years experience in Docker Container and Kubernetes. • 8+ Years experience in Kafka Queuing system • Having experience with Designing, Developing, Configuring, and Testing Application environments using Java (Java, Servlets, JSP, JSTL, Java Beans, JDBC, HIBERNATE, Database Mapping, Log4j, HTML).

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.

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.

I am a senior software developer and architect (Total- 21 Yrs.) in Java/J2ee, Python, Rest API, SOAP API, javascript, OAuth, SSO, React, Redux, Angular, Kafka, SpringBoot, JPA, Cloud, AWS, Azure, Private cloud, JBPM, n8n, Oracle BPM, JMS, Hibernate, Struts, Spring Batch, ESB, Base44, Playwright, Selenium, JavaFX, Lisp, Prolog, Weka , OpenAI, Different Web as well as Application Servers, different Operating Systems and DBMS Tools, SQL, NoSQL, PostgreSQL, Mongo, Cassandra, MYSQL, Oracle, Supabase, AI, NLP, OpenAI, agent development, Wordpress, php , CI/CD, Agile and various open-source tools, technologies and frameworks. Some of the domains I have worked on are Banking, finance, Trade, Crypto, HR, Insurance, Learning, NLP, Healthcare, System architecture, Developers Tooling, Document management, AI, DevOps, Cloud, etc. ********************************************************************* Experience Summary: Freelancing || Freelancing || Present Toyow, Mumbai || Solution Architect || Sep 24 to JAN 25 JPMorgan, Mumbai || Vice President || Jun 15 to July 24 and May 10 to Jun 13 || (Around 12 Yrs.) Deloitte, Mumbai || Senior Consultant/Specialist Senior || Jun 13 to Jun 15 HCL Technologies || Onsite/Offshore Dev lead || Sep 06 to May 10 Birla Soft Ltd || Software Engineer || Jan 06 to Sept 06 GIIT, Gr. Noida || Developer || Feb 05 to Oct 05 ************************************************************************* Some of the applications are as below which I have developed/contributed. - Document generation system - Online translation system using NLP - Library management system - HRMS System - Networking system - Tools for Developer and Operate to build and deploy their applications. - Workflow as a service - Workflow Platform for Mutual Fund NAV processing (Fund accounting) - Prediction analysis for SLA miss. - A real time dashboard for fund processing - Messaging Platform supporting MQ, SFTP, REST, Kafka, FIX, - Trade instruction manager - Customer support system for Bank operators - Platform for Tokenization Assets using Blockchain - A social Media application - A insurance management Platform - Applications developed on Base44 - Loan record reports - OCR for healthcare reports and data processing. - ChatBot for Patient enquiry - Coin analysis using AI (openAPI integration)