Hire the Best Enterprise JavaBeans (EJB) Specialists

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)

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).

Java Backend Engineer with 5+ years of experience building scalable, production-grade systems for logistics, food delivery, and enterprise platforms. I specialize in Spring Boot microservices architecture — designing systems that handle high traffic, complex workflows, and real-time data processing. My background in logistics technology means I understand not just the code, but the business operations behind it. What I bring to your project: - Microservices architecture with Spring Boot and Spring Cloud - Event-driven systems using Apache Kafka and RabbitMQ - REST API design, development, and third-party integrations - AWS infrastructure — EC2, RDS, S3, deployment pipelines - Database design and optimization across MySQL, PostgreSQL, and Oracle - JWT-based authentication and Spring Security - Legacy system migrations and monolith-to-microservices transitions - Docker, CI/CD pipelines, and production deployment I have built and maintained systems processing hundreds of thousands of records daily, including a 2.5-year long-term engagement delivering a full-stack logistics and food delivery platform on AWS, earning a 5.0 rating across every review. I do not disappear after handing over code. I ask the right questions before starting, communicate clearly throughout, and flag issues before they become problems. Clients who work with me once tend to come back. 100% Job Success Score across every contract on Upwork. If you need a reliable Java backend engineer who understands logistics, microservices, and production systems — let's talk.

Over the last 10+ years, I’ve architected and scaled SaaS platforms, enterprise systems, and cloud-native applications used by startups and growing businesses across healthcare, fintech, logistics, travel, AI, and real estate industries. I specialize in Java, Spring Boot, Microservices, AWS, PostgreSQL, MongoDB, Kubernetes, and scalable backend architecture for high-performance SaaS platforms. Worked on platforms handling real-time workflows, payment systems, enterprise reporting, AI integrations, booking engines, analytics systems, and multi-tenant SaaS infrastructure. I’ve developed enterprise-grade platforms for healthcare, fintech, e-commerce, and real-time applications, focusing on scalability, security, and long-term maintainability. My expertise includes: ✔ High-performance REST APIs ✔ Microservices architecture ✔ Cloud-native AWS deployments ✔ Authentication & payment systems ✔ Enterprise integrations ✔ Performance optimization Whether you need to modernize a legacy Java application, build a backend from scratch, or scale an existing SaaS platform, I can help architect and deliver reliable production-ready systems. My Core Competencies 1. Java Development: - Core Java: In-depth knowledge of Java’s features, collections, concurrency, and multi-threading - Spring Framework: Expertise in Spring Boot, Spring MVC, Spring Security - Microservices: Designing and implementing microservices architecture with Spring Cloud - API Development: RESTful APIs with JWT, OAuth, and GraphQL integration 2. Mobile App Development: - Android Development: Skilled in developing native Android apps using Java and Kotlin - App Lifecycle: From UI/UX design to API integration and deployment 3. Database & Back-End: - Database Expertise: Proficient in MySQL, PostgreSQL, and MongoDB for secure, scalable data management - ORM: Working with Hibernate for object-relational mapping - Server-Side Scripting: Building efficient backends with Java and Spring. 4. Deployment & Cloud: - Cloud Deployment: Expertise in deploying Java-based applications on AWS, Azure, and Google Cloud - Containerization: Proficient with Docker for application containerization and management 5. Security & Performance: - Application Security: Implementing secure systems with Spring Security, OAuth, and data encryption - Performance Tuning: Optimizing application speed, database queries, and server-side performance Industries I Serve - E-Commerce: Custom checkout systems, payment gateway integration, and scalable shopping carts - Healthcare: HIPAA-compliant mobile apps and backend systems for patient management - Finance: Developing secure and efficient transaction systems, real-time data processing - Education: Learning platforms and mobile apps to enhance educational experiences - Travel & Hospitality: Building booking engines, itinerary planners, and travel apps - Real Estate: Custom property listings, user-friendly property search apps Why Work With Me? - End-to-End Solutions: From ideation and development to testing and deployment - Scalable & Secure Architecture: Applications that grow with your business - Cross-Platform Experience: Expertise in both web and mobile development - Agile & Transparent Communication: Ensuring a smooth collaboration throughout the project What I Can Help You Build - SaaS backends - REST APIs - Microservices architecture - Authentication systems - Payment integrations - Cloud deployment pipelines - Enterprise dashboards If you need a reliable backend engineer to build scalable APIs, SaaS platforms, or cloud-native Java applications, let’s discuss your project. Keywords: Spring Boot, Java Backend, SaaS Development, REST API, Microservices, AWS, Scalable Applications, SaaS Architecture, Platform Engineering, Distributed Systems, Event-Driven Architecture, Cloud-Native Development, Enterprise APIs, Multi-Tenant SaaS, AI Integrations, Kubernetes, Docker, Kafka, DevOps, System Design, Scalable Infrastructure, High Availability Systems, Fintech, Healthcare Platforms, Booking Engines, Real-Time Systems

💡 I help you fix backend issues fast, stabilize live systems, and build reliable APIs that work under real-world load. 💡 I also work on Java + Angular/TypeScript full-stack bugs, especially issues involving existing codebases, state handling, API flows, auth, and cross-platform app behavior. 💡 I fix rough MVPs and broken code produced by Claude, Codex, Cursor, and other AI agents: fragile flows, messy handoffs, weak auth, API bugs, browser-extension issues, and code that works in a demo but breaks in real use. 💡 I can also build focused MVPs/prototypes in hours when the scope is clear, then clean them up so they are maintainable. With 15+ years of hands-on experience, I’ve worked across enterprise systems, production debugging, high-availability applications, and government-grade Java/Spring Boot platforms. I’m not just building features; I’m usually the person called when something is already live, complex, slow, or broken. What I can do for you: * Debug and fix backend issues quickly (APIs, async flows, database problems) * Fix frontend issues in Angular, TypeScript and JavaScript (UI bugs, API integration issues, state handling) * Fix AI-generated / Claude / Codex / Cursor code before handoff * Clean up fragile MVPs and turn them into maintainable software * Debug browser extension issues and extension-to-backend connection problems * Optimize slow queries and improve performance (MySQL, SQL Server, Oracle) * Build and improve REST APIs (Java Spring Boot, Node.js) * Integrate third-party APIs (OAuth, OIDC, secure integrations) * Stabilize production systems and reduce recurring issues * Build focused MVPs and internal tools using Java, Node.js, Angular, APIs, and AI-assisted development * Automate workflows using scripts and AI agents where it makes sense * Set up and troubleshoot Linux-based environments (dev tools, services, remote access) * Configure browser-based dev environments (code-server / VS Code in browser) * Secure access using Cloudflare Tunnel or similar approaches (no port forwarding / VPN) * Fix and enhance C# desktop applications, including UI controls and small DevExpress tasks * I also handle structured document and data transformation work, including XML/schema-based outputs, PDF/Word-to-structured-data conversion, validation-driven formatting, and automation around repetitive document workflows. My approach is practical: understand the target schema, convert carefully, validate the output, and deliver clean files that are easy to review and maintain. Tech I work with regularly: * Backend: Java, Spring Boot, Node.js, Python (automation/scripts) * Frontend: Angular, TypeScript, JavaScript, HTML/CSS * Databases: MySQL, SQL Server, Oracle, Redis * APIs: REST, SOAP, API integrations, authentication flows * Reporting: JasperReports / Jaspersoft Experience highlights: * 6+ years at Upland Software on PowerSteering PPM, delivering 20+ product features and fixing 100+ defects in a mature enterprise product * Lead Java/full-stack work on Dubai Government projects, including DubaiNow integrations and the Dubai Police Rain and Waterlogging Forecast System * Architected or contributed to 20+ telecom and financial transaction systems before moving fully into remote enterprise product work * Strong focus on debugging, performance tuning, and understanding complex existing systems quickly I’m not here just to write code. I focus on solving problems, especially in systems that are already live and need careful handling. If your system has an issue, your AI-built MVP needs cleanup, or you need someone who can jump in, understand it fast, and fix it properly, I can help.