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I am a passionate programmer. I'm an expert Java Full stack developer with 10+ years of professional experience and focused on OOP technologies. I have an extensive background in large-scale web based systems. Expertise in full Software Development Life Cycle (SDLC) including Software Architecture, Object Oriented programming, Data structure & Algorithm, Database Design, J2EE Security, Encryption, Javascript. Worked on various E-commerce sites, Banking domain. My Skill set: Backend: --JAVASE(JavaSwing,JavaFx) -- Java EE (JSP, JSF, Servlet, EJB, JMS, JDBC, JPA etc) -- Spring (MVC, IoC, security,Cloud, boot, data, and transaction) -- Hibernate -- Web services (REST/SOAP) Frontend: -- HTML5, Javascript, Jquery, DHTMLX -- ExtJs -- JQXGrid -- Angular 4 -- Angular 4 upper Databases: -- MySQL, DB2, SQL Server, Oracle -- MongoDB Build tools: -- Maven Version Controls: -- Git, SVN Reporting Tools: -- Itext, Apache POI,Swagger,Jasper Cloud: -- Amazon AWS (EC2, S3) Servers: -- Tomcat -- Wildfly Code Generator -- Jhipster Other Technologies -- Hazelcast -- Aerospike -- Solr -- Lucene -- Artemis(Active MQ) -- LDAP I have worked in team size from 10 to 20 developers so far. To establish further healthy relationship allow me to provide satisfying work with meeting your expectations successfully and has the potential to maintain a long term relationship. Clear code with suitable commenting. Good communication to fulfill your requirements.I am sure I can help you building effective solutions for your business and provide the best quality support of them.

Java & Spring Boot Architect | AI-Powered Backend Systems | 14+ Years Experience I am a Java & Spring Boot architect with 14+ years of hands-on experience building production-grade enterprise systems — from core banking platforms to AI-integrated microservices. I hold a BSc in Computer Science & Technology and now work as a dedicated full-time freelancer on Upwork, bringing the same rigour I applied in large fintech institutions directly to client projects. My core expertise spans Spring Boot, Spring Framework, and microservices architecture, with deep practical knowledge of SSO & Keycloak, Docker, DevOps pipelines, and GitLab CI/CD. I design systems that are secure, observable, and built to scale — whether that means integrating Kafka for event-driven flows, Flowable BPMN for workflow automation, or AWS for cloud infrastructure. Over the past year I have been heavily invested in the AI/LLM frontier: building Spring AI applications, wiring up MCP (Model Context Protocol) servers, running local models via Ollama, and implementing advanced patterns like tool calling, RAG pipelines, and AI agent workflows. I see AI not as a separate layer but as a first-class citizen inside enterprise Java backends. If you need someone who understands both the old-school reliability of enterprise Java and the new possibilities of AI-augmented architecture — let's talk. CORE STACK: Java · Spring Boot · Spring Framework · Microservices · REST API · Keycloak/SSO · Docker · GitLab CI/CD · DevOps · Kafka · Flowable BPMN · Oracle · PostgreSQL · AWS · Angular AI & EMERGING TECH: Spring AI · MCP · Ollama · Tool Calling · AI Agents · RAG Pipelines · pgvector · LLM Integration · OpenAI API · Prompt Engineering DOMAINS: Banking & Fintech · SWIFT/ISO 8583 · AML/CFT Compliance · NPSB/RTGS · ATM Switch · eKYC · Healthcare/EMR · Document Management

13+ years experienced in Java/J2EE | AWS Certified(SAA , DVA, CloudOps) | Java Professional Certified | Docker | Kubernetes | Rest API | Spring boot | Spring AI | Microservices| Spring Security | JPA | Oracle | Mysql | Process Mining | MCP | OpenAI | OPENAPI I React Js| ZK UI | Grafana | Prometheus | EJB Certified | 7 years in Financial or Banking application | Agile/Scrum | Lead Team.

With 15+ years of experience in extensive list of technologies, I am able to provide you with high quality, sophisticated, robust solutions that are well tested, efficient, accurate. I shine at diving into your existing codebase, find the source of issues, and resolve them without breaking another thing. If you have old legacy code, or a vibe coded program that is not working, I can fix them up for you to clean and conscious code. Need to automate? Got your back. Data processing, parsing complex PDF? Sure thing! You need it, if there is solution for it, I can get it done. Technologies I am currently working with: Rust, Python, Axum, SQLAlchemy, FastAPI, Django, PostgreSQL, SQLite, HTMX, ReactJS, Tailwindcss, RunPod, AI/LLM I am a passionate software engineer who enjoys challenges, and finding solutions. I have extensive experience of diving into existing code, finding issues, and resolve them. As a hardworking, resourceful engineer who also loves automating things, that usually saves a lot of time, I can provide the best service for the most reasonable costing. Besides developing data mining applications, automation tools, Websites, I have personal interest in Open Source projects. Here's a list of, but not limited to, responsibilities I have successfully fulfilled: ◾️ Desktop application ◾️ Refactoring ◾️ Prompt Engineering (Local LLM) ◾️ Machine Learning ◾️ Web development ◾️ Web Scrapers ◾️ Email processing ◾️ Distributed applications ◾️ ETL ◾️ Automation ◾️ Server configuration and deployments ◾️ Bug fixing and code improvements ◾️ High Performance computing Let's get in touch.

OCJP Certified Java Architect | Spring Boot | Microservices | AWS | Kafka | Camunda | 13+ Years Experience With 13+ years of professional experience in designing, developing, and deploying enterprise-grade applications, I help businesses build scalable, secure, and high-performance cloud-native solutions. My expertise spans Java, Spring Boot, Microservices Architecture, AWS Cloud, Kafka, Redis, Docker, Kubernetes, CI/CD, OAuth2, Keycloak, JWT, and Camunda BPM. Key Highlights: ✔ OCJP Certified Java Professional ✔ 12+ Years of Software Development Experience ✔ Microservices & Cloud-Native Architecture Specialist ✔ Banking & FinTech Domain Expertise ✔ RESTful APIs, Event-Driven Systems, and Distributed Architecture ✔ AWS Cloud Deployment & DevOps Automation ✔ Security Implementation with OAuth2, JWT, Keycloak, LDAP, and Okta Recent Accomplishments: ✅ Designed and implemented cloud-native microservices using Java, Spring Boot, Spring Cloud, Docker, and Kubernetes. ✅ Built FinTech and Banking solutions integrating payment gateways and remittance platforms, including Stripe, RIA, and Instant Cash Exchange House APIs. ✅ Developed high-performance event-driven architectures using Kafka and Redis for real-time processing and scalability. ✅ Automated deployment pipelines using Jenkins, Docker, Kubernetes, SonarQube, and Git-based CI/CD workflows. ✅ Implemented workflow orchestration and business process automation using Camunda BPM. AI-Assisted Development: I effectively leverage AI tools such as ChatGPT and GitHub Copilot to accelerate development productivity by 60–80% through: • Business rule analysis and API design • Schema and ORM modeling • Rapid endpoint generation • Code completion and refactoring • Automated code reviews and quality improvements • Technical documentation generation Core Technologies: • Java, Spring Boot, Spring Framework, Spring Cloud, Hibernate, JPA, Camunda, GraphQL, WebSockets • Kafka, RabbitMQ, Redis, Docker, Kubernetes • MySQL, Oracle, PostgreSQL, MongoDB, Elasticsearch • AWS (EC2, ECS, RDS, S3, IAM, SQS) • OAuth2, JWT, Keycloak, LDAP, Okta, Spring Security • React, Angular, TypeScript, JavaScript • Jenkins, Git, Maven, SonarQube, Jira I am passionate about building reliable, scalable, and secure enterprise solutions that deliver measurable business value. Let's discuss how I can help your team accelerate development, modernize architecture, and successfully deliver high-quality software solutions.

Hello! I've been a Software Engineer and Developer for more than five years. I create fast, secure, and user-friendly custom websites and web apps. I am very passionate about software engineering. I believe logic is more important than knowing a specific language. I am fully synced and experienced in PHP Laravel, Java Spring Boot, DotNet/ .Net (C#) for backend and React, NextJs, Angular , Vuejs, for frontend and I am open to explore any other technology at your need. I make sure that everything functions properly on all devices and always write clean code. I can assist you with bug fixing and deployments and automations. I have recently participated in beta testing for pre-launched app. 💻 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ⭐𝐁𝐚𝐜𝐤𝐞𝐧𝐝: 𝖫𝖺𝗋𝖺𝗏𝖾𝗅, .Net, Java Springboot ⭐𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍, 𝖳𝗒𝗉𝖾𝖲𝖼𝗋𝗂𝗉𝗍, 𝖧𝖳𝖬𝖫𝟧, 𝖢𝖲𝖲/𝖲𝖠𝖲𝖲, Tailwind, Vue.js, Nextjs, Angular, React ⭐𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞: 𝖬𝗒𝖲𝖰𝖫, 𝖯𝗈𝗌𝗍𝗀𝗋𝖾𝖲𝖰𝖫, Oracle PLSql, 𝖬𝗈𝗇𝗀𝗈𝖣𝖡, 𝖥𝗂𝗋𝖾𝖻𝖺𝗌𝖾 ⭐𝐀𝐏𝐈𝐬: 𝖱𝖤𝖲𝖳𝖿𝗎𝗅 ⭐𝐃𝐞𝐯𝐎𝐩𝐬: 𝖠𝖶𝖲, Azure, 𝖥𝗂𝗋𝖾𝖻𝖺𝗌𝖾, 𝖵𝖾𝗋𝖼𝖾𝗅 ⭐𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐓𝐨𝐨𝐥𝐬: 𝖦𝗂𝗍𝖧𝗎𝖻, 𝖦𝗂𝗍𝖫𝖺𝖡, 𝖡𝗂𝗍𝖻𝗎𝖼𝗄𝖾𝗍, 𝖵𝖲 𝖢𝗈𝖽𝖾, Visual Studio, IntelliJ ⭐𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: 𝖩𝖨𝖱𝖠, Slack ⭐𝐔𝐈/𝐔𝐗: 𝖥𝗂𝗀𝗆𝖺, Axure Prototype, Miro ⭐𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞𝐝 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 ⭐𝐏𝐚𝐲𝐦𝐞𝐧𝐭 𝐆𝐚𝐭𝐞𝐰𝐚𝐲𝐬: 𝖲𝗍𝗋𝗂𝗉𝖾, 𝖱𝖺𝗓𝗈𝗋𝖯𝖺𝗒, Square, 𝖠𝗉𝗉𝗅𝖾 𝖯𝖺𝗒, Bkash, Sslcommerz, Worldline-solutions, Cards ⭐𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐀𝐏𝐈𝐬: 𝖳𝗐𝗂𝗅𝗂𝗈, 𝖲𝖾𝗇𝖽𝖦𝗋𝗂𝖽, Aws WebSocket Services, Pusherjs 🌟 Laravel & Full Stack Services Include: ✅ Custom Laravel Web Development ✅ RESTful API & Third-Party Integration (Stripe, PayPal, Twilio, SendGrid) ✅ Full Stack App Development (Laravel + Vue.js / React.js) (SpringBoot/.Net + React/Nextjs/Angular) ✅ SaaS Platform Development ✅ Admin Dashboard, CRM, and CMS ✅ E-commerce Store Development ✅ Website Speed Optimization & Performance Tuning ✅ Database Design (MySQL, MS Sql, PostGreSql, Oracle PL-Sql, MongoDB, Firebase) ✅ Version Control (Git, GitHub, Bitbucket) ✅ Server Setup (AWS, Azure, Hostinger, GoDaddy,, cPanel) 🌟 Why Clients Hire Me 🔒 Clean, secure, and well-documented code 🚀 Fast delivery without compromising quality 📈 Scalable architecture for future growth 🧠 Proactive problem-solver and good communicator 🤝 Long-term collaboration mindset