Hire the Best Apache OFBiz Developers in Dhaka, BD

Need a backend, full-stack, or AI system that holds up in production, not just on a demo branch? That's what I do. I'm a senior software engineer with 6+ years building web apps, desktop products, data platforms, and enterprise integrations for clients in the US, Canada, and Europe. Clients usually come to me with one of these problems: - "Our API is slow or falls over under load." I profile it, fix the queries and caching, and add retries, idempotency, and monitoring so failures stop reaching your users. - "We need a real product, not a prototype." Secure auth, roles and permissions, billing, background jobs, licensing, automated tests, and CI/CD are part of the build, not a phase two. - "We want AI over our own documents but it keeps answering wrong." I build RAG pipelines with hybrid search, reranking, and measured retrieval quality so answers are traceable. - "Our legacy mainframe code needs to run somewhere modern." I deploy and repair COBOL/CICS/DB2/JCL systems on z/OS and IBM Cloud. WHAT I WORK WITH Backend: .NET Core, Python, FastAPI, Node.js, REST APIs, Clean Architecture, CQRS, Kafka, MassTransit, SignalR, Hangfire Frontend: Angular, React, Next.js, TypeScript, RxJS, NgRx, Tailwind, Material UI Data: PostgreSQL, SQL Server, MongoDB, Redis, Qdrant, pgvector AI: RAG, LangChain, OpenAI, Cohere, hybrid vector + BM25 search, reranking, evaluation Cloud and DevOps: AWS, Azure, IBM Cloud, Docker, GitHub Actions, Azure DevOps, xUnit, pytest Mainframe: z/OS, COBOL, CICS, DB2, VSAM, JCL WHAT I'VE DELIVERED - A multi-tenant vendor risk platform covering supplier onboarding through audits and remediation, with enterprise SSO, granular permissions, Stripe billing, and AWS deployment. - Three years on a freight-forwarding ERP: 1,000+ endpoints, 25+ carrier and accounting integrations, and the full rate-to-shipment lifecycle. - A licensed Windows and macOS desktop product with signed entitlements, offline grace periods, and crash-recovery testing. - A multilingual vehicle-manual chatbot with intent classification and an automated retrieval-evaluation harness. - Technical leadership of a 6-developer team across architecture, estimation, and releases. HOW I WORK I plan carefully before writing code, clarify anything that is unclear, and provide an honest estimate before development begins. I will also tell you early if an approach is risky or unlikely to work. You will receive working increments that you can review throughout the project - not a month of silence followed by unexpected results. I always take ownership of project and meet the deadline I commit to. I have maintained a 100% Job Success Score and delivered more than 2,400 hours of work on Upwork. Some of my project details are in my portfolio and work history below. Send me your requirements, and I will reply with a clear technical approach, the main trade-offs, and a realistic delivery timeline.

🏆 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: 𝗝𝗮𝘃𝗮, 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 - 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 🏆 𝗧𝗼𝗽 Rated & All 𝗙𝗶𝘃𝗲 ⭐️ Review 🏆 𝟗5𝟎+ 𝐇𝐨𝐮𝐫𝐬 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 🎯 𝐀𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐬𝐞𝐞𝐤𝐢𝐧𝐠 𝐟𝐮𝐥𝐥-𝐭𝐢𝐦𝐞 𝐨𝐩𝐩𝐨𝐫𝐭𝐮𝐧𝐢𝐭𝐢𝐞𝐬 Greetings! I’m a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with 5+ years of industrial hands-on experience working on robust, enterprise-level, and SaaS applications. I bring a wealth of skills to develop efficient and scalable applications according to your needs. Bring your web application ideas to life with a skilled Full Stack developer you can trust. 📌 SKILLS 💡 Programming Language: Java, Typescript, JavaScript 💡 Frameworks: Spring Boot, Angular 💡 UI/UX: Material UI, Tailwind CSS, Bootstrap, Reactive Forms, ApexChart, HighChart 💡 APIs & AuthN: RESTful, OAuth2, JWT 💡 Architecture: Microservice, Monolithic 💡 Deployment: Multi-tenant SaaS 💡 DB: PostgreSQL, Oracle, MySQL, MS SQL 💡 ORM: JPA, Hibernate 💡 VCS: Git, GitHub, GitLab 💡 CI/CD: Docker, Jenkins, GitHub Workflow 💡 Tools: Azure DevOps, ZOHO, Redmine 💡 Methodologies: Agile, Scrum I'm open to full-time, long-term collaboration. feel free to reach out, always happy to connect and contribute.

With over 14 years of experience in software engineering, I specialize in designing and delivering robust back-end and full-stack solutions for the fintech, banking, and process mining sectors. I bridge the gap between complex business requirements and highly scalable, cloud-native architecture. Whether you need to migrate legacy systems to microservices, ensure strict financial compliance, or build full-stack platforms from the ground up, I bring the technical depth and leadership required to get it done right the first time. My Core Technical Expertise: Backend & Architecture: Java/J2EE, Spring Boot, Microservices, Spring Security, REST API, Open API, and JPA. (EJB Certified). Cloud & Containerization: AWS Certified (SAA, DVA, CloudOps), Docker, and Kubernetes. AI & Next-Gen Tooling: OpenAI, Spring AI, and MCP (Model Context Protocol). Frontend Integration: ReactJs, ZK UI. Databases & Observability: Oracle, MySQL, Grafana, and Prometheus. Domain Expertise: Process Mining, Core Banking, and Financial integrations. Why Partner With Me? Enterprise-Scale Impact: I have spearheaded mission-critical banking automation for over 1,700 bank branches and modernized massive monolithic systems into scalable microservices. Engineering Leadership: Deep experience in Agile/Scrum environments. I regularly lead teams to deliver complex projects on tight deadlines while maintaining strict code quality. Proven Remote Reliability: I have a decade of experience driving complex projects to completion while collaborating seamlessly with globally distributed teams across Australia, Europe, and South America.

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