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Hi I'm Oracle Certified Java Programmer(OCJP). Now i'm working on Java Programmer. I working with IHE HL7 Profile for Hospital Management System at Medical System Co. Ltd. I have experience various Web project with JPS, JSF, Spring3 Framework With Hibernate, JPA, Apache Camel, Git, bitbucket. I have good working experience in Java Integration. CLAD GENIUS SETUP. and CLAD GENIUS TRAINING CONTACT For Fully Setup Auto-posting Your CLAD GENIUS Via Remote. **Always Provide Quality Work.

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

I help businesses stabilize, scale, and extend existing applications without costly rewrites. With 15+ years of experience, I specialize in Java (Spring Boot) and Laravel-based systems, focusing on bug fixing, performance optimization, API development, and long-term maintenance for SaaS and enterprise applications. If your application is slow, unstable, hard to maintain, or needs new features added safely — I can help. What Can I Help You With - Fixing critical bugs and production issues - Improving performance and database efficiency - REST API development and third-party integrations - Refactoring legacy Java / PHP applications - Secure authentication and role-based access - Ongoing maintenance and technical support Why Clients Trust Me - 15+ years building and maintaining real-world systems - $70K+ earned and 5,000+ hours on Upwork - Long-term contracts (1,000+ hours) with US & UK clients - Strong focus on clean, maintainable, and scalable code Technical Stack - Backend: Java, Spring Boot, Spring Security, Hibernate, JPA, PHP, Laravel - Frontend: Angular, React - Databases: MySQL, SQL Server - Tools: REST APIs, JUnit, Mockito, Git

I’m an Oracle Certified Professional (OCP) with 12+ years of experience building and leading application delivery using Oracle Database, Oracle APEX, PL/SQL, and Java. I help clients design, build, optimize, and integrate business-critical systems—especially in Banking/FinTech, ERP, and Budgeting/Forecasting. What I can do for you: • Oracle APEX application development (Forms, Reports, Dashboards, Interactive Grid, Validations, Dynamic Forms, Dynamic Content, Workflow Management, Task Management, Integration with External Service) • PL/SQL & SQL development + performance tuning (slow pages/reports, query optimization, indexing) • ORDS / RESTful services (build and consume REST APIs; integrate with external systems) • System integrations via REST/SOAP APIs • Reporting: Jasper Reports, Oracle Reports, BI Publisher • Server & deployment setup: ORDS with Tomcat, and Apache/Nginx load balancing • Integration experience includes: Google Maps integration in APEX, Open Street Map Integration, Biometric authentication integration in APEX, Camera Integration I work in a structured way: scope → quick prototype → iteration → delivery + handover. If you already have an APEX app, share the page/report and issue (error/slow/wrong output)—I’ll propose the best fix plan quickly.

👋 Hi, I’m Hasan — Senior Software Engineer & Full-Stack Developer with 5+ years of experience building secure, scalable, and high-performance systems for healthcare, finance, and retail sectors. I don’t just code — I deliver enterprise-grade solutions that automate workflows, cut costs, and drive efficiency. 💡 What I Do Best 🔐 Secure Backend Development → Java, Node.js, Express.js, REST APIs, Authentication & Authorization 🗄️ Database Design & Optimization → MSSQL, SQL Server, performance tuning for high-volume systems 🏥 ERP Systems & Automation → Full-cycle ERP modules for healthcare, finance, and trading 📊 Reporting & Data Processing → Crystal Reports, automated PDF generation, Outlook/JACOB email integration 📱 Cross-Platform Apps → Flutter + Firebase (OCR & data sync solutions) 🌟 Key Achievements ⚙️ Core Contributor to the ZAB ERP Framework, powering 200+ reports across 20+ industries 💳 Automated BRAC Bank’s Financial Reconciliation with secure Express.js APIs using RSA + SHA-256 🚑 Hospital ERP (United Hospital) → Cut report generation time from 10 minutes → under 1 minute with multithreading + Crystal Reports 🔄 Data Sync Automation → Designed robust solutions to handle 10K+ daily transactions with accuracy & speed 📱 Product Scanner Mobile App (R&D) → Built Flutter OCR app with Firebase integration for retail product digitization 🔧 Tech Stack at a Glance ☕ Java, Java Servlets, JSP ⚡ Node.js, Express.js 💾 SQL Server, Database Optimization 🎨 React, jQuery, UI Components 📑 Crystal Reports, Report Automation 📱 Flutter, Firebase, ML Kit OCR 🔒 RSA/SHA-256 Secure APIs 🤝 Why Clients Hire Me ✔️ 5+ years delivering enterprise-grade solutions that actually solve business problems ✔️ Strong mix of backend architecture, API integrations, and database engineering ✔️ Experience across healthcare, banking, trading, and retail domains ✔️ Focused on security, scalability, and performance — not just “getting it to work” ✔️ Clear communicator, reliable, and results-driven 📩 Let’s Work Together Whether you need: 🔹 A robust ERP module 🔹 A secure API integration 🔹 Database optimization 🔹 Or a custom backend workflow 👉 I’ll bring deep technical expertise + business-focused solutions to your project. Let’s build something impactful 🚀.

Hello, I’m Abu Siddique, a Full Stack Web Developer with 4+ years of experience, specializing in building secure, scalable, and production-ready web applications. I help startups and businesses turn complex ideas into clean, reliable web platforms—with strong backend architecture, modern frontend UX, and long-term scalability in mind. I have hands-on experience delivering: Business & SaaS platforms Healthcare / Clinic / Consultation systems E-commerce & custom admin panels Secure REST APIs and integrations 🚀 Core Expertise Frontend Next.js / React.js HTML5, CSS3, JavaScript Responsive, performance-optimized UI Backend Java Spring Boot, Spring MVC, Supabase REST API design & integrations Secure authentication & role-based access Databases PostgreSQL, MySQL, MongoDB CMS & E-commerce WordPress, WooCommerce Shopify custom admin & integrations Cloud & DevOps AWS, DigitalOcean Git, GitHub, Bitbucket 🎯 What I Deliver Full-stack web applications (Frontend + Backend) Secure REST APIs & third-party integrations Business & healthcare platforms E-commerce websites with custom logic Clean, maintainable, well-documented code I focus on clarity, performance, and long-term maintainability—not quick hacks. 🏥 Industry Experience I’ve worked on solutions for: Hospitals, clinics & consultation platforms Business & audit services Education & training portals E-commerce & online stores Custom internal systems for teams 🧠 How I Work Clear scope & realistic timelines Clean separation of frontend & backend Security-first mindset Honest communication (no over-promising) If you’re looking for a reliable developer who understands both business needs and technical depth, let’s connect.