I'm a programmer/software engineer who's had some prior experience in web development and tutoring. No matter how daunting a task I always try to put my best foot forward and accomplish it. I took a technical course in programming in high school and have invested a lot of my own time in it since then. I also work as a tutor and I enjoy helping others learn, having previously worked at Kumon alongside freelance tutoring. I'm largely self-taught, and I often try to learn as much as I can to grow and get better at what I do. -Experienced in C/C++ including make a real-time messaging app where users can message one another from anywhere, and a fighting game -Experienced in Javascript and web development. I hold an MTA certification in JavaScript and I've also completed and have been certified by FreeCodeCamp in it. I've made several websites ranging from a local non profit to my high school, I also maintain my own website, usually with games, general projects and other things that interest me -Java, I hold an ITS certification in it and have made a sorting visualizer using it. -Experienced in Python, I've made a data visualizer with it and engaged in scientific computing using it Whatever project I'm handed, I'll try to get it done to the best of my ability and as short a time I can. I'm extremely receptive to criticism and I'll make any adjustments necessary because what's perfect the first time around? I'll both ask and answer questions to make sure a project comes out as good as can be, and as accurate to the vision that it started with.

I’m a Full-Stack Developer specializing in Java, Spring Boot, React, Angular, and AWS Cloud. I build fast, scalable, and secure web applications and microservices that help businesses grow efficiently. With over 4 years of professional experience, I’ve delivered solutions in areas such as RESTful API development, cloud-native architectures, and enterprise web systems — transforming client ideas into reliable, high-performing applications. 💡 What I Can Do for You Develop robust backend systems using Java (Spring Boot, JPA, Hibernate, REST APIs) Build modern, responsive frontends with React or Angular Design and deploy microservices on AWS (ECS, EKS, S3, CloudFormation) Containerize applications with Docker and orchestrate with Kubernetes Set up CI/CD pipelines using Jenkins, GitHub Actions, or GitLab CI Optimize performance, monitor services with Grafana, Prometheus, and Kibana Collaborate in Agile/Scrum environments for fast, quality delivery 🧰 Tech Stack Java (8/11/17), Spring Boot, Spring Security, JPA/Hibernate, React, Angular, TypeScript, PostgreSQL, MongoDB, AWS (ECS, EKS, S3), Docker, Kubernetes, Jenkins, Git, Prometheus, Grafana. 🌍 Why Clients Hire Me I combine technical excellence with business understanding. I ensure clear communication, on-time delivery, and well-documented code. I don’t just write code — I solve problems that help your business scale. 📬 Let’s Build Something Amazing Together! If you’re looking for a reliable Full-Stack Developer to design, build, or scale your application — I’d love to help you achieve it.

Hello! I'm Jalal, a passionate and seasoned Android App Developer with over 5 years of hands-on experience in creating innovative, user-centric mobile applications. My expertise lies in leveraging Kotlin and Java to build robust, scalable, and efficient apps that not only meet but exceed client expectations. Comprehensive Experience - Developed and deployed 10+ Android apps across various domains including e-commerce, finance, healthcare, entertainment and phone diagnostics. Technical Proficiency - Expert in Kotlin and Java, with extensive knowledge of Android SDK, Jetpack components, and modern architectural patterns like MVP, MVC, MVVM and MVI. UI/UX Focused - Strong eye for design and usability, ensuring that each app delivers an intuitive and engaging user experience. API Integration - Proficient in RESTful API and third-party library integration (Retrofit, Glide, Firebase, Google Map, Mapbox, FFMPEG and other libraries). Performance Optimization - Skilled in optimizing app performance and memory usage, ensuring smooth and fast user interactions. Quality Assurance - Committed to maintaining high code quality through rigorous testing and adherence to best practices. What I Can Offer Custom Android App Development: Tailored solutions to bring your unique app ideas to life, from concept to deployment. Maintenance & Upgrades: Ongoing support to keep your app updated with the latest features and improvements. Code Review & Optimization: Detailed analysis and enhancement of existing codebases to boost performance and maintainability. Bug Fixing & Troubleshooting: Quick and effective resolution of any issues to ensure your app runs flawlessly. Notable Projects: E-commerce Platform: Developed a feature-rich shopping app with real-time inventory updates, secure payment gateway integration, and personalized recommendations. Project names are Vital Sales Pro, Sufi Sales Pro. Healthcare App: Created a comprehensive health tracking application that includes appointment scheduling, medication reminders, and telehealth services. Project names are AlphaCare, Inteli-Health, Family Doc. Diagnostics App: Created a robust, smart and user friendly phone diagnostic app. Which helps the client to diagnose the mobile phone in minutes and ensure that all the components like Speakers, Microphones, Sensors, Storage and other functionalities are working perfectly. Project names are PhoneCheck, DeviceWork & MoboCheck. Core Skills - My core skill set includes Kotlin, Java, Android SDK, Jetpack Compose, MVP, MVC, MVVM, MVI, RESTful APIs, Firebase, Retrofit, Glide, Dagger2, Hilt, UI/UX Design, Performance Optimization, Quality Assurance. Availability: I am available for Full-Time, Part-Time and Project Based. Let's Connect: I am dedicated to helping you achieve your app development goals. Let's discuss how I can bring your project to life with precision and excellence. Feel free to reach out, and let's get started on your next successful Android app!

I am fullstack developer experienced both frontend(html, css, javascript, typescript,Angular framework) and backend (mostly written in java using Spring stack).

👋 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 🚀.

𝐈 𝐡𝐞𝐥𝐩 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬, 𝐒𝐌𝐄𝐬, 𝐚𝐧𝐝 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐬𝐞𝐜𝐮𝐫𝐞, 𝐚𝐧𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐬𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. With 7+ years of experience and a background working with enterprise organizations, including Cloudera and DigiCert, I specialize in designing and developing high-performance backend systems, Saas platforms, modern web applications, and workflow-driven business platforms. 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐁𝐮𝐢𝐥𝐝: ✔ SaaS Platforms ✔ Custom Business Applications ✔ Enterprise Web Applications ✔ REST APIs & Microservices ✔ AI-Powered SaaS applications ✔ Document Management Platforms ✔ Admin Dashboards ✔ Secure Authentication Systems ✔ E-Commerce Applications ✔ Analytics & Reporting Dashboards ✔ Enterprise Web Applications ✔ Marketplace Platforms 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 𝟏. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Java | Spring Batch | Spring AI | Spring Boot | Python | Django | Flask | Fast API 𝟐. 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React.js | Next.js | Streamlit | JavaScript | TypeScript | HTML5 | CSS3 | Tailwind CSS 𝟑. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 PostgreSQL | MySQL | MongoDB | Pinecone | Opensearch | ChromaDB 𝟒. 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐥𝐨𝐮𝐝 Docker | Kubernetes | CI/CD | AWS | Git 𝟓. 𝐖𝐨𝐫𝐝𝐏𝐫𝐞𝐬𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 WordPress | Elementor | Shopify | WooCommerce | Custom Themes & Plugins I would like to share brief details about my recent projects here: ✔ Infomate AI – Enterprise Knowledge Assistant AI-powered internal knowledge platform enabling teams to instantly search company documents and receive source-backed answers. ✔ Saffy – Workflow Management System Business operations platform designed to streamline approvals, workflows, and team management processes. ✔ Fashion Fable – E-Commerce Management Platform Complete e-commerce solution featuring storefront management, inventory control, order processing, and admin operations. ✔ Estimate Simply – AI Proposal & Estimation Platform AI-assisted system for automating project estimation, proposal generation, and business workflow management. 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 ✔ Clean and maintainable architecture ✔ Fast communication ✔ Production-ready code ✔ Scalable backend design ✔ Reliable delivery ✔ Long-term support I have successfully delivered 50+ projects across various platforms throughout my journey, for clients across the USA, UK, Germany, South Korea, and other international markets. If you're looking for a developer who can build reliable software that scales, let's discuss your project. 𝐊𝐞𝐲 𝐖𝐨𝐫𝐝𝐬: Java Developer | SpringBoot Developer | FullStack Developer | React Developer | Backend Developer | SaaS Development | SaaS Platform | Enterprise Applications | Workflow Automation | Business Process Automation | Document Management System | Approval Workflow | RESTAPI | Microservices | Web Application Development | Dashboard Development | Admin Panel Development | Enterprise Software | API Integration | PostgreSQL | Authentication | Role Based Access Control | Business Applications | Scalable Systems | Software Architecture | Digital Signature Platform | Document Processing | Business Dashboard | SpringBoot | ReactJS | Graphql | backend development | python developer | Fast Api | AI | Wordpress | Shopify | Woocommerce | Landing Page | SEO | Optimise

Hi, I’m Priya — a Senior Backend Engineer with 10+ years of experience building scalable backend systems, cloud-native microservices and high-performance APIs using Java and Spring Boot. I help startups and businesses: ✔ Build secure, scalable REST APIs ✔ Design microservices architectures ✔ Improve backend performance & reliability ✔ Migrate legacy systems to modern cloud stacks ✔ Integrate AI-powered features into applications ✔ Agentic AI, RAG pipeline development, Prompt engineering, integrating Claude, Open AI, Openrouter, Ollama I’ve worked with global companies like TCS, Capgemini, and Hilti, contributing to mission-critical enterprise platforms and distributed systems used at scale. 🔹 Core Expertise Java, J2EE, Spring Boot, Spring MVC Microservices (REST, event-driven, Kafka, RabbitMQ) Frontend development on Angular , React, Thymeleaf System design, multithreading, performance optimization AWS (Lambda, EC2, ECS, RDS, API Gateway, S3, CloudWatch) Docker, Kubernetes, CI/CD pipelines SQL & NoSQL databases (Postgres, MySQL, MongoDB, DynamoDB, Supabase) 🤖 AI & Intelligent Systems I also help teams integrate modern AI capabilities into their products: Agentic AI workflows RAG (Retrieval-Augmented Generation) APIs, Configured Light RAG for uploading kowledgebase, business data and based on that AI will respond to user queries and trigger workflow. OpenAI / GPT / Claude / Gemini integrations Vector databases (pgvector, Pinecone) AI microservices & knowledge-base systems Implemented MCP servers and deployed on Railway. Configured Agent in Claud and TypingCloud. What clients like about working with me: Clear communication Strong architecture thinking Clean, maintainable code On-time delivery Long-term reliability If you’re looking for a senior backend engineer who can both build strong systems and think strategically about architecture, I’d be happy to discuss your project.

⬥ 𝗦𝗲𝗻𝗶𝗼𝗿 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with European Commission, European Investment Bank, CACEIS Investor Services, Walmart (Hayneedle), GAP, Williams-sonoma inc & other US clients. ⬥ 𝟴+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 in Java, Node.js, Python, Spring Boot, React, Angular, AWS, Docker ⬥ 𝐁𝐚𝐬𝐞𝐝 𝐢𝐧 𝐋𝐮𝐱𝐞𝐦𝐛𝐨𝐮𝐫𝐠 | 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐟𝐨𝐫 𝐑𝐞𝐦𝐨𝐭𝐞 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐖𝐨𝐫𝐥𝐝𝐰𝐢𝐝𝐞 With over 𝟴 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐡𝐚𝐧𝐝𝐬-𝐨𝐧 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞, I build scalable, secure, and high-performance web applications across finance, e-commerce, and enterprise domains. 𝐈 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐢𝐧: ▪ Backend: Node.js, Python (FastAPI, Django), Java, Spring Boot ▪ Frontend: Angular, React.js ▪ Realtime Systems: Kafka, Elasticsearch ▪ Deployment: Docker, AWS, Azure, GitHub Actions 🧩 𝗞𝗲𝘆 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 ⬥ 𝗖𝗔𝗖𝗘𝗜𝗦 𝗜𝗻𝘃𝗲𝘀𝘁𝗼𝗿 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 Built Java Spring Boot, Node.js (NestJS) services for event-driven financial reporting and investor data processing. Used Apache Kafka for asynchronous workflows, PostgreSQL for data persistence, and AWS with Jenkins and Argo CD for CI/CD and deployments. ⬥ 𝗪𝗮𝗹𝗺𝗮𝗿𝘁 – 𝗛𝗮𝘆𝗻𝗲𝗲𝗱𝗹𝗲 Built Node.js/Express APIs and React-based UI for fulfillment, deals, and order tracking. Used Elasticsearch for lightning-fast product search and Kafka for live order status updates. ⬥ 𝗚𝗔𝗣 Developed Python (FastAPI) backend for inventory and pricing. Integrated PostgreSQL, Redis, and JWT. Supported React frontend. CI/CD via Docker and GitHub Actions. ⬥ 𝗪𝗦𝗜 (Williams-Sonoma Inc.) Built Node.js/Express microservices for product, pricing, and order workflows. Used MongoDB, Redis, and Mongoose for fast data handling. Deployed via Docker on Azure with CI/CD and monitored with PM2/Winston. ⬥ 𝗘𝘂𝗿𝗼𝗽𝗲𝗮𝗻 𝗜𝗻𝘃𝗲𝘀𝘁𝗺𝗲𝗻𝘁 𝗕𝗮𝗻𝗸 Built secure Spring Boot services to process SWIFT messages and automate high-volume cashflows in a critical fintech environment. ⬥ 𝗘𝘂𝗿𝗼𝗽𝗲𝗮𝗻 𝗖𝗼𝗺𝗺𝗶𝘀𝘀𝗶𝗼𝗻 Developed Angular frontend and Java EE backend deployed on WebLogic for customs and taxation systems. Delivered secure, production-ready features in a regulated government environment. 🛠 𝗖𝗼𝗿𝗲 𝗦𝗸𝗶𝗹𝗹𝘀 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Node.js, Express.js, Python (FastAPI, Django, Flask), Java, Spring Boot, REST/SOAP, Kafka, Microservices 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: Angular, React.js, TypeScript, Tailwind CSS, PrimeNG, Responsive UI/UX 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗹𝗼𝘂𝗱: Docker, Kubernetes, Jenkins, GitHub Actions, AWS (EC2, Lambda, S3), Azure 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, Oracle SQL, MongoDB, MySQL, Redis, Elasticsearch 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: Selenium, Jest, Mocha, Postman, Unit & Integration Testing, TDD 𝗧𝗼𝗼𝗹𝘀 & 𝗣𝗿𝗼𝗰𝗲𝘀𝘀: Agile/Scrum, Git, Maven, Gradle, CI/CD, API Design ✅ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 ▪ Full-stack expertise across Java, Node.js, Python, Angular & React ▪ Proven success on platforms with millions of users & high-volume data ▪ Clean, maintainable, testable code with performance focus ▪ Fast communication, reliable delivery, agile mindset ▪ End-to-end execution: from architecture to cloud deployment 💡 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗗𝗼 𝗙𝗼𝗿 𝗬𝗼𝘂 ▪ Build fast, cloud-native, production-grade web applications ▪ Develop secure, scalable REST APIs and backend systems ▪ Deliver pixel-perfect, responsive UIs using modern frameworks ▪ Automate deployments and streamline delivery pipelines ▪ Debug, optimize, and modernize your software infrastructure 📩 𝗟𝗲𝘁’𝘀 𝗪𝗼𝗿𝗸 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿 Ready to take your product to the next level? Message me today — let’s build something that performs.

Senior Java Backend Developer with 8+ years of experience building and maintaining REST APIs and microservices using Spring Boot. I help businesses with: - Backend development and long-term support - Building and improving REST APIs - Debugging and fixing performance issues - Integrating third-party services (payments, APIs) - Refactoring and maintaining legacy systems Experienced in fintech, banking, and retail projects with a focus on stable, scalable backend systems. Tech stack: Java, Spring Boot, PL/SQL, REST Let’s discuss your project.

Need to automate workflows, integrate AI, or build a backend that scales reliably? I’m Hao, a Senior Full-Stack Engineer with 5+ years of experience building production-ready applications, automation systems, data pipelines, and cloud-native backend services. I help businesses turn complex technical challenges into practical, scalable solutions, including: ✅ Workflow Automation & Data Pipelines Event-driven pipelines, business process automation, API integrations, and marketing platform integrations such as Google Ads and Facebook Ads. ✅ AI & Generative AI Solutions AI-powered product features, model fine-tuning with LoRA, Hugging Face deployments, and generative AI integrations built for real-world use. ✅ Scalable Backend Development High-performance microservices and APIs using Python, Java, Go, and Spring Boot, deployed across AWS and Google Cloud. What you can expect when working with me: - Clean, maintainable, and well-tested code - Reliable architecture designed for scale - Clear communication and practical documentation - Solutions aligned with your business goals, not just technical requirements Whether you are launching an AI feature, improving internal operations, or scaling a cloud platform, I can help you build it efficiently and reliably. Let’s discuss your project and turn your idea into a production-ready solution.