I help startups transform Angular/React frontends and .NET backends into scalable, production-ready SaaS platforms with real engineering behind them—not just API calls duct-taped to someone else's system. 🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 · ⏳ 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐬𝐡𝐢𝐩𝐩𝐢𝐧𝐠 𝐟𝐮𝐥𝐥 𝐬𝐭𝐚𝐜𝐤 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 Most "full stack" developers own the frontend and hand off the backend to someone else. I own both - React/Angular on the frontend, .NET Core or Node.js on the backend, deployed and production-ready end to end. That means fewer handoffs, faster iteration, and a system that's architected consistently from database to UI instead of stitched together. ──────────────────────────────── 🛠️ 𝐂𝐎𝐑𝐄 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 ──────────────────────────────── 🏅Backend: .NET Core, ASP.NET Core, C#, Node.js, Web API, Entity Framework, Microservices, REST APIs 🏅Frontend: Angular, React.js, Next.js, TypeScript, JavaScript, Tailwind CSS 🏅Cloud & DevOps: Microsoft Azure, AWS, Docker, CI/CD 🏅Database: SQL Server, PostgreSQL, MongoDB Also comfortable with: Python (FastAPI, Django, Flask) used when a project calls for it ──────────────────────────────── 𝐑𝐎𝐋𝐄𝐒 𝐈 𝐓𝐀𝐊𝐄 𝐎𝐍 (𝟏𝟎+ 𝐘𝐄𝐀𝐑𝐒 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄) ──────────────────────────────── ✔ Full Stack Developer / Full Stack Engineer ✔ .NET Developer / .NET Core Developer / C# Developer (backend & full stack) ✔ Frontend Developer - component architecture, state management, performance ✔ Angular Developer (8–20) for teams standardized on Angular ✔ SaaS Developer / Multi-Tenant SaaS Architect ✔ React Developer / React.js Developer / Next.js Developer ──────────────────────────────── 🏆 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄 ──────────────────────────────── ✅ Top Rated Plus | Long-Term Jobs Successfully Completed on Upwork ✅ 10+ years shipping production frontend + backend systems ✅ Comfortable owning a project end-to-end or slotting into an existing team ✅ Enterprise client feedback: "demonstrated excellent technical knowledge and professionalism. Delivered high-quality work on time and was reliable throughout" ✅ Several contracts have run 6+ months, clients keep me on past the first milestone ✅ Clear communication, honest scoping, no surprises If you need a Full Stack Developer who can own a Angular/React frontend and a real backend behind it, send me your project and I'll respond within a few hours. ──────────────────────────────── Expertise & Years of Experience ──────────────────────────────── 🖥️ System Programming: 10 years Experience C# , VB.NET 🌐 Web Technologies: .NET: 🌐 10 + years Experience , Web forms, MVC, .NET CORE, Web API, Entity framework LINQ, Code first and Database First Approach HTML, Java Script, jQuery, Ajax, CSS, Angular - 🅰️ 7+ years Experience React - ⚛️5 years Experience Blazor - 🅱️1 year Experience ☁️ Cloud Computing: 10 years Experience 🚀AWS: Hosting RDS , EC2 S3 bucket SSL Certificate Restore DB Snapshots AWS CLI 🔵Azure : CI/CD Functions App Service Bus Service Fabric Application Insights 🐳Docker: 5+ years Experience 💳 Payment Gateway: 10 years Experience Implemented Stripe payment gateway and PayPal Recurring payments. 🛢️ DBMS SQL Server: 10 years Experience Expert in database design and architecture. I possess the skills to strategically structure databases, ensuring optimal performance, scalability, and efficiency. RDMS Stored Procedures SQL Profiler Complex Queries in SQL

My UPWORK achievements : ✅Hours Logged 4790+ ✅Delivered jobs 17+ ✅JSS 99% with TOP RATED PLUS Badge. I have experience in building responsive web application using React.JS and familiar with its UI components ready to use with Supabase, Strapi, Node.js, AngularJS, Material UI etc. Also I can develop hybrid mobile apps using React Native platform. My expertise includes: = Nuclide | JAVAScript | Expo | Typescript = Sublime, My Text Editor | ESLint | Enzyme =>Sentry | Opensource frameworks - React => Navigation, Redux, Native base => Redux | Redux-Saga | Redux-Persist | React Navigation => Flexbox | Map and Geolocation => Firebase Cloud Messaging | Firebase Realtime Database | Firebase Analytics => Codepush (Hockey App & appcenter) => Social Media Login (Facebook & Google) => Ignite | Expo | CRNA Looking forward for the opportunity to work with potential clients all over the globe.

Looking for a trusted development partner to build your SaaS platform, AI application, startup MVP, custom web/mobile app, or automate your business workflows? With 19+ years of experience, I've helped startups, agencies, and enterprises build secure, scalable, and production-ready software that delivers real business value. 🏆 190+ Successfully Delivered Projects 💰 $300K+ Earned on Upwork ⭐ 100% Job Success Score ⏱️ 6,600+ Hours Worked 💼 Core Expertise • AI-Powered SaaS Platforms & Startup MVPs • Custom Web Applications & Mobile Apps • AI Agents, AI Chatbots & LLM Applications • Workflow Automation (n8n, Make, Zapier & AI Automation) • CRM, ERP & Custom Business Software • REST APIs, Third-Party Integrations & Payment Gateway Integration • Admin Dashboards, Enterprise Applications & Cloud Solutions Technologies I Work With Frontend: React.js, Next.js, TypeScript, JavaScript, Angular, Vue.js Backend: Node.js, Express.js, Laravel, PHP, Python, Django, .NET Mobile: Flutter, React Native, Swift, Kotlin Database: PostgreSQL, MySQL, MongoDB, Firebase Cloud & AI: AWS, OpenAI, Claude, Gemini, GraphQL, REST APIs, Stripe, PayPal, Google APIs I build clean, maintainable, and scalable software with a focus on performance, security, AI integration, automation, and long-term growth. Whether you're launching a new product, modernizing an existing application, integrating AI, or streamlining operations, I deliver solutions designed to scale with your business. Clear communication, reliable delivery, and long-term client success are my priorities. Available for long-term partnerships, dedicated development, and ongoing product support. Let's build software that creates real business impact.

𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗮𝗮𝗦 𝗮𝗻𝗱 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗧𝗵𝗮𝘁 𝗦𝘁𝗮𝘆 𝗙𝗮𝘀𝘁, 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗮𝗻𝗱 𝗘𝗮𝘀𝘆 𝘁𝗼 𝗠𝗮𝗶𝗻𝘁𝗮𝗶𝗻 A great application isn't just one that works today. It's one that continues to perform as your users, data and business grow. For the past 10+ years, I have been helping startups and enterprises build, modernize and scale web applications using ASP.NET Core, Blazor, Angular, React, TypeScript, SQL Server and Microsoft Azure. Whether it's developing a new SaaS platform, modernizing a legacy application or improving performance, I focus on building solutions that are reliable, maintainable and ready to grow. 𝑬𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆 𝑯𝒊𝒈𝒉𝒍𝒊𝒈𝒉𝒕𝒔 ************************* ✔ 12+ Years of Full Stack Development Experience ✔ $100K+ Earned on Upwork ✔ 21 Successfully Completed Long-Term Projects ✔ 5,500+ Development Hours Logged ✔ Built and maintained SaaS, Enterprise, Healthcare, FinTech and Business Applications 𝑪𝒐𝒓𝒆 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆 **************** 🔹 ASP.NET Core, .NET Framework, C#, Web API, Entity Framework Core 🔹 Blazor, Angular, React, TypeScript, JavaScript 🔹 SQL Server, PostgreSQL, MySQL 🔹 REST APIs, GraphQL, Third-Party API Integrations 🔹 Microservices, Clean Architecture, Domain-Driven Design (DDD) 🔹 Microsoft Azure, Azure App Services, Azure Functions, Azure Storage 🔹 Azure DevOps, CI/CD Pipelines, Git, Docker 🔹 Authentication (JWT, OAuth, OpenID Connect, Microsoft Identity) 🔹 Performance Optimization, Application Modernization & Legacy Migration 𝑯𝒐𝒘 𝑰 𝑪𝒂𝒏 𝑯𝒆𝒍𝒑 ***************** • Build scalable SaaS applications from the ground up • Develop modern web applications with Blazor, Angular or React • Design secure, high-performance REST APIs • Modernize legacy .NET applications to the latest .NET versions • Improve application speed, scalability and maintainability • Integrate third-party services, payment gateways and external APIs • Deploy, automate and manage applications on Microsoft Azure 𝑴𝒚 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝑨𝒑𝒑𝒓𝒐𝒂𝒄𝒉 ****************************** ✔ Clean, maintainable and well-documented code ✔ Performance-focused architecture that scales with your business ✔ Clear communication and proactive updates throughout the project ✔ Long-term solutions instead of quick fixes I believe successful projects come from understanding business goals as much as writing quality code. My focus is on delivering software that is reliable, easy to maintain and built for long-term success. If you are looking for someone who can confidently work across the entire Microsoft stack, from backend architecture to modern frontend development and Azure deployment. I would be happy to discuss your project and see how I can help. 𝑪# •.𝑵𝑬𝑻 • 𝑨𝑺𝑷.𝑵𝑬𝑻 𝑪𝒐𝒓𝒆 • 𝑩𝒍𝒂𝒛𝒐𝒓 • 𝑨𝒏𝒈𝒖𝒍𝒂𝒓 • 𝑹𝒆𝒂𝒄𝒕 • 𝑻𝒚𝒑𝒆𝑺𝒄𝒓𝒊𝒑𝒕 • 𝑱𝒂𝒗𝒂𝑺𝒄𝒓𝒊𝒑𝒕 • 𝑨𝒛𝒖𝒓𝒆 • 𝑨𝒛𝒖𝒓𝒆 𝑫𝒆𝒗𝑶𝒑𝒔 • 𝑹𝑬𝑺𝑻 𝑨𝑷𝑰 • 𝑾𝒆𝒃 𝑨𝑷𝑰 • 𝑬𝒏𝒕𝒊𝒕𝒚 𝑭𝒓𝒂𝒎𝒆𝒘𝒐𝒓𝒌 𝑪𝒐𝒓𝒆 • 𝑺𝑸𝑳 𝑺𝒆𝒓𝒗𝒆𝒓 • 𝑷𝒐𝒔𝒕𝒈𝒓𝒆𝑺𝑸𝑳 • 𝑴𝒊𝒄𝒓𝒐𝒔𝒆𝒓𝒗𝒊𝒄𝒆𝒔 • 𝑫𝒐𝒄𝒌𝒆𝒓 • 𝑪𝑰/𝑪𝑫 • 𝑺𝒂𝒂𝑺 • 𝑬𝒏𝒕𝒆𝒓𝒑𝒓𝒊𝒔𝒆 𝑨𝒑𝒑𝒍𝒊𝒄𝒂𝒕𝒊𝒐𝒏𝒔 • 𝑷𝒆𝒓𝒇𝒐𝒓𝒎𝒂𝒏𝒄𝒆 𝑶𝒑𝒕𝒊𝒎𝒊𝒛𝒂𝒕𝒊𝒐𝒏 • 𝑳𝒆𝒈𝒂𝒄𝒚 𝑴𝒐𝒅𝒆𝒓𝒏𝒊𝒛𝒂𝒕𝒊𝒐𝒏 • 𝑪𝒍𝒆𝒂𝒏 𝑨𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕𝒖𝒓𝒆 • 𝑮𝒓𝒂𝒑𝒉𝑸𝑳 • 𝑶𝑨𝒖𝒕𝒉 • 𝑱𝑾𝑻

Looking for a Senior .NET Full Stack expert who can take complete ownership of your application from architecture and backend APIs to modern Angular, React or Blazor front ends to modernize your application, build a scalable SaaS platform, or integrate AI into your existing software?? With 18+ years of experience, Top Rated Plus, 100% Job Success and Trusted by clients worldwide with hundreds of thousands of dollars in successful projects delivered on Upwork, I have helped startups, SMEs and Fortune 500 companies build, modernize and scale enterprise applications. Unlike developers who specialize in only the frontend or backend, I work across the entire Microsoft ecosystem from database design and architecture to cloud deployment and modern JavaScript frameworks. Whether you need a new SaaS product, an enterprise application, AI integration or a legacy system modernized, I can own the project from planning through deployment. What I Can Help You With ------------------------------- ✔ Legacy ASP.NET / .NET Framework → .NET 8 Migration ✔ Full Stack SaaS Development (.NET + Angular / React) ✔ Angular & React Front-End Development ✔ Enterprise SaaS Development ✔ Enterprise Web Applications ✔ ASP.NET Core Web Applications ✔ ASP.NET Core APIs ✔ REST API Development & Integration ✔ Blazor Applications (Blazor Server & Blazor WebAssembly) ✔ Angular Migration & Upgrades ✔ React Application Development ✔ Azure Cloud Solutions ✔ Database Design & SQL Server Optimization ✔ SQL Server Performance Optimization ✔ Application Modernization ✔ Technical Architecture & Code Reviews ✔ Team Leadership & Mentoring ✔ Rescue & Completion of Existing Projects ✔ Performance Optimization MY EXPERTISE -------------------- ✔Backend • C# • .NET Framework • ASP.NET MVC • ASP.NET Core • Web API • Minimal APIs • Entity Framework • Dapper • SQL Server • MySQL ✔ Frontend • Angular (AngularJS through Angular 20+) • React • Next.js • Blazor Server • Blazor WebAssembly • JavaScript • TypeScript • HTML5 • CSS3 • Bootstrap • jQuery ✔ Cloud & DevOps • Microsoft Azure • Azure Functions • Azure App Services • Azure Storage • Azure DevOps • Docker • Kubernetes • CI/CD • Jenkins ✔ AI Expertise I help businesses integrate AI into existing applications and develop new AI-powered products. Examples include: • OpenAI / ChatGPT integration • AI Agents • AI Chatbots • RAG Applications • Document Processing • Workflow Automation • Voice AI • Image Generation • AI-assisted business applications Why Clients Hire Me ------------------------ ✔ Top Rated Plus ✔ 100% Job Success ✔ Hundreds of thousands of dollars in successful projects delivered on Upwork ✔ 18+ years of professional experience ✔ End to end ownership from architecture to deployment ✔ Strong communication and long-term client relationships ✔ Clean, maintainable, scalable code ✔ Experience across startups, SMEs, and Fortune 500 companies Whether you need to build a new application, modernize an existing system, integrate AI capabilities, or solve complex technical challenges, I bring the experience, technical expertise, and reliability needed to deliver successful results. Let's discuss your project and build software that is scalable, maintainable, and ready for the future.

👀𝑶𝒑𝒆𝒏 𝒎𝒚 𝒑𝒂𝒈𝒆. 𝑾𝒉𝒂𝒕 𝒅𝒐 𝒚𝒐𝒖 𝒔𝒆𝒆 𝒉𝒆𝒓𝒆? 𝑰𝒕's 𝒂 𝒄𝒐𝒏𝒄𝒆𝒏𝒕𝒓𝒂𝒕𝒊𝒐𝒏 𝒐𝒇 𝒖𝒔𝒆𝒇𝒖𝒍𝒍 𝒔𝒌𝒊𝒍𝒍𝒔, 200+ 𝒅𝒐𝒏𝒆 𝒋𝒐𝒃𝒔 𝒂𝒏𝒅 𝒂𝒎𝒂𝒛𝒊𝒏𝒈 𝒎𝒖𝒔𝒕𝒂𝒄𝒉𝒆 𝒊𝒏 𝒐𝒏𝒆 🥸! 𝑾𝒉𝒆𝒏 𝒚𝒐𝒖 𝒘𝒆𝒓𝒆 𝒂𝒔𝒌𝒊𝒏𝒈 𝒇𝒐𝒓 𝒇𝒖𝒍𝒍 𝒔𝒕𝒂𝒄𝒌 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 𝒚𝒐𝒖 𝒘𝒂𝒏𝒕𝒆𝒅 𝒕𝒐 𝒉𝒂𝒗𝒆 𝒂𝒍𝒍 𝒊𝒏 𝒐𝒏𝒆? 𝑺𝒐 𝑰 𝒘𝒆𝒍𝒄𝒐𝒎𝒆 𝒚𝒐𝒖 𝒕𝒐 𝒕𝒉𝒆 𝒔𝒎𝒂𝒍𝒍 𝒄𝒉𝒂𝒕 𝒕𝒐 𝒅𝒆𝒄𝒊𝒅𝒆 𝒊𝒇 𝒘𝒆 𝒂𝒓𝒆 𝒂 𝒎𝒂𝒕𝒄𝒉! 𝑪𝒍𝒊𝒄𝒌 "𝑴𝒆𝒔𝒔𝒂𝒈𝒆" 🏆 Top Rated Plus ✅ 100% Job Success Score ⏳ 7,000+ hours tracked on Upwork 📈 Builds serving 5 - 10M monthly users 💾 Databases holding 100M+ user records I provide Full Stack Developer work that outlives the launch - a Full Stack Developer who carries the Front End Developer and Backend Developer load on the same project, no vendor handoffs. My Full Stack Developer focus is CRM, ERP, admin systems and B2B platforms - Full Stack Developer builds with RBAC, audit trails and Stripe billing. Clients come to a Full Stack Developer instead of splitting a project between a Front End Developer shop and a Backend Developer contractor, so QA and deployment stay inside one Full Stack Developer workflow. The Full Stack Developer stack is React, Next.js, Vue, PHP, Node.js, MySQL and Redis, on AWS, GCP and Heroku infrastructure sized for peak loads up to 100K users per second. Adjacent Full Stack Developer tracks: Full Stack Web Developer rebuilds, Python Full Stack Developer pairings for data work, Full Stack Developer AI on a codebase already in production, and Full Stack Developer React funnels. My Front End Developer track is where a product stops looking like an internal tool - dashboards, admin panels, multi-tenant SaaS consoles and marketing funnels, with pages rendering in under 2 seconds. A Front End Developer React build is the default in a Full Stack Developer engagement: React with Next.js, Tailwind and Redux, plus Front End Developer Next.js server rendering when SEO carries the traffic. My Front End Developer also ships Vue 3 with Pinia when a project already runs a PHP backend. Clients searching for a Front End Web Developer or a React Developer want one Front End Developer who owns component architecture, state and API contracts. Front End Developer AI work grows every quarter: streaming responses, chat surfaces and agent panels in an app that already has users. My Backend Developer work carries the load underneath - REST and GraphQL APIs, queues, background jobs, reporting and integrations. A Node.js Backend Developer service is the usual answer when real-time traffic or webhook throughput matters, and a Backend Developer Nest.js structure keeps a growing API navigable. On the PHP side the same Backend Developer covers Laravel and custom PHP with MySQL, Redis and OpenSearch. Where a client wants a JavaScript backend end to end, backend NodeJS services sit behind the same Next.js frontend, and a Python Developer joins for data work and AI. My Backend Developer also inherits legacy systems: a WordPress Developer migration out of Gutenberg into a custom platform, an API that keeps answering while it gets replaced. Clients search by role, and the same engineers field all of them - a Full Stack Developer, a Backend Developer or a Software Developer on the server side, a Front End Developer, React Developer or Vue.js Developer on the client side, and PHP Developer, CRM Developer or ERP Developer profiles. When a build needs a Mobile App Developer alongside the web product, my engineers ship the app on the same Full Stack Developer API. As COO I oversee every Full Stack Developer engagement - the discovery, matching the right Full Stack Developer engineers, the commercial side. My Front End Developer and Backend Developer engineers own the code, and they say I am full stack developer with more than 12 years of experience - my main skill is full stack development. Clients hire me for Full Stack Developer work when they need: - a Full Stack Developer who owns frontend, backend, infrastructure and deployment - a Front End Developer for a dashboard, console or funnel that has to feel fast - a Backend Developer for APIs, integrations and reporting that stay predictable under load Recent Full Stack Developer work I shipped: - Built a Full Stack Developer identity-verification SaaS on a PHP API with Node.js real-time on MySQL and Redis - 4K+ DAU, 1M+ checks through a public Developer API. - Scaled a multi-currency voting SaaS to 2M+ users across 10 countries with vote locking and Stripe payouts, $2.5M+ revenue. - Grew a B2B luxury asset marketplace with 15 engineers - React, Next.js, PostgreSQL, OpenSearch, Stripe - to 26K MAU, 75% MoM growth, 25% engagement. - Delivered a Full Stack Developer medical-center ERP with registration, cashier, doctor and lab modules for 60 staff and 500 patients a day. Need a Full Stack Developer who covers the Front End Developer and Backend Developer sides and stays long-term - let's talk.

I build payment systems and the AI agents that run on top of them. I am a senior backend engineer with 9+ years in Java and Spring Boot, including 4+ years on the billing and payments platform behind a marketplace moving about $4B a year. PAYMENTS AND FINTECH I deliver provider integrations end to end: Adyen, Braintree, Payoneer, PayPal, Venmo, Wise, Wells Fargo, Bank of America and Forter, on a platform operating across 180+ countries. My work covers card processing, wallets, payouts, bank transfers, fraud screening and reconciliation over REST, SFTP and webhooks. I have also integrated Stripe, FastSpring and bank vPOS in client products. Representative work: - Migrated a major payout provider from a legacy protocol to REST with OAuth 2.0. The migration covered payouts, mass payouts, payee registration, card release and reconciliation. I shipped it to 100% behind feature flags with no customer-facing incidents. I built provider emulators to test it without vendor sandboxes. - Designed a card-processing service on a provider's GraphQL API covering client tokens, payment methods, network tokens, cryptograms, authorization, capture, refunds, cancellations and 3D Secure. - Built a forwarding layer that routes network tokens between two providers, enabling non-US card acceptance. I rolled it out in stages and negotiated timeout SLAs directly with the vendor. - Authored the design for splitting a payments monolith into nine provider-specific microservices. Domain coverage: 3DS2, network tokenization, cryptograms, authorization and capture, refunds, chargebacks, reconciliation through APIs, webhooks and SFTP files, idempotency and double-charge prevention, mass payouts, ACH returns, fraud screening, PCI-aware design. AI AGENTS AND LLM SYSTEMS I build AI that runs inside products with real users and revenue. I built an agentic system that investigates failed payment transactions on its own, reasoning across logs, dashboards, source code and incident tooling to cut manual triage. I built it with Python, LangChain and multi-agent orchestration. It runs in a high-stakes payments environment, where being wrong has a cost. I also built and run Memabooks, a profitable AI commerce product that turns a child's photo into a personalized illustrated storybook. Over 10,000 books created so far, printed on demand and shipped worldwide, with customers in eight countries. I developed a multi-stage, identity-preserving image generation pipeline covering face detection, background removal, personalized character generation, skin-tone matching and character consistency across a complete book. I work with diffusion models, fine-tuned LoRA adapters and serverless GPU inference, tuning for quality, latency and cost. I also built the Node/NestJS backend, the Angular front end, print-on-demand fulfilment, and the payment stack for a market with limited access to major global processors: bank vPOS, 3DS2, Apple Pay, idempotency and double-charge prevention, and abandoned-payment recovery. AI stack: LangChain, LangGraph, LlamaIndex, multi-agent systems, RAG and multimodal RAG, vector databases (FAISS, Chroma), Model Context Protocol, OpenAI, Gemini, Azure AI. BACKEND ENGINEERING AND RANGE My core stack is Java 17 and Spring Boot. I also have production experience with Node.js, NestJS, TypeScript, Python, PostgreSQL, MongoDB, AWS, Docker, Kubernetes, REST, GraphQL, microservices and event-driven architecture. I was the sole engineer responsible for Geoapify's product surface for 17 months, working directly with the product owner across 14 repositories. I built a geocoding SaaS end to end, covering file upload, worker-based job processing, object storage and card payments. I maintained their public TypeScript SDKs for MapLibre GL, Leaflet and GeoJSON, which see about 55K npm downloads a month, and owned their public API playgrounds and OpenAPI specs. Testing is part of my delivery process. On one project, I built 260 Playwright end-to-end tests from scratch in about six days. WHAT I CAN HELP WITH - Payment provider and fintech integrations - Java and Spring Boot backend development - Backend architecture and monolith-to-microservices migrations - AI agents, RAG and LLM integration - API design, reliability, observability and production troubleshooting CREDENTIALS - Oracle Certified Professional: Java SE 11 Developer - IBM RAG and Agentic AI Professional Certificate - Google Cloud Generative AI Leader - Microsoft Azure AI Fundamentals - BSc in Computer Science, American University of Armenia - Former Java lecturer, Russian-Armenian University My longest engagement here ran 19 months and 2,700+ hours. I am open to long-term, full-time and contract-to-hire engagements. Tell me what you need built or what is currently breaking. I will tell you honestly whether I am the right engineer for it.

👋 Hello, I'm Kashaf Shanawar! I’m a passionate Java & Angular Developer with expertise in building dynamic, scalable, and high-performing web applications. With over 2 years of hands-on experience, I specialize in designing and developing full-stack applications with robust Java Spring Boot backends and interactive Angular frontends. 💡 What I Offer: ✅ Full-Stack Development – Expertise in Java Spring Boot and Angular, ensuring seamless integration between backend and frontend. ✅ API Development & Integration – Proficient in creating and securing RESTful APIs. ✅ Database Management – Experienced with MySQL, PostgreSQL, and MongoDB for efficient data storage and retrieval. ✅ Authentication & Security – Implementing Spring Security & JWT for secure applications. ✅ Microservices Architecture – Developing scalable and distributed systems with Spring Boot microservices. ✅ Trading Systems Development – Worked on real-time trading platforms integrated with stock exchanges, handling market data, FIX protocols, and order management systems (OMS). 🛠 Tech Stack: Backend: 🔥 Java (JDK 8, 11, 17, 21) | Spring Boot | Spring Security | Hibernate (JPA) | REST APIs | Microservices | Kafka Frontend: ⚡ Angular | TypeScript | JavaScript | HTML5 | CSS3 Database: 📌 MySQL | PostgreSQL | MongoDB Tools & Platforms: 🚀 Git | Jira | Postman | Docker 💼 Work Experience: 🔹 Java Angular Developer | Softech Systems Limited (2023 – Present) Building scalable Java Spring Boot applications with REST APIs & microservices. Developing real-time trading platforms with Pakistan Stock Exchange (PSX) & Ghana Stock Exchange integration. Enhancing Order Management System (OMS) and implementing STOP/LOSS trading functionalities. Revamping the trading terminal using Angular for a smoother user experience. 🔹 Full Stack Java Angular Intern | Zin Technologies (2023) Developed full-stack applications with Java Spring Boot, Angular, and MySQL. Worked in Agile environments with Git and Jira for project management. 🔥 Why Hire Me? ✔ 100% Client Satisfaction – I prioritize delivering high-quality, well-structured, and efficient code. ✔ Deadline-Oriented – I ensure timely delivery while maintaining excellent code quality. ✔ Strong Problem-Solving Skills – I love challenges and always find innovative solutions. ✔ Effective Communication – Clear, proactive, and transparent communication for seamless project execution. ✔ Continuous Learner – Always eager to explore the latest technologies and best practices. 📩 Let’s Work Together! Looking for a reliable, detail-oriented, and skilled full-stack developer to take your project to the next level? Let's discuss how I can help! 📨 Message me now, and let's build something amazing together! 🚀

I am a Full Stack Web & Mobile Developer with 8+ years of experience building scalable, high-performance applications for startups, agencies, and enterprises. Today, I specialize in developing AI-powered applications, SaaS platforms, and automation-driven systems that help businesses grow faster and operate smarter. What I Can Help You With: ✔ AI integrations (OpenAI, chatbots, smart automation) ✔ SaaS product development (MVP to scalable platform) ✔ Enterprise web applications ✔ Cross-platform mobile apps (Flutter) ✔ API development & third-party integrations ✔ Performance optimization & scalable architecture Technical Expertise Frontend: React.js, Redux, Angular, HTML5, CSS3, Bootstrap Backend: .NET Core, .NET MVC, Node.js, Express Mobile: Flutter, Xamarin (Android & iOS) Database: MongoDB (Mongoose), MSSQL, PostgreSQL, MySQL Other: REST APIs, Microservices, Unit Testing, IIS Deployment AI & Automation Focus I actively implement AI-driven solutions such as: • AI chatbots & conversational interfaces • OpenAI/LLM integrations • Intelligent workflows & automation • Data-driven dashboards My goal is simple: Build smart systems that save time, reduce cost, and increase revenue. Whether you need to build a product from scratch or scale an existing system, I’m here to deliver reliable and future-ready solutions. Let’s discuss your project and turn your idea into a powerful digital product.

I’m a Senior Full-Stack Developer & Software Architect with 12+ years of experience building scalable, high-performance applications for USA-based enterprise clients and multibillion-dollar brands. I specialize in designing and delivering end-to-end solutions — from architecture to deployment — with a strong focus on clean code, scalability, and long-term maintainability. In the last 2+ years, I’ve also been working extensively with AI-powered solutions, integrating LLMs (Claude, OpenAI) into real-world applications such as chatbots, automation tools, and intelligent data processing systems. Backend Expertise C#, .NET Core, ASP.NET MVC, Web API, Node.js, Python Building secure, scalable, and high-performance APIs and microservices Frontend Development React.js, Angular, Blazor, Vue.js, TypeScript Modern, responsive, and user-friendly UI development AI & Automation (Latest Focus) Claude API & OpenAI integrations RAG (Retrieval-Augmented Generation) systems AI chatbots & workflow automation Prompt engineering & document processing AI-assisted development using Cursor Cloud & DevOps Azure (App Services, Functions, API Management) AWS (Lambda, S3, SQS, SNS, DynamoDB) Docker, CI/CD pipelines, Azure DevOps Database Expertise MS SQL Server, PostgreSQL, MySQL, MongoDB, Redis Architecture & Best Practices Microservices, DDD, SOLID principles, Clean Architecture