🚀 Top-Rated Full-Stack & AI Developer | SaaS | LLM | Automation Expert With 10+ years of experience, I build scalable, high-performance web & mobile applications powered by modern full-stack technologies and advanced AI systems. I specialize in AI SaaS, LLM integrations, and automation platforms that don’t just work — they drive real business results. 🏆 Proven Track Record: ⭐200+ Projects Completed on Upwork ⭐100% Job Success Score ⭐80%+ Repeat Clients ⭐3300+ Hours Logged 💡 What I Can Build for You ✅ AI-powered SaaS platforms ✅ Smart chatbots & AI assistants (GPT, Claude, LLaMA) ✅ RAG systems with vector databases ✅ Workflow automation tools (n8n, APIs, agents) ✅ Full-stack web & mobile apps ✅ Custom dashboards, CRM, ERP systems 🤖 AI & LLM Expertise ✔LLM Integration: GPT-4/5, Claude, LLaMA, DeepSeek ✔RAG Systems: Pinecone, Weaviate, Milvus, ChromaDB ✔AI Use Cases: ✔Chatbots & AI agents ✔Document processing & summarization ✔AI automation & support systems ✔Predictive analytics & recommendations 💻 Full-Stack Development ⭐Frontend: 🔹React.js, Next.js, Angular, Tailwind CSS ⭐Backend: 🔹Node.js, NestJS, Laravel, Express ⭐Database & Cloud: 🔹MongoDB, PostgreSQL, MySQL 🔹AWS, GCP, Azure ⭐Mobile: 🔹React Native, Flutter ⚡ Why Clients Choose Me ✔ Clean, scalable, production-ready code ✔ Strong communication & fast response ✔ Business-focused solutions (not just coding) ✔ Reliable long-term collaboration ✔ Affordable, high-quality delivery 🚀 Let’s Build Something Powerful Whether you need an AI product, SaaS platform, or automation system, I can help you design, build, and scale it end-to-end. 💬 Send me a message — let’s turn your idea into a real product.

FinTech, Marketplace and SaaS developer. 19 years. $10M+ earned on Upwork via Ronas IT — 1,829 jobs, 100% Job Success Score, Top Rated. I lead a remote team. I'm hands-on on every FinTech build - solution architecture, scope, and release sign-off. Cases: - US neobank - 7-microservice core, Bond + Persona + Sardine + Plaid, SOC 2 path passed on our side - EU neobank - 6-month MVP under PSD2 / AMLD / GDPR, Solaris BaaS + Trulioo KYC - AU travel payments - Stripe + 3DS2 + PayTo / PayID + FingerprintJS Pro, 10 weeks kickoff-to-launch - Docky - Malta yacht-berth marketplace on Stripe SetupIntent + Identity - Hamperapp Miami - on-demand marketplace - Lainappi Finland - P2P rental marketplace on Stripe Connect - UAE marketplace - Arabic RTL + English LTR with OpenAI shopping assistant - $130K B2B SaaS - real-time project management dashboard adopted by 100+ teams - 8-year forex / social-trading platform - real-time trading dashboard - KYC redesign for Digital Finance International - review collapsed from hours to ~1 minute - 14-year FinTech engagement with AA Global Group (London) Stack: - Backend - Node.js, Laravel, Django, PHP, Python, Express, NestJS, FastAPI - Frontend - React, Next.js, TypeScript, Tailwind, REST API, GraphQL - Mobile - React Native, iOS, Android, Expo, EAS, Firebase - Data - PostgreSQL, MongoDB, Redis, Elasticsearch, Supabase - Cloud - AWS, GCP, Vercel, Docker, Kubernetes, Terraform - Architecture - Microservices, Multi-tenant SaaS, Real-time, Cross-platform mobile - Payments - Stripe, Stripe Connect, Plaid, 3DS2 - AI - OpenAI, Generative AI, AI Agents, RAG, LangChain - Compliance shipped - PSD2, AMLD, GDPR, PCI DSS, SOC 2 path, HIPAA, ISO 27001 Ronas IT - 50-70 remote specialists, Estonian entity in Tallinn, Google Cloud Partner, Awwwards Honorable Mention 2024. I'm CEO and co-founder since 2007. Same engineers scope and ship your build - no handoff from sales to delivery. How I work - discovery sprint, architecture + threat model, MVP, audit readiness. Engaged from $5K prototype to $300K neobank build. Send the regulator letter, the audit finding, the integration spec, or just a 3-line problem statement.

I build AI automation and integrations for startups and growing businesses. Voice agents, AI-powered workflows, and API integrations that actually run in production, backed by a full-stack engineering base when a project needs the whole thing built, not just wired together. Most of my work now connects AI into real products. Retell voice agents, OpenAI and Claude API integrations, RAG systems, and end-to-end automation with Make and n8n. I built the automation behind Tranflo, an AI voice agent for restaurants that ties Retell, OpenAI, Twilio and POS systems together, so this is shipped work, not theory. When a build needs a backend, dashboard, or full app around the automation, I cover that too. PHP/Laravel and Node/MERN, Vue and Angular on the front end, MySQL and MongoDB, Firebase and Supabase, Stripe and PayPal. Custom dashboards, multi-vendor eCommerce, and Chrome extensions when the job calls for it. I'm comfortable joining an existing team or working with other freelancers, I'm flexible on hours, and I write code meant to run in production. If you want someone who understands the business side as well as the build, message me and tell me what you're working on.

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

I help businesses build scalable, secure, and high-performance web applications that are ready for real-world usage. What I deliver: • Backend: .NET 8/9, ASP.NET Core, Web API • Frontend: React, MVC • Cloud: Azure, CI/CD • Databases: SQL Server, PostgreSQL, MySQL • Legacy upgrades & third-party integrations Why clients work with me: ✔ Clean, maintainable architecture ✔ Scalable systems (not quick fixes) ✔ Reliable communication & delivery 👉 Let’s build something that scales — click “Invite” to start.

Top Rated Plus Senior Full Stack Engineer (9 yrs · $200K+ earned · 100% Job Success). I help funded SaaS founders and agencies ship AI features into existing Node/Rails/Angular apps in weeks, not quarters. ────────── WHAT I DO I am an AI-native senior engineer specializing in three high-value engagements: → AI integration into existing SaaS — RAG, LLM workflows, Claude/OpenAI APIs in production. Recently built a NestJS + Claude support automation handling 500–1,000 tickets/month for a US e-commerce client (60% manual work eliminated). → Production MVPs in 2–5 weeks — currently building Tairly, a live AI resume-tailoring SaaS on Angular 19 + NestJS + PostgreSQL + Redis/Bull + OpenAI/Anthropic. → Senior remote engineering for European insurtech — 4+ years at Finlex GmbH (Frankfurt). Architected micro-frontends, shipped DDD refactors, and ran high-risk data migrations. ────────── WHY CLIENTS HIRE ME (the proof) - Top Rated Plus — top 1% of Upwork freelancers globally - 100% Job Success Score across 22 completed contracts - $200K+ delivered, all 5.0-star ratings - One client retained me for 4 years on a single $202K+ engagement - 0–4 hour response time, fluent English, working US East / EU hours ────────── TECH STACK Backend: Node.js · NestJS · Express · Ruby on Rails · PostgreSQL · MongoDB · MySQL · Redis · Microservices · REST/GraphQL Frontend: Angular (2+) · TypeScript · Micro-frontends · DDD architecture AI/LLM: OpenAI · Anthropic Claude · RAG · vector search · LangChain · prompt engineering · LLM cost optimization Infrastructure: AWS (EC2, S3, SQS/SNS) · Docker · CI/CD · WebSockets · Bull/Redis queues AI Dev Tools: Cursor · Claude Code · GitHub Copilot · Bolt · Lovable (I ship faster because I use AI in my own workflow) ────────── HOW TO WORK WITH ME → Discovery Call (free, 25 min) — Book via the Consultation below to scope your project. → AI-Readiness Audit — Fixed-price 1-week audit of your existing stack, with a written report on how to add AI without breaking what works. → Sprint-to-Ship — 2-week fixed engagement, one feature shipped to production. → Hourly Engagement — Embedded as a senior on your team. Available 30+ hrs/week. ────────── WHAT I'M *NOT* RIGHT FOR I am not the right fit for: bug-fix gigs under $100, WordPress/template work, ultra-rush fire-fighting (under 48 hours' notice), or projects without a clear technical owner on the client side. If that's the work, there are great freelancers for it, and I am just not one. ────────── Available for 1–2 new clients per quarter. Recent client quote: "Fantastic provider, already working with him on another project. Great work, very high quality. Great communication and very helpful."

☁ Microsoft Certified: Azure Administrator Associate 🏆 80K+ Earning 🎯100+% JSS ✨30+ Jobs Completed 🚀 3100+ Hours Hi 👋, With over a decade 🧠 immersed in MS technologies, I am a seasoned developer specializing in C#, Blazor, .NET (Core 2/3/5), .NET MVC, Angular.js, and Tailwind CSS. I have contributed in a development of 15+ corporate SaaS products and delivered successful projects, transforming their visions into reality. My expertise extends to Azure, DevOps, and CI/CD Integration, including Azure Key Vault. While I have a range of Blazor applications ready to showcase, they are client-specific and thus not publicly accessible to share. 🌟 My Featured Projects ⭐️Blazor Application for a UK-based insurance company. in blazor ⭐️Loan finance application in blazor with radzen tools ⭐️Video calling application in blazor with radzen tools ⭐️Multilevel Marketing site around the world with more than 3.5 lakh active user ⭐️Retail ERP working on 500+ shops and three warehouses. And Maintaining stock. ⭐️Transport management system currently working on 700+ branches in India. ⭐️Warehouse management system, currently working on 27 branches. ⭐️School ERP working on 12 branches. 🧠 WHY CHOOSE ME? 🍋 I don’t just meet high standards, I set them. My goal is to not only meet but extend your expectations with every project. 🍋 I am a strategic thinker, offering smart recommendations to elevate results while keeping costs in check. 🍋 From start to finish, I take full ownership of tasks and projects, ensuring transparent and consistent updates on progress. 🍋 Dependability is my trademark; you can rely on me for quick and responsive communication every time. 🎖️🎖️ My process is thorough, but tailored for each project; normally involves about 6 stages (Discovery, Strategy, Design, Development, QA/testing, Delivery). Always happy to chat or schedule a call to discuss the requirement.🤙 Looking to our successful collaboration. Thanks,

12+ years of experience as a .Net Developer, .NET Core, .NET MAUI, Python, Angular, AWS & Azure. I build scalable platforms, integrate GPT-4/OpenAI, and deliver cloud-based solutions with clean, reliable code. Hello! I'm Keyur Narkhi, a highly skilled and experienced full-stack developer specializing in .NET Development, Angular, Python, AWS glue, AWS and Azure technologies. With a passion for crafting efficient and scalable solutions, I help clients bring their ideas to life and deliver exceptional results. My technical expertise lies in developing robust and user-friendly web applications using the Microsoft .NET framework, python and Angular framework. I have extensive experience in creating responsive and intuitive front-end interfaces that provide a seamless user experience. Additionally, I excel in designing and implementing secure and scalable back-end architectures. I am well-versed in project management methodologies and can help you effectively plan, execute, and deliver your projects. With excellent communication skills, I ensure that I understand your requirements thoroughly and maintain clear and open lines of communication throughout the project lifecycle. If you're looking for a reliable, results-oriented developer with strong project management skills, I'm here to help. Let's discuss your requirements and create innovative solutions together. Sounds knowledge of Open API/Chatgpt API integration. Get in touch, and let's get started!

Dedicated and driven professional with 5 years of experience in software development. Highly skilled in Angular 2+, Typescript, JavaScript, RxJS, NodeJs, Express and other libraries and packages. Proven track record of being creative and proactive in delivering high-quality solutions to complex problems. Committed to personal and professional growth, always seeking to expand my skillset and stay up-to-date with the latest technologies and industry trends.

Most SaaS MVPs are built to launch, not to scale. I help founders rescue struggling codebases and build high-performance web platforms that handle real user growth without crashing when it matters most. You aren't looking for someone to just write lines of code. You need a technical partner who understands that every bug costs you users, every delay burns your runway, and messy architecture means throwing away your codebase in 6 months. With 6+ years of experience architecting full-stack applications, I don't ask "what do you want me to build?" I ask, "how does this feature drive revenue?" HOW I HELP BUSINESSES: • SaaS Architecture & MVPs: I build scalable, investor-ready SaaS products. I utilize the MEAN stack because it allows for rapid iteration—meaning you get to market and start charging users weeks faster. • Rapid Scaling with Modern BaaS: Leveraging tools like Supabase to cut backend development time in half, preserving your budget for marketing and user acquisition. • Performance Rescues & AWS Cost Reduction: I take over sluggish backends, refactoring them with NestJS or integrating Rust to eliminate downtime and drastically reduce your monthly server costs. • High-ROI AI Integration: I don't just plug in generic chatbots. I build custom RAG pipelines and automate complex user workflows, giving you premium, "smart" features you can upcharge your users for. THE PROCESS: I operate as a consultant first. We map out your business logic, define the exact outcome, and build a technical roadmap that protects your budget. No guessing, no disappearing acts. THE ARCHITECTURE & STACK: • Frontend: Angular (Enterprise SPAs), React/Next.js, Tailwind CSS • Backend: Node.js, Express, NestJS, Rust • Database & BaaS: MongoDB, PostgreSQL, Supabase, Redis • API & Cloud: REST, GraphQL, AWS, Docker If you are tired of the "freelancer lottery" and want a reliable engagement that focuses entirely on your bottom line, send me an invite. Let's dissect your project.