Hire the Best Nest.js Freelancers
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⭐ 5.0 × 2 · Repeat International Client 🏆 Senior Full-Stack Developer 💎 2.5+ Years in Production SaaS & Platforms A full-stack developer who builds systems that work in production, not just in demos. My code ships, scales, and doesn't break at 2 AM. Recent Work: ✔ Fightly (France 🇫🇷) — Backend + admin panel for a real-time sparring-partner platform. NestJS + PostgreSQL + PostGIS geolocation matching, SocketIO real-time layer, multi-role JWT auth. Built the full NextJs admin dashboard. MVP delivered in 10 working days, then hired again for the full platform — 258 hours across two contracts. Now live in production. ⭐ 5.0 on both. ✔ ScrapeX — Sole backend architect across a 7-module marketplace super-app: multi-vendor listings, order/booking workflows, wallet + payments (Cashfree), and a configurable coupon engine. NestJS + PostgreSQL + Redis. Clean module boundaries — frontend integration without rewrites. ✔ Link Drive — Used-car marketplace backend. Full role-based access across 5 user types (Admin, Manager, Inspector, Staff, Customer), a 6-stage inspection pipeline, OTP auth, and dynamic filtering. NestJS + PostgreSQL + NextJs. ✔ E-Commerce Performance (Medkart) — Cut product page load from 2.2s → 50ms (98% faster) with a Redis caching + invalidation strategy. Real measured result. 🚀 Tech Stack Backend: NodeJs, NestJs, Express, Laravel Frontend: React, NextJs Database: PostgreSQL, PostGIS (geolocation apps) Real-time & Infra: SocketIO, Redis, Docker Cloud & Storage: AWS, Cloudflare R2, Supabase Auth & Security: JWT, OTP, OAuth, Rate Limiting Observability: OpenTelemetry, SigNoz Tools: GitHub, Bitbucket, Jira, Slack 💬 What Clients Say: "I had an excellent experience working with Ishwar. From the beginning, he was very professional, responsive, and easy to communicate with. He handled the development very efficiently (NextJs, Supabase, deployment) and took initiative on SEO setup, sitemap submission, and overall structure of the application." — Louis Valentin, Fightly MVP (France 🇫🇷) ⭐ 5.0 "Very very good job from Ishwar Trada — very professional, very fast delivery, and high level work!" — Louis Valentin, Fightly Full Platform (France 🇫🇷) ⭐ 5.0 How I Work: ✅ Daily updates on Slack / Jira ✅ 30+ hours/week availability ✅ Clear documentation — you're never locked in ✅ 2-hour response during working hours Interested? Send me a message with your project details — I'll review and share how I'd approach it.

Senior Backend Engineer | Node.js • NestJS • TypeScript I am a Senior Backend Engineer with over 6 years of experience building, scaling, and operating production systems across Fintech, E-commerce, Enterprise ERP, and AI platforms. I specialize in turning complex business requirements into high-performance, maintainable microservice architectures. 🚀 My Expertise Includes: - Architectural Leadership: Led a zero-downtime migration of a legacy Visual Basic ERP to a NestJS and Oracle architecture for a NASDAQ-listed US company (inventory, rentals, warehouse, logistics, barcode, real-time sync, high-speed catalog search). - Performance Engineering: Reduced API latency by 90-92% (from around 1.5s down to 50-150ms) through database indexing, schema design, and query optimization, and cut infrastructure cost by 50%+ via database normalization and server tuning. - High-Throughput Systems: Built background job pipelines processing 10,000+ jobs every 10 minutes and 600,000 to 700,000 jobs per hour at near-zero error rate using Laravel Horizon. - Financial Systems: Integrated major payment gateways (Stripe, Stripe Connect, Razorpay, Actum ACH, Cosmo, NetBilling, PayPal) with subscription billing and marketplace payouts, and built backend for StockPe, a fintech platform serving 300,000+ users, ranked #2 Product of the Day on Product Hunt. - Integration & Scaling: Integrated 3rd party services (Twilio, SendGrid, Brevo, OpenAI, Gemini) and scaled a live creator platform to roughly 50,000 concurrent users on AWS. - AI Systems: Built the backend and multi-agent orchestration for KitchenCloud.AI, routing requests across 6 specialized sub-agents on NestJS with vector search and persistent memory. - Infrastructure & DevOps: Docker, serverless (AWS Lambda), AWS (EC2, S3, SQS, IVS, MediaConvert), DigitalOcean, and Vercel with zero-downtime deployments and CI/CD. 🛠 Technical Stack: - Languages: TypeScript, Node.js,JavaScript, PHP. - Frameworks: NestJS (Expert), Express.js, Laravel. - Databases: PostgreSQL, Oracle, MySQL, MongoDB, Redis, DragonflyDB. - Messaging & Real-Time: Kafka, RabbitMQ, BullMQ, Laravel Horizon, Socket io, gRPC, Event-Driven Architectures. 📊 Notable Achievements: - Reduced API latency by 90-92% (from around 1.5s to 50-150ms) through indexing, schema design, and query optimization. - Processed 600,000 to 700,000 background jobs per hour (10,000+ every 10 minutes) at near-zero error rate. - Cut infrastructure cost by 50%+ through database normalization and server optimization. - Delivered a zero-downtime Visual Basic to NestJS + Oracle ERP migration for a NASDAQ-listed company. - Built backend for a fintech serving 300,000+ users (StockPe, #2 Product of the Day on Product Hunt). - Top Rated Plus on Upwork with 100% Job Success and 2,215+ hours billed. I thrive in remote, high-ownership environments and care about clean, maintainable code that holds up in production and aligns with long-term business goals. Let's build scalable backend systems that help your business grow.

🟢𝗝𝘂𝘀𝘁 𝗶𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯!🟢 || 𝗜𝗡𝗗𝗘𝗣𝗘𝗡𝗗𝗘𝗡𝗧 𝗙𝗥𝗘𝗘𝗟𝗔𝗡𝗖𝗘𝗥 || 𝗜𝗠𝗠𝗘𝗗𝗜𝗔𝗧𝗘 𝗝𝗢𝗜𝗡𝗘𝗥 || 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗶𝗻 𝗘𝗦𝗧, 𝗖𝗗𝗧 & 𝗘𝗗𝗧 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲𝘀 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 𝗳𝗼𝗿 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 I help agencies, startups, and service businesses automate operations, build intelligent systems, and develop scalable software using AI, automation, and modern web technologies. With 8+ years of experience in full stack development and workflow automation, I specialize in creating reliable, production-ready solutions that improve efficiency, reduce costs, and support long-term growth. My focus is on building systems that work in real business environments not fragile demo setups. 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗮𝗻𝗱 𝗧𝗼𝗼𝗹𝘀 Automation: n8n, Zapier, Make, GoHighLevel AI: OpenAI API, Claude, Google AI Studio, LangChain, RAG Systems Frontend: React, Next.js, TypeScript, TailwindCSS Backend: Node.js, Supabase, Firebase, Express Databases: PostgreSQL, MongoDB, MySQL Cloud: AWS, Vercel, Docker Low-Code: Lovable, Replit, Claude Code Payments: Stripe 𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 • Built AI-driven CRM and automation systems for agencies • Developed voice and chat assistants for service businesses • Created multi-tenant SaaS platforms with billing and analytics • Developed and customized Base44-style applications for startups • Automated marketing, onboarding, and reporting workflows • Integrated AI tools into existing enterprise systems Keywords: AI Automation Expert | AI Workflow Engineer | SaaS Developer | SaaS Application Developer | Full Stack Developer | Startup MVP Developer | Rapid MVP Builder | Base44 App Developer | Lovable Developer | No-Code App Builder | Low-Code Developer | Vibe Coding Specialist | AI-Assisted Development | Zapier Specialist | n8n Expert | Make Automation | GoHighLevel Developer | CRM Automation Expert | Business Process Automation | API Integration Specialist | Webhook Developer | OpenAI API Developer | ChatGPT Integration | Claude AI Developer | Google AI Studio Developer | AI Agent Builder | RAG System Developer | Voice AI Developer | AI Chatbot Developer | Supabase Developer | Firebase Developer | PostgreSQL Developer | MongoDB Developer | Stripe Integration Expert | Subscription Billing Developer | React Developer | Next.js Developer | Node.js Backend Developer | Cloud App Developer | AWS Developer | Vercel Deployment | Docker Engineer | Automation Consultant | System Integration Engineer | Digital Transformation Specialist | Agency Automation Expert | Lead Automation Specialist

𝗜𝗻𝘀𝗽𝗶𝗿𝗲𝗱 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗜𝗜𝗧 𝗚𝘂𝘄𝗮𝗵𝗮𝘁𝗶 𝗚𝗿𝗮𝗱𝘂𝗮𝘁𝗲 | 𝟱 𝗬𝗲𝗮𝗿𝘀 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 ✅ IIT Guwahati Alumnus with 5 Years Enterprise & AI Experience (TCS, HCL Technologies) ✅ Expert in Advanced AI Pipelines, Agentic Workflows, and GraphRAG Architecture ✅ Skilled in Python, FastAPI, Node.js, NestJS, Next.js, and Cloud Infrastructure ✅ Available 30+ hrs/week | Dedicated, reliable, and highly responsive ✅ Goal: Build a 100% Job Success Record on Upwork through top-tier engineering 🔴 I may be new to the Upwork platform, but I bring half a decade of production-level engineering experience scaling systems for global tech giants. 🔴 Transitioning to full-time freelance AI development investing my full focus, speed, and enterprise standards into your project. 🔹 AI & LLM Skills AI Agents / Agentic Workflows: LangGraph, CrewAI, AutoGen, CrewAI Multi-Agent setups Advanced RAG: GraphRAG, LlamaIndex, Knowledge Graphs via Neo4j, Hybrid Vector Search Frontier Models: Claude 3.5 Sonnet/Opus, OpenAI GPT-4o, Gemini 1.5 Pro, Llama 3.2 Vision Edge AI & SLMs: Ollama, Llama 3.1/3.2, Phi-4 (Quantized deployment for cost optimization) Voice & Multimodal AI: OpenAI/Gemini Native Realtime WebSockets APIs (Low-latency audio) Observability & Vector DBs: LangSmith, Pinecone, Qdrant, Milvus, Chroma DB 🖥️ Backend Skills Python (FastAPI, Flask) | Node.js, Express.js, Nest.js Real-Time Data Streaming: Kafka, Redis Streams, WebSockets API Development: Secure RESTful APIs, gRPC, and GraphQL Databases: PostgreSQL, Supabase, MongoDB, Redis (Semantic Caching) DevOps & Cloud: Docker, AWS (EC2, Lambda, S3, Bedrock), Vercel 🌐 Frontend Skills React.js, Next.js 15 (App Router, Server Components) TypeScript, Redux Toolkit, Tailwind CSS Building highly responsive, secure, data-driven AI SaaS Dashboards 🛠️ Tools & Technologies ML libraries: Scikit-learn, Pandas, NumPy LLM Fine-tuning & Optimization: LoRA, PEFT, Hugging Face Hub Version Control & CI/CD: Git, GitHub Actions 🌟 Why Work With Me? I am building my freelance portfolio after 5 years in enterprise engineering. I deliver fast, communicate clearly, and charge fairly while I establish my Upwork presence. Every project gets my full attention. Warm regards, Aman

I'm Mayur, a Senior Full-Stack Developer with 15+ years of experience building SaaS platforms, custom web applications, APIs, business systems, dashboards, and scalable software products. Technologies ✔ React.js, Next.js, TypeScript, JavaScript ✔ Node.js, Express.js ✔ PHP / Laravel ✔ Python (FastAPI, Django) ✔ .NET / ASP.NET Core ✔ React Native, Flutter ✔ PostgreSQL, MySQL, MongoDB, SQL Server ✔ Firebase, Supabase, Redis ✔ REST APIs, WebSockets ✔ AWS, Azure, GCP, Docker What I Build ✔ SaaS Platforms ✔ Custom Web Applications ✔ Admin Panels & Dashboards ✔ E-Commerce Platforms ✔ API Integrations ✔ CRM & Business Systems ✔ Marketplace Platforms ✔ MVP Development Why Work With Me ✔ 15+ Years Experience ✔ Clean & Scalable Code ✔ Strong Problem Solving ✔ Clear Communication ✔ Long-Term Support 🤝 Let’s Work Together If you're looking for a React Developer, Next.js Developer, Node.js Developer, Laravel Developer, Python Developer, .NET Developer, or Full-Stack Developer, I'd be happy to discuss your project. 📩 Feel free to message me — let’s discuss your project.

Hi, I'm 𝐌𝐢𝐭𝐮𝐥 𝐏𝐚𝐧𝐜𝐡𝐨𝐥𝐢 👋 I'm a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with 8+ years of experience helping startups, founders, and businesses build scalable SaaS platforms, custom web applications, dashboards, admin panels, and AI-powered solutions. 🏆 Top Rated Freelancer ✅ 100% Job Success Score ✅ $20K+ Earned on Upwork ✅ 27 Successfully Completed Projects ✅ 1,368+ Hours Worked ✅ 8+ Years of Professional Experience I help businesses turn ideas into production-ready products using 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭, 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋, 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞, 𝐀𝐖𝐒, 𝐚𝐧𝐝 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬. Whether you're building an MVP, launching a SaaS platform, modernizing an existing application, or scaling your product, I can handle the complete development process—from frontend and backend development to APIs, databases, deployment, optimization, and long-term support. From idea to deployment, I take full ownership of your project and build secure, scalable, and production-ready applications designed for long-term growth. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 → SaaS Platforms → MVP Development → Custom Web Applications → Admin Dashboards → Client Portals → Internal Business Tools → AI-Powered Applications → Marketplace Platforms → CRM & ERP Systems → Real-Time Applications → API Development & Third-Party Integrations → Payment Gateway Integrations 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✦ React ✦ Next.js ✦ JavaScript ✦ TypeScript ✦ Tailwind CSS ✦ Material UI ✦ Bootstrap ✦ Redux Toolkit ✦ Responsive Web Design ✦ SSR / SSG / ISR ✦ Performance Optimization ✦ Progressive Web Apps (PWA) 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✦ Node.js ✦ Express.js ✦ NestJS ✦ REST APIs ✦ GraphQL ✦ Authentication & Authorization ✦ Webhooks ✦ Background Jobs ✦ Real-Time Features ✦ Role-Based Access Control (RBAC) ✦ Microservices 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐂𝐥𝐨𝐮𝐝 ✔ PostgreSQL ✔ MongoDB ✔ MySQL ✔ Supabase ✔ Firebase ✔ Redis ✔ AWS ✔ Azure ✔ Google Cloud ✔ Docker ✔ CI/CD ✔ Vercel 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 → OpenAI API → ChatGPT Integrations → AI Chatbots → AI Agents → Workflow Automation → n8n → 𝐌𝐚𝐤𝐞.𝐜𝐨𝐦 → Zapier → LangChain → RAG Applications → Custom AI Solutions 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 ✔ End-to-End Product Ownership ✔ Clean, Scalable & Maintainable Code ✔ Business-Focused Development ✔ Fast Communication ✔ On-Time Delivery ✔ Transparent Project Updates ✔ Long-Term Technical Support ✔ Reliable Technical Partner I don't just write code. I help clients make the right technical decisions, reduce development risks, and build scalable products that support long-term business growth. 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮'𝐥𝐥 𝐆𝐞𝐭 ✔ Production-Ready Applications ✔ Modern & Responsive User Experience ✔ Secure APIs & Database Design ✔ Scalable Backend Architecture ✔ High-Performance Web Applications ✔ SEO-Friendly Development ✔ Clean & Maintainable Code ✔ Long-Term Support After Launch 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈'𝐯𝐞 𝐖𝐨𝐫𝐤𝐞𝐝 𝐖𝐢𝐭𝐡 ✦ SaaS ✦ Healthcare ✦ FinTech ✦ E-Commerce ✦ Education ✦ Real Estate ✦ Logistics ✦ Travel ✦ AI & Automation ✦ Startup Products 𝐌𝐲 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 ① Understand your business goals ② Plan the best technical solution ③ Build scalable frontend and backend systems ④ Test thoroughly ⑤ Deploy securely ⑥ Optimize performance ⑦ Provide ongoing support 𝐋𝐞𝐭'𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 If you're looking for a 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who can take ownership of your project from idea to deployment, I'd be happy to help. 📩 Send me a message or invite me to your project. I'll review your requirements, recommend the best technical approach, and help turn your idea into a scalable, production-ready application.