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I am a passionate and well experienced Web Designer and Developer. My dedication and sincerity towards the Web Development and Coding can get you your next beautiful, responsive and well-organized Website quickly without any bugs.

✅ Solution Architect | Full-Stack | DevOps | Cloud | AI/ML | LLM Apps | IoT Hi, I’m Niladri — a Solution Architect and Full-Stack Developer with 15+ years of experience helping startups, SaaS companies, and enterprises design, build, automate, and scale secure, production-ready software systems. Clients hire me when they need more than a coder. They need someone who can understand the business goal, design the right architecture, build the product, automate infrastructure, integrate AI where it adds value, and keep the system scalable, maintainable, and cost-efficient. I can work as a senior engineer, architect, DevOps consultant, technical lead, or long-term technology partner. 📊 Skill Ratings DevOps & Cloud Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Solution Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Backend & API Engineering – ▓▓▓▓▓▓▓▓▓░ 9/10 AI/ML & LLM Integration – ▓▓▓▓▓▓▓▓░░ 8/10 IoT & Embedded Electronics – ▓▓▓▓▓▓▓▓░░ 8/10 Frontend Development – ▓▓▓▓▓▓▓░░░ 7/10 Mobile App Development – ▓▓▓▓▓▓▓░░░ 7/10 🚀 What I Can Help You With ☁️ Cloud, DevOps & Platform Engineering I design and deploy cloud-native infrastructure using AWS, Google Cloud, Azure, DigitalOcean, Heroku, and hybrid/on-premise systems. AWS: EC2, S3, RDS, Lambda, ECS, EKS, Fargate, DynamoDB, CloudFront, Route 53 GCP: Cloud Run, GKE, Firebase, Cloud SQL, BigQuery, Pub/Sub, AI APIs Azure: Functions, App Services, PostgreSQL, DevOps, cloud migration Core DevOps: Docker, Kubernetes, Helm, Terraform, CI/CD, GitHub Actions, GitLab, Jenkins, Bitbucket Pipelines, monitoring, backups, security hardening, high availability, and cost optimization. 🤖 AI/ML, LLM Apps & Automation I help businesses integrate AI into real products and workflows: LLM applications, OpenAI/AWS AI/Google AI integrations, RAG knowledge-base systems, AI chatbots, document processing, vector search with PostgreSQL/pgvector, recommendation engines, predictive analytics, and workflow automation. My focus is not just adding AI features — I design AI systems that are useful, secure, measurable, and practical. 💻 Full-Stack Web Development I build scalable web applications with clean architecture and maintainable code. Backend: Node.js, NestJS, Express, TypeScript, Python, Django, Flask, FastAPI, Java/Spring Boot Frontend: React.js, Next.js, Vue.js, Angular, admin dashboards, SaaS portals Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, MariaDB, MS SQL I focus on API performance, database design, authentication, authorization, security, testing, and maintainability. 🔗 API Development & SaaS Integrations I build APIs, webhooks, integration layers, and event-driven systems. Experience includes Amazon MWS/SP API/Ads API, QuickBooks Online/Desktop, Xero, FreshBooks, HubSpot, Salesforce, Zoho, Zendesk, Stripe, Twilio, Slack, Asana, REST, GraphQL, Webhooks, Microservices, and Event-driven Architecture. 📱 Mobile App Development React Native, Flutter, and PWAs with real-time chat, push notifications, payments, GPS tracking, offline sync, dashboards, and cloud backend integration. 🌐 IoT & Embedded Systems Embedded Linux, Buildroot, Arduino, ESP, Raspberry Pi, RTOS, FPGA, Petalinux, RFSoC, ZCU111, XRF8, I2C, SPI, UART, TCP, MQTT, sensor integration, and firmware-to-cloud-to-dashboard platforms. 🧠 Technical Leadership I support teams with architecture, cloud review, code/PR review, CI/CD setup, security planning, database/API design, bottleneck resolution, team grooming, scalability planning, and engineering best practices. 🌟 Why Clients Hire Me ✔️ 15+ years of hands-on software, cloud, DevOps, AI, and IoT experience ✔️ Strong mix of architecture, development, automation, and technical leadership ✔️ Ability to work independently or lead a technical team ✔️ Experience with SaaS, fintech, e-commerce, AI, cloud, API integrations, and IoT systems ✔️ Practical mindset: I design systems that can be built, deployed, scaled, and supported ✔️ Strong focus on clean code, security, documentation, automation, and maintainability I don’t just deliver code — I help you build a reliable product, scalable platform, and stronger technical foundation. ⭐ Client Feedback “Nil headed up a full backend solution including RESTful API and AWS cloud setup. He is knowledgeable, understands your needs, and delivers creative, high-quality solutions.” — Douglas Stirling “Nil is an excellent developer — quick to grasp requirements, easy to communicate with, and always delivers well-tested, first-class work.” — Sat Sindhar “Niladri is a highly experienced full-stack programmer with thorough knowledge across technologies. I am extremely satisfied with his services.” — Vishal Agarwal “Niladri is the best at what he does. Very easy to communicate with, delivers flawless work, and provides great support after the job is done.” — Muzaffer Selimbeyoglu 📌 Background Degree in Computer Science CCNA | RHCE Diploma in Computer Hardware & Electronics GitHub Portfolio: fuzonmedia

Most projects don't fail because of missing features. They fail because of early decisions nobody questioned — how data flows, how pieces talk to each other, who owns what. Those shortcuts feel fine for the first month. Then they get expensive. I get called in to fix that, or to make sure it never happens. Before I write anything, I think about: will this still make sense in two years? Will it break under real traffic, not test traffic? Will the next engineer understand it without asking me? Most freelancers optimize for finishing the ticket. I optimize for the system still being sane six months later — which usually means asking harder questions upfront and building less, not more. If you want someone who just writes code to spec, I'm probably not the cheapest option. If you want someone who catches the expensive mistake before it's made, that's what I do.

As a full-stack developer with 2.5+ years of experience and expertise in Django, FastAPI, ReactJS, Selenium, and Pytest, I deliver high-quality, scalable web applications. With a strong focus on performance, security, and user experience, I have successfully worked on various projects, including custom APIs, e-commerce sites, dynamic dashboards, and web scraping solutions. My experience also includes creating robust automated testing workflows using Pytest to ensure application reliability and efficiency. I hold a degree in Computer Science and am passionate about crafting solutions that meet client needs while ensuring seamless integration, efficiency, and precision. Let’s work together to bring your vision to life!

Hey, I'm a Senior Backend Developer with 6+ years of experience. My skills are: - Python, JavaScript, TypeScript, Rust, Kotlin - DevOps (Docker, AWS, GCP, CI/CD, Github Actions, Redis, Ansible, etc) - Database (PostgreSQL, MongoDB, TimescaleDB, MySQL, DynamoDB, DB Migration, etc) - Integrating web3 with different platforms - Excels at ETH, SOL, Hyperliquid blockchain integration - AI Agent Flows and automation tasks. - Developing Discord, Reddit, Twitter, Telegram, Twitch or bots for any other platform. - Data Mining and Data Processing

In 10+ years, I have shipped products used by real businesses across AI automation, SaaS platforms, mobile apps, and enterprise integrations. ➝ Built an enterprise AI agent orchestration platform supporting GPT-4o, Claude, and Gemini with real-time monitoring, governance controls, and automated workflows across Marketing, HR, Supply Chain, and Customer Success. ➝ Built production n8n and Make automation systems connecting Xero, Shopify, CRMs, and third-party APIs with webhook-driven workflows, idempotency engines, and zero-error track records since deployment. ➝ Built multi-tenant SaaS platforms with schema-based data isolation, RLS policies, role-based access control, Stripe subscription billing, and full admin dashboards running in production. ➝ Integrated OpenAI, Claude, Azure OpenAI, and LangChain into real products, building AI agents, RAG pipelines, document processing systems, and agentic voice workflows using Retell.ai. ➝ Engineered custom NLP engines with 93.3% entity accuracy, sub-20ms responses, and scalable processing across 500+ products in a 5-step state machine. ➝ Developed React Native and Flutter apps with real-time features, third-party payments, and map integrations, delivered simultaneously on iOS and Android with 100k+ combined users. ➝ Built and integrated complex third-party systems including DocuSign contract workflows, IMAP email ingestion, Xero accounting automation, government compliance APIs, G2A catalog sync, and multi-system automation pipelines. ➝ Worked across SaaS, healthtech, logistics, e-commerce, sports, fintech, real estate, and AI automation, adapting quickly to domain requirements without hand-holding. ➝ Maintained a 100% Job Success Score with Top Rated Freelancer, across 150+ completed Upwork projects with long-term client relationships and on-time delivery. My stack covers the full product: ➝ AI Automation & LLM Integrations • OpenAI, Claude, Gemini API, LangChain, Pinecone, FAISS, RAG Architecture • AI Agents, n8n, Make, Zapier, Retell AI Voice Agents, Workflow Automation ➝ Frontend Development • React, Next.js (App and Pages Router), Vue.js, TypeScript • Tailwind CSS, shadcn/ui, Redux, React Query, Framer Motion ➝ Backend Development • Node.js, NestJS, Express.js, Python, Django, FastAPI, Flask • Supabase, Firebase, REST APIs, GraphQL • WebSockets, Socket IO, JWT and OAuth ➝ Mobile Development • React Native (Expo & CLI), Flutter • Real-time chat & video (Twilio, Agora, WebRTC) • Stripe, Maps, Push Notifications ➝ Database & Cloud • PostgreSQL, MySQL, MongoDB, Redis • AWS (S3, EC2, Amplify), Google Cloud I work best with founders and technical leads who need one reliable engineer to own the build end-to-end. I communicate clearly, flag blockers early, and treat your deadline as mine. Send me a message with your requirements, and I will outline your technical roadmap within hours. Bhavin Sen