I architect, build, and ship complete SaaS — RAG chatbots, LangChain agent systems, Next.js apps, and n8n automation pipelines that handle real users and real data.
Live products I've designed, built, and shipped end-to-end — all running in production at nirajiitr.com/products:
| Product | What it does |
|---|---|
| 🔗 QueueSlip | Share a live ETA link with reason + checkpoint updates — privacy-safe, auto-expires, no signup |
| 📚 AI Exam Sprint Planner | Paste your syllabus → day-by-day study plan with AI quizzes, streaks, and readiness scores |
| 🧠 Class2Questions | Upload lecture files → categorised MCQ, short/long-answer questions, flashcards, Anki export |
| 🌫️ AirCare India | Real-time AQI for 800+ Indian cities — PM2.5 breakdowns + AI-powered activity health tips |
| 🏷️ AI Meta Tag Generator | SEO + Open Graph + Twitter Card meta tags with live previews and JSON-LD |
| 📱 Bulk QR Generator | Generate QR codes in bulk from URLs/CSV — colors, logos, ZIP download |
| 📄 Text to PDF | Convert text to formatted, professional PDFs |
October 2025 – Present · Remote
Building scalable web applications and digital solutions for enterprise clients
- Developing and maintaining applications using modern web technologies
- Collaborating with cross-functional teams to implement responsive UI/UX
- Building RESTful APIs and integrating third-party services
- Optimizing application performance and ensuring code quality
- Participating in agile cycles and code reviews
Stack: React.js, Node.js, MongoDB, Express.js, TypeScript, Git, AWS
August 2025 – September 2025 · Remote
AI-driven sustainability platform — automated LCA and digital MRV
- Architected responsive, data-driven UIs with React.js + Tailwind CSS
- Integrated complex APIs and managed server state with React Query
- Built real-time dashboards for carbon tracking and sustainability reporting
- Implemented modern UI patterns and accessibility standards
Stack: React.js, TypeScript, Tailwind CSS, React Query, REST APIs
| 🎓 Degree | 🏫 Institution | 📅 Duration |
|---|---|---|
| B.Tech | IIT Roorkee | 2022 – 2026 |
| Intermediate (Science) | Purnea College | 2020 – 2022 |
| High School | Zila School | 2018 – 2020 |
I write deep-dive engineering articles on nirajiitr.com/blog covering:
- 🧠 RAG architecture & vector retrieval
- 🤖 LangChain agent systems & tool use
- ⚡ Next.js performance & App Router patterns
- 🔧 n8n automation pipelines
- 🏗️ System design for production AI
Also: read the RAG Architecture Guide (2026) — production RAG covering ingestion, embeddings, hybrid retrieval, rerankers, and eval.
- 🤖 Production RAG chatbots — ingestion → embeddings → hybrid retrieval → eval
- 🧠 LangChain agent systems — tool use, memory, multi-step workflows
- ⚡ Next.js SaaS apps — auth, billing, payments, end-to-end
- 🔧 n8n automation pipelines — for real business workflows
🌍 Remote-first · ⏰ IST (GMT+5:30) · 🔒 NDA-friendly