nuvui
Open source React library
Components for the software a business runs on: data tables, forms, charts, schedulers and admin screens, tested for keyboard use and accessibility.
I build production systems, AI-assisted workflows, and small products that solve real problems.
Sajankumar Vijayan
Anyone can get an agent to work once. I build the rest: the retries, the budgets, the snapshots, and the pause where a person gets the final say.
Selected work
NuvRAG
Self-hosted RAG chatbots
One deployment serves many organisations. Each uploads its documents and embeds a chat widget on its site with one script tag, and visitors get answers with citations. Free, with no paid tier.
agenttsm
State machines for AI agents
A small, typed runtime that saves a snapshot after every step. A run that pauses for a human can pick up later, in another process, without repeating the step.
| Version | State | Status | Spent |
|---|---|---|---|
| 1 | draft | running | $0.000 |
| 2 | review | running | $0.021 |
| 3 | draft | running | $0.027 |
| 4 | review | running | $0.048 |
| 5 | ship | waiting "Ship it?" | $0.054 |
resume(runId, "yes")from another process | |||
| 6 | ship | running | $0.054 |
| 7 | ship | done | $0.054 |
Dispatch
AI logistics console
Chat with a Claude agent that re-plans a delivery van's round on a live map. Every change waits for your approval.
Luxury storefront
E-commerce template
An editorial shop with dark mode, a currency switcher, streaming pages and full SEO.
- FastAPI + React templateMulti-tenant SaaS starter. 50 stars, 14 forks.
- ABP ReactReact UI for the ABP Framework. 196 stars, and I'm the second-largest contributor.
- nuvuiThe component library this site is built with: 79 components and 15 add-on packages.
- SitebuilderSelf-hosted, WordPress-style CMS on Next.js. Pages built from 21 blocks, with drafts, scheduling and revisions.
- Nuvraxis pluginsClaude Code plugins that scaffold a production Next.js app, from pull request to Kubernetes.
- NuvRAG platformFastAPI, Celery and pgvector behind NuvRAG, published as public images on Docker Hub.
What you can hire me for
AI agents
Agents and automation pipelines that run in production, with MCP servers, RAG and Claude.
Production-ready MVPs
A first version early-stage startups can put in front of real customers.
Cloud infrastructure
Kubernetes on AWS and Azure, and the pipelines that ship to it.
Audits and performance
A clear read on a codebase, and fixes for what's slowing it down.
About
I'm Sajan. I've been building software for 18+ years, and I now lead projects as a freelance tech lead through Nuvraxis, my consultancy. On the side I'm building Strolio, EU invoicing and payments software for B2B businesses.
- Frontend
- React, Next.js, TypeScript
- Backend
- NestJS, Node.js, Hono, FastAPI, .NET Core
- AI
- Agentic workflows, MCP, RAG, Azure OpenAI, Claude
- Cloud
- Kubernetes, Docker, AWS, Azure, GitHub Actions
- Data
- PostgreSQL, MongoDB, Redis