Sayyed Arib
Hussain_

A booking platform for a hostel owner I met while staying there during college — my first large solo build. 150+ bookings and about INR 75,000 in its first two weeks. The lesson I actually took away was about requirements: scope kept moving with the client's mood until I stopped and froze it, sketched the UI on paper, then designed the database.

The hard part was double-booking. Two people could hold the same room while a payment sat unverified, so I used a database transaction to make sure only one booking can ever lock a room, even under concurrent requests.

• aligarhhostel.com
• repo

A senior of mine started this mentor–mentee platform and I joined a few weeks in, during my fifth semester. I built the mentor registration page and Google login, then took over more of the core engineering — starting with the Razorpay payment gateway — as he moved to the business side. We onboarded 50+ mentors and 20+ mentees, and the community page still has 6,300+ followers on LinkedIn.

It was picked for GirlScript Summer of Code, which brought in a wave of first-time contributors. I spent much of that time reviewing their PRs and walking them through small mistakes — the same patience Zulip's maintainers had shown me. The project is shut down now; Topmate took that market.

• repo
• LinkedIn page

A no-code platform for building AI assistants: upload a knowledge base, tune the retrieval pipeline, test it live, then paste one <script> tag into your site. I designed the LLM orchestration layer and the backend, and built the dashboard around it — 22 routes covering auth, onboarding, a multi-source knowledge base, analytics, a WebSocket playground, and a theming studio.

The part I'd defend in a review is the state boundary. Server state lives in TanStack Query with explicit invalidation; client-only state lives in a persisted Zustand store. Neither leaks into the other, so no component ever calls Axios directly — one hook per resource owns its query keys.

The whole RAG pipeline is configurable from the UI at runtime: chunk size, overlap, splitter, PDF parser, embedding model, LoRA/QLoRA parameters, temperature, and the system prompt — every field validated with Zod, which also infers the TypeScript types. Auth rides on an HTTP-only cookie, so the token is never readable from JavaScript. CI runs lint, tsc --noEmit, Vitest, and a production build on every push; the tests guard the things that actually bite, like an https:// page deriving wss:// instead of a mixed-content ws://.

• repo

A way to play computer games with your body instead of a keyboard. MoveNet reads your pose from the webcam and maps it to game input — raise your left hand, the character turns left — so time at the machine costs you some movement instead of none. Pose detection in TensorFlow and OpenCV, input synthesis with PyAutoGUI, Next.js front end.

• repo
• demo video
• presentation

An end-to-end pipeline rather than a demo: collected and labelled a 1,000-sample voice dataset, trained and evaluated a speech-command classifier, then deployed it to an Arduino for real-time inference — switching lights on a spoken command.

• repo