Things I've built that people actually use.
coffeecoach.app
Most coffee brewing advice online is scattered and contradictory. I ingested high-quality brewing data, made a RAG pipeline on top of it, and built an agentic coaching system based on that data — LLM orchestration with feedback loops that adapt recommendations based on user input.
Wrapped it all in a full-stack AI coaching app.

youtube-rag-scraper
YouTube has some of the best domain-specific knowledge on the internet, but it's locked in video format, impossible to query or reuse. This pipeline bulk-scrapes transcripts, processes them, and structures them into a searchable knowledge base for RAG systems. Handles chunking, embedding, and retrieval quality out of the box.

buildinpublic-x
Most developers don't build in public because posting updates is friction. This simple GitHub Action reads your commit history over a few days, generates a thread via LLM, and posts to X and Bluesky automatically — no server, no backend, no SaaS. Lives entirely inside your repo.

flux-rag
Most RAG systems ship without evaluation causing hallucinations to go undetected and retrieval quality degrading silently. FluxRAG inverts that: evaluation harness first, optimisation second. Drop in any file type across 10 formats, run a parameter sweep across chunking strategies and embedding models, and get a ranked benchmark report before you touch production.
Tracks latency, cost per query, and hallucination rate across every config because retrieval quality and cost tradeoffs shouldn't be assumptions.

splitwala
Can't get your friends to install the bill splitting app? This WhatsApp chatbot makes it a single command — /split, /paid, /balances. Lives inside your WhatsApp group. No app to download, no account to create. Built on the principle that the best UX is the one that gets out of the way.

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Get in touch
I'm open to AI engineering roles, contract work, and interesting problems.
If something I've built resonates, drop me a message!
Based in Delhi, India.
Open to remote.
© 2026 Hardeep Singh