I'm Hardeep, AI agent builder && Mac app maker.
Here's a quick intro about me && what I love to do
From the lab to the internet
I studied Chemical Engineering at IIT Delhi — where I learnt to think in systems and optimize under constraints. What I didn't expect was that the most interesting problems I'd encounter were messy, unstructured, and sitting inside data. That's what pulled me toward software.
Now I build AI products that take that mess and make it usable — pipelines, tooling, apps.
Building things I actually want to exist
I like building things that solve problems for me, and seeing them become products that other people use. CallLane started because macOS turned my music down on every call. MacLane started because I wanted cloud agents to use my Mac while I'm away from the desk. Before those, CoffeeCoach took off on Reddit without a single paid promotion, and youtube-rag-scraper hit 78 GitHub stars because a lot of people had the same frustration with video content being impossible to query.
Life beyond the screen
I play chess obsessively. I played football every week until I tore my ACL last year. Still in recovery, still bitter about it. I befriend every mountain dog I meet. And I'm on an ongoing, probably never-ending hunt for the best chhole bhature in Delhi.
Building AI agents
I'm Team Lead and Senior AI Engineer at Squidgy AI, a UK startup. I lead the AI team and build the multi-agent systems we run for clients. I built Concierge, an MCP service that indexes 9 repos into a knowledge base, so agents ask what lives where instead of re-reading code. I also built SiteBuddy, an agent that rebuilds a website in 2-3 minutes for under $1 in token cost. Around 50 sites shipped.
Outside work I study how agents are built: harnesses, evals and prompts. I turn the best talks into visual lessons on Study and post a daily Claude Code 101 series on X. On evenings and weekends I build MVPs for founders.
My work history and education timeline.
4142 Ltd / Squidgy AI
2026 – Present
4142 Ltd / Squidgy AI – Senior AI Engineer
2026 – Present
Full-time contract, remote, UK hours. Built Concierge, an MCP service that indexes 9 repos into a DeepWiki-style knowledge base — agents ask what lives where instead of re-reading code, saving 50-100k tokens per Claude session. Index rebuilds on every push.
Built SiteBuddy, an agent that rebuilds an existing website in 2-3 minutes for under $1 in token usage. Shipped around 50 sites for real businesses.
Stealth SaaS
2026 – Present
Stealth SaaS – Sole Engineer (Freelance)
2026 – Present
End-to-end ownership of a full-stack SaaS product for a UK-based client — architecture, build, and production deployment. Scope includes AI-powered features and agentic workflows. Client and product details under NDA.
Coffee Coach
2025 – Present
Coffee Coach – Founding Engineer
2025 – Present
Built Coffee Coach 0 to 1 — a full-stack AI coaching app for specialty coffee brewers with personalised feedback via RAG pipelines and agentic feedback loops. 65 daily active users acquired organically via Twitter/X and Reddit with zero paid promotion.
Now co-founding and productizing with a product partner, building towards commercial launch. Stack: Next.js on Vercel, FastAPI on Hetzner VPS with Docker, Nginx, Certbot, PostgreSQL.
CovidWin
2021
CovidWin – Operations Lead
2021
Co-built a COVID-19 resource platform from zero to full operations in 48 hours during India's second wave — 15 states, 50 cities, 10,000 verified life-saving resources.
Led volunteer coordination across 8 states, managing 4,000 volunteers from partner organisations. Built a 15-minute automated data sync pipeline using Google Sheets API with deduplication and multi-source aggregation.
Digital Marketing
2018 – 2024
Digital Marketing – Freelance
2018 – 2024
Independent client work across digital marketing — SEO, content, and campaign management. Later years included lightweight process automation, leading to a full pivot into software and AI engineering in 2025.
IIT Delhi
2013 – 2018
IIT Delhi – Chemical Engineering
2013 – 2018
Chemical Engineering at IIT Delhi providing the analytical foundation for systems thinking and constraints-based problem solving.
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