Rajeev Gill

I build practical software around AI, data, analytics, and adtech.

My work sits between product thinking and implementation, with a bias toward systems that make real work less messy.

Based in London. Interested in useful AI, clearer measurement, and software that holds up outside a demo.

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Selected projects

Things I have built

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Local LLM Lab interface showing the installed-model inventory and measured comparisons.
AI & Agent Systems

Local LLM Lab

A measured field guide to every local model installed on Apple Silicon.

PythonReactVite
Open GTM Index interface showing category leaders and ranked open-source tools.
Martech & Measurement

Open GTM Index

A transparent guide to open-source go-to-market software.

TanStack StartReact 19TypeScript
Hackathon Voting App interface showing the public scoreboard and consent-aware controls.
Products & Operational Tools

Hackathon Voting App

A production-ready single-screen judging app built for a live hackathon room.

Next.js 14ClerkPrisma

Recent writing

Notes from the work

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Agentic data collection and warehousing

The full first-party measurement stack — consent, browser and server-side GTM, collection endpoints, BigQuery modelling, quality checks, privacy and activation — with an honest account of when the heavy stack is the wrong answer.

The multi-agent journey: what survived contact with reality

The chronological, evidence-labelled history of one rig's multi-agent architecture — what each layer promised, what the traces said, what was kept, and what was deliberately deleted — with the current recommendation stated plainly.

Have something useful to build?

I am always interested in thoughtful software, analytics, and AI work where the practical details matter.

Email me