Building software for a more sustainable and equitable future.

I'm a senior software engineer with a decade of experience building successful software systems and the teams that ship them, often from scratch. I want to put that expertise towards sustainability and humanitarian efforts with other passionate individuals.

Portrait of Tim Cronshaw, senior software and AI engineer based in Santa Barbara, California
Selected work
Beni — project by Tim Cronshaw

Beni

Helped grow MAU 15x to 150k+ across a multi-platform product surfacing secondhand alternatives on thousands of retailer sites. Built the data layer behind ~350M indexed products and a multi-modal two-tower recommender in TensorFlow for sub-second personalized search, plus LLM-powered features over a Milvus vector store.

DjangoReactSwiftTensorFlowMilvus
Apeel — Research Platform — project by Tim Cronshaw

Apeel — Research Platform

Joined as the first software engineer at a food-waste startup and grew a 15-person cross-functional team. Architected a distributed data-collection platform spanning 50+ global research facilities, and built embedded software for custom research instruments (CO₂ chambers, hyperspectral imagers, firmness probes) plus a time-lapse image-analysis pipeline.

PythonDjangoPostgresAWSC++
Audio Flash — project by Tim Cronshaw

Audio Flash

Solo shipped an audio-only flashcards app across native iOS (SwiftUI), native Android (Kotlin), and a Next.js web client — all sharing a Firebase/Python API layer. Localized into four languages and featured on AppleVis for its accessibility work.

PythonTypeScriptSwiftKotlinFirebase
Memigo — project by Tim Cronshaw

Memigo

Solo shipped a language learning app to generate Pimsleur-style courses on demand. FastAPI + Postgres backend on GCP, a Next.js front-end, Stripe for billing, and the Anthropic API (via Instructor) doing the pedagogical heavy lifting — with an LLM-as-judge evaluation pipeline that keeps generated lesson transcripts improving over time.

FastAPIPostgresNext.jsAnthropicGCPStripe
Pure Tone Therapy — project by Tim Cronshaw

Pure Tone Therapy

Solo shipped a free SwiftUI iOS meditation app built around Solfeggio frequencies, with seamless AVFoundation playback. Published on the App Store as a small, quiet project to support the Pure Tone Therapy business.

SwiftAVFoundation
Flashcards to Audio — project by Tim Cronshaw

Flashcards to Audio

Solo shipped a utility that turns a deck of flashcards into audio files you can listen to anywhere. Firebase backend with Python service functions, a Next.js front-end, Stripe billing, and GCP text-to-speech.

PythonFirebaseNext.jsStripe
Get in touch

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