Alessio Petrin
Product engineer · London — one material, five forms
Open to part-time & contract
Most engineers hand you a part. I forge the whole thing.
Seven years, nine products, one pair of hands.
Native iOS & Android
Swift and SwiftUI, Kotlin and Jetpack Compose — I built nHabit's Android app solo and co-built its iOS app, replacing the React Native app I had shipped first, with Fastlane release lanes and a 2,400-test safety net.
Native in both stores · 2,400 Android tests · SwiftUI and Jetpack Compose.
Web platforms that rank and convert
Next.js applications engineered server-first: semantic, fast and obsessive about Core Web Vitals — from CMS-driven brand sites to multi-tenant SaaS with billing and auth.
App Router, server-first · Core Web Vitals as a feature · SaaS, CMS, e-commerce.
The systems behind the screens
Go microservices with domain-driven boundaries — nine services on one shared runtime library, about 272k lines with 9,100 test functions, PostGIS geospatial data and Redis running nHabit in production.
Nine Go services · 9,100 test functions · PostGIS and Redis in production.
Infrastructure as code, all of it
AWS estates defined entirely in CDK — 52 stack types across isolated staging and production accounts, a passed disaster-recovery drill, and error tracking and infra monitoring I built in-house.
52 CDK stack types · isolated staging and production · a passed DR drill.
AI as product, not demo
LLM extraction that collected 17,980 live homes from 2,212 agent websites in one national run, an XGBoost ranker behind a statistical ship gate, commute isochrones and a 26-tool chat assistant.
17,980 homes in one national run · XGBoost ranking · a 26-tool assistant.
Three pieces, in the maker's own hand.
nHabit
2024 — present · PropTech · AIAn AI-powered rental platform taken from an empty repository to native iOS and Android apps, a web app and a Stripe-billed B2B SaaS — nine Go services, a national listings-acquisition pipeline, an AI assistant and the whole AWS estate. About 9,000 of its 9,800 commits are mine.
Read the case studynHabit Agent Platform
2026 · PropTech · B2B SaaSThe revenue side of nHabit, built from zero between June and October 2026: a self-service portal for estate agents on Go partner and billing services, with Stripe subscriptions live in production, CRM integrations, a leads inbox and a public REST and webhook API.
Read the case studyMealner
2026 — present · HealthTech · NutritionMy own company. A nutrition app that plans your eating, logs it by barcode, photo or plain language, and quietly re-plans the rest of the day when life intervenes — with an honest confidence label on every number. Swift on the device, seven Go services and a 6.7M-food catalogue behind it.
Read the case studyAevenna
2026 — present · Productivity · WellbeingMy second company. An offline-first iOS app that helps people turn time into a calm, intentional path toward the life they want: goals decompose into time-estimated tasks that flow onto a daily timeline, synced across devices by a Go service, with end-to-end-encrypted health tracking.
Read the case studyCaelestis Visions
2026 · Culture · Events · E-commerceA bilingual events platform for a cultural association that stages concerts and cinema in Padova: constellation-drawn art direction, Stripe ticketing that issues signed QR tickets, a shop, and a permissioned CMS, on serverless AWS defined in CDK.
Read the case studyAetherCore
2026 · E-commerce · 3DA French-first storefront for custom gaming and creator PCs, centred on a React Three Fiber configurator that checks part compatibility as you build, with Stripe checkout, customer accounts, saved builds and an admin dashboard — all defined as code on AWS.
Read the case studyJarvis
2026 — present · AI · Security · Local-firstA menu-bar macOS assistant that listens for a wake word, reasons with a local model, speaks with on-device neural voices and can read mail, drive the browser and touch files — built around one question: what happens when an agent that reads text it did not write also has hands?
Read the case study
Open to part-time roles and contracts.
Mobile · backend · cloud · AI
Open to part-time roles and outside-IR35 contracts, remote or London hybrid. Not looking for a full-time move.
Contact
Alessio Petrin · London, United Kingdom — Still Life, one of two views · the other is The Signal