Freelance software and cloud engineer, Paris

Hey, I'm Antoine.

just a simple dev

You hand me a product, even one still on paper: I hand it back in production. Front, back, infrastructure, and no one left to pass the buck to.

6+ years in productionGo · AWS · Next.jscertified Solutions ArchitectMove to tilt · drag to turn

Live atAmadeusXO7UpstoneSonoscannerWorkin.space

layer 01 — interface

› next build · routes exported
› css · inlined, no blocking request
› bundle · budgeted per build

FRONTEND

I treat reliability as a front-end problem, not just a back-end one.

It is the only place a failure is visible. State survives a refresh, errors say what to do next, and a phone on 3G behaves like the office fibre.

seen in production: Amadeus, 40+ properties · Sonoscanner, zero-downtime migration

React · Next.js · Vue 3 · Tailwind

› go build ./... · ok
› contracts · verified against the schema
› failure modes · one per third party

I write APIs that stay boring under load.

Typed contracts, idempotent writes, and a defined failure mode for every third party I don't control.

seen in production: XO7, 55M+ req/month across 300+ sites · Upstone, 15 000+ investor accounts

Go · TypeScript · OpenAPI · PostgreSQL

› terraform plan · no change
› monitors · green
› cost · within budget

I ship infrastructure you will never hear about.

Environments as code, alerting that pages before your users do, and a bill that stays where you put it.

seen in production: XO7, 3 years on Lambda and DynamoDB · Amadeus, 50 000+ bookings orchestrated by Step Functions

Lambda · DynamoDB · Step Functions · Terraform

04 / Contact

Tell me what you are building and where it hurts. I answer within two working days.