A French voice assistant for digital signage
A Go service I built to let retail staff create digital-signage content by speaking in French.
- Go
- OpenAI Realtime
- SSE
- Docker
Simon Bernabeu
I am a freelance full-stack engineer, currently working with Go, Rust, TypeScript and C#. For the past four years, I have worked with DoohYouLike as part of a three-person engineering team, building a complete digital-out-of-home advertising platform. I have worked on almost every layer of it: Raspberry Pi signage players, backend services, and the web interfaces used to manage them.
Selected work
Configuring offline screens over Bluetooth
A BLE GATT server written in Go, used to configure Raspberry Pi signage players from a phone before they have a network connection.
- Go
- Raspberry Pi
- BLE GATT
- ARM cross-compilation
A shared email gateway in Rust
A Rust API I built around Amazon SES v2 to manage email sending and quotas for several company products.
- Rust
- Rocket
- Amazon SES v2
- Tokio
A real-time Kanban for screen deployments
A complete Kanban module I built with custom drag and drop, live WebSocket updates and spreadsheet imports.
- Svelte
- SvelteKit
- WebSockets
- TypeScript
Gmail and Calendar sync for a sales CRM
Two Google OAuth integrations I built with encrypted tokens, background workers and a daily Go reconciliation job.
- C#/.NET 8
- Go
- Google OAuth
- GCP Cloud Scheduler
Weekly screen uptime from connection events
A Go Cloud Function that reconstructs a weekly connection score for every screen from sparse connect and disconnect events.
- Go
- GCP Cloud Functions
- PostgreSQL
Also built
- malloc re-creation: An ongoing low-level project to understand how memory allocation works past the usual API.
- ncurses chess: A complete chess game written in C, with a fragile but capable evaluation engine.
- Anti-cheat tooling: Low-level Rust for detecting manipulation in online games.
- A shell: A bash-like shell I wrote to find out what actually happens after pressing enter.
About me
I got into programming by accident. When I was younger, I tried to host an Ace of Spades server with custom game modes. I had no idea how to code and never managed to make it work, but it made me curious about how computers actually work. That feeling never really left.
Most of my professional experience is in full-stack development, although I personally enjoy lower-level engineering. Epitech trained me to learn new languages quickly and to work autonomously, so I am comfortable moving into a part of a system I do not know yet. In my free time, I often re-create C library functions in different languages, mostly to understand what happens below the API.
Get in touch
I am available for remote freelance work. The easiest way to reach me is by email.