Freelancer profile translated to English.

Description

Note: currently under contract, but available full-time quickly (<1 month) for the right offer.

Backend and DevOps developer for over 12 years, having worked in intense environments with a high level of responsibility (on-call, uptime guarantees, frontend applications) on a variety of projects far beyond simple CRUD.

I have worked as much on the implementation of features or systems as on bug hunting and debt reduction (refactoring through tests).

Some topics I have had to deal with alone or mostly solo:

- Full-stack development of B2B and B2C applications,

- Migration of a complete infrastructure (AWS) with very little downtime,

- Implementation of semantic search (embeddings and PG Vector),

- Development of a data ingestion service (RabbitMQ, Websockets...) and its redistribution, with a semi-real-time constraint,

- Development of a real-time CRM (WebSockets, GraphQL) for managing the contributions of over 30,000 active members.

- Setup and optimization of CI, SQL queries...

I can help you to:

- Improve your DX, your DevOps processes

- Scale your services (X and Y)

- Reduce technical debt and improve the reliability and speed of your services

- Set up a complete API (REST, OpenAPI, GraphQL...)

- Take on management, assist your team and help them organize

- Understand and transform your needs into functional and technical specifications

I regularly write technical articles on my blog, and I have already given conferences in English to present various topics or transfer knowledge.

I am not closed to other technologies not present on my profile. I am currently returning to Python.

My philosophy:

- Quick and reliable MVP

- Meticulous but not dogmatic

- Production must never crash

- Simplicity makes robustness

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 10km)

blinq
Full-Stack Developer
RESTAURANTS AND FOOD SERVICE
June 2025 - Today (1 year and 2 months)
Backend development on the central API for all services (from booking to kitchen orders) and full-stack development on the mobile application managing bookings.

Stack: Elixir, Postgres, RabbitMQ, LiveView, Tailwind CSS

Topics covered and initiatives taken in six months:
- Implementation of a complete pre-payment / "card on file" flow for bookings, with LiveView and Stripe
- Improvement of the UX of the booking application on mobile browsers with LiveView (frontend caching and reconciliation on reconnection)
- Drastic reduction of tech debt across the board and improvement of service reliability, refactoring and writing tests
- Creation and optimization of a CI for a few projects that lacked one
- Integration of Google RWG (Reserve with Google)
Elixir Liveview TailwindCSS PostgreSQL CI/CD
Colette Club
Senior Backend Engineer
SOCIAL NETWORKS
October 2022 - December 2024 (2 years and 2 months)
Paris, France
Working directly with the CTO in a tech team of 4 people.
- Development of critical features for the rental and social part of Colette (200k LoC, 3k+ tests).
- Development of a "real-time" CRM tool with GraphQL.
- Improvement of observability via OpenTelemetry (and development of a library for Absinthe).
- Exploratory work using an LLM for semantic search, automatic moderation, and fraudulent account detection.
- SQL statistics (Metabase) for business teams.

Stack: Elixir, PostGIS, Absinthe, Dataloader, Oban, EventStore
Pandascore
Senior Backend Engineer
September 2019 - October 2022 (3 years and 1 month)
Working in the Stats and Odds squads (3 developers each).
- Backend development in a SOA architecture.
- Development of critical real-time services for trading activities.
- Taking over and refactoring the work left by the CTO's departure, rewriting legacy services into reliable and scalable applications.
- CI optimization and reduction of build times by 2.
- Simplification and enrichment of CD (Gitlab CI, Kustomize).
- Refining specifications and saving months of development in favor of MVPs.

Stack: Elixir, Kubernetes, Gitlab CI, Postgres, OpenAPI, RabbitMQ