Freelancer profile translated to English.

Description

Senior fullstack developer, I master NodeJS/TypeScript, Python and C.

I am also the author of ZXC, a lossless C compression library faster than LZ4.

A good summary of my way of working: performance, rigor, and projects completed to the end.

I bring 20 years of experience in the web development industry. I have long worked on frontend issues, but my true area of expertise is the backend.

I design and build robust, scalable, and cost-optimized backends.

I have helped dozens of startups launch and build their architecture, made resilient platforms capable of handling high loads, and led the complete redesign of pure player backends, including migrations from monoliths to microservices architectures.

Creative, rigorous, and proactive, I enjoy challenges and solving concrete problems. I am used to agile methods, iteration, and tight deadlines.

Finally, my experience as a Lead Developer (managing several developers) and then as CTO has given me the know-how to bring every project to completion.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 15km)

Emeria Technologies
Senior Backend Engineer (Node.JS + MongoDB + Elasticsearch / AWS)
REAL ESTATE
August 2020 - Today (6 years)
Paris, France
BIG BANG Mission: complete migration of a TIV3/PostgreSQL backend to an architecture of about fifteen NodeJS/Typescript microservices in AWS+MongoDB+ElasticSearch.

■ Development of NodeJS REST microservices
■ Features and maintenance
Node.js MongoDB Typescript Elasticsearch Amazon Web Services (AWS)
Projet open source (indépendant)
Creator & Maintainer - ZXC, open-source compression library
December 2025 - Today (8 months)
ZXC, lossless C compression library (BSD-3 license), designed for read-heavy / WORM uses: careful encoding, ultra-fast decoding. (github.com/hellobertrand/zxc)

*Optimized decompressionARM64: +45% speed vs LZ4 (industry standard), with better compression ratio.
**Official distribution**: Debian, Ubuntu, Homebrew, Conan, vcpkg
**Interoperability**: NodeJS, Rust, Go, Python, WASM wrappers.
C Compression Open Source
OuiCar SAS
Senior Backend Developer (Node.JS + GraphQL + Elasticsearch / AWS)
TRANSPORTATION
July 2018 - July 2020 (2 years and 1 month)
Paris, France
BIG BANG Mission: complete migration of a monolith backend to an event-driven architecture based on about twenty NodeJS and PHP microservices in AWS.

■ Development of a GraphQL/Apollo gateway for frontends
■ Development of NodeJS REST and SNS microservices
■ Development of PHP / Symfony REST and SNS microservices
■ Interfacing with email, SMS, mobile push, payment providers etc.
■ Implementation of Elasticsearch search
■ Development of lambdas
■ Implementation of a Lerna monorepo for the entire NodeJS part
Node.js GraphQL Elasticsearch MySQL JavaScript