rlibaert

Resume

June 29, 2025 ⏲ 2m read

I have a decade of distilling software problems to their essence and offering simple & efficient solutions.

Skills

  • Programming: Golang, C/C++, VHDL, Git, GNU Make, Dockerfile, Design Patterns, Testing, Linting
  • Containerization: Docker, Podman, Nomad, Kubernetes, Dev Containers
  • Observability: Prometheus, VictoriaMetrics, Grafana, Loki
  • Databases: PostgreSQL, MariaDB, MongoDB, Redis, Timescale
  • CI / CD: GitLab CI, GitHub Actions

Experience

Senior Back-End Engineer • RadioKing (NRJ Group)

Since May 2022 • Remote, France

  • Developed and maintained Golang REST APIs running in a self-hosted Kubernetes cluster
  • Implemented efficient audio processors in Go using FFmpeg’s libraries & Cgo
  • Designed a custom Icecast-compatible ingestion network enhancing observability of critical events as well as security & reliability
  • Architectured an Icecast-based CDN serving hundreds of webradios to 100k+ concurrent listeners
  • Made audience tracking more reliable by processing asynchronously sessions metadata with FluentBit, providing a resilient & accurate source of insights to advertisers
  • Provided relevant Prometheus metrics and Grafana dashboards, allowing our team to efficiently investigate issues in the stack and locate root causes
  • Improved collaboration & progression on projects by being a source of proposals and promoting usage of recognized software design workflows (Domain-Driven Design, EventStorming)
  • Mentored the team on various tools (Git, Docker, DevContainers) and development best practices
  • Reduced build time by 20% and artifacts size by 50% on GitLab CI

System Engineer • Stormshield

September 2019 - April 2022 • Villeneuve d’Ascq, France

  • Supported and developed network & security C applications in virtualized environments
  • Developed a SD-WAN routing daemon in C++
  • Debugged FreeBSD kernel patches
  • Lead stand-ups and aligned team on work priorities

Software Engineer • MC2-Technologies

April 2016 - August 2019 • Sainghin-en-Mélantois, France

  • Developed firmware for Zynq7000 SoC in VHDL & C
  • Improved overall firmware performance of a custom FPGA-based signal processing device
  • Wrote development libraries simplifying integration of devices for users
  • Developed easy-to-use UIs to drive appliances

Training

Polytech’Lille engineering school

September 2011 - September 2016 • Villeneuve D’Ascq, France

  • Developed a self-hosted mailing service on a Raspberry Pi
  • Augmented a t-shirt with a fall detection system to send alerts over Internet

University of Bologna

May 2015 - August 2015 • Bologna, Italy

  • Studied and modeled GaN-based power amplifiers
  • Developed an automated characterization bench

Louis Pasteur high school

September 2008 - June 2011 • Lille, France

  • Baccalauréat S

Hobbies

Bouldering, padel, coffee brewing, knife sharpening, photography