Freelancer profile translated to English.

Description

Do you need reliable production firmware, robust end-to-end IoT architecture, or a Linux daemon that runs unsupervised?

I develop embedded systems in C/C++ with a production requirement: zero crashes, automatic reconnection, controlled consumption, technical documentation delivered with the code.

What I master concretely:

Real-time firmware on ESP32-S3 with FreeRTOS — multi-tasking, queues, EventGroups, watchdog management. Secure MQTT/TLS communication, OTA with automatic rollback, deep sleep with RTC wake-up. Low-level protocols: UART, SPI, I2C. Embedded Linux on Raspberry Pi — systemd services, production-ready C daemon, signal handling, logs, resource limits. Complete IoT pipeline — sensors → MQTT → InfluxDB → Grafana. CI/CD GitHub Actions — automatic build on each push.

My personal projects are designed with the same constraints as a real mission: modular architecture, robustness, documentation, and reviewable code.

Available immediately. Remote or on-site anywhere in France.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Lyon (up to 50km)

freelance
IoT firmware development — ESP32-S3, FreeRTOS, MQTT/TLS, OTA
February 2026 - March 2026 (1 month)
Real-time firmware architecture on ESP32-S3 (ESP-IDF v5.2, C17). FreeRTOS multi-tasking management: sensor/network/watchdog separation, queues, EventGroups. Secure MQTT over TLS 1.2 communication (port 8883, HiveMQ Cloud). OTA triggered via MQTT with version verification and automatic rollback on A/B partition table. Deep sleep with RTC wake-up, NTP synchronization, offline FIFO ring buffer. Complete data pipeline: Telegraf → InfluxDB → Grafana under Docker Compose. CI/CD GitHub Actions — automatic build for ESP32-S3 target.
ESP32 / ESP-IDF FreeRTOS MQTT Embedded C OTA
freelance
Open-source developer — RayMap
December 2025 - Today (6 months)
Design and development of RayMap, a header-only C library for real-time projection mapping. Homography, mesh deformation, interactive calibration, H.264/H.265 decoding via FFmpeg. Open-source project published on GitHub.
C OpenGL ffmpeg Algorithms Image Processing
Freelance
C/C++ Developer — Embedded & Real-time Graphics Systems
SOFTWARE PUBLISHING
May 2023 - Today (3 years and 1 month)
Development of high-performance C/C++ systems for interactive installations, embedded hardware, and real-time rendering.

Notable projects:
- RayMap: open-source C library for real-time projection mapping (homography, mesh deformation, FFmpeg)
- Polaris: ESP32 interactive installation with GLSL shaders, presented at the ESADSE Saint-Étienne graduation
- Minitel: production C daemon on Raspberry Pi, systemd service, 0 crashes during exposure duration

Skills: C, C++, OpenGL, GLSL, raylib, ESP32, Raspberry Pi, Linux
C C++ OpenGL GLSL ESP32