Freelancer profile translated to English.
Back to original languageAbout Yohenn
My journey began with a passion for code at the closest level to hardware. A graduate of ENSEIRR-MATMECA, I quickly plunged into the demanding world of critical embedded systems, particularly in the automotive sector (ISO 26262 standard, ASIL C projects). Developing high-performance and secure bare-metal firmwares, optimizing low-level drivers to the microsecond: this is my core business.
Very quickly, I noticed a recurring gap in the industry: the hardware world and modern software practices (DevOps, automation) spoke little to each other. This is where I found my true added value. I chose to become the bridge between these two worlds by developing a dual expertise: Embedded DevOps.
French
Native or bilingual
English
Fluent
Spanish
Fluent
Remote only
Primarily works remotely
Experience
- Automotive Safety (Espagne)Embedded Systems & DevOps EngineerAUTOMOBILEMarch 2023 - January 2026 (2 years and 10 months)Barcelone, SpainDevelopment of critical safety firmware for TMS570LS12x MCUs under ISO 26262 standard.
- Low-Level & RTOS: ASIL C / non-ASIL task partitioning under SafeRTOS. Development of bare-metal SPI/HTU-DMA drivers (100µs cycles). Optimization of CPU load and memory.
- Safety & Diagnostics: Implementation of torque monitoring algorithms. Writing software safety requirements and hardware self-tests at the register level (HET, ADC, DMA).
- DevOps & Automation: Creation of a CI pipeline on GitHub generating ASIL-compliant C code and unit tests from Polarion. Automation of tests on HIL/SIL targets and traceability documentation via Python.
- Bosch (via Elsys Design, France)Embedded Software EngineerAUTOMOBILEAugust 2021 - February 2023 (1 year and 6 months)Valbonne, FranceDevelopment of low-level BootROM firmware for the hardware security module (HSM) of a next-generation automotive radar system.Secure Boot & Cryptography: Full implementation of the BootChain (startup code, linkage scripts). Integration of secure boot mechanisms (RSASSA-PSS 4096, AES-CBC, SHA3-384) with hardware acceleration on HSM, key management, and integrity verification.Low-Level Drivers & Performance: Development of bare-metal drivers in C and ARC Assembly (MISRA standards) for system configuration (clocks, IRQs, power management) and optimization of boot speed through QSPI flash reading coupled with DMA.Automation & Validation: Creation of a toolchain (Python, Shell, OpenSSL) to generate cryptographic binaries. Design of unit tests under CMocka and debugging on real targets/emulators via Trace32 and Palladium.Methodology: Strict technical documentation (Doxygen, Markdown, Docupedia) within an Agile environment (Git, Bitbucket, Jira).
- ELSYS DESIGNEmbedded Software Engineering InternshipAUTOMOBILEFebruary 2021 - August 2021 (6 months)Vallauris, FranceKarlab R&D Project: Design of a connected go-kart system in Mixed Reality.Virtualization & RTOS: Configuration of the Jailhouse hypervisor to isolate and partition resources between a Linux environment and the ERIKA real-time RTOS.Low-Level Development: Design and writing of a Linux vPCI driver to ensure critical and high-performance communication (Inter-Process) between the OS and the RTOS.Network & Protocols: Implementation of a TCP/IP communication interface in C++ with FlatBuffers serialization for real-time data exchange.Technical Environment: C, C++, Linux, ERIKA RTOS, Jailhouse Hypervisor, vPCI Driver, FlatBuffers, CANopen, Gitlab.
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