Professional Summary
Embedded systems engineer specialised in STM32 and Zephyr RTOS firmware for safety-relevant industrial and medical devices. From board bring-up and driver work to CI, unit tests and IEC 62304 documentation.
Engineering Expertise
Technical Skills
Certifications
- Zephyr RTOS Certified Developer — Linux Foundation (2022)
- IEC 62304 Software Lifecycle — TUV SUD (2019)
Work Experience
- Embedded Systems Engineer (freelance)· Independent2020 — Present
Delivered Zephyr-based firmware for 9 clients: BLE sensor nodes, CAN gateways and motor controllers, all with automated HIL tests.
- Firmware Engineer· Siemens Healthineers2016 — 2020
Owned firmware for a diagnostics module under IEC 62304 Class B; introduced a unit-test framework that cut field defects by 40%.
- Junior Embedded Engineer· Rohde & Schwarz2013 — 2016
Board bring-up, low-level drivers and bootloaders for STM32 and NXP platforms.
Education
- MSc Electrical Engineering & Information Technology — Technical University of Munich (2013)
- BSc Electrical Engineering — University of Stuttgart (2011)
Research & Publications
- Deterministic scheduling patterns in Zephyr for medical devices — Embedded World Conference (2022)
Languages
- German · Native
- English · Fluent
Availability
available
Contact / Hire
Engagements with Lena Hoffmann run through VoltLancer. Share your engineering brief and our team arranges the introduction, interview and two-week risk-free trial.
Portfolio projects
No published portfolio projects yet.