Senior Embedded Firmware Engineer About Brelle“Energy for what moves us” defines our mission at Brelle. Based in California, Brelle engineers next-generation platforms for supercars and superbikes, working alongside high-performance brands in the US and Europe. Our innovations are built on a novel battery pack architecture, a full-stack software platform, and automated manufacturing. Joining the team means working on making electric vehicles—on the road and on the racetrack—lighter, more engaging, safer, and capable of charging in minutes.Our engineering teams are structured like small Skunkworks teams – nimble, cross-functional, and technical. Engineers are encouraged to explore new concepts and materials and expected to rapidly go from idea to prototype.About the RoleAs a Senior Firmware / Software Engineer, you will be a core technical owner of Brelle's embedded platform, building the software foundation that powers a vehicle embedded architecture, ECUs, and developer services. You will shape how our embedded software is designed and scaled across hardware variants and customers. This includes RTOS selection and configuration, low-level driver development, bootloaders, diagnostics, and the platform abstractions that enable safe, reliable application development.This is a hands-on role where you’ll work closely with electrical, battery, systems, and vehicle teams to release new ECUs—debugging hardware in the lab, and validating functionality on benches as well as in superbike and supercar programs.ResponsibilitiesWrite, review, and release production-grade firmware for MCU peripherals and external components (SPI, I2C, UART, CAN/CAN-FD, ADC, DMA, timers etc), with a strong emphasis on code quality, testability, and long-term maintainabilityArchitect and maintain clean abstractions across the embedded stack—RTOS, drivers, middleware, and application layersContribute to the development and adoption of AI-enabled tooling for embedded firmware, helping automate boilerplate code, enforce architectural patterns, and improve test coverage across complex ECU platformsPlay a core role in the structure and evolution of the embedded codebase, including repository organization, build systems, and versioning strategies that support multiple customers, programs, and hardware variantsLead ECU bring-up from first power-on through validationImplement and support diagnostics and vehicle communication (UDS, CAN, CAN-FD, Ethernet, LIN) to production standardsWork hands-on with vehicle and systems teams to integrate Brelle ECUs into active superbike and supercar programsQualifications5+ years developing production firmware in C/C++ for resource-constrained embedded systemsBachelor's or Master's degree in Electrical Engineering or Computer ScienceDeep understanding of RTOS concepts: task scheduling, priority inversion, semaphores, queues, memory pools, and real-time constraintsExperience writing device drivers for MCU peripherals and debuggingExpert with version control (Git), build systems and CI/CD pipelinesStrong foundation in memory management, and embedded systems fundamentalsPreferred QualificationsExperience with automotive software development (AUTOSAR, ISO 26262, ASPICE) or other safety-critical domainsBackground at leading EV companies or automotive Tier 1 firmware suppliersFamiliarity with FreeRTOS, SafeRTOS, or other real-time operating systemsFamiliarity with NXP toolchain & SDKsYou Are...Fundamentally Curious – You break complex problems down to first principles and are energized by hard problems worth solving at scaleA Builder of Exceptional Teams – You attract world-class talent, set exceptionally high standards, and create an environment where engineers do the best work of their careersAutonomous and Decisive – You take ownership of ambiguity, make informed calls, and drive execution with conviction. You empower your team to do the same, creating a culture of accountability and bias for actionCompensation & BenefitsCompensationBase Salary: $165,000 – $225,000. Compensation may vary based on experience, training, education, and scope of the role.Founding Engineer equity participation through Employee Incentive PlanBenefitsMedical (HMO, PPO), Dental, and Vision401(k)Flexible PTOCultureTeam meals 2x per weekMonthly team events