Senior Embedded Firmware Engineer

The next generation of vehicles and aircraft won't be built with yesterday's manufacturing playbook.

Brelle is building a new approach to manufacturing for an increasingly electrified world, bringing together advanced engineering, software, testing, and automated production to develop and build high-performance energy and powertrain systems.

We're a California based, venture backed team working with some of the most demanding names in high performance mobility, including supercars and superbikes. Our work spans novel battery pack architecture, full-stack software, and automated manufacturing, with the goal of making machines lighter, safer, and more capable.

We're building something ambitious, and we're still early. That means real ownership, difficult technical problems, and the opportunity to see your work move from an idea to something real. We value people who think beyond their job description, challenge conventional approaches, and follow through on what they take on.

Build something exceptional. Own your work. See it move.

As a Senior Embedded Firmware Engineer, you'll be a core technical owner of Brelle's embedded platform—the software foundation powering our vehicle architecture and ECUs.

You'll work across the embedded stack, from RTOS and low-level drivers through diagnostics, communication protocols, and platform architecture. You'll work closely with electrical, battery, systems, and vehicle teams to bring ECUs from first power-on through validation and into real superbike and supercar programs.

This is a hands-on, high-ownership role. You'll be expected to make architectural decisions, get into the hardware when things don't work, and drive problems through to production.

• Develop and release production-grade firmware in C/C++ for MCU peripherals and external components including SPI, I2C, UART, CAN/CAN-FD, ADC, DMA, and timers

• Architect clean abstractions across RTOS, drivers, middleware, and application layers

• Lead ECU bring-up from first power-on through validation

• Develop production-grade diagnostics and vehicle communication including UDS, CAN, CAN-FD, Ethernet, and LIN

• Shape the structure and evolution of Brelle's embedded codebase, build systems, CI/CD, and development tooling

• Work hands-on with hardware in the lab and with vehicle teams during integration and validation

• Help establish engineering practices that allow us to move quickly without compromising reliability or safety

• Mentor other engineers and raise the technical bar through design reviews, code reviews, and collaboration

• 5+ years developing production firmware in C/C++ for resource-constrained embedded systems

• BS/MS in Electrical Engineering, Computer Science, or a related field

• Deep understanding of RTOS concepts, concurrency, memory management, and real-time constraints

• Strong experience with MCU peripherals, device drivers, and hardware/firmware debugging

• Expert with Git, build systems, and CI/CD

• Experience taking embedded software from development through validation and production

• A track record of owning technically complex problems and driving them through to completion

• Automotive, motorsport, powersports, aerospace, robotics, or other safety-critical experience

• AUTOSAR, ISO 26262, or ASPICE

• FreeRTOS, SafeRTOS, or other RTOS experience

• NXP MCUs, toolchains, and SDKs

• ECU development from bring-up through production

At Brelle, we value people who take ownership, think beyond their immediate responsibilities, and care about the quality of what they build.

Our operating principles reflect how we work:

• Big Picture: Understand the broader problem and how your work contributes to the outcome.

• Team First: Work across disciplines, share context, and help the team succeed.

• Lean In: Take initiative, identify what needs to happen, and step in to make progress.

• Be Obsessed: Care deeply about the details, the engineering, and the quality of the result.

• Follow Through: Take responsibility for outcomes and see the work through to completion.

We're looking for a leader who embodies these principles, builds trust through technical judgment and follow-through, and helps create an environment where strong engineers can do their best work.

Base Salary: $165,000–$225,000

Meaningful equity participation through Brelle's Employee Incentive Plan.

• Medical, dental, and vision (HMO/PPO)

• 401(k)

• Flexible PTO

• Team meals twice a week

• Monthly team events

Brelle is an equal opportunity employer.