Staff Software Engineer: Embedded Power Systems & Functional Safety

Required Qualifications

We are seeking a Staff Embedded engineer with:

Deep knowledge of electrical power systems, including power conversion, load control, energy metering, the behavior of switching systems, and the ability to translate that domain knowledge into correct, safe embedded software

Experience designing and implementing real-time control algorithms on microcontrollers, including PID controllers, state machine-based control systems, and timing-critical software in RTOS environments

Hands-on functional safety process experience with UL 1998, UL 60730, and/or UL 3141 (or an equivalent standard such as IEC 61508 or ISO 26262), including safety analysis techniques such as FTA and SW-FMEA

7 or more years of experience writing embedded software for hardware devices in C++ or object-oriented C on microcontrollers

Strong fundamentals in modern software design: object-oriented design, manual memory management, and real-time constraints

Exceptional interpersonal communication and collaboration skills: great at building trust, driving decisions to resolution, and influencing cross-functional teams

Track record of taking ownership over projects end-to-end and mentoring others through design and code review

Able to evaluate requirements and translate them into engineering tasks through implementation and testing

Bonus Qualifications

We do not expect any engineer to have all skills, but we do want you to be excited to learn and grow. Every Device Software Engineer is free to roam up and down our device software stack, so any combination of the following skills is welcome but can be developed on the job.

Proficiency using AI tools for software architecture, design, implementation, and testing

Experience with the STM32 microcontroller family or other ARM Cortex-M processors

Experience with high-voltage or energy storage systems or solar inverters

Experience with standard electrical communication interfaces such as UART, I2C, USB, Ethernet, Modbus, or CAN

Hands-on debugging experience with JTAG debuggers and benchtop test equipment

Experience working in a multidisciplinary environment alongside electrical and mechanical engineering teams

Experience with the V-model of software development with strict requirements on documentation and requirements traceability

Headquartered in San Francisco’s vibrant SoMa neighborhood, we are an eclectic group of creative thinkers who value open communication, teamwork, and a ‘make it happen’ approach to addressing complex challenges.

SPAN embraces diversity and equal opportunity in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills.

We’re hiring talented individuals who are driven by success and are passionate about shaping the future of renewable energy. If that sounds like you, we’d love for you to consider joining the rapidly growing team at SPAN.

The Perks:

⚡ Competitive compensation + equity grants at a well-funded, venture-backed company

⚡ Comprehensive benefits: 100% employee premiums for base plans on medical, dental, vision with options for additional coverage. Parental leave up to twenty four (24) weeks depending on eligibility

⚡ Comfortable, sunny office space located near BART and Caltrain public transit

⚡ Strong focus on team building and company culture: Employee Resource Groups, monthly social events, SPANcakes recognition breakfast, lunch, and learns

⚡ Flexible hours, one holiday per month, and flexible time off

Interested in joining our team? Apply today and we’ll be in touch with the next steps!