Staff Software Engineer: Embedded Power Systems & Functional Safety

The role

You will own the design and implementation of control algorithms and functional safety architecture for the SPAN Panel. This involves designing real-time control systems and managing the full functional safety lifecycle for software components.

What you will do

• Own the design and implementation of control algorithms and functional safety architecture
• Design real-time control systems and algorithms
• Own the full functional safety lifecycle for software components
• Drive safety-critical features from conception through implementation and certification
• Design and implement control algorithms for power management on MCUs in an RTOS environment
• Author hazard analyses and software FMEAs
• Design safety mechanisms and diagnostics into firmware
• Produce documentation and evidence packages for UL 1998, UL 60730, and UL 3141 certification
• Develop fault injection frameworks and Hardware In the Loop test methodologies
• Mentor others through design and code review

Required qualifications

• Deep knowledge of electrical power systems including power conversion, load control, energy metering, and switching systems
• 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 equivalent standards like IEC 61508 or ISO 26262
• Experience with 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 including object-oriented design, manual memory management, and real-time constraints
• Exceptional interpersonal communication and collaboration skills
• Track record of taking ownership over projects end-to-end and mentoring others

Nice to have

• 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

Benefits

• Competitive compensation + equity grants
• 100% employee premiums for base plans on medical, dental, vision
• Options for additional coverage
• Parental leave up to twenty four (24) weeks depending on eligibility
• Office space located near BART and Caltrain public transit
• Employee Resource Groups
• Monthly social events
• SPANcakes recognition breakfast
• Lunch and learns
• Flexible hours
• One holiday per month
• Flexible time off

About the company

SPAN is a mission-driven company designing, building, and deploying products that electrify the built environment to reduce carbon emissions. The company is headquartered in San Francisco's SoMa neighborhood.