Functional Systems Lead

Job Title: Functional Systems Lead 

Location: Burlingame, CA

Department: ESS Engineering

Reports to: CTO

Position Type: Full Time

About Peak Energy

Peak Energy is the first American venture to advance globally proven Sodium-Ion battery systems as the storage standard for the new era of renewable energy on a resilient grid. Sodium-Ion is cheap, readily available and safe, making it the leading contender in a rapidly evolving market.  

Our leadership team is powered by decades of expertise in scaling gigawatt-level innovation at world-class companies such as Tesla, Northvolt, SunPower, Fluence, and Enovix. We are backed by strategic investment and product partners such as TDK Ventures and Eclipse Ventures.  

About the Role - Functional Systems Lead:

Peak Energy is seeking a Functional Systems Lead to own system-level architecture, requirements, and integration across embedded software, electrical systems, and controls for our energy storage products. 

This role sits at the intersection of embedded systems, electrical engineering, and system modeling, ensuring our products are safe, reliable, and performant from cell to grid. 

You will lead the definition of functional requirements, system behavior, and safety architecture, while partnering closely with embedded, hardware, and modeling teams—and may directly oversee embedded software development for safety-critical functions. 

This is a highly cross-functional, hands-on leadership role ideal for someone who thrives in ambiguity and wants to shape both product and engineering direction. 

What You'll Do (Responsibilities):

• Own system-level architecture and functional definition for energy storage systems (BMS, controls, protections, EMS integration)  

• Define and manage system requirements, interfaces, and traceability from cell → module → pack → system → grid  

• Lead functional safety architecture, including fault detection, diagnostics, and protection strategies  

• Drive systems integration across embedded software, power electronics, thermal, and mechanical subsystems  

• Partner with embedded teams to guide development of real-time, safety-critical firmware (controls, protections, communication)  

• Develop and validate system models (performance, thermal, electrical behavior, fault conditions) to inform design decisions  

• Lead verification & validation strategy (DV/PV), including test definition, coverage, and requirements validation  

• Support certification efforts (UL, IEC, IEEE), ensuring compliance at the system level  

• Identify system risks and drive DFMEA, fault analysis, and mitigation strategies  

• Build and mentor a high-performing systems/embedded team, setting clear ownership and technical direction  

What You'll Bring (Qualifications):

• 10 years of experience in systems engineering, embedded systems, or electrical engineering, with 3–5 years in technical leadership  

• Strong background in safety-critical systems (battery systems, automotive, aerospace, industrial, or similar)  

• Experience defining and managing system requirements, interfaces, and architecture  

• Deep understanding of embedded systems and real-time controls  

• Familiarity with electrical systems (power electronics, battery systems, sensing, protections)  

• Experience with system modeling and simulation (MATLAB/Simulink, Python, or similar)  

• Strong experience with DFMEA, fault handling, and system reliability engineering  

• Experience driving cross-functional integration across hardware, software, and systems teams  

• Excellent communication skills and ability to operate across multiple technical domains  

• Bachelor’s, Master’s, or PhD in Electrical Engineering, Mechanical Engineering, Computer Engineering, or related field  

Preferred Qualifications:

• Experience with battery management systems (BMS) or energy storage systems  

• Background in functional safety standards (ISO 26262, IEC 61508, UL 9540, etc.)  

• Experience leading or mentoring embedded software teams  

• Familiarity with grid-scale energy systems, EMS, or power systems integration  
• Experience in startup or high-growth environments

Compensation and Benefits

Peak Energy is committed to building a diverse and inclusive workforce. We strongly encourage women, people of color, and individuals from underrepresented groups to apply. We value skills, potential, and perspective over specific credentials. If you’re excited about this role but your experience doesn’t look perfect on paper, we still want to hear from you. 

Our Core Values 

• Speed Through Focus - Move fast but understand why. Focus on the goal, don't sacrifice quality.  

• Mission Over Self - It's about the greater good; confident humility. Take ownership and accountability.  

• Face the Brutal Truth - Transparency, honesty, big picture curiosity. Fearless decision making.  

• Be a Good Person - Kindness, collaboration and teamwork. 

Compensation & Benefits 

The salary range for this role is $150,000-$225,000, with actual pay varying based on work location, experience, and skills. Our competitive benefits package includes: 

• Flexible time off  

• Comprehensive medical, dental, and vision coverage  

• Strong 401(k) plan  

• Equity opportunities  

• Many great work perks 

Join us to thrive in a supportive environment while making a meaningful impact in the energy sector! 

At Peak Energy Technologies Inc., we believe that a diverse and inclusive workplace makes us a more capable, innovative, and competitive company. We welcome people who represent diversity in their backgrounds, ethnicities, cultures, and experiences. Peak Energy Technologies Inc. is an equal opportunity employer, aiming to reach our company’s full potential by cultivating an inclusive workforce. We do not discriminate on the basis of race, color, ancestry, religion, national origin, sexual orientation, citizenship, marital or family status, disability, gender identity or expression, veteran status, or any other legally protected status.