Senior Embedded Software Engineer at Stafl Systems, LLC – South San Francisco, California

About Stafl Systems

Battery Technology Solutions for a Clean Energy FutureStafl Systems is dedicated to advancing all applications of lithium-ion battery technology to achieve a clean energy future. Since 2010, we’ve partnered with industry leaders to push the boundaries of innovation across electric vehicles, aviation, marine and consumer products. Our team brings proven engineering expertise across technical consulting, rapid product development, in-house prototype fabrication and battery pack manufacturing to solve some of the most complex challenges in today’s cleantech industry.

About the Role

We are seeking a skilled Embedded Software Engineer to design, develop, and deliver embedded software systems supporting BMS and powertrain applications. This role goes beyond basic implementation, requiring strong technical judgment, the ability to contribute to architectural discussions, and a commitment to subsystem performance, reliability, and safety.

You will work collaboratively within cross-functional teams, share knowledge with peers, and contribute to the ongoing development of the embedded software roadmap.

What You'll Do

Design and implement embedded software systems from hardware abstraction layer through application frameworks for BMS and powertrain systems Contribute to software architecture, module boundaries, and interface contracts Participate in and contribute to technical design reviews Execute subsystem-level development from concept through validation Write and review high-quality Modern C++ (C++17+) production code Contribute to requirements definition, task breakdowns, and development planning Identify and mitigate technical risks across hardware/software integration Support and execute HIL validation strategies and subsystem testing Interface directly with customers to support integration, troubleshooting, and technical trade-offs Share knowledge and provide feedback through code reviews and technical discussion Contribute to functional safety strategy and compliance efforts (ISO 26262, IEC 61508, etc.) Communicate technical status and risks to the engineering team and leads

Qualifications You'll Bring

5+ years of professional embedded software development experience Strong experience defining software architecture using object-oriented principles Deep understanding of embedded C++ toolchains (build systems, compilers, debugging environments) Strong experience developing production-quality software in Modern C++ Deep understanding of microcontroller architecture and real-time operating systems Experience leading technical efforts or serving as subsystem owner Strong systems integration experience (sensor integration, actuator control, power control, etc.) Experience debugging using oscilloscopes, logic analyzers, signal analysis tools, and power supplies Solid understanding of electronics fundamentals and electrical calculations

What Makes You Stand Out

Experience working with electric vehicle powertrains Strong familiarity with BMS systems and SOX algorithm development Experience with functional safety standards (ISO 26262, IEC 61508, ISO 13849) Experience mentoring engineers or leading small technical teams Experience interfacing directly with customers in technical capacity Benefits & Compensation

We offer a comprehensive total rewards package designed to support your health, financial wellbeing, and work-life balance.

Health & Wellness

Comprehensive Benefits: Health, Dental, Vision, and Life Insurance, with 99% of premiums covered by the company.Paid Parental Leave: 4 weeks of fully paid leave to support your growing family.

Financial Wellbeing

Competitive Compensation: Base salary plus an equity award.401(k) Plan: Employer match up to 5% to help you save for the future.

Time Off

Vacation & Sick Leave: 3 weeks of accrued vacation and 2 weeks of accrued sick leave.Company Holidays: Paid holidays in accordance with the company schedule.Flexible Leave: Unpaid personal leave options are available when you need themAdditional Perks & Workplace Programs

We provide programs and experiences that foster connection, growth, and a supportive workplace culture.

Time Off & Wellbeing

Bereavement Leave: 1 week fully paid.Jury Duty Leave: Up to 1 week fully paid.PTO Nomination Program: Recognize and reward your teammates with additional time off.

Growth & Safety

Professional Development: Annual training budget to support your career growth.Safety Shoe Stipend: Company-provided support for required safety gear.

Office Life & Culture

Collaborative Environment: We operate primarily on-site to foster fast-paced collaboration and execution. Hybrid flexibility may be available after an introductory period, depending on business needs.Team Outing Program: Department events including a half-day off and a company-sponsored allowance.Social Calendar: Weekly, monthly, and seasonal team-building events.Fuel Your Day: Regular catered team lunches plus a kitchen fully stocked with snacks and beverages daily.

Commuter Benefits

Travel & Charging: Uber Business access, free on-site EV charging, and more.The pay range for this role is:170,000 - 205,000 USD per year(South San Francisco)