Senior Electrical Engineer, Electronics Design
About The Position
Mainspring Energy is looking for a highly autonomous, intellectually curious, and influential Senior Electrical Engineer, Electronics Design to join our core Electrical Engineering organization. This is a high-impact engineering position where you will take end-to-end ownership and act as the technical lead for the critical electrical hardware and PCBA designs that power our revolutionary Linear Generator. Working alongside a world-class team of multidisciplinary engineers, you will have the execution autonomy to design advanced low-voltage (< 60V) systems, spearhead complex hardware validation and technical reviews, and directly shape the future of our power generation control architecture.
Requirements
- 5+ years of experience with a Bachelor's degree, or 4+ years of experience with a Master's degree, in Electrical Engineering or a related field
- Proven hands-on experience designing, troubleshooting, and realizing low-voltage electrical hardware (e.g., DC/DC converters, relays, e-fuses, and MOSFETs)
- Proficiency with PCBA schematic capture and PCB design tools (Altium strongly preferred)
- Strong fundamentals in analog/mixed-signal design, including operational amplifiers, ADCs, and hardware filtering (anti-aliasing, bandpass, etc.)
- Experience performing component derating analysis, worst-case tolerance stack-ups, and Design Failure Mode and Effects Analysis (DFMEA)
- Demonstrated ability to drive projects forward from initial requirements through production
- A "collaborate-first" mindset with strong communication skills across diverse technical teams and personalities
Nice To Haves
- Experience in the full hardware development life cycle of PCBA’s and electrical assemblies, from requirements development to manufacturing support
- Familiarity with hardware reliability and environmental validation testing (e.g., HALT, thermal chamber testing, Hipot, vibration)
- Experience working in a startup or rapid product development environment
- Familiarity with project management and documentation tools (e.g., Jira, Confluence)
- Basic programming or scripting experience (Python, C, or C++) specifically for automating lab bench tests or debugging hardware
Responsibilities
- Design low-voltage (< 60V) electrical systems and PCBAs that enable core functions and expand the capability of the Linear Generator
- Own the full bring-up, validation, and qualification of your custom electrical hardware designs
- Lead cross-functional design reviews to present concepts, align requirements, and secure approvals
- Debug and troubleshoot complex hardware issues that arise across field deployments, test labs, and the production floor
- Partner closely with reliability engineers to analyze hardware performance and continuously increase system robustness
- Work directly with our New Product Introduction (NPI) team and external suppliers to optimize designs for manufacturability (DFM) and testability (DFT)
- Interface with high-voltage hardware teams and define requirements for cabling and embedded firmware support
- Learn complex design concepts and mentor peers while collaborating with a world-class engineering team
Benefits
- pre-IPO stock options
- benefits
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What This Job Offers
Job Type
Full-time
Career Level
Senior
