Senior Electrical Engineer, Electronics Design – Low-Voltage

Mainspringenergy; Edison (CA); On-site; USD 140,000 - 180,000; Full time

Job summary

Mainspring Energy seeks a Senior Electrical Engineer, Electronics Design to own end-to-end hardware and PCBA designs powering the Linear Generator. You will lead bring-up, validation, and cross-functional design reviews with a world-class engineering team, driving reliability and manufacturability.

The role demands 8+ years in hardware design, hands-on experience with low-voltage systems, and strong analog/mixed-signal expertise.

Qualifications

• 8+ years of experience in electrical engineering or related field with hardware design.
• 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.
• 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

• Low-Voltage Hardware Design: Design low-voltage (< 60V) electrical systems and PCBAs that enable core functions and expand the capability of the Linear Generator

Skills

Low-voltage design

PCB design

Schematic capture

Analog/mixed-signal

DFMEA

Python/C/C++ scripting

Education

Bachelor's degree in Electrical Engineering

Tools

Altium Designer

Jira

Confluence

Job description

Mainspring Energy seeks a Senior Electrical Engineer, Electronics Design to own end-to-end hardware and PCBA designs powering the Linear Generator. You will lead bring-up, validation, and cross-functional design reviews with a world-class engineering team, driving reliability and manufacturability.

The role demands 8+ years in hardware design, hands-on experience with low-voltage systems, and strong analog/mixed-signal expertise.