Staff Electrical Engineer, Inverter Systems Engineer

Mainspring Energy•Menlo Park, CA

1d•Onsite

About The Position

The technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing. We have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. You will own the selection, integration, configuration, and performance of commercial off-the-shelf inverters used in Mainspring’s Linear Generator System.

Requirements

Bachelor's or Master's degree in Electrical Engineering or a related field
8+ years of hands-on experience working with power inverters or power conversion systems
Strong troubleshooting skills with AC power systems, including waveform analysis, fault behavior, and system stability
Hands-on experience using an oscilloscope, multimeter and other test instruments to measure electrical parameters such as voltage, current, frequency
Comfort working on high voltage systems (400-800 Vac, up to 1500Vdc)
The ability to work independently and own complex technical problems from initial identification through final resolution
A “collaborate-first” mindset and ability to communicate across a range of disciplines and personalities

Nice To Haves

Demonstrated experience in the development, deployment, or optimization of grid-scale energy projects
Proven expertise in the design, integration, or testing of high-voltage battery systems, including comprehensive knowledge of BMS operation and critical parameters
Direct experience working with SEL relays for protection and control in power systems

Responsibilities

Own inverter integration into Mainspring’s Linear Generator System, including electrical interfaces, control interfaces, configuration, and cooling constraints
Lead the troubleshooting and root cause analysis of complex hardware issues arising in the field, lab, or during testing of grid forming and grid following inverters and AC power systems
Configure and tune inverter parameters for stable operation across grid-forming and grid-following modes
Design and execute lab and system-level test plans to validate inverter performance, protection behavior, and system stability
Analyze AC power waveforms, power quality, and fault behavior to diagnose system issues
Perform critical design reviews and collaborate cross-functionally with mechanical, thermal, controls, test engineering and software engineers to ensure holistic system performance and manufacturability