Senior Hardware Reliability Engineer - Power Electronics

Lunar Energy is looking for a hands-on, execution-focused Staff Reliability Engineer to lead product reliability for its home energy systems, spanning power electronics, battery, and solar products. This role owns system-level reliability from early architecture through fleet deployment, sets the reliability strategy, defines qualification and accelerated life testing approaches, and shapes failure analysis practices. The role works across Test, Mechanical, Electrical, Firmware, Manufacturing, Supply Chain, and Field Service teams.

Responsibilities

Own the reliability strategy for power electronics and battery systems, including the component and system level reliability requirements that guide it; Establish targeted and prioritized test plans based on an in-depth understanding of the design, identified design risks, reliability goals, and physics-of-failure methodology; Collaborate with mechanical and electrical engineers during hardware design to provide Design for Reliability (DfR) inputs during new product development; Drive Design Failure Modes and Effects Analyses (DFMEA) for various systems and implement appropriate mitigation activities; Track field reliability performance and identify opportunities for continuous product improvement and reliability growth; Collaborate with the finance team to provide insights into the warranty program; Lead root-cause investigations of complex power electronics and PCBA failures; Guide team to efficiently get critical pieces of evidence through FA techniques or hypothesis testing to prove/disprove failure hypotheses; Provide expertise on failure physics for in-depth understanding of failure mechanisms; Drive containment and countermeasure validation; Use Weibull and lifetime modeling to project field reliability, surface and communicate critical reliability risks, and serve as a decisive voice for validation in product release readiness reviews

Requirements

Degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Physics, or equivalent; Ability to manage complex reliability decisions in fast paced environments e.g. Balancing reliability risk against cost, schedule, and performance; Experience with accelerated life testing models and the governing equations, as well as applied reliability statistics (e.g., Weibull analysis) and risk analysis; Proven track record of leading cross-functional root-cause investigations in a fast-moving hardware company; Working knowledge of failure analysis techniques such as optical microscopy, SEM, CSAM, X-ray, cross-sectioning, and EDX, including knowing which technique to recommend for a given failure

Nice to have

Familiarity with PCBA reliability best design practices in conjunction with a strong grasp of failure physics in PCBAs/common power electronics components; Working knowledge of the theory of operation of common power converter topologies

Benefits

Competitive base pay as part of total compensation; Opportunity to become a Lunar shareholder through equity and employee stock program; Medical, dental, and vision insurance for employees and dependents; Flexible Paid Time Off plus 10 paid holidays; Tax deferred 401(k) plan; Paid parental leave for all full time employees including 12 weeks for the birthing mother and 6 weeks for the non-birthing parent; Subsidized EV charging and pre-tax commuter benefits