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Salary: USD 140,000 - 195,000 / annual
Lunar Energy is building clean energy products to electrify homes and create virtual power plants. As a Senior Reliability Engineer focused on Power Electronics, you will ensure product reliability across the entire lifecycle of home energy systems, from design through field deployment.
Key responsibilities include:
- Collaborate with mechanical and electrical engineers during hardware design to establish component and system-level reliability targets for power electronics and battery systems
- Provide Design for Reliability (DfR) inputs during new product development
- Drive Design Failure Modes and Effects Analyses (DFMEA) to capture performance risks and implement mitigation strategies
- Develop Accelerated Life Testing (ALT) reliability test plans for components and subsystems using physics-of-failure methodology
- Track field reliability performance metrics (part replacements, customer complaints, fault codes) and identify continuous improvement opportunities
- Collaborate with finance on warranty program insights
- Conduct failure analysis on test and field returns to determine root cause and drive product improvements through corrective actions
This is a hands-on technical role where you'll work directly with cross-functional teams to solve complex reliability challenges in power electronics and energy storage systems.
Requirements:
- Degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Physics, or equivalent
- Proven track record solving complex power electronics reliability failures
- Working knowledge of common power converter topologies (inverter, buck-boost converter, etc.)
- Strong grasp of PCBA-level failure physics (CTE mismatch, solder fatigue, contact resistance, insulation degradation)
- Familiarity with failure modes in common power electronics components (electrolytic capacitors, relays, semiconductors, magnetics)
- Working knowledge of failure analysis techniques (optical microscopy, SEM, CSAM, X-ray, cross-sectioning, EDX)
- Experience with accelerated life testing models and governing equations for PCBAs, battery storage, and mechanical structures
- Understanding of reliability statistics
