Staff Reliability Engineer – Power Electronics

Lunar Energy; Mountain View (CA); On-site; USD 165,000 - 193,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Flexible Paid Time Off

Tax deferred 401(k) plan

Parental leave

EV charging subsidies

Job summary

Lunar Energy is seeking a Staff Reliability Engineer for power electronics in Mountain View, CA. You will collaborate with hardware teams to define and refine reliability targets for power electronics and battery systems, and drive DFMEA across multiple subsystems.

The role emphasizes designing reliability into products from concept through field performance. Key responsibilities include developing ALT test plans, performing root-cause failure analyses, and monitoring field reliability metrics

Qualifications

• Degree in Mechanical, Electrical, Chemical Engineering or Physics.
• Proven track record of solving complex power electronics reliability failures.
• Knowledge of common power converter topologies (inverter, buck, boost).
• Deep understanding of physics of failure and failure mechanisms in PCBAs and power electronics.
• Experience with failure analysis techniques such as optical microscopy, SEM, CSAM, X-ray, cross-sectioning and EDX.
• Experience with accelerated life testing models for PCBAs, battery storage and mechanical structures.
• Understanding of reliability statistics.

Responsibilities

• Collaborate with mechanical and electrical engineers during hardware design to set reliability targets.
• Provide Design for Reliability inputs during new product development.
• Drive Design Failure Modes and Effects Analyses (DFMEA) for various systems.
• Develop ALT Reliability Test Plans to demonstrate reliability during design life.
• Track field reliability metrics and identify opportunities for improvement and warranty insights.
• Lead failure analysis of reliability test and field returns to determine root cause and containment.

Skills

Power electronics

DFMEA

DfR inputs

Reliability testing

Failure analysis

Physics of failure

PCBAs

MOSFETs

Capacitors

Inductors

Accelerated life testing

Reliability statistics

Power converter topologies

Education

Mechanical Engineering

Electrical Engineering

Chemical Engineering

Physics

Equivalent

Tools

Optical microscopy

SEM

CSAM

X-ray

Cross-sectioning

EDX

Job description

Staff Reliability Engineer – Power Electronics

Reliability Engineers at Lunar Energy will be responsible for ensuring product reliability throughout the entire lifecycle of our revolutionary home energy products. This includes providing input during the design phases, developing test plans, and assessing on-going field performance. We are looking for people who are passionate about a more sustainable future and want to make that vision a reality. An ideal candidate is someone who is excited to collaborate with a diverse and dedicated team

Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

On a given day at Lunar, you’ll likely…

• Collaborate with mechanical and electrical engineers during hardware design to establish and refine component and system level reliability targets for our power electronics and battery systems.
• Provide Design for Reliability (DfR) inputs during new product development.
• Drive Design Failure Modes and Effects Analyses (DFMEA) for various systems to capture

performance risks and implement appropriate mitigation activities.

• Develop ALT Reliability Test Plans for components and subsystems using identified risks, reliability targets, and physics of failures methodology to demonstrate the required product reliability throughout its design life.
• Track field reliability performance for various metrics like part replacements, customer complaints, fault codes. Identify opportunities for continuous product improvement and reliability growth. Collaborate with the finance team to provide insights into our warranty program.
• Drive failure analysis of reliability test and/or field returns to determine root cause and drive product improvement through containment and corrective actions.

Desired Skills:

• Degree in Mechanical Engineering, Electrical Engineering, Chemical Engineering, Physics or
• Equivalent.
• Proven track record of solving complex power electronics reliability failures
• Working knowledge in theory of operation of common power converter topologies (inverter, buck boost converter…etc)
• Deep understanding of physics of failure and common failure mechanisms for PCBAs and power electronics components (MOSFETs, capacitors, inductors…etc)
• Working knowledge of failure analysis techniques such as optical microscopy, SEM, CSAM, X-ray, cross-sectioning and EDX – know which technique to recommend given a specific failure
• Experience with accelerated life testing models and the governing equations, specifically for
• PCBAs, battery storage, and relevant mechanical structures.
• Understanding of reliability statistics

Benefits:

We’re dedicated to creating a remarkable employee experience. At Lunar, competitive base pay is one part of our total compensation package. Lunar employees also have the opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program.

Additional benefits include:

• 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 paid parental leave for the birthing mother and 6 weeks paid parental leave for the non-birthing parent
• Subsidized EV charging and pre-tax commuter benefits

Our DE&I Philosophy:

Lunar Energy is an equal opportunity employer. We are committed to attracting, developing and retaining diverse talent by supporting an inclusive workplace. Lunar recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any other status protected by applicable law.

Our Compensation Philosophy:

Our goal is to ensure that all Lunar Energy employees are fairly compensated. Please note that the salary range information that follows is a good faith estimate for this position provided pursuant to the Pay Transparency for Pay Equity Act for California applicants. The salary range estimate for this position depending on level of experience is: $165,000 – $192,500 USD.

The actual offer, reflecting the total compensation package & benefits, will be at the company’s sole discretion, and determined by factors including but not limited to years of experience, job level, geographic location, and other relevant business considerations. The company also reserves the right to amend or modify this job description, employee perks, and benefits at any time.