---
title: 'Staff Reliability Engineer at Peak Energy'
canonical: 'https://feeny.ai/job/staff-reliability-engineer-peak-energy-burlingame-v196ga8xs7qs'
type: 'job'
last_seen: '2026-09-09'
---

# Staff Reliability Engineer at Peak Energy

- **Company:** Peak Energy
- **Location:** Burlingame, CA
- **Posted:** 2026-03-13
- **Last confirmed live:** 2026-09-09
- **Apply:** https://peakenergy.com/get-in-touch/careers/jobs?job_id=5078884007&gh_jid=5078884007

## Job description

Job Title: Staff Reliability Engineer

Location: Burlingame, CA

Department: ESS Engineering

Reports To: Staff Reliability Engineer

Position Type: Full-time

## About Peak Energy

Peak Energy is the first American venture to advance globally proven Sodium-Ion battery systems as the storage standard for the new era of renewable energy on a resilient grid.

Sodium-Ion is cheap, readily available and safe, making it the leading contender in a rapidly evolving market.

Our leadership team is powered by decades of expertise in scaling gigawatt-level innovation at world-class companies such as Tesla, Northvolt, Apple, Powin, Enovix, Zipline, Solid Power, and Fluence. We are backed by strategic investment and product partners such as TDK Ventures and Eclipse Ventures.

We are a team of engineers, operators, entrepreneurs, and partners driven by a shared ambition to set the new performance standard for renewable energy and grid resilience.

## About the Role – Staff Reliability Engineer

Peak Energy is looking for a Staff Reliability Engineer to help scale ESS hardware reliability with a focus on HV electronics, devices, and power conversion. You will work cross-functionally to realize industry-leading reliability across all aspects of the product life cycle, from concept development through field deployment.

This role sits at the intersection of design, testing, manufacturing, and field operations — with direct influence on architecture decisions and reliability outcomes that matter most. You will creatively apply reliability expertise in a fast-paced, hands-on environment where your work has immediate and measurable impact.

The ideal candidate brings deep technical expertise, a proactive ownership mindset, and the ability to think critically and act decisively in a dynamic startup environment.

## What You'll Do

- Take independent DfR ownership for existing subsystem reliability and a lead DfR role for future products, with a focus on HV electronics, devices, and power conversion
- Fully develop reliability test programs (DV, PV, ORT) by leading DFMEA, defining mission profiles, analyzing test acceleration, and specifying test requirements
- Build and contribute to custom Python reliability analysis and modeling tools to automate workflows for life prediction, test design, test/field data, and reporting
- Define reliability requirements and acceptance criteria at key program milestones and clearly communicate risk and reliability confidence to engineering leadership
- Develop physics-of-failure lifetime models and close the loop by performing failure root cause analysis and statistical analyses of test and field reliability data
- Partner with the SIE team and suppliers to verify component quality by overseeing outsourced testing and defining qualification and inspection requirements
- Collaborate across all teams to embed DfR principles into engineering decisions throughout the product cycle, including early architecture decisions, manufacturing process development, and cost-down projects

## What You'll Bring

- Bachelor's or master's degree in Electrical Engineering, Mechanical Engineering, Reliability Engineering, Materials Science, or a related field
- 5+ years of experience in hardware reliability engineering in power electronics, high-voltage systems, or consumer electronics
- Strong understanding of reliability engineering principles including statistics, data analysis, physics-of-failure, lifetime prediction models, accelerated life testing, and DFMEA
- Demonstrated ability to independently lead product reliability through multiple stages of development
- Proficiency using statistical analysis tools in Python or equivalent for modeling and data analysis
- Strong documentation and technical communication skills — able to clearly present findings and reliability principles to cross-functional and leadership teams
- Ability to think critically and act decisively to efficiently grow reliability confidence in a fast-paced startup environment

## Preferred Qualifications

- Direct reliability experience with high voltage batteries, DC-DC converters, inverters, battery management systems, or PV solar products
- Hands-on experience designing, executing, and reporting complex electromechanical reliability tests (HTHE, PTCE, HTOE, HALT, vibration, corrosion)
- Experience with PCBA failure analysis tools such as SEM and X-ray
- Experience using DOEs, accelerated life testing, and field failure data to develop physics-based models for design margin analysis and lifetime failure prediction

Peak Energy is committed to building a diverse and inclusive workforce. We strongly encourage women, people of color, and individuals from underrepresented groups to apply. We value skills, potential, and perspective over specific credentials. If you're excited about this role but your experience doesn't look perfect on paper, we still want to hear from you.

Our Core Values

- Speed Through Focus – Move fast but understand why. Focus on the goal, don't sacrifice quality.
- Mission Over Self – It's about the greater good; confident humility. Take ownership and accountability.
- Face the Brutal Truth – Transparency, honesty, big picture curiosity. Fearless decision making.
- Be a Good Person – Kindness, collaboration and teamwork.

## Compensation & Benefits

The salary range for this role is $180,000–$230,000, with actual pay varying based on work location, experience, and skills. Our competitive benefits package includes:

- Flexible time off
- Comprehensive medical, dental, and vision coverage
- Strong 401(k) plan
- Equity opportunities
- Many great work perks

Join us to thrive in a supportive environment while making a meaningful impact in the energy sector!

At Peak Energy Technologies Inc., we believe that a diverse and inclusive workplace makes us a more capable, innovative, and competitive company. We welcome people who represent diversity in their backgrounds, ethnicities, cultures, and experiences. Peak Energy Technologies Inc. is an equal opportunity employer, aiming to reach our company's full potential by cultivating an inclusive workforce. We do not discriminate on the basis of race, color, ancestry, religion, national origin, sexual orientation, citizenship, marital or family status, disability, gender identity or expression, veteran status, or any other legally protected status.

## About Peak Energy

## Company Overview
- **One-liner**: Peak Energy designs and deploys next-generation sodium-ion energy storage systems for grid-scale and AI data center applications, offering the world’s first fully passive, drop-in compatible battery storage solution.
- **Entity Type**: Private (Series A – $55M raised in June 2024)
- **Headquarters**: Burlingame, California, USA
- **Founded**: 2023
- **Founders**: Landon Mossburg (CEO), Paul Durkee (CTO), Brandon Kelly (Chief Scientist)

## Core Business
- **Primary industry**: Energy storage / Battery technology / Grid infrastructure
- **Target customers**: Utilities, Independent Power Producers (IPPs), AI data center operators, grid operators (B2B, enterprise)
- **Mission or purpose**: Deliver the lowest cost electron to the grid, enabling the next era of AI, electrification, and renewable power through abundant, reliable, and domestically manufactured energy storage.

## Products & Services
- **Peak Passive Grid‑Scale Storage System**: A sodium‑ion battery energy storage system (BESS) designed for 20+ year life with zero scheduled maintenance, no augmentation, and passive thermal management. Drop‑in compatible with existing BESS installations, requiring no new installation crews or EMS integration playbooks. Achieves higher round‑trip efficiency (more power to GPUs) and lower total cost of ownership (claimed $75/kWh savings through minimal opex). Fully 48E ITC compliant. Deployed in partnership with nine of the largest U.S. IPPs and utilities.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total funding of **$65M** ($10M seed in October 2023, $55M Series A in June 2024)
- **Notable Investors/Partners**: Investors not publicly named; key partners include **GM** (partnership to scale next-gen energy storage), **Jupiter Power** (4.75 GWh contract signed November 2025), and nine of the largest IPPs/utilities in the U.S.
- **Growth Signals**:
  - First grid‑scale sodium‑ion system deployed in Colorado (August 2025) – world’s first passively cooled system.
  - Over 10 months of operating deployments; 9‑customer pilot completed.
  - **6+ GWh contracted through 2030** (including 4.75 GWh with Jupiter Power).
  - Scaling plan: 5 deployments in 2026, 1 GWh in 2027; U.S. factory (4 GWh capacity) planned for Q1 2027 SOP.
  - Signed agreement to deploy MISO’s first sodium‑ion grid storage battery (March 2026).

## Competitive Advantages
- **Lowest total cost of ownership** – passive cooling eliminates fan/chiller failures, no scheduled maintenance, no augmentation, reducing opex significantly.
- **Sodium‑ion chemistry** – uses abundant, domestically available materials, reducing supply chain risk and improving safety.
- **Drop‑in compatibility** – works with existing BESS infrastructure, lowering adoption barriers for utilities and IPPs.
- **Vertically integrated U.S. manufacturing** – from cell to delivered project, strengthening domestic supply chain and creating jobs.
- **Proven reliability** – 99.999% uptime target; operating deployments since mid‑2025.

## Strategic Focus
- **Scale up manufacturing** – build a 4 GWh U.S. factory (2027) and expand deployment pipeline toward 1 GWh/year.
- **Target AI data centers** – collapse 4‑7 year interconnect queues by providing immediate, reliable power for GPU clusters (claims 441 trillion additional tokens/year over 20‑year project life).
- **Long‑term integration** – eventually move into generation, transmission, and distribution (phase 3 strategy post‑2028).
- **Deepen utility/IPP partnerships** – continue signing long‑term offtake contracts (already 6+ GWh through 2030).

## Why Work Here
- **Culture & values**: “Be a good Person” is a core value; emphasis on purpose‑driven work, solving foundational energy problems, and moving fast with real‑world impact.
- **Benefits**: Comprehensive medical/dental/vision, 401(k) with company match, flexible PTO, generous parental leave, employer‑paid life/disability/income protection, mental health & wellness programs, free lunches, pet‑friendly offices, free EV charging (Burlingame office), cell phone reimbursement, commuter benefits.
- **Locations**: Offices in Burlingame (CA) and Denver (CO); hybrid/remote policy not explicitly stated but on‑site presence expected for engineering and manufacturing roles.
- **Growth trajectory**: Headcount has doubled over the past year; company is in rapid scaling phase (from pilot to commercial deployments). Open roles include engineering, manufacturing, finance, and sales (27+ positions listed on Greenhouse and LinkedIn as of mid‑2026).
- **Team**: Core team assembled from Tesla, Northvolt, Enovix, Lyft, Uber, Solid Power; strong technical depth in battery and energy systems.

## Sources
1. [peakenergy.com – About](https://peakenergy.com/company/about)
2. [peakenergy.com – Careers](https://peakenergy.com/get-in-touch/careers)
3. [LinkedIn – Peak Energy](https://www.linkedin.com/company/peakenergytech)
4. [CB Insights – Peak Energy](https://www.cbinsights.com/company/peak-energy-2)
5. [PR Newswire – Peak Signs 4.75 GWh Contract with Jupiter Power (Nov 2025)](https://peakenergy.com/)
6. [PR Newswire – Peak Signs Agreement to Deploy MISO’s First Sodium-Ion Grid Storage Battery (Mar 2026)](https://peakenergy.com/)
7. [Bloomberg – Peak Energy Secures $55 Million (Mar 2026)](https://peakenergy.com/)

## Other roles at Peak Energy

- [IT System Administrator (Sacramento)](https://feeny.ai/job/it-system-administrator-sacramento-peak-energy-sacramento-8y3eabpgvbh1) — Sacramento, CA
- [IT System Administrator (Burlingame)](https://feeny.ai/job/it-system-administrator-burlingame-peak-energy-burlingame-5ezksf45kry1) — Burlingame, CA
- [Global Supply Chain Management Intern (Spring 2027)](https://feeny.ai/job/global-supply-chain-management-intern-spring-2027-peak-energy-burlingame-k2bxw183zta1) — Burlingame, CA
- [Senior Sales Director](https://feeny.ai/job/senior-sales-director-peak-energy-burlingame-ca-or-broomfield-5wvmnkv7feet) — Burlingame CA OR Broomfield, CO
- [Automation Engineer Intern](https://feeny.ai/job/automation-engineer-intern-peak-energy-burlingame-bk4p845y9zx3) — Burlingame, CA
- [Head of Hardware](https://feeny.ai/job/head-of-hardware-peak-energy-burlingame-vky0rsv4b83a) — Burlingame, CA
- [Senior Cell Validation & Reliability Engineer](https://feeny.ai/job/senior-cell-validation-reliability-engineer-peak-energy-burlingame-3qmqm5rpdw0v) — Burlingame, CA
- [Controls & Automation Engineer](https://feeny.ai/job/controls-automation-engineer-peak-energy-burlingame-1ga3nxje5qxa) — Burlingame, CA
- [Sales Engineer](https://feeny.ai/job/sales-engineer-peak-energy-burlingame-california-or-broomfield-zthqmvwhwjse) — Burlingame California OR Broomfield, CO
- [Manufacturing Equipment Engineering Intern](https://feeny.ai/job/manufacturing-equipment-engineering-intern-peak-energy-burlingame-byqwk3yhj5df) — Burlingame, CA