About Brelle

Energy for what moves us.

The next generation of vehicles and aircraft won't be built with yesterday's manufacturing playbook.

Brelle is building a new approach to manufacturing for an increasingly electrified world, bringing together advanced engineering, software, testing, and automated production to develop and build high-performance energy and powertrain systems.

We're a California based, venture backed team working with some of the most demanding names in high performance mobility, including supercars and superbikes. Our work spans novel battery pack architecture, full-stack software, and automated manufacturing, with the goal of making machines lighter, safer, and more capable.

We're building something ambitious, and we're still early. That means real ownership, difficult technical problems, and the opportunity to see your work move from an idea to something real. We value people who think beyond their job description, challenge conventional approaches, and follow through on what they take on.

Build something exceptional. Own your work. See it move.

About the Role

As Senior Manager for Battery Design Engineering, you will be a hands-on contributor to Brelle’s battery systems – working through architecture decisions and staying close to the engineering details as module and pack development moves from concept to production across mechanical, electrical, thermal, and safety domains. You’ll also lead a small engineering team, acting as an approachable, guiding mentor who works alongside them rather than directing from a distance.

What You'll Do

Design and develop battery module and pack architecture — cell integration, thermal management, HV safety, electromechanical systems, and structural design

Work through architecture trade-offs across energy density, weight, thermal performance, cost, safety, and manufacturability, and drive them to a decision

Run design reviews and engineering processes — DFMEA, DVP&R, design release, and certification/homologation — with a hands-on role in the actual analysis and documentation, not just process oversight

Set and uphold design standards and review cadences that embed safety and quality into rapid iteration

Get hands-on with hardware and analysis — prototyping, testing, debugging, and iterating alongside the team

Guide technical direction for the battery systems roadmap, in close coordination with product and program priorities

Coordinate milestones and dependencies across mechanical, electrical, thermal, and structural workstreams to keep delivery on track

Lead and grow a small battery engineering team — hiring and developing talented engineers, and staying closely involved in their day-to-day work

Be an approachable, hands-on leader who works alongside the team, not just directing from above — someone engineers can bring problems to and dig into solutions with

Foster a culture of technical excellence and intellectual honesty, where engineers are encouraged to challenge assumptions and pursue novel solutions

What We're Looking For

7+ years of experience in battery pack/module design and development

BS or MS in Mechanical Engineering, Electrical Engineering, or a related field

Deep expertise across battery system architecture: cell integration, thermal management, HV safety, and structural design

Advanced CAD proficiency with the ability to engage at the design detail level

Strong understanding of DFM across multiple processes: injection molding, stamping, casting, composites, machining

How We Work

At Brelle, we value people who take ownership, think beyond their immediate responsibilities, and care about the quality of what they build.

Our operating principles reflect how we work:

Big Picture: Understand the broader problem and how your work contributes to the outcome.

Team First: Work across disciplines, share context, and help the team succeed.

Lean In: Take initiative, identify what needs to happen, and step in to make progress.

Be Obsessed: Care deeply about the details, the engineering, and the quality of the result.