Senior Mechanical Engineer

Written By Guest User

On-Site • Oakland, CA • Full-Time • $150,000 - $170,000 Base Salary

About the Role

As a Senior Mechanical Engineer, you'll leverage your extensive engineering expertise to design, prototype, and optimize electrochemical cells and systems. You'll closely manage relationships with external engineering contractors and vendors, oversee prototyping and product scale-up, and lead innovative electrode and cell designs. Your leadership will involve hands-on prototyping, vendor collaboration, manufacturing scale-up, and simulation-driven design. You will be a key contributor in a collaborative environment, focused on problem-solving and delivering robust, scalable products aligned with our mission.

Key Responsibilities

  • Collaborate closely with third-party engineering contractors and manufacturing vendors to ensure effective project execution.

  • Hands-on prototyping and assembly of electrochemical stacks, electrodes, and associated components.

  • Lead technical projects towards optimizing the design of the electrolyzer stack components. Assess and improve performance, safety, reliability, quality, and manufacturability.

  • Explore and implement new electrode designs, materials, and components, optimizing for electrochemical performance, thermal management, fluid dynamics, and pressure containment.

  • Oversee scale-up from lab-scale prototypes to meter-scale and manufacturing-scale components and products.

  • Establish and refine quality control systems and production workflows to ensure reliability and manufacturability.

  • Communicate clearly and proactively with cross-functional teams and stakeholders, addressing challenges and documenting project progress.

  • Champion safety standards in laboratory and production environments.

Required Qualifications, Skills, and Experience

  • A Ph.D. in a scientific or engineering field (e.g., chemical engineering, materials science, physics, mechanical engineering), or B.S./M.S. with 5+ years of relevant industry experience building electrochemical stacks

  • Demonstrable hands-on project experience working in an industrial setting with a strong background in mechanical engineering, and materials science.

  • Demonstrated experience managing engineering contractors and vendor relationships.

  • Strong hands-on experience with prototyping, electrode/cell component fabrication, and mechanical assembly.

  • Experience in manufacturing scale-up processes and challenges.

  • Solid understanding of thermal management, fluid dynamics, and pressure containment.

  • Proven ability to lead projects, collaborate effectively across teams, and deliver results in a fast-paced startup environment.Strong problem-solving skills, excellent interpersonal and communication skills, and the ability to work in a fast-paced environment

  • Proficiency in CAD software, data analysis software, and experimental design

  • Experience with Matlab, Python, or similar data analysis tools is a plus

  • Commitment to the Aepnus mission, innovative spirit, anticipation capabilities, and a safety and security awareness mindset

  • Ability to lift 40 lbs. as required for cell assembly

Compensation & Benefits

  • Annual Base Salary Range: $150,000 - $170,000, plus equity

  • 100% coverage of medical, dental, and vision insurance for employees

  • 401(k) plan and additional retirement benefits

  • Flexible vacation policy, mental health days, generous sick leave and a week-long winter break in December

Why Aepnus?

At Aepnus, you'll be surrounded by smart, driven people tackling the biggest challenges. We offer:

A front-row seat at the forefront of climate tech. Work alongside our founding team and scientific advisors to scale up new technologies that will change the world and bring them to market.

Rapid growth and opportunity. We're expanding fast, and you'll have a chance to advance quickly whilst learning along the way. Help us achieve our vision for a sustainable future and you'll be rewarded with new responsibilities and career development.

Competitive pay and benefits. We value balance and know that happy, supported employees do their best work. Enjoy perks like equity, flexible vacation, health insurance, and more.

An exciting, fast-paced environment. Join our team and help build Aepnus from the ground up. Every day brings new challenges and rewards as we work to revolutionize the energy industry.

A culture of passion and possibility. Surround yourself with curious people motivated to create positive change.

Apply for this Job

Aepnus is an equal opportunity employer and we value diversity at our company. Aepnus prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

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