Jobs and Careers
ZE

Senior Mechanical Engineer

Zeno Power
United Statesfull_timeVerifiedPosted 4 Sept 2025
💰 $185,000/yr($145,000/yr$185,000/yr)

About the role

Company Overview

Zeno Power’s (Zeno) mission is to provide clean, plug-and-play power anywhere in the universe. To do that, Zeno is developing a next-generation radioisotope power system (RPS) that generates carbon-free, resilient power for decades, utilizing material found in nuclear waste. Zeno’s technology is both light-weight and cost-effective compared to historic RPS, opening up broad market opportunities in space and terrestrially. To bring this breakthrough technology to market, Zeno is seeking out purpose-driven and innovative professionals who are comfortable working in a startup environment. Team members will have a direct impact in enabling commercial and national security missions from the depths of our oceans, to the surface of the moon, and in austere environments here on Earth.

Zeno is proud to be an Equal Opportunity Employer and is committed to attracting, retaining, and developing a highly qualified, diverse, and dedicated work force. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law.

Mechanical Design Engineer

Zeno is seeking a highly motivated Mechanical Design Engineer to support the mission-oriented efforts of developing and bringing to market Radioisotope Power Systems (RPS) technologies. This position will report to the Mechanical Design Manager.

In this role you will:

  • Work closely with a team of engineers to support the design, testing and manufacturing of RPS fuel and structure components.
  • Interface with the structural, thermal and nuclear teams to implement and optimize the design based on system requirements.
  • Generate models to support thermal and structural analyses.
  • Interpret and apply design and drafting standards (ASME Y14.5M) when creating and evaluating drawings.
  • Work on a wide range of systems related to RPS.
  • Support projects including vendor interaction, fabrication and inspection.

Key Qualifications and Skills

  • B.S. or higher in Mechanical Engineering or equivalent from accredited university, 6+ years relevant experience for Senior, 10+years relevant experience for Principal.
  • Experience collaborating with scientists and design engineers to achieve efficient and cost-effective designs.
  • Understanding of thermal and structural aspects to help design iterations.
  • Proficient with 3D CAD programs (SolidWorks preferred or similar).
  • Experience with Geometric Dimensioning and Tolerancing (GD&T) implementation and Analysis (ASME Y14.5).
  • Familiar with different types of assembly fixtures, material handling, test fixtures, structural weldments, and custom machines.
  • Experience with hot cell tooling or remote handling a plus.
  • Must be a self-starter and possess ability to coordinate and contribute to design effort with minimal direction.
  • Must be able to demonstrate being able to drive a design effort of complex system from start to finish.
  • Experience performing activities under a quality standard (such as NQA-1, AS 9100, or similar).
  • Able to meet deadlines and perform under pressure in an uncertain environment.
  • Demonstrate skill in working independently as well as collaboratively within a team.
  • Must have excellent written and oral communication skills.

Job Functions

  • Position requires in-office presence in Seattle (South Lake Union) on Tuesdays, Wednesdays, and Thursdays, remote work is optional on Mondays and Fridays.
  • Travel: Travel is required, <10%
  • Motor Abilities: Sitting and/or standing for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)
  • Physical exertion and/or requirements: Minimal, with ability to safely lift up to 15 pounds
  • Repetitive work: Prolonged
  • Special Senses: Visual and audio focused work
  • Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hrs./day

Compensation and Benefits

The anticipated salary band for this position is $145,000 - $185,000. The final job level and compensation will be determined by various factors such as a candidate's relevant work experience, years of relevant experience, skills, qualifications, certifications, and other business considerations.

In addition to competitive compensation, we also offer a generous benefits package, which includes:

  • Stock options
  • Flexible paid time off
  • 401k plan with employer match
  • 16 weeks of paid family leave
  • Employer HSA contributions
  • Transit benefits to p

Apply for this role

Generate a tailored application kit with a matched cover letter, interview prep, and CV highlights — in under 60 seconds.

Apply Now →Generate Application Kit

Free account required — sign up in 30s

Company

Zeno Power

View company profile →