Fuel Performance Engineer



Santa Clara, CA, USA
Posted on Saturday, December 23, 2023
Thanks for your interest in Oklo! We are searching for a Fuel Performance Engineer to join our team.

Position Description

Fuel performance engineers at Oklo are responsible for the fuel performance analyses and verification of fuel design in a reactor. This includes engineering analyses, modeling and simulation, and clear and thorough documentation of the analyses, as well as interfacing with our fuel fabrication and manufacturing teams.

Specific responsibilities may include:

  • Analyzing fuel performance across expected operating conditions.
  • Supporting experimental fuel campaigns.
  • Devising analysis methodologies that efficiently and effectively build confidence in a design.
  • Performing engineering analysis, which can include thermal, stress, fatigue, tolerance, safety, manufacturability, and cost.
  • Planning for manufacturing and assembly of fuel components and subsystems.
  • Collaborating cross-functionally to define design goals, and providing technical feedback to quick-iterating design teams.
  • Documenting work using modern tools and techniques, and writing well-written, thoughtful technical reports.


We are looking for a fuel performance engineer that is:

  • Passionate about clean energy, and making advanced fission a reality
  • Willing and able to learn quickly and adapt to evolving challenges
  • Eager to work on a dynamic team, receive constructive feedback, and grow with us
  • Comfortable in a fast-paced, highly iterative startup environment where we think differently and do things in new ways
  • Excited to think creatively, critically, and reflectively about the problems they are solving
  • Willing to propose novel and creative solutions to technical problems
  • An excellent writer who can write in modern active voice (make your cover letter compelling, and write it well!)

Who you are:

A startup person: You aren't driven by titles or hierarchy, and prefer efficiency to excess process. You don't need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won't enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that.

Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn't about a fake or arbitrary "pieces of flair" mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals.

A team-player: Oklo genuinely is a team. We aren't about taking credit for ourselves, and we aren't about pushing blame to others. We do incredible things because we work as a team.

An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator.

Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day.

Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward.

Minimum Qualifications:

  • Bachelor's degree in engineering
  • Experience with nuclear fuel design and analysis
  • Experience in design for manufacturing
  • Excellent math skills

Bonus Qualifications:

  • Experience with fuel analysis and fuel performance software such as BISON, LIFE-METAL, etc.
  • Experience with engineering simulation software, such as ANSYS
  • Experience in material selection and material analysis
  • Fluency in Python

About Oklo compensation:

Salary: $66,000-$146,000

Salary may fall outside of the range provided and will be dependent on applicant experience.

Oklo offers flexible time off, equity, competitive pay, 401k, health insurance, FSA, flexible work hours, and other benefits.

We are looking to fill this position immediately!

About Oklo Inc.: Oklo is a California-based company developing clean energy plants to provide emission-free, reliable, and affordable energy using advanced fission. Oklo is a fast-growing startup with a history of reliable funding and milestones for more than 5 years. Oklo's first product is a microgrid scale powerhouse. The powerhouse can produce clean energy for decades without needing to refuel, and also has the capability to turn nuclear waste into clean energy.

Oklo received a Site Use Permit from the U.S Department of Energy, demonstrated fabrication of its fuel, was awarded fuel from the Idaho National Laboratory, and submitted the first accepted advanced fission license application to the regulator.

Oklo has been featured in Popular Mechanics, Wired, Architectural Digest, Hyperallergic, POWER Magazine, has been the subject of a Harvard Business School case, and was featured in the documentary The New Fire, among many other features.