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Oklo

Senior Neutronics Engineer - Isotope Production

Oklo · Santa Clara, CA or Remote

Posted 27 days ago · $130,000-$220,000

or apply directly on Oklo's site. We never take the application ourselves.

Is this posting real?

This role has been open
27 days
Oklo's roles stay open a median of 45 days
Reposted
No
Salary listed
Yes
97% of Oklo's roles list one
Ghost-job risk at Oklo
high
39 stale, 3 reposted of 72 open
Hiring momentum
100 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-17

Measured from postings appearing on and disappearing from Oklo's own greenhouse board since 2026-08-03. Full hiring picture for Oklo.

About this role

The Senior Neutronics Engineer at Oklo will focus on developing and executing neutronics analyses for an isotope production reactor. This role involves collaboration with various engineering teams to optimize reactor core design, perform lifecycle analyses, and ensure safety evaluations. The engineer will utilize advanced computational models and methods to support core design, fuel management, and shielding analyses, while documenting results and providing technical feedback to multidisciplinary teams.

Our read on this posting4.6out of 5
benefits
5/5
freshness
4/5
career value
4/5
role clarity
5/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Oklo as an employer.

What you need

  • Bachelors, Masters, or PhD in a technical field such as nuclear engineering
  • Experience in reactor design and analysis
  • Fluency with Python
  • Proficiency with high performance computing systems
  • Proficiency with MCNP, SERPENT, or SCALE

Nice to have

  • Hands on experience with irradiation experiments at a research and test reactor

What you get

  • Salary: $130,000-$220,000
  • Flexible time off
  • Equity
  • Bonuses
  • Competitive pay
  • 401(k)

Worth weighing

  • Remote employees must travel to headquarters twice a quarter
  • Onboarding requires in-person attendance at headquarters for the first two weeks
  • The role requires operating in a highly iterative and independent environment
  • The company culture favors startup-like efficiency over established processes

Summarised from Oklo's posting. Read the full original.

Listed by Oklo on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.

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