How to apply for Probabilistic Risk Assessment Engineer

About Oklo

Oklo is developing next-generation fast fission technology and recycling nuclear waste to provide clean, reliable, affordable energy. The company is working on reactor design, licensing, deployment, and operation. This role supports that work through probabilistic risk assessment.

About the role

The Probabilistic Risk Assessment Engineer conducts quantitative risk analyses for fast reactor designs. This includes identifying initiating events through FMEAs, building event trees and fault trees, quantifying event sequence probabilities, and evaluating consequences. The role also feeds risk insights back into design to improve reliability and safety, and supports licensing through technical reports.

A typical day

A typical day may involve building or updating PRA models, running quantification analyses, and meeting with engineering teams to review event sequences and risk insights. You may also draft technical documentation for licensing or discuss how risk findings can inform design changes. The job description does not specify daily routines, so ask about typical workflows and team cadence in the interview.

Who Oklo is looking for

• At least 5 years of work experience in nuclear engineering or a related field.
• Bachelor's degree or higher in nuclear engineering (or a closely related discipline).
• Hands-on experience with PRA methods: FMEAs, event trees, fault trees, and quantification of event sequence probabilities.
• Experience evaluating external hazards and incorporating risk insights into engineering design.
• Ability to write technical reports and analyses that support licensing activities.

Tips for this application

• Tailor your resume to show specific PRA deliverables you have produced: FMEAs, event trees, fault trees, and quantified risk results.
• Quantify your experience where possible (e.g., number of PRA models built, systems analyzed, or licensing submittals supported).
• Highlight any experience with fast reactor designs or advanced reactor concepts, since Oklo's work is on fast fission technology.
• Mention experience with external hazards analysis, as the job description lists it as a specific responsibility.
• If you have worked with engineering design teams to feed risk insights back into design, describe that collaboration explicitly.

What to cover in your cover letter

['Your direct experience conducting probabilistic risk analyses, including the specific techniques listed in the job description.', 'How you have used risk insights to improve system reliability or safety in a design context.', 'Any experience supporting licensing activities through technical reports or analyses.', "Your interest in Oklo's specific approach: fast fission technology and nuclear waste recycling."]

Research before applying

• Oklo's reactor design and how fast fission technology differs from conventional light-water reactors.
• Oklo's licensing strategy and any public filings or updates with the Nuclear Regulatory Commission.
• The company's approach to recycling nuclear waste and how that connects to the reactor design.
• Ask in the interview how the PRA team is structured and how it interacts with design and licensing teams, since the job description does not specify team size or reporting lines.

Likely interview topics

Based on the job description, expect questions about:

• Walk through a PRA you developed: how you identified initiating events, built event trees and fault trees, and quantified probabilities.
• How you have applied FMEA or other hazards evaluation approaches in practice.
• Your experience evaluating external hazards in a PRA context.
• How you have worked with design teams to incorporate risk insights and improve reliability.
• Your familiarity with licensing processes and the technical reports or analyses you have produced to support them.

Common mistakes to avoid

• Submitting a generic resume that does not name specific PRA methods (FMEA, event trees, fault trees) or deliverables.
• Failing to connect your PRA experience to design improvement or licensing support, which are core parts of this role.
• Showing no familiarity with Oklo's technology or the fast reactor context, which is central to the position.