Test Process Equipment Engineer

Oklo

Idaho Falls, ID

Full Time

Posted August 20, 2026

$90k - $150k

Nuclear Energy

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Listing evidence and provenance

Source: greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed September 29, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
Pay provenance: Employer-provided pay

Job Description

Oklo is transforming the future of energy, and we are looking for a Test Process Equipment Engineer to support the design, fabrication, commissioning, operation, and modification of test platforms used in advanced nuclear technology development.

Key Responsibilities

Equipment Specification and Selection: Size, select, and specify pumps, valves, heat exchangers, tanks, pressure vessels, heaters, filters, regulators, relief devices, piping components, and other process equipment based on test requirements.
Engineering Analysis: Perform engineering calculations involving fluid flow, pressure drop, heat transfer, equipment capacity, pump performance, valve sizing, piping loads, thermal expansion, system inventory, and operating margins.
Drawing and Document Development: Develop and review piping and instrumentation diagrams, equipment data sheets, system descriptions, technical specifications, equipment layouts, piping isometrics, fabrication drawings, installation details, and as-built documentation.
Test Operations: Support test readiness reviews, startup, operation, monitoring, shutdown, and post-test activities and reports.

Requirements

Bachelor’s degree in mechanical engineering, chemical engineering, nuclear engineering, or a related technical field.
Experience designing, specifying, procuring, commissioning, or troubleshooting process and mechanical equipment.
Experience preparing or reviewing piping and instrumentation diagrams, process-flow diagrams, equipment data sheets, engineering calculations, technical specifications, and vendor drawings.
Working knowledge of pumps, valves, piping, heat exchangers, tanks, pressure equipment, heaters, or similar process components.
Ability to perform fluid-flow, pressure-drop, heat-transfer, and equipment-sizing calculations.
Ability to lift, move, and position equipment weighing up to 30 pounds.
Experience with sodium or other reactive-metal process systems.
Experience developing system operating limits, commissioning procedures, maintenance plans, or test procedures.
Experience with ASME B31.3, ASME Boiler and Pressure Vessel Code, API standards, or other process-equipment codes and standards.
Familiarity with ASME NQA-1 requirements, particularly requirements related to design control, procurement, inspection, testing, document control, and configuration management.
Experience qualifying commercial-grade equipment or supporting commercial-grade dedication activities.
Master’s degree in mechanical, chemical, nuclear, or a related engineering discipline.
Process Engineering Fundamentals: Strong understanding of fluid mechanics, heat transfer, thermodynamics, pressure systems, piping, and industrial process equipment.
Equipment Expertise: Working knowledge of pumps, valves, pressure vessels, heat exchangers, heaters, tanks, filters, regulators, relief devices, vacuum equipment, and gas-handling systems.
Analytical Ability: Able to interpret complex data, distinguish material behavior from test artifacts, identify trends and anomalies, and develop technically defensible conclusions.
Communication: Communicates technical requirements clearly to engineers, technicians, fabricators, suppliers, operators, and quality personnel.
Adaptability: Comfortable working in a development environment where test requirements, equipment configurations, and priorities may evolve.
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.
Oklo requires remote employees to travel to headquarters (Santa Clara, CA) twice a quarter annually, based on business or team needs, including attendance at team meetings, off-sites, and other company events or gatherings. For the first two weeks of onboarding, employees are required to be in person at headquarters in Santa Clara, CA.