{"id":1215839,"url":"https://alion.io/job/oklo-nuclear-commissioning-and-startup-engineer","title":"Nuclear Commissioning and Startup Engineer","company":{"id":2750,"name":"Oklo","domain":"oklo.com","url":"https://alion.io/company/oklo-inc","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":83,"open_postings":10,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":87,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Santa Clara, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":135000,"max":185000,"currency":"USD","period":"year","gross":null,"usd_annual":185000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-09-25T07:27:19Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-15T13:46:54Z","board_verified":true,"closed_at":null,"days_open":20,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":20},"description":"Thanks for your interest in Oklo! We are searching for a Nuclear Commissioning and Startup Engineer to join our Operations Engineering team.\nPosition Description\nThe Nuclear Commissioning and Startup Engineer supports the planning, coordination, and field execution of commissioning and startup activities for Oklo facilities. This role helps transition systems and facilities from construction through testing, turnover, operational readiness, initial operation, and project completion. This role works directly with Operations, Engineering, Construction, Maintenance, Quality, Safety, vendors, contractors, and other project organizations to ensure systems are properly scoped, tested, documented, accepted, and ready for operation. This engineer develops and reviews commissioning plans, test procedures, system turnover requirements, schedules, resource needs, and readiness criteria and then provides onsite engineering support during execution.\nDuring field assignments, the Nuclear Commissioning and Startup Engineer may serve as a system-based commissioning engineer, test engineer, shift test engineer, or field engineering lead. The engineer confirms system and test readiness, supports test teams, monitors plant response and test data, coordinates troubleshooting, resolves deficiencies, and ensures results are properly evaluated and documented.\nThis is a project-deployment role with remote work between field assignments. When assigned to an active commissioning or startup project, the Nuclear Commissioning and Startup Engineer must be prepared to mobilize to the applicable project site for periods lasting several weeks to several months. Upon completion of an assignment, the engineer may return to remote work until mobilized for the next project. The frequency, location, and duration of assignments will vary based on company and project needs.\nSpecific responsibilities may include:\nDevelop and implement commissioning and startup plans, strategies, schedules, system-based work scopes, and execution methods\nDefine commissioning boundaries, test objectives, prerequisites, acceptance criteria, required resources, and system turnover requirements\nDevelop, review, verify, and maintain preoperational, commissioning, integrated, and startup test procedures\nTranslate design requirements, safety requirements, specifications, calculations, vendor information, and system requirements into executable test methods and acceptance criteria\nDevelop and maintain commissioning test matrices, requirements-traceability tools, system status records, turnover packages, and test completion documentation\nSupport systemization and define the structures, systems, components, boundaries, and work packages needed for effective commissioning and turnover\nCoordinate construction completion, system walkdowns, punch-list resolution, turnover documentation, and acceptance of systems for testing\nVerify test prerequisites, plant configuration, test boundaries, equipment status, temporary configurations, instrumentation, personnel, and procedural readiness before test execution\nParticipate in pre-job briefs, daily coordination meetings, shift turnovers, schedule reviews, and test-readiness reviews\nProvide field engineering oversight during commissioning and startup testing\nMonitor system response and test data in real time and compare observed performance against expected results and acceptance criteria\nSupport operators and test directors during system manipulations, integrated testing, startup testing, and other significant plant evolutions\nIdentify unexpected conditions, emerging risks, procedure deficiencies, equipment problems, and adverse trends during field activities\nExercise stop-work responsibility when testing cannot be performed safely or within approved requirements and controls\nCoordinate troubleshooting among Operations, Engineering, Maintenance, Construction, vendors, contractors, and other technical organizations\nDocument test deficiencies, open items, nonconformances, corrective actions, retest requirements, and final dispositions\nEvaluate test results and prepare or support test reports, completion packages, turnover records, and recommendations for system acceptance\nSupport the transition from component-level testing to system testing, integrated plant testing, startup testing, and operational acceptance\nCoordinate vendor and contractor testing and ensure activities are aligned with Oklo requirements, facility configuration, work controls, and project schedules\nSupport development and implementation of work-control, tagging, lockout/tagout, foreign-material-exclusion, configuration-control, and equipment-status-control practices needed during commissioning\nParticipate in operational-readiness reviews, management assessments, inspections, audits, and resolution of readiness findings\nProvide input to operating procedures, maintenance procedures, training materials, system descriptions, and operational programs based on commissioning and startup experience\nCapture lessons learned and use field experience to improve future test procedures, commissioning methods, plant designs, and repeatable deployment practices\nSupport multiple Oklo projects and facilities as priorities, schedules, and project phases evolve\nQualify as an Oklo plant operator or complete other assigned technical qualifications, as applicable\nMaintain awareness of fast-reactor design, commissioning methods, operating experience, testing practices, and relevant industry developments\nMinimum Qualifications:\nBachelor’s degree in nuclear, mechanical, electrical, chemical, or another relevant engineering or technical discipline; equivalent directly applicable nuclear, commissioning, or operational experience may be considered in lieu of a degree\n5+ years of experience in commissioning and startup, nuclear operations, system testing, field engineering, power generation, naval nuclear propulsion, national laboratory operations, construction completion, or another highly regulated technical environment\nHands-on field experience supporting the testing, commissioning, startup, operation, maintenance, or troubleshooting of complex mechanical, electrical, instrumentation and controls, or process systems\nExperience developing, reviewing, or executing technical test procedures, commissioning procedures, operating procedures, or similar controlled work instructions\nExperience translating design requirements, specifications, calculations, safety requirements, or vendor information into executable tests and acceptance criteria\nExperience reading and interpreting technical documents such as piping and instrumentation diagrams, electrical single-line diagrams, wiring diagrams, logic diagrams, control narratives, system descriptions, specifications, calculations, and vendor manuals\nWorking knowledge of system turnover, configuration control, work control, equipment status, test boundaries, and safe field execution\nAbility to evaluate system performance, interpret test data, identify abnormal conditions, and coordinate technical problem-solving in the field\nDemonstrated ability to work across Operations, Engineering, Construction, Maintenance, Quality, Safety, vendors, and contractors\nAbility and willingness to mobilize to project sites for extended assignments lasting several weeks to several months\nAbility to work shifts, extended hours, nights, weekends, or holidays as required during commissioning and startup activities\nAbility to travel to Oklo facilities, national laboratories, vendor facilities, and other project locations as business needs require\nAbility to obtain and maintain unescorted access to nuclear facilities, if required\nBonus Qualifications:\nExperience commissioning or starting up a nuclear facility, power plant, first-of-a-kind industrial facility, research reactor, microreactor, or Department of Energy nuclear facility\nExperience as a reactor operator, senior reactor operator, shift technical advisor, test engineer, system operator, engineering watchstander, or other nuclear facility operator\nCurrent or previous NRC Reactor Operator or Senior Reactor Operator license or certification\nRelevant qualification through the U.S. Naval Nuclear Propulsion Program, such as Engineering Officer of the Watch, Propulsion Plant Watch Officer, or Engineering Watch Supervisor\nExperience with sodium-cooled fast reactors, liquid-metal systems, fast-reactor technology, or sodium-system testing\nExperience with steam plants, heat-transport systems, electrical distribution, instrumentation and controls, digital control systems, or balance-of-plant systems\nExperience with systemization, construction completion, walkdowns, punch lists, turnover packages, completions-management software, or system acceptance\nExperience developing or executing preoperational, integrated, startup, surveillance, or acceptance testing\nExperience serving as a commissioning engineer, startup engineer, test engineer, shift test engineer, test director, or system-based commissioning lead\nExperience supporting joint test groups, test-review boards, readiness reviews, or other formal test-governance organizations\nExperience overseeing vendor or contractor testing and coordinating multi-organization field activities\nExperience with troubleshooting, root-cause evaluation, corrective-action programs, nonconformance resolution, or retesting\nExperience implementing work control, tagging, lockout/tagout, foreign-material-exclusion, configuration-control, or equipment-status-control programs\nFamiliarity with applicable NRC requirements, Department of Energy requirements, industry standards, and nuclear safety and quality-assurance programs\nExperience with field data collection, test instrumentation, data trending, test-result evaluation, and technical report preparation\nExperience working with regulators, national laboratories, construction contractors, vendors, customers, or other external technical stakeholders\nCompetencies\nWe are looking for a Nuclear Commissioning and Startup Engineer who is:\nField-oriented and comfortable working directly with equipment, operators, technicians, contractors, and test teams\nA systems thinker who understands how individual components and systems interact as an integrated facility\nAble to convert design requirements and technical information into safe, practical, and executable field activities\nDisciplined in confirming prerequisites, boundaries, plant configuration, procedural compliance, and acceptance criteria\nCalm and methodical when responding to unexpected test results, equipment problems, changing conditions, and schedule pressure\nWilling to stop work, ask questions, and resolve uncertainty before proceeding\nTechnically rigorous while remaining practical and focused on safe execution and project completion\nComfortable moving between planning, procedure development, field execution, troubleshooting, data evaluation, and final documentation\nAble to coordinate multidisciplinary teams and maintain clear communication during complex or high-risk activities\nPrepared to live and work near project sites for extended periods while supporting major commissioning and startup campaigns\nAble to adapt between intensive field assignments and remote planning work as project needs evolve\nPassionate about clean energy\nAn optimist at heart\nPassionate about making advanced fission a reality\nWilling and able to learn quickly\nWilling to think differently and do things in new ways\nComfortable in a fast-paced, highly iterative startup environment\nExcited to think creatively, critically, and reflectively about the problems they are solving while not leaning only on what has been done before\nWilling to propose novel and creative solutions to technical problems\nAn excellent writer who can write in a modern active voice, so make your cover letter compelling and write it well!\nAble to communicate technical content and results verbally\nWho you are:\nA startup person: You aren't dri...","description_format":"text","description_chars":16822,"description_truncated":true,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Company events","Equity","Flexible schedule","Flexible time off","Health insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Nuclear 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