{"id":3079267,"url":"https://alion.io/job/amentum-nuclear-criticality-safety-engineer","title":"Nuclear Criticality Safety Engineer","company":{"id":14861,"name":"Amentum","domain":"amentum.com","url":"https://alion.io/company/amentum","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":106,"ghost_share":0,"stale_share":0.991,"repost_share":0,"time_to_fill_p50_days":17,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Energy","role_family":"Energy","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Philadelphia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":69000,"max_usd":124000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":84},"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[],"status":"live","first_seen_at":"2026-10-21T00:00:00Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-25T10:59:41Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Amentum is a global leader in advanced engineering and innovative solutions, supporting critical missions across defense, intelligence, energy, and civilian sectors. Our people are our competitive advantage, driven by purpose, collaboration, and a commitment to delivering excellence for our customers and communities. We are seeking a highly motivated, team-oriented Nuclear Criticality Safety Engineer to support projects out of Pittsburgh, PA.\nCandidates will obtain site-specific Nuclear Criticality Safety (NCS) Analyst Qualification to support the implementation of a DOE-approved Nuclear Criticality Safety Program in an operating non-reactor nuclear facility.\nJob Responsibilities\nProvide technical guidance to operating organizations.\nCollaborate with operating organization personnel on NCS evaluations as the lead NCS Analyst.\nPerform independent reviews of NCS evaluations.\nConduct periodic reviews of fissionable material operations.\nLead and/or participate in NCS response to programmatic issues and criticality process deviations/infractions.\nParticipate in NCS emergency response preparation (emergency procedures, plans, exercises, and drills).\nIndependently prepare, review, and/or present technical reports to the criticality safety community (e.g. American Nuclear Society, etc.).\nConduct NCS training for all levels of employees involved in fissionable material operations.\nAssist in the development and/or review of new or proposed changes to existing NCS programmatic policy and implementing documents.\nLead and/or participate in assessments and audits of the NCS Program.\nMentor of less experienced Nuclear Criticality Safety (NCS) Analysts and Analysts In-Training on all aspects of criticality safety.\nDevelopment, revision, and review of Nuclear Criticality Safety (NCS) documentation, such as Criticality Safety Evaluations (CSEs), Nuclear Criticality Safety Design Analysis, and Calculations (DACs), and various other NCS technical basis documentation.\nComplete the required NCS annual Operational Reviews.\nDaily nuclear facility support; consisting of facility walkdowns, review of NCS requirements, implementing documents, participation at facility Operational Safety Boards, etc.\nRequired Skills/Abilities\nBachelor’s degree in nuclear, engineering, math, or science with a minimum of 1-2 years of Nuclear Criticality Safety (NCS) experience is required (Nuclear Engineering degree preferred) or 7 years of equivalent technical experience in place of a B.S.\nExperience in Approach to Critical (e.g., NCSP Hands-On Criticality Safety Course) preferred.\nDOE-specific experience is highly preferred.\nDemonstrated keen attention to detail.\nCandidate must have the ability to obtain and maintain a DOE “Q” security clearance.\nMust be able to obtain and maintain facility credentials/authorization. Note: U.S. Citizenship is required for facility credentials/authorization at this work location.\nEducational Requirements\nAn alternate combination of education and experience will be considered.\nCompensation Details:\n$90,000+The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.\nBenefits Overview:\nOur health and welfare benefits are designed to support you and your priorities. Offerings include:\nHealth, dental, and vision insurance\n\nPaid time off and holidays\n\nRetirement benefits (including 401(k) matching)\n\nEducational reimbursement\n\nParental leave\n\nEmployee stock purchase plan\n\nTax-saving options\n\nDisability and life insurance\n\nPet insurance\n\nNote: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.\nOriginal Posting:\n10/21/2026 - Until FilledAmentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.\nAmentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.","description_format":"text","description_chars":5147,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Equity","Life insurance","Parental leave","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military Logistics","Business Process Outsourcing (BPO)","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-22T11:42:36Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 2","filings_12m":2,"filings_prev_12m":3,"green_card_filings_12m":0,"median_offered_wage_usd":122500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":58,"band":"ok","label":"Likely open","p_open":1,"p_active":0.584,"p_room":1,"age_days":5,"expected_fill_days":17,"reasons":["conf:18","stale_co","velocity","win:early","comp:junior,brand"],"computed_at":"2026-10-26T05:57:25Z"},"pay":null,"html_url":"https://alion.io/job/amentum-nuclear-criticality-safety-engineer","json_url":"https://alion.io/job/amentum-nuclear-criticality-safety-engineer.json","meta":{"generated_at":"2026-10-26T15:00:17Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":19890,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":14861},"rest":"https://alion.io/mcp/rest/get_company?id=14861"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Famentum-nuclear-criticality-safety-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Famentum-nuclear-criticality-safety-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Famentum-nuclear-criticality-safety-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/amentum-nuclear-criticality-safety-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Famentum-nuclear-criticality-safety-engineer"}]}