{"id":1668847,"url":"https://alion.io/job/fermilab-senior-mechanical-engineer","title":"Senior Mechanical Engineer","company":{"id":3856694,"name":"Fermilab","domain":"fermilab.ai","url":"https://alion.io/company/fermilab","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":75,"open_postings":8,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-07T05:47:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":111400,"max":146600,"currency":"USD","period":"year","gross":null,"usd_annual":146600},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AutoCAD","optional":false}],"status":"live","first_seen_at":"2026-09-09T00:00:00Z","employer_posted_date":"2026-09-09","last_verified_at":"2026-10-08T00:11:26Z","board_verified":true,"closed_at":null,"days_open":29,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":29},"description":"The expected hiring range for this position is:\n$111,400.00-$146,600.00.Please note that the pay range information is a general guideline only. The pay offered to a selected candidate will be determined based on factors such the scope and responsibilities of the position, qualifications of the selected candidate, business considerations, internal equity, and external market pay for comparable jobs.\nAbout the Role:\nThe Fermilab Infrastructure Services Division (ISD) is seeking a Senior Mechanical Engineer. This individual is responsible for upper-level engineering projects requiring engineering creativity in developing innovative concepts and techniques. The ISD Senior Mechanical Engineer leads and contributes to projects in areas such as design, design review, procurement, manufacture, installation, test, and initial operations of a project with extensive & diversified engineering requirements in compliance with all applicable local, state, and federal regulations, requirements and standards, and all Department of Energy (DOE) orders. This role may oversee sub-contractors or supervise/manage an engineering group.\nWhat your day-to-day as a Senior Mechanical Engineer at Fermilab will look like:\nAnalyzing data and performing engineering calculations. Developing designs of specific parts, components, or phases of a project.\nDeveloping specifications, designs, and documents for major and technically complex engineering projects and design solutions. Work involves a variety of moderately complex engineering techniques.\nPlanning projects from inception to completion and brings them to operating status. Estimating manpower, scheduling work, coordinating and directing technicians.\nProviding technical direction to draftsmen, designers, engineering associates, technicians, or less senior engineers. Coordinating and/or supervising technicians and other engineers, as assigned. May supervise an engineering/technical team or department, as assigned.\nResearching and proposing solutions to engineering problems and provides analyses of alternatives to manager(s).\nParticipating in procurement, as well as manufacturing, installation, testing, and operation.\nAssisting or leading in the development of cost estimates, as well as the monitoring and/or management of budgetary obligations.\nReviewing and approving work before hardware and financial resources are committed, ensuring conformance to specifications and cost/time constraints.\nProviding and implementing changes in methods, design, or equipment in assigned area and contributes to the overall safety and completion of assignments.\nContributing to setting lab-wide engineering policies, safety standards or technical standards.\nServing on safety panels, review committees, and other subcommittees as assigned.\nMay participate in technical conferences and publication.\nMay provide supervision or leadership of a team including hiring, promotions, performance reviews, training, disciplinary actions, team exits, and other duties as assigned.\nPerforming other duties as assigned by supervisor.\nAbiding by and being responsible for performing all duties in accordance with all environmental, health and safety regulations and practices pertinent to this position.\nEssential Skills and Competencies for Success:\nBachelor’s or Master’s in an applicable Engineering discipline from an ABET accredited institution\n5-10 years of engineering experience working at an MEP consulting firm.\nApplicable Knowledge, Skills and Abilities Required:\nIn-depth knowledge and proficiency in application of theories, concepts, principles, and methodology for the engineering discipline. \nPossess extensive project planning skills in developing specifications and documents for major and technically complex, high-level, and highly visible engineering projects and engineering design solutions. \nAbility to perform a variety of complex and advanced engineering techniques.\nExperience with AutoCAD required. Experience with Revit is a plus.\nProfessional Engineer licensure is required. Licensure in State of Illinois is a plus.\nThe successful candidate will have experience in one or more of the following related areas:\nDesign of plumbing systems required\nWorking knowledge of building codes related to plumbing and mechanical systems required\nDesign of hydronic piping systems desired\nDesign of HVAC systems desired\nExperience with energy modeling/HVAC software desired \nExposure to Building Commissioning desired\nFamiliarity with ASHRAE requirements and applications desired\nWork Arrangement:\nPlease note that the described work arrangement is subject to change based on business needs and is not guaranteed to be final.\nOnsite: This is an onsite role, and the candidate must be able to work from our Batavia office.\nBenefits/Perks:\nFermilab offers a competitive and comprehensive benefits program, including:\nMedical, Dental, Vision and Flexible Spending Accounts\nPaid time off\nLife insurance\nShort and Long-term disability insurance\nRetirement benefits\nOnsite day care\nWhy Fermilab:\nFermilab is America’s premier laboratory for particle physics and accelerator research, funded by the U.S. Department of Energy. We support discovery science experiments in Illinois and locations around the world, including deep underground mines in South Dakota and Canada, mountaintops in Arizona and Chile, CERN in Europe and the South Pole.\nPre-Employment Screening:\nDrug-Free Workplace & Pre-Employment Screening\nFermilab is dedicated to fostering a safe, productive and drug-free environment. An offer of employment is contingent upon the successful completion of a background check and drug screening.\nHSPD-12\nIn accordance with Homeland Security Presidential Directive 12 (HSPD-12) new employees are required to obtain and maintain a HSPD-12 Personal Identity Verification (PIV) Credential. To obtain this credential, new employees must successfully complete and pass a federal background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment.\nForeign Government Sponsored Activities\nFermilab employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. Such individuals will be asked to disclose any participation for review by Fermilab's Office of General Counsel.\nREAL-ID Requirement for access to Fermilab Campus\nFermilab requires all members of the public to produce a REAL-ID, or equivalent, to access the Fermilab Campus for interviews or career events. A list of acceptable forms of ID can be found here: https://get-connected.fnal.gov/wp-content/uploads/2021/09/REALID-Documents.pdf. If a candidate is selected for an interview but does not possess any of the equivalent documents, we may schedule a virtual interview.\nEqual Opportunity Statement\nFermilab is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information, and other legally protected categories.","description_format":"text","description_chars":7499,"description_truncated":false,"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":["Equity","Life insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-02T06:18:12Z"}],"visa":[],"liveness":{"score":56,"band":"ok","label":"Likely open","p_open":1,"p_active":0.753,"p_room":0.75,"age_days":28,"expected_fill_days":39,"reasons":["conf:1","win:late"],"computed_at":"2026-10-07T05:47:15Z"},"pay":{"stated_usd_annual":146600,"is_top_pay":true},"html_url":"https://alion.io/job/fermilab-senior-mechanical-engineer","json_url":"https://alion.io/job/fermilab-senior-mechanical-engineer.json","meta":{"generated_at":"2026-10-08T01:46:35Z","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","counted_by":"address","units_charged":1,"used_today":3100,"day_limit":5000,"remaining_today":1900,"minute_limit":60,"resets_at":"2026-10-09T00:00:00Z"}},"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":3856694},"rest":"https://alion.io/mcp/rest/get_company?id=3856694"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffermilab-senior-mechanical-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%2Ffermilab-senior-mechanical-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%2Ffermilab-senior-mechanical-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/fermilab-senior-mechanical-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffermilab-senior-mechanical-engineer"}]}