{"id":1668835,"url":"https://alion.io/job/fermilab-thermal-fluids-mechanical-engineer","title":"Thermal-Fluids 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":80,"open_postings":10,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":16,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"middle","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":88800,"max":116900,"currency":"USD","period":"year","gross":null,"usd_annual":116900},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AutoCAD","optional":true}],"status":"live","first_seen_at":"2026-09-22T00:00:00Z","employer_posted_date":"2026-09-22","last_verified_at":"2026-10-13T11:51:14Z","board_verified":true,"closed_at":null,"days_open":21,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":21},"description":"The expected hiring range for this position is:\n$88,800.00-$116,900.00.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.\nThis position is not eligible for referral bonus program and sponsorship assistance.\n\nThis position is eligible for relocation assistance.\nAbout the Role:\nThe Mechanical Support Department of the Accelerator Division within Fermilab is seeking a Mechanical Thermal Fluids Engineer. Under general directions, this individual will be responsible for planning, researching, and developing large/ major engineering projects. They will lead and contribute to areas such as design, procurement, manufacture, installation, testing, and initial operation of thermal systems in compliance with all applicable local, state, and federal regulations, requirements, and standards, and all Department of Energy (DOE) orders. Responsibilities will also include the estimation of manpower, work scheduling, coordinating and directing or managing technicians and other engineers as assigned. Will review progress and evaluate results.\nWhat your day-to-day as a Thermal Fluids Mechanical Engineer at Fermilab will look like:\nUtilize fundamental mechanical engineering concepts and principles to complete assignments and develop familiarization with the Laboratory’s method of project engineering, from the design stage through review, procurement, fabrication, installation, test, and operation.\nPerform mechanical design, analysis, specification, and construction of fluid cooling piping systems that support the operation of the accelerator complex, including the temperature control of beamline components such as magnets, collimators, RF cavities, beam instrumentation, high-powered targets, kickers, and associated beam components.\nParticipate in and lead efforts related to thermal-fluid system design, piping system fluid flow analysis, and heat transfer analysis.\nLearn the operations of existing accelerator fluids systems and provide operations engineering support by troubleshooting system issues and designing upgrades to existing systems to improve their reliability.\nParticipate in the design of compressible and incompressible thermal fluids systems to support the accelerator.\nWrite fabrication specifications that involve welding, brazing, bonding, and soldering techniques with materials such as aluminum, stainless steels, copper, brass, PVC, CPVC, PVDF etc. \nWork in a team environment and under the supervision of a senior engineer.\nBe responsible for directing the activities of drafters, designers, technicians, and skilled trades on their projects.\nOccasionally direct the activities of co-op engineering students and interns on their projects.\nCommunicate with outside vendors, contractors, and fabricators verbally and through written specifications and engineering drawings.\nAbide by and be responsible for performing all duties in accordance with all environmental, health and safety regulations and practices pertinent to this position. \nSkills and Attributes for Success:\nBachelor’s in an applicable Engineering discipline from an ABET accredited institution with 4+ years of engineering experience, or a Master’s or PhD in an applicable Engineering discipline from an ABET accredited institution with 2+ years of engineering experience.\n Applicable Knowledge, Skills and Abilities Required:\nDemonstrated ability to communicate expectations clearly using verbal and written practices with customers / stakeholders, and with team members.\nDemonstrated ability to work effectively under the requirements of schedules and shifting priorities.\nDemonstrated ability to perform fluid mechanics, thermodynamics, heat transfer, piping network calculations, and engineering mechanics calculations including statics, stress, strain, and deflection. \nBasic understanding of electrical engineering concepts such as current, voltages, resistance, frequencies, and speed requirements. \nDemonstrated ability to create and read mechanical drawings, including piping and instrumentation diagrams (P&ID) and process piping flow schematics.\nDemonstrated ability in performing mass and energy balance calculation on various hydraulic and heat transfer components.\nDemonstrated ability in performing heat transfer calculations to size heat exchangers.\nDemonstrated knowledge of machine shop practices and techniques.\nDemonstrated knowledge of piping flexibility analysis is desirable.\nMust have strong computing skills including preparing and documenting engineering calculations, creating 3D models and 2D drawings using CAD software data presentation, and project management activities (cost estimates, schedules).\nFamiliarity of CAD software for the creation of piping fluid flow network systems is a plus.\nDemonstrated ability to creatively solve engineering problems and troubleshoot operational issues.\nKnowledge of welding and brazing practices (e.g., TIG, MIG and torch brazing) as related to manufacturing and fabrication of piping is desirable.\nKnowledge of materials, metallurgy, and radiation damage of materials is desirable.\nKnowledge of codes and standards such as ASME, AISC, CGI, API and ANSI/ASME pressure vessel and piping codes is desirable.\nUse of geometric dimensioning and tolerancing on drawings per ASME Y14.5 is desirable. \nSkills or experience in AFT Fathom, AFT Arrow, and ANSYS Workbench are desirable.\nSkills or experience in AutoCAD Plant are desirable.\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":8645,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Life insurance","Relocation assistance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-02T06:18:12Z"}],"visa":[],"liveness":{"score":25,"band":"fade","label":"Fading","p_open":1,"p_active":0.457,"p_room":0.55,"age_days":21,"expected_fill_days":16,"reasons":["conf:6","stale_co","win:tail"],"computed_at":"2026-10-13T05:45:00Z"},"pay":{"stated_usd_annual":116900,"is_top_pay":true},"html_url":"https://alion.io/job/fermilab-thermal-fluids-mechanical-engineer","json_url":"https://alion.io/job/fermilab-thermal-fluids-mechanical-engineer.json","meta":{"generated_at":"2026-10-13T15:21:42Z","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":23450,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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-thermal-fluids-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-thermal-fluids-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-thermal-fluids-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-thermal-fluids-mechanical-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffermilab-thermal-fluids-mechanical-engineer"}]}