{"id":2510845,"url":"https://alion.io/job/exp-senior-mechanical-engineer-12","title":"Senior Mechanical Engineer","company":{"id":1879430,"name":"EXP","domain":"exp.com","url":"https://alion.io/company/exp-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"A","score":94,"open_postings":201,"ghost_share":0,"stale_share":0.06,"repost_share":0,"time_to_fill_p50_days":112,"computed_at":"2026-11-08T05:47:12Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Towson, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140000,"max":180000,"currency":"USD","period":"year","gross":null,"usd_annual":180000},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AutoCAD","optional":true}],"status":"live","first_seen_at":"2026-08-25T20:20:06Z","employer_posted_date":"2026-08-25","last_verified_at":"2026-11-08T10:26:39Z","board_verified":true,"closed_at":null,"days_open":74,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":74},"description":"At EXP, we're driven to provide innovative solutions for the world's built and natural environments. As a team of engineers, architects, designers, scientists, creators, and a community of professionals, we bring diverse and talented people together to solve the world's most complex challenges. Here, you join a team that leverages differences, harnesses entrepreneurial spirit in an employee-owned company, believes diversity gives us strength, seeks sustainable results, and shares ambitions for each other, our clients, and the communities we serve. Together, we are EXP.\nAre you ready to design your future?\nBe our nextSenior Mechanical Engineer\nYour work environment at EXP\nIn this role, you will be part of the MEP team supporting Transit, Transportation, Commercial, Institutional, and Public Infrastructure projects throughout the Mid-Atlantic region. This position provides technical leadership for HVAC, plumbing, and fire protection systems while working closely with multidisciplinary project teams and clients.\nYour Responsibilities\nLead the design and delivery of HVAC, plumbing, and mechanical systems from planning through construction.\nPrepare and review engineering calculations, load analyses, one-line diagrams, studies, reports, and technical specifications.\nPerform equipment sizing, selection, and scheduling for airside and hydronic systems, including chillers, boilers, cooling towers, air handling units, pumps, air terminals, and water source heat pumps.\nDevelop equipment room layouts and system concepts during planning, schematic design, and design development phases.\nDesign and coordinate mechanical systems for transit stations, maintenance facilities, tunnels, commercial buildings, and other public infrastructure projects.\nCoordinate closely with architectural, structural, electrical, civil, fire protection, and other engineering disciplines.\nReview codes, standards, and client requirements to ensure project compliance, including applicable mechanical codes and NFPA standards.\nConduct QA/QC reviews of calculations, drawings, specifications, and deliverables.\nSupport project managers with scope development, budgeting, work planning, scheduling, and client communications.\nReview submittals, respond to RFIs, perform field investigations, and support construction administration activities.\nDevelop sequences of operation and provide system analysis for HVAC and building performance.\nManage multiple projects simultaneously while maintaining quality, schedule, and budget objectives.\nMentor and develop junior engineers and designers, providing technical guidance and leadership.\nApply risk management and quality management procedures throughout project execution.\nThe Skills and Knowledge You Bring\nBachelor's degree in Mechanical Engineering from an accredited institution.\nProfessional Engineer (PE) license required; registration in Washington, DC, Maryland, and Virginia preferred.\nMinimum 10 years of progressive experience in mechanical engineering design and project delivery.\nStrong expertise in HVAC systems design, load calculations, equipment selection, and mechanical system analysis.\nExperience preparing engineering calculations, specifications, technical reports, and construction documents.\nKnowledge of plumbing and fire protection system design and coordination.\nExperience with commercial, institutional, transit, transportation, rail, aviation, or other public infrastructure projects.\nFamiliarity with transit station, underground facility, and tunnel ventilation design is highly desirable.\nWorking knowledge of applicable building codes, mechanical codes, NFPA standards, and industry best practices, including NFPA 130.\nProficiency with Revit MEP, AutoCAD, and industry-standard HVAC design software.\nStrong project management, communication, leadership, and client-facing skills.\nDemonstrated ability to mentor technical staff and lead multidisciplinary design teams.\nExperience with sustainable and energy-efficient building system design is preferred.\nThe salary range for this role is $140,000 to $180,000. Actual compensation will be determined based on a variety of factors, including but not limited to the candidate's skill set, experience, certifications, and geographic location. Compensation may vary by location due to differences in the cost of labor.\nIn addition to competitive pay, we offer a comprehensive benefits package for all full-time employees, including health insurance, vacation time, and 401(k) retirement benefits.","description_format":"text","description_chars":4512,"description_truncated":false,"requirements":{"experience_years_min":10,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Civil & Structural Engineering","Architecture","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-14T08:48:56Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 11 · green card filings: 4","filings_12m":11,"filings_prev_12m":14,"green_card_filings_12m":4,"median_offered_wage_usd":100500,"route":null,"cap_exempt":false,"checked_at":"2026-11-07T07:57:00+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0},{"country":"CA","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Positions approved through LMIA in 12 months: 1","filings_12m":1,"filings_prev_12m":8,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"High Wage","cap_exempt":false,"checked_at":"2026-11-07T07:57:00+00:00","sources":["ESDC: employers issued a positive LMIA"],"filings_for_role_12m":0}],"liveness":{"score":36,"band":"fade","label":"Fading","p_open":1,"p_active":0.503,"p_room":0.72,"age_days":74,"expected_fill_days":112,"reasons":["conf:9","evergreen","win:mid","crowd:brand"],"computed_at":"2026-11-08T05:47:12Z"},"pay":{"stated_usd_annual":180000,"is_top_pay":true},"html_url":"https://alion.io/job/exp-senior-mechanical-engineer-12","json_url":"https://alion.io/job/exp-senior-mechanical-engineer-12.json","meta":{"generated_at":"2026-11-08T10:28:50Z","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":22590,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"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":1879430},"rest":"https://alion.io/mcp/rest/get_company?id=1879430"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fexp-senior-mechanical-engineer-12"},{"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%2Fexp-senior-mechanical-engineer-12"},{"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%2Fexp-senior-mechanical-engineer-12"},{"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/exp-senior-mechanical-engineer-12\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fexp-senior-mechanical-engineer-12"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2510845}},{"tool":"search_jobs","arguments":{"company":"exp.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2510845},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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