{"id":2391193,"url":"https://alion.io/job/fsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services","title":"Senior Mechanical Commissioning Project Engineer-Data Center Construction - FST Technical Services","company":{"id":4419698,"name":"FST Technical Services","domain":"fsttechnical.com","url":"https://alion.io/company/fsttechnical","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JazzHR","truth_index":null},"role":"Operations","role_family":"Operations","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Chicago, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130000,"max":150000,"currency":"USD","period":"year","gross":null,"usd_annual":150000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-12T21:16:11Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-22T08:12:10Z","board_verified":true,"closed_at":null,"days_open":9,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":9},"description":"We’re excited to connect with candidates in Chicago; however, this role is based in Atlanta, GA or San Jose, CA. The position offers opportunities for travel and relocation, and we’re seeking candidates who are open to this flexibility. Please note that the role is not based in Chicago. Monthly per diem and mobilization is on offer.\nLead the Systems That Keep Critical Infrastructure Running\nAt FST Technical Services, we ensure the most complex facilities operate exactly as intended. Our Commissioning division partners with clients across data centers and mission-critical environments to validate that systems are designed, installed, and performing at the highest level.\nWe are seeking a Senior Mechanical Project Engineer who brings deep technical expertise, field leadership, and the ability to drive outcomes in high-performance environments.\nWhy This Role Stands Out\nThis is not a documentation-driven role.\nThis is a position for someone who:\nOwns system performance from design through execution \nUnderstands how complex mechanical systems operate as a whole \nCan identify and solve issues before they impact operations \nYou will work on large-scale, mission-critical data center projects where performance, reliability, and precision are non-negotiable.\nWhat You will Do\nProject Leadership & Execution\nLead commissioning activities across the full lifecycle\nExecute functional testing, witness testing, and system validation\nManage assignments within schedule, budget, and quality expectations\nTechnical Expertise & Problem Solving\nEvaluate HVAC, chillers, boilers, pumps, and automation systems\nTroubleshoot system performance issues\nReview design documentation\nClient Engagement\nLead meetings and communicate findings\nBuild relationships with clients and contractors\nOperational Contributions\nComplete reports and manage time and expenses\nTeam Development\nMentor junior engineers and support training\nWhat You Bring\nCore Qualifications\nDegree in HVACR, Mechanical, Electrical Engineering or related field\n7+ years experience or 3+ years commissioning\nData center experience required\n\nTechnical Capabilities\nExperience with HVAC, controls, automation, fire safety systems\nAbility to read construction documents\nProfessional Skills\nStrong communication and problem-solving skills\nPhysical Requirements\nAbility to work in field environments and lift 30 lbs\nPreferred\nEIT, CEM, OSHA 30, BIM experience\nTravel Requirements\nTravel to project sites as needed based on project demands.\nWhy FST\nAt FST, we value execution, accountability, and expertise. Engineers have opportunities to gain experience into leadership roles and work on complex, high-impact projects.\nImportant Notes\nNo visa sponsorship available. Candidates must be authorized to work in the United States.\nSalary range: $130,000 to $150,000FST Technical does not offer employment-based visa sponsorship for this position. Applicants must be legally authorized to work in the United States without the need for employer sponsorship now or in the future.","description_format":"text","description_chars":3027,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-12T21:16:11Z"}],"visa":[],"liveness":{"score":42,"band":"fade","label":"Fading","p_open":1,"p_active":0.721,"p_room":0.578,"age_days":9,"expected_fill_days":8,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-22T06:10:10Z"},"pay":{"stated_usd_annual":150000,"is_top_pay":true},"html_url":"https://alion.io/job/fsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services","json_url":"https://alion.io/job/fsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services.json","meta":{"generated_at":"2026-10-22T10:55:47Z","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":8455,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"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":4419698},"rest":"https://alion.io/mcp/rest/get_company?id=4419698"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services"},{"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%2Ffsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services"},{"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%2Ffsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services"},{"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/fsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffsttechnical-senior-mechanical-commissioning-project-engineer-data-center-construction-fst-technical-services"}]}