Senior Data Center Commissioning Specialist - Mechanical Role Overview We are seeking an experienced, rigorous, and traveled Senior Data Center Commissioning Specialist - Mechanical to lead on-site commissioning activities for state-of-the-art data center facilities. In this role, you will spearhead all mechanical commissioning operations—spanning equipment start-ups, QA/QC validations, and rigorous Level 4 (L4) and Level 5 (L5) functional performance testing—while overseeing and supporting contractor L0-L3 construction checkouts. This is a critical, highly mobile engineering role for a commissioning expert who excels at client collaboration and operational performance optimization. You will interface directly with project owners, contractors, and stakeholders to ensure every mechanical, plumbing, life safety, and building automation system operates at peak safety, efficiency, and design intent. If you possess deep expertise in mission-critical mechanical commissioning, we want to hear from you. Key Responsibilities Commissioning Execution & Testing Leadership

• L4 & L5

Testing Leadership:

Lead, execute, and document advanced Level 4 (Component/System Functional Testing) and Level 5 (Integrated Systems / Operational Readiness Testing) mechanical commissioning activities.

• L0-L3

Oversight:

Oversee, inspect, and support contractor-driven L0 through L3 activities, ensuring robust quality control, component verification, and pre-functional checkouts.

• Equipment Start-Up:

  Direct and monitor the safe start-up, calibration, and integration of complex mechanical plant equipment (e.g., HVAC units, chillers, air handlers, pumps, piping, and building automation controls).

• Deficiency Tracking:

  Identify, document, and track commissioning issues and punch-list items through to complete resolution, ensuring seamless handover to operations teams. Stakeholder Collaboration & Compliance

• Client & Contractor Interface:

  Act as the primary technical representative interfacing with company clients, project stakeholders, and trade contractors to drive optimal facility outcomes.

• Code & Standard Adherence:

  Ensure all mechanical installations and test procedures strictly comply with ASHRAE guidelines, NFPA codes, TAB (Test, Adjust, and Balance) requirements, and local regulations.

• Documentation & Reporting:

  Prepare accurate commissioning scripts, logs, and final turnover reports documenting system performance against owner project requirements (OPR). Qualifications & Requirements Minimum Qualifications

• Education:

  Bachelor's degree in Mechanical Engineering, Building Sciences, or a related discipline (or equivalent combination of education and progressive field experience).

•

Experience Baseline:

oMinimum of 10+ years of progressive professional experience as a mechanical commissioning specialist across utility infrastructure, life safety, mechanical, plumbing, and building automation systems. o Minimum of 2-3 years of focused, hands-on experience documenting L2/L3 construction activities and leading L4/L5 functional testing specifically within Data Center environments.

• Technical Mastery:

  o Working knowledge of ASHRAE standards, NFPA codes, and TAB mechanical testing requirements. oSolid understanding of the commercial/mission-critical construction lifecycle.

• Regulatory & Mobility Requirements:

  oU.S. Citizenship is strictly required for clearance and facility access. oMust be able to successfully clear a comprehensive background check. oAbility to travel up to 95% to active data center job sites nationwide.

• Core Competencies:

  Exceptional communication, problem-solving, and leadership skills; ability to manage complex site dynamics and drive consensus among multidisciplinary teams. Preferred Attributes
• Industry-recognized commissioning certifications (e.g., BCxA, CxA, or equivalent).
• Specialized certifications: IR Thermography Level 1 or Level 2, NFPA 70E certification, or OSHA 30-Hour Construction certification.
• Prior hands-on experience utilizing infrared thermography for electrical and mechanical asset diagnostics in mission-critical facilities.

Equal Opportunity Employer / Disabled / Protected Veterans The Know Your Rights poster is available here: https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf The pay transparency policy is available here: https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required. We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team. AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.

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//e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.