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OVERWATCH

Lead Mechanical Commissioning Engineer

OVERWATCH

. Direct the commissioning sequence from factory acceptance testing (FAT/L1) through final Integrated Systems Testing (IST/L5) and turnover to Operations .

Posted 10/30/2026full-timeRemote • United StatesSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in mechanical commissioning processes, including factory acceptance testing, integrated systems testing, and performance validation. Proficient in managing mechanical systems such as chilled water, air handling, and advanced liquid cooling within mission-critical facilities.

Highest-signal resume keywords
Mechanical CommissioningIntegrated Systems TestingData Center Project ExperienceMechanical Engineering DegreePerformance Validation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Factory Acceptance TestingLevel 2 Documentation VerificationLevel 4 Functional Performance TestingTest Script AuthoringRoot Cause AnalysisMechanical Design ReviewMethod StatementsPre-Functional ChecklistsHeat-Load TestingControls and Automation
Soft Skills
LeadershipClient CommunicationTeam ManagementProblem SolvingCollaboration
Industry Keywords
HVACRConstruction ManagementHyperscale BuildsColocationMission-Critical Facilities

About the role

Key responsibilities & impact
  • Direct the commissioning sequence from factory acceptance testing (FAT/L1) through final Integrated Systems Testing (IST/L5) and turnover to Operations
  • Oversee Level 2 documentation verification, installation and construction-readiness checks, and Level 3 equipment startup and vendor validation
  • Lead Level 4 functional performance testing and sequence-of-operations validation
  • Design, coordinate, and command Level 5 pull-the-plug heat-load testing to validate redundancy, interlocks, failovers, and transient behaviors
  • Review mechanical design packages, P&IDs, sequence-of-operations narratives, control scripts, and engineering submittals
  • Author and approve test scripts, Method Statements (MOPs), and pre-functional checklists
  • Analyze root causes of mechanical failures and controls errors
  • Track and remediate mechanical deficiencies through the project issue log
  • Manage and prioritize assignments for internal commissioning engineers and third-party technicians
  • Serve as the primary mechanical point of contact for clients, general contractors, subcontractors, vendors, and controls engineers
  • Represent mechanical commissioning in schedule reviews, construction coordination meetings, and client-facing updates
  • Validate installation, tuning, and failure modes of chilled water, air handling, advanced liquid cooling, controls and automation, fuel oil, fire suppression, and plumbing systems

Requirements

What you’ll need
  • Bachelor’s degree in Mechanical Engineering, HVACR, Construction Management, or equivalent technical field experience
  • Minimum 3+ years of direct mechanical commissioning, engineering, or mission-critical facilities construction experience
  • Minimum 2+ years of dedicated data center project experience
  • Demonstrated experience leading L1–L5 programs on hyperscale, colocation, or enterprise builds
  • Ability to navigate construction sites, climb ladders, and lift up to 30 lbs.
  • Willingness and ability to travel 50% to 65% of the time

Benefits

Comp & perks
  • Health insurance
  • Dental insurance
  • Vision insurance
  • Life insurance
  • 401(k) retirement plan
  • Paid time off
  • Relocation assistance available