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Commissioning EngineerAbout Vertical Mechanical Group (VMG)Vertical Mechanical Group (VMG) is a leading mechanical contractor specializing in commercial HVAC, Plumbing, Piping, Controls, and Mechanical Construction. Originally formed through Anderson Mechanical Services, Inc. and Inspiration Plumbing Company, VMG brings decades of industry experience together with a forward-thinking approach to delivering high-quality mechanical solutions.As we continue to grow, we are looking for a detail-oriented and technically strong Commissioning Engineer to join our Commissioning team. Reporting to the Commissioning Manager, this role plays a critical part in ensuring VMG's mechanical and plumbing systems are properly installed, tested, documented, and fully operational before final third-party commissioning.This position is ideal for someone with a strong understanding of HVAC, plumbing, controls, and system operations who enjoys troubleshooting complex systems and collaborating with project teams to ensure successful project delivery.What You'll DoSupport the Commissioning ProcessSupport commissioning activities for commercial HVAC, plumbing, controls, and mechanical systemsVerify systems and equipment are installed and operating according to project drawings, specifications, approved submittals, and sequences of operationPrepare systems for testing and verification prior to third-party Commissioning Agent inspectionsCoordinate functional performance testing and other commissioning activitiesTrack commissioning progress, outstanding items, deficiencies, and corrective actionsSupport projects throughout startup, testing, commissioning, and final acceptanceTest & Verify System PerformancePerform and coordinate equipment startup, testing, and system verification activitiesReview system operation to confirm equipment performs according to design requirementsAssist with functional testing of HVAC, plumbing, mechanical, and control systemsEvaluate system performance and identify operational or installation deficienciesVerify equipment settings, sequences, alarms, safeties, and control functionalityUtilize diagnostic tools and testing equipment to evaluate system performanceTroubleshoot & Resolve IssuesIdentify commissioning deficiencies and work with project teams to determine appropriate corrective actionsTroubleshoot mechanical, plumbing, and control system performance issuesReview sequences of operation and verify systems are functioning as intendedCoordinate with Project Managers, field teams, Controls Technicians, subcontractors, vendors, and equipment manufacturers to resolve issuesTrack deficiencies through completion and verify corrective workHelp identify potential system issues before formal third-party commissioningCoordinate Across Project TeamsWork closely with Project Managers, Superintendents, field personnel, Controls teams, and other project stakeholdersCoordinate directly with third-party Commissioning Agents throughout the commissioning processParticipate in commissioning meetings, project coordination meetings, and system reviewsCommunicate testing requirements, deficiencies, and project status clearly to internal and external teamsCoordinate with other contractors and trades when system performance depends on multiple scopes of workSupport successful turnover from construction through final commissioning and owner acceptanceManage Commissioning DocumentationReview mechanical drawings, specifications, submittals, sequences of operation, and control documentationMaintain accurate commissioning logs, testing records, deficiency lists, and project documentationDocument equipment startup and functional testing resultsAssist with commissioning reports and closeout documentationTrack required documentation and ensure commissioning deliverables are completed on scheduleWhat You BringBachelor's degree in Mechanical Engineering, HVAC, Construction Management, or a related field4+ years of experience with MEP systems commissioning, testing, startup, controls, or a related fieldStrong understanding of commercial HVAC and plumbing systemsUnderstanding of Building Automation Systems (BAS), HVAC controls, and sequences of operationExperience with system startup, testing, troubleshooting, and performance verificationAbility to read and interpret mechanical drawings, specifications, submittals, and technical documentationStrong understanding of system operations and controlsFamiliarity with diagnostic tools and testing equipmentStrong analytical and problem-solving skillsExcellent organization, documentation, and communication skillsAbility to manage multiple projects, priorities, and deadlinesAbility to travel to project locations throughout the DMV region as requiredPreferred ExperienceCommissioning certification such as BCxP, CxA, CxT, CCP, or similarExperience commissioning large-scale commercial mechanical systemsExperience with Building Automation Systems (BAS) and controlsExperience with functional performance testing and equipment startupFamiliarity with hydronic systems, pumps, air-handling equipment, central plants, and related commercial HVAC equipmentExperience coordinating directly with third-party Commissioning AgentsPrevious experience working for a commercial mechanical contractorWhat We OfferCompetitive compensation based on experienceMedical, dental, and vision insurance401(k) with company matchPaid time off and company holidaysOngoing technical training and professional development opportunitiesOpportunities for continued career advancementExposure to complex commercial mechanical and building systemsThe opportunity to work alongside experienced Project Management, Controls, Commissioning, and field teamsA collaborative, team-oriented environment where your technical expertise makes an impactWhy VMG?At VMG, commissioning is an important part of delivering the quality and performance our customers expect. Our Commissioning team works across projects to ensure complex mechanical systems aren't simply installed, but are tested, verified, and operating as designed before final turnover.As a Commissioning Engineer, you'll have the opportunity to work directly with Project Managers, field teams, Controls professionals, third-party Commissioning Agents, and other project partners while developing deep technical expertise across a variety of commercial building systems.If you're a technically minded professional who enjoys troubleshooting systems, solving problems, and ensuring complex mechanical equipment performs as intended, we'd like to hear from you.Apply today and continue building your career with VMG.VMG is an Equal Opportunity Employer.