Installations Commissioning Engineer (HVAC / Boiler Systems) Mount Vernon, NY - Field work across NYC & Westchester Full-time, In-person $110,000-$140,000 base plus incentive compensation About the Role A licensed Master Plumber and General Contractor serving NYC & Westchester, is hiring a Commissioning Engineer to plan, execute, and own the startup and commissioning of their mechanical installations. You'll take each installed heating and cooling plant from pre-startup readiness through first fire, functional testing, and verified operation, then document the finished system and hand a fully commissioned plant to the owner and the service team. This is a hands-on role. You will be in the mechanical room operating equipment, taking readings, running combustion tests, and verifying control circuits, not directing the work from a desk. What You'll Do Build the commissioning plan for each installed system during technical review, including functional tests, KPIs, and required data Review schematics and the Sequence of Operations for HVAC, steam, hydronic, and domestic hot water systems; raise RFIs before installation Walk installations to confirm hardware, sensors, and wiring are complete and ready for startup Own the go/no-go call on startup readiness and manage the punch list until the site is ready Energize and start boilers, pumps, and controls; confirm proper operation of all inputs and outputs Run combustion analysis on a calibrated analyzer and record O2, CO, stack temperature, and combustion efficiency Verify safeties and interlocks, including LWCO, high-limit, gas pressure switches, flame safeguard, and proof-of-closure Troubleshoot line and low-voltage control circuits and set up test instrumentation for the commissioning phase Prove system sequencing, staging, and controls, including the company's proprietary building automation platform, perform per design Produce Commissioning Reports and Boiler Room Settings documentation for the owner and service team

What You'll Bring Required:

Bachelor's degree in Mechanical Engineering preferred, or equivalent hands-on heating systems experience 4+ years of hands-on experience with commercial boilers, burners, pumps, and controls Working knowledge of NYC steam and hydronic heating systems Comfortable working hands-on in an active mechanical room Ability to read mechanical schematics, wiring diagrams, and a written Sequence of Operations Strong written communication skills Valid driver's license and ability to travel to job sites across NYC and Westchester

OSHA SST

certification

Preferred:

3+ years of startup and commissioning experience on boiler or heating-plant installations Understanding of combustion analysis and optimization Familiarity with building automation systems (BAS) and remote-monitoring platforms Knowledge of LL87 and LL97 retro-commissioning and reporting requirements Why This Role Join a licensed Master Plumber and General Contractor with in-house installation and service crews. You commission real systems you helped bring online, not paper studies.

Full toolkit under one roof:

oil-to-gas conversions, CHP, boiler installations, repipes, heating controls, and 24/7 emergency service across NYC and Westchester. A proprietary building automation platform gives you remote monitoring and live performance data to verify operation and back up your commissioning results. The company has grown from 20 to over 100 employees with a deep and growing book of installation work. This role is built to grow with the division. Compensation & Benefits Base salary $110,000-$140,000, commensurate with experience, plus incentive compensation 401(k) with company match Health, dental, and vision insurance HSA and FSA Life insurance Paid time off and parental leave About the Company Our client is a NYC & Westchester licensed Master Plumber and General Contractor providing oil-to-gas conversions, combined heat and power (CHP) systems, boiler installations, building repipes, heating controls, boiler monitoring, energy supply, and energy efficiency retrofits to residential and commercial buildings. Our client is an Equal Opportunity Employer. cob2