Mechanical Commissioning Technician

Decima International•Allen, TX

4d•Onsite

About The Position

Decima International is seeking a Mechanical Commissioning Technician to support independent, third-party commissioning of mechanical systems on data center projects. Under the direction of a Commissioning Engineer, the technician performs, witnesses, and documents field inspections and tests to verify that equipment is installed correctly and operates as designed. The role requires hands-on mechanical commissioning experience, strong documentation skills, and safe collaboration with contractors and equipment vendors during inspections, functional testing, and Integrated Systems Testing. The position is based on project sites across the United States and requires 50–75% travel, including extended assignments of three weeks or more. Travel, lodging, and per diem are provided according to company policy. Site rotations are planned before each project and are typically two to three weeks onsite followed by one week offsite, subject to project requirements and delays. Work takes place in active construction and data center environments, including at heights and in mechanical and electrical rooms, as well as hot or noisy areas.

Requirements

At least 5 years of commissioning experience on mechanical systems.
2 to 3 years of experience on data center projects.
Working knowledge of chilled water, air handling, and heat rejection systems.
Ability to read and interpret mechanical drawings and piping and instrumentation diagrams (P&IDs).
Experience using test instruments such as flow meters, pressure gauges, thermal imagers, and data loggers.
Clear written and verbal communication skills and ability to maintain accurate field documentation.
OSHA 10 or OSHA 30 training, or ability to obtain it.
Valid driver’s license.
Authorization to work in the United States and ability to pass a background check and drug screen.
Ability to travel 50–75%, work extended site assignments, lift 50 lbs, and wear required personal protective equipment (PPE).

Nice To Haves

Experience with liquid cooling systems, including CDUs, secondary loops, and fluid flushing and filtration.
Familiarity with building management systems and commissioning tracking platforms.
Trade or technical certification, such as HVAC/R, pipefitting, or controls technician certification.
Experience supporting Integrated Systems Testing in a live-load or high-density data center.

Responsibilities

Inspect delivered and installed mechanical equipment—including chillers, heat rejection equipment, pumps, air handlers, CRAH units, CDUs, and piping—against approved drawings and submittals.
Perform and witness pre-functional and static checks, including equipment alignment and rotation, valve positions, piping flushing, pressure testing, and sensor and instrument verification.
Support equipment start-up and Level 4 functional performance testing, accurately recording readings, setpoints, and results.
Support Integrated Systems Testing, including failure scenarios, load testing, and shift coverage.
Document deficiencies with photographs and clear descriptions, and track corrective actions through closure with contractors.
Complete checklists, test scripts, and daily reports in the commissioning platform.
Follow site safety procedures, lockout/tagout requirements, and applicable permit requirements.
Maintain accurate and independent reporting in accordance with Decima’s conflict-of-interest and independence policy, without influence from contractors or equipment suppliers.