Mechanical Cx Specialist (Dry Mechanical)

OnQCx; Town of Texas (WI); On-site; USD 80,000 - 100,000; Full time

Benefits offered by this job

Competitive pay and benefits

Long-term career potential

High-performing team environment

Job summary

OnQCx is inviting applications for the Mechanical Commissioning Specialist (Dry Mechanical) position, based in Wisconsin. This role focuses on commissioning, startup, and testing of critical dry mechanical and HVAC systems in a hyperscale data center facility.

The ideal candidate should have over 5 years of commissioning experience, particularly in data center, semiconductor, and manufacturing sectors. Join our high-performing team to work on mission-critical projects that emphasize integrity, professionalism, and excellence.

Qualifications

• 5+ years of experience in commissioning or mechanical systems support.
• Strong understanding of HVAC systems and cleanroom environments.
• Ability to read and interpret mechanical drawings and MEP construction documents.

Responsibilities

• Execute commissioning activities for dry mechanical systems and HVAC equipment.
• Perform functional performance testing to verify systems operate as designed.
• Coordinate startup activities with contractors and vendors.

Skills

Commissioning experience

HVAC systems

Troubleshooting

Documentation

Communication

Job description

Here at OnQCx, our team members are consummate professionals who are well respected by our Fortune 100 clients in the semiconductor/cleanroom, manufacturing, and mission‑critical industries. Our mission is to do the very best for our clients and customers with integrity, professionalism, and altruism, allowing them to be the very best in their business globally.

Are you ready to be a part of a dynamic team that values excellence, integrity, and collaboration? Our dedicated team believes in honesty, integrity, performance, partnership, and trust, ensuring long‑lasting customer and employee relationships built on solid principles. By upholding the highest standards of quality and performance, we aim to achieve total customer satisfaction in the various markets we serve.

Role Overview

We are seeking a Mechanical Commissioning Specialist (Dry Mechanical) to support commissioning, startup, testing, and turnover activities on a hyperscale data center facility. This role will focus on the verification, testing, and functional performance of critical dry mechanical and HVAC systems supporting cleanroom and manufacturing operations.

The ideal candidate will have hands‑on commissioning experience within data center, semiconductor, advanced manufacturing, pharmaceutical, or mission‑critical environments and possess a strong understanding of mechanical system startup, integrated testing, and turnover processes.

Key Responsibilities

• Execute commissioning activities for dry mechanical systems, HVAC equipment, air handling systems, exhaust systems, cleanroom support infrastructure, and associated controls.
• Perform pre‑functional and functional performance testing to verify systems operate in accordance with design intent.
• Coordinate startup activities with contractors, vendors, controls teams, and client stakeholders.
• Support integrated systems testing (IST) and turnover readiness activities.
• Document commissioning results, deficiencies, corrective actions, and retesting activities.
• Review commissioning procedures, startup plans, and test scripts to ensure project compliance.
• Support development and completion of turnover packages, system documentation, and O&M deliverables.
• Conduct field inspections and verification activities to confirm installations meet project specifications and quality requirements.
• Identify installation deficiencies and support resolution efforts prior to startup and testing.
• Verify equipment readiness, system completion, and documentation status before commissioning activities begin.
• Maintain accurate commissioning records and support client reporting requirements.

Requirements

• 5+ years of experience in commissioning, startup, field engineering, or mechanical systems support within data center, semiconductor, advanced manufacturing, pharmaceutical, or mission‑critical facilities.
• Strong understanding of HVAC systems, air handling equipment, cleanroom environments, exhaust systems, and mechanical controls.
• Experience supporting functional testing, startup, turnover, and integrated systems testing activities.
• Ability to read and interpret mechanical drawings, P&IDs, sequences of operation, and MEP construction documents.
• Strong troubleshooting, documentation, and communication skills.
• Ability to work effectively in fast‑paced construction and commissioning environments.

Preferred Qualifications

• Data center commissioning experience.
• Experience supporting large capital projects or manufacturing facilities.
• Familiarity with commissioning documentation platforms and quality management systems.
• Previous experience working alongside QA/QC, construction, and owner representative teams.

Why Join Us

OnQCx is a project management and engineering consulting firm that partners with top‑tier clients on some of the most complex mission‑critical projects worldwide. While we operate on a large scale, we maintain a family‑run, tight‑knit culture with a proactive focus on rolling our people onto new opportunities when projects wrap.

• Competitive pay and benefits package.
• Opportunity to work on a mission‑critical project with long‑term career potential.
• Be part of a tight‑knit, high‑performing team delivering world‑class facilities for leading technology clients.