We're excited to connect with candidates in Chicago; however, this role is based in Atlanta, GA or San Jose, CA. The position offers opportunities for travel and relocation, and we're seeking candidates who are open to this flexibility. Please note that the role is not based in Chicago. Monthly per diem and mobilization is on offer. Lead the Systems That Keep Critical Infrastructure Running We are seeking a Senior Mechanical Project Engineer who brings deep technical expertise, field leadership, and the ability to drive outcomes in high-performance environments. Why This Role Stands Out This is not a documentation-driven role. This is a position for someone who: • Owns system performance from design through execution • Understands how complex mechanical systems operate as a whole • Can identify and solve issues before they impact operations You will work on large-scale, mission-critical data center projects where performance, reliability, and precision are non-negotiable. What You will Do Project Leadership & Execution • Lead commissioning activities across the full lifecycle • Execute functional testing, witness testing, and system validation • Manage assignments within schedule, budget, and quality expectations Technical Expertise & Problem Solving • Evaluate HVAC, chillers, boilers, pumps, and automation systems • Troubleshoot system performance issues • Review design documentation Client Engagement • Lead meetings and communicate findings • Build relationships with clients and contractors Operational Contributions • Complete reports and manage time and expenses Team Development • Mentor junior engineers and support training What You Bring Core Qualifications • Degree in HVACR, Mechanical, Electrical Engineering or related field • 7+ years experience or 3+ years commissioning • Data center experience required Technical Capabilities • Experience with HVAC, controls, automation, fire safety systems • Ability to read construction documents Professional Skills • Strong communication and problem-solving skills Physical Requirements • Ability to work in field environments and lift 30 lbs Preferred • EIT, CEM, OSHA 30, BIM experience Travel Requirements Travel to project sites as needed based on project demands. Important Notes No visa sponsorship available. Candidates must be authorized to work in the United States. Salary range: $130,000 to $150,000