Senior Mechanical Commissioning Project Engineer

Senior Mechanical Commissioning Project Engineer

FST Technical Services

Phoenix, AZ • On-site

Full-time

Posted 26 days ago


Job description

We’re excited to connect with candidates in Phoenix, AZ; 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 Phoenix. Monthly per diem and mobilization is on offer.
Lead the Systems That Keep Critical Infrastructure Running 

At FST Technical Services, we ensure the most complex facilities operate exactly as intended. Our Commissioning division partners with clients across data centers and mission-critical environments to validate that systems are designed, installed, and performing at the highest level. 
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. 

Why FST 

At FST, we value execution, accountability, and expertise. Engineers have opportunities to gain experience into leadership roles and work on complex, high-impact projects. 

Important Notes 

No visa sponsorship available. Candidates must be authorized to work in the United States. 

Salary range: $130,000 to $150,000
FST Technical does not offer employment-based visa sponsorship for this position. Applicants must be legally authorized to work in the United States without the need for employer sponsorship now or in the future.

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Frequently asked questions

Q: What skills or qualities help someone succeed as a Senior Mechanical Project Engineer?

A: To succeed as a Senior Mechanical Project Engineer, key technical skills include proficiency in computer-aided design (CAD) software, knowledge of mechanical engineering principles, and experience with project management tools such as project management information systems (PMIS) and enterprise resource planning (ERP) systems. Soft skills that contribute to success in this role include strong communication and leadership abilities, as well as the capacity to collaborate effectively with cross-functional teams and stakeholders. By combining these technical and soft skills, Senior Mechanical Project Engineers can effectively manage complex projects, drive innovation, and advance their careers through leadership opportunities and professional development.

Q: What is the career path for a Senior Mechanical Project Engineer?

A: A Senior Mechanical Project Engineer typically follows a career progression from entry-level roles such as Mechanical Engineer or Design Engineer, to mid-level positions like Project Engineer or Lead Engineer, and eventually to senior roles like Senior Mechanical Project Engineer or Engineering Manager. Key opportunities for skill development and professional growth in this role include project management, leadership, and technical expertise, as well as the ability to collaborate with cross-functional teams and stakeholders. Long-term career prospects for a Senior Mechanical Project Engineer may include transitioning into executive roles, such as Director of Engineering or Vice President of Operations, or pursuing specialized fields like engineering consulting or academia.



FST Technical Services job posting for a Senior Mechanical Commissioning Project Engineer in Phoenix, AZ with a salary of $130,000 to $150,000 Annually with a map of Phoenix location.