On-Site Mechanical Engineer: HVAC & Critical Systems Lead

Jacobs; San Diego (CA); On-site; USD 95,000 - 131,000; Full time

Benefits offered by this job

401(k) plan

Stock purchase plan

Unlimited PPTO

Job summary

Jacobs is seeking an On-Site Mechanical Engineer for a project near Baton Rouge, LA. The role acts as the field representative for mechanical systems, coordinating between construction and design teams to ensure installation quality and successful delivery of critical infrastructure.

The candidate will oversee HVAC, cooling, piping, and other systems, perform daily site observations, and drive issue resolution, RFI responses, and field coordination.

Qualifications

• 10+ years of mechanical design, construction, commissioning, or operations experience.
• Or 5+ years in hyperscale data center environments.
• Experience with chilled water systems, cooling plants, CRAH/CRAC systems, piping, and mission-critical environments.
• Strong understanding of specifications, codes, and industry standards.
• Ability to evaluate field conditions and provide practical solutions.
• Excellent communication and coordination skills.

Responsibilities

• Serve as the primary on-site representative for HVAC, cooling, piping, plumbing, and other mechanical systems.
• Perform daily site observations and assess installation progress and workmanship.
• Coordinate mechanical design clarifications and field solutions with project stakeholders.
• Facilitate responses to RFIs, submittals, equipment substitutions, and field conflicts.
• Support reviews of equipment layouts, utility routing, and coordination between trades.
• Participate in constructability reviews, BIM coordination activities, and mockup evaluations.
• Identify and document mechanical installation deficiencies and opportunities for improvement.
• Support factory testing, bench testing, startup activities, and commissioning preparation.
• Coordinate with QA/QC and commissioning teams to resolve installation issues.
• Attend project meetings and provide technical guidance on mechanical systems.
• Issue weekly reports summarizing observations, risks, corrective actions, and schedule impacts.
• Proactively identify design, quality, and schedule risks and support resolution strategies.

Skills

Mechanical design experience

Hyperscale data center experience

Strong communication

Coordination skills

Education

Bachelor's degree in Mechanical Engineering or related discipline

Job description

Jacobs is seeking an On-Site Mechanical Engineer for a project near Baton Rouge, LA. The role acts as the field representative for mechanical systems, coordinating between construction and design teams to ensure installation quality and successful delivery of critical infrastructure.

The candidate will oversee HVAC, cooling, piping, and other systems, perform daily site observations, and drive issue resolution, RFI responses, and field coordination.