Mechanical Engineer – On-Site Engineering (Gas & Nuclear Power Plant Construction) Plant Construction)

About the Role

Fermi America is hiring a senior Mechanical Engineer to support on-site execution for gas-fired power plant construction. This role is part of a small on-site engineering team responsible for reviewing designs, identifying improvements, ensuring what’s being built makes sense, and overseeing field progress.

This is not a desk-only design role—we need practical mechanical engineers with strong field experience who can troubleshoot real issues, challenge incorrect assumptions, and keep work moving safely and efficiently. Nuclear experience is a plus, but the top priority is deep mechanical construction experience.

Key Responsibilities

• Review mechanical designs for constructability, access,      installation sequencing, and maintainability
• Identify improvements and proactively resolve issues      before they impact schedule or rework
• Provide technical oversight in the field for:
  • piping installation, supports, valves, and system       tie-ins
  • equipment setting/alignment and vendor interfaces
  • balance-of-plant systems (water, air, fuel gas,       auxiliary systems)
• Coordinate with EPC/subcontractors on RFIs,      installation constraints, and change requests
• Support mechanical QA/QC and turnover readiness      (flushing, hydrotests, punch lists)
• Participate in walkdowns and readiness reviews to      ensure system completion supports commissioning
• Help drive accountability and ensure field execution      matches design intent and project requirements

 Qualifications

• Bachelor’s degree in Mechanical Engineering
• 10+ years of mechanical engineering experience supporting      industrial/power construction
• Strong ability to interpret P&IDs, isometrics,      vendor drawings, and installation specs
• Proven ability to work directly with contractors and      field teams to solve problems quickly
• Strong communication skills and ownership mindset

Preferred

• Gas-fired power plant or combined cycle experience
• Rotating equipment systems familiarity
• Nuclear experience (construction discipline, QA expectations, design review rigor)