Mechanical Engineer

ROI Agency • Irvine, CA

1d • $120,000 - $170,000 • Remote

About The Position

Seeking an experienced Mechanical Engineer to serve as a subject matter expert for mission-critical mechanical systems in data centers and other high-availability facilities. The role is responsible for HVAC, cooling infrastructure, heat rejection systems, controls integration, and mechanical resiliency strategies, developing innovative, energy-efficient, and maintainable solutions that meet industry standards and client performance objectives.

This is a remote position with anticipated travel of 10%–25% for project site visits during construction administration and site surveys for existing facilities. Approved business travel expenses are reimbursed under company travel policies. Candidates interested in office-based or hybrid arrangements may discuss available options. The salary range is $120,000–$170,000 annually.

The Mechanical Engineer leads design across project phases, from feasibility through construction administration, and provides technical oversight, coordination, quality reviews, commissioning support, and mentorship. The work includes cooling systems such as chilled-water plants, DX systems, and liquid cooling solutions, along with mechanical reliability, maintainability, energy efficiency, and resiliency considerations.

Requirements

• 5–10 years of mechanical design experience in mission-critical environments.
• Bachelor’s degree in Mechanical Engineering.
• Strong understanding of ASHRAE, NFPA, IMC, and local building code requirements.
• Excellent communication, technical leadership, and client-facing skills.

Nice To Haves

• Experience with hyperscale, colocation, enterprise, healthcare, or other high-availability facilities.
• Familiarity with liquid cooling technologies, including direct-to-chip and immersion cooling applications.
• Experience with central utility plants ranging from 3 MW to 100+ MW campuses.
• Knowledge of ASHRAE TC 9.9 thermal guidelines, energy efficiency strategies, water usage effectiveness (WUE), and power usage effectiveness (PUE) considerations.
• Experience supporting commissioning, integrated systems testing (IST), and operational readiness reviews.
• Professional Engineer (PE) license or actively pursuing licensure.
• LEED Accredited Professional and/or Certified Energy Manager (CEM).

Responsibilities

• Serve as the lead mechanical subject matter expert for mission-critical and data center projects.
• Develop cooling system concepts, including air-cooled and water-cooled chilled-water plants, direct expansion (DX) systems, and liquid cooling solutions.
• Lead mechanical design through feasibility, concept, schematic, design development, construction documents, and construction administration phases.
• Perform and oversee cooling load analysis, equipment selection, and redundancy evaluations.
• Develop mechanical resiliency strategies for N, N+1, 2N, and concurrently maintainable designs.
• Coordinate with electrical, controls, plumbing, structural, telecommunications, and architectural disciplines.
• Provide technical oversight of vendor equipment, including chillers, cooling towers, CRAHs, AHUs, fan walls, CDU systems, pumps, and BAS controls.
• Support utility capacity assessments and campus master planning efforts.
• Lead technical reviews and QA/QC processes, and support commissioning activities.
• Mentor junior mechanical engineers and support technical staff development.

Benefits

• Four medical plan options through UnitedHealthcare, including PPO and High-Deductible Health Plans; two Kaiser plan options are available in California only.
• Health Savings Account (HSA) or Flexible Spending Account (FSA), depending on medical plan selection.
• Two Delta Dental plan options.
• Vision coverage through EyeMed.
• Employee Assistance Program (EAP).
• 401(k) retirement plan with up to 4.5% in total employer contributions, subject to eligibility and plan conditions.
• Student loan payment matching through employer retirement contributions for eligible payments.
• Company-paid life and AD&D insurance, with basic coverage equal to one times annual salary up to $250,000.
• Company-paid short-term and long-term disability insurance.
• Paid time off (PTO).
• Parental leave.
• Optional supplemental life insurance and additional long-term disability insurance.
• Optional accident, critical illness, and hospital indemnity insurance through MetLife.
• Optional legal services through LegalShield.
• Optional identity theft protection through LifeLock.
• Periodic opportunities to purchase company shares directly.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level