Lead Data Center Mechanical Engineer - Mission Critical

ARCO Companies; Chicago (IL); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

ESOP

Traditional and Roth 401k

Tuition reimbursement

Scholarship for associates’ children

Sabbatical and travel allowance

Volunteer leave

Medical, dental, and vision insurance

Paid parental leave

Job summary

ARCO/Murray Engineering is seeking a Senior Mechanical Engineer to lead the full mechanical scope for data center projects in Downers Grove, IL. You will guide cooling systems development, sizing, and documentation, coordinating with electrical and controls teams to ensure N, N+1, and 2N reliability.

Join a design/build group focused on reliable, scalable data center infrastructure, mentoring teams and delivering high-availability environments with ASHRAE guidance.

Qualifications

• 7–20 years of mechanical engineering experience with data centers or mission-critical systems.
• Bachelor’s degree in Mechanical Engineering, Architectural Engineering, or related field.
• Proficiency with Revit and AutoCAD.
• Strong understanding of critical cooling systems and redundancy strategies.
• Ability to manage multiple fast-paced projects.
• Experience in design/build is a plus.
• Willingness to travel to project sites as required (e.g., 10-30%).
• Familiarity with engineering deliverables in a GC setting (i.e., design-build or EPC support) is a plus.

Responsibilities

• Lead the mechanical design process for mission-critical data centers, including chilled water systems, DX systems, CRAH/CRAC, heat rejection, and white-space cooling.
• Guide system development from early concept and basis-of-design through construction documentation, commissioning, and turnover.
• Apply ASHRAE TC 9.9 guidance and critical environment standards to ensure reliability and efficiency.
• Perform cooling load calculations, CFD coordination, and mechanical equipment sizing.
• Coordinate with electrical, controls, and architectural teams to ensure system integration supporting N, N+1, and 2N redundancy.
• Generate design and construction documents using Revit and AutoCAD.
• Support construction by reviewing RFIs, submittals, and field conditions.

Skills

Data center experience

Project management

Travel flexibility

GC experience

Education

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Architectural Engineering

Related field

Tools

Revit

AutoCAD

Job description

ARCO/Murray Engineering is seeking a Senior Mechanical Engineer to lead the full mechanical scope for data center projects in Downers Grove, IL. You will guide cooling systems development, sizing, and documentation, coordinating with electrical and controls teams to ensure N, N+1, and 2N reliability.

Join a design/build group focused on reliable, scalable data center infrastructure, mentoring teams and delivering high-availability environments with ASHRAE guidance.