Mechanical Engineer, Data Centers

ARCO • Downers Grove, IL • 1h ago

About You:

Do you have an entrepreneurial spirit and a passion for engineering? Do you love designing and implementing complex mechanical systems? Are you looking for a company that is constantly trying to push the boundaries of what it means to offer a better construction solution process by using design/build? If the answer is, "Yes!" then we have an opportunity that will excite you. Who are we? We are ARCO, a Family of Construction Companies.

ARCO/Murray Engineering is seeking a Mechanical Engineer to join our Mission Critical Engineering team in Downers Grove, Illinois. In this role, you will lead the full mechanical scope for hyperscale, colocation, and enterprise data center projects, guiding the development of complex cooling and mechanical infrastructure systems essential to high-availability facilities.

You will join an established but rapidly growing design/build group focused on delivering reliable, scalable, and efficient data center solutions. Our team collaborates closely with internal construction partners, project managers, and commissioning teams-working together to deliver world-class mission-critical environments.

A Day in the Life:

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 support redundancy strategies.

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.

Necessary Qualifications:

3-5 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.

What We Can Offer You:

We are dedicated to the well-being of our associates and are proud to be consistently recognized as a Best Place to Work. Our compensation and benefits package not only supports our associates and their families but benefits local communities and communities around the world.

Industry-leading performance-based bonus program

Employee Stock Ownership Plan (ESOP)

Traditional and Roth 401k

Tuition reimbursement for associates

Scholarship for associates' children up to $28,000 per child

1-month paid sabbatical after every five years of employment, plus $5,000 for travel

1-week paid volunteer leave each year

100% charitable match

Medical, dental, and vision insurance coverage

Paid parental leave

Typical base compensation for the Senior Mechanical Engineer role is between $95,000 and $125,000. Candidates with extensive experience may exceed this range. In addition to base salary, the role is eligible to receive discretionary bonus compensation based on individual and company performance.

At ARCO, our first core value is to treat people fairly and do the right thing. We are committed to building and sustaining a culture that supports diversity and inclusion. We are proud to be an equal opportunity employer, and all qualified applicants will receive consideration for employment.

From recruiting, training, and hiring practices to selecting our subcontractors, we understand that diversity of all those involved in the construction process enhances our ability to deliver the best solutions to our customers. We hire the best and the brightest from across the country - constructing a team of experts in architecture, design, engineering, project management, and business services.

This represents typical base compensation for the role. Candidates with extensive experience may exceed this range. In addition to base salary, the role is eligible to receive discretionary bonus compensation based on individual and company performance.

Pay Range

$95,000-$125,000 USD

MAKE YOUR MOVE

We are proud to be one of the fastest-growing, privately-owned companies in America, celebrating over 30 years of experience as design-build experts. We have completed over 7,500 design-build projects nationwide. We ranked #9 on ENR's Design-Build Firms list and #34 on ENR's Top 400 Contractors list of 2026. Most importantly, our clients like us, trust us, and want to do business with us. We are looking for people with the same enthusiasm, passion, and respect for the hard work that brought us to where we are today. Are you a person who can make a difference at ARCO? If the answer is "Yes!" we look forward to meeting you.

ARCO does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies without pre-approval from ARCO's Human Resources team. Pre-approval is required before any external candidate can be submitted. ARCO will not be responsible for fees related to unsolicited resumes and for candidates who are sent directly to our hiring managers. Agencies must have a fully executed vendor agreement in place as well as written approval to submit candidates from an ARCO TA Manager for a specific position before submitting candidates.

LEGAL DISCLAIMER

EOE, including disability/vets

ARCO

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