<p style="margin: 0px;"><span style="font-family: helvetica, arial, sans-serif; font-size: 10pt; color: rgb(0, 0, 0);"><strong>About You: </strong></span></p> <p style="margin: 0in;"><span style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="color: black;">Do you have an entrepreneurial spirit and a passion for engineering? Do you love designing </span><em><span style="color: black;">and</span></em><span style="color: black;"> implementing complex electrical 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.</span></span></p> <p style="margin: 0in;"> </p> <p style="margin: 0px;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">ARCO/Murray Engineering is seeking a Senior 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.</span></p> <p style="margin: 0px;"> </p> <p style="margin: 0px;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">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.</span></p> <p style="margin: 0px;"> </p> <p style="margin: 0px;"><span style="font-family: helvetica, arial, sans-serif; font-size: 10pt; color: rgb(0, 0, 0);"><strong>A Day in the Life: </strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Lead the mechanical design process for mission-critical data centers, including chilled water systems, DX systems, CRAH/CRAC, heat rejection, and white-space cooling.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Guide system development from early concept and basis-of-design through construction documentation, commissioning, and turnover.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Apply ASHRAE TC 9.9 guidance and critical environment standards to ensure reliability and efficiency.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Perform cooling load calculations, CFD coordination, and mechanical equipment sizing.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Coordinate with electrical, controls, and architectural teams to ensure system integration supporting N, N+1, and 2N redundancy.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Generate design and construction documents using Revit and AutoCAD.</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Support construction by reviewing RFIs, submittals, and field conditions.</span></li> </ul> <p style="margin: 0px;"><span style="font-family: helvetica, arial, sans-serif; font-size: 10pt; color: rgb(0, 0, 0);"><strong>Necessary Qualifications: </strong></span></p> <ul> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">7–20 years of mechanical engineering experience with data centers or mission-critical systems</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Bachelor’s degree in Mechanical Engineering, Architectural Engineering, or related field</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Proficiency with Revit and AutoCAD</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Strong understanding of critical cooling systems and redundancy strategies</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Ability to manage multiple fast-paced projects</span></li> <li style="font-family: helvetica, arial, sans-serif; font-size: 10pt;"><span style="font-size: 10pt; font-family: helvetica, arial, sans-serif;">Experience in design/build is a plus<