Mechanical Engineer Intern

We are looking for a Mechanical Engineer Intern to join our growing team in St. Louis (Richmond Heights). You will assist with the design and engineering of HVAC and mechanical systems from concept through construction. The ideal candidate is a proactive problem solver who thrives in a collaborative environment and brings both technical knowledge and a practical mindset to each project.

A DAY IN THE LIFE

At ARCO, we are committed to taking care of our greatest asset – our team. ARCO’s best-in-class benefits and superior compensation are what set us apart from the competition and continue to attract top industry talent. Competitive hourly rate (with overtime possible) Housing stipend (based on need) Internship hours count towards our ESOP eligibility End-of-term performance bonus based on merit Path to full time position Sign-on bonus for each term served if hired as a full-time associate following graduation Direct access to leaders Intern training program to learn real world skills 2 formal reviews during your Internship to enhance learning opportunities Traveling to jobsites

NECESSARY QUALIFICATIONS

Enrolled in Civil or Mechanical Bachelor’s degree program Minimum Grade Point Average of 3.0 out of 4.0 Previous Internship or Co-op construction experience preferred Excellent verbal and written communication skills and a strong work ethic

WHAT WE CAN OFFER YOU

At ARCO, we are committed to taking care of our greatest asset – our team. ARCO’s best-in-class benefits and superior compensation are what set us apart from the competition and continue to attract top industry talent. Competitive hourly rate (with overtime possible) Housing stipend (based on need) Internship hours count towards our ESOP eligibility End-of-term performance bonus based on merit Path to full time position Sign-on bonus for each term served if hired as a full-time associate following graduation Direct access to leaders Intern training program to learn real world skills 2 formal reviews during your Internship to enhance learning opportunities Traveling to jobsites

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

Message frequency may vary. Message and data rates may apply. For government reporting purposes, we ask candidates to respond to the below self-identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file. As set forth in ARCO National Holdings’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law. If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows: A \"disabled veteran\" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or #J-18808-Ljbffr ARCO National Holdings