Internships in St. Louis, Missouri, United States

The Mechanical Engineering Internship at McClure Engineering reports to a more experienced Engineer and involves performing energy and load calculations, airflow and pressure drop calculations, equipment sizing, system design and layout. Interns collaborate with mechanical and electrical Drafter/Designers on the production of construction documents, including drawings and specifications, and research commercially available equipment to select equipment appropriate for project and client needs.

The Hubbell Internship Program is a 10 to 12-week program providing students the opportunity to gain corporate experience, learn about all aspects of our business, and prepare students with the kind of experience needed to have a rewarding career at Hubbell. This intern will focus on supporting Quality Engineering initiatives through failure analysis, reliability testing, product evaluation, and document control activities.

WSP USA hosts hundreds of interns across the United States to gain hands-on, meaningful work experience to enhance their education and professional aptitude. Our interns gain exposure to real projects while working side by side with senior staff.

Northwestern Mutual's College Financial Representative Internship Program in Saint Louis, MO, provides guidance and a framework for building an integrated financial planning practice from the ground up. As an intern, you prospect and network to build a client base, develop and execute business strategies, call on potential clients, prepare financial plans, and engage in weekly coaching and training.

Civil Design, Inc. (CDI) is a multi-disciplined civil engineering firm offering civil site, structural, land surveying, and GIS services. The 2027 Summer Internship in Civil Engineering supports the CDI mission of Building Stronger Communities through one of the engineering services of Site, Transportation, Structures, and Water Resources.

The 2027 Paid Summer Internship – Sales Representative at Premier Roofing places you in St. Louis for an on-site sales internship. You will learn sales and customer communication from experienced mentors, work directly with homeowners to assess storm damage and offer solutions, and build leadership, resilience, and goal-setting skills.

WSP USA hosts hundreds of internships across the United States to gain hands-on, meaningful work experience to enhance their education and professional aptitude. Our interns gain exposure to real projects while working side by side with senior staff.

Exegy is seeking an intern to assist in the design of high-performance data processing applications for the real-time financial data industry. This is an approximately 10–12 week internship position based in St. Louis, MO (hybrid), with a start date in early summer.

Murray Company is looking for a Construction Project Engineer Intern to join our team. Specializing in the healthcare industry, we manage new constructions, additions, and renovations from concept to completion and ready to meet everyone’s needs.

Join Advantage Capital's Diverse Internship Journey! Discover Your Impact Are you ready to apply your skills in a unique and personalized way?

Anders, a top-ranked accounting firm, seeks a Tax Intern for its St. Louis office to support the Tax Department during the Winter/Spring 2028 cycle. The role involves preparing tax returns, assisting with planning, and conducting research in a hybrid work model.

KVC Missouri's Clinical Services team provides therapeutic care for children and teenagers with mental health challenges. As a Practicum Student Therapist you will deliver individual, family and group therapy under supervision, develop treatment plans, and document care in the EHR while attending weekly supervision.

Be our next Structural Design Intern for buildings projects. In this role, you will be a part of a Building Structures (Aviation, Transit and Mission Critical) focused team and reporting to a Director of Building Structures.

CDG Engineers, Inc., a full-service multi-discipline professional services firm based in St. Louis, MO, is seeking an Architectural Designer Intern to support new construction and renovation projects. You will collaborate with project teams to develop practical, innovative architectural solutions for clients while building skills in design, documentation, and project delivery.

Keeley Construction is seeking Accounting Interns to join the team in Summer 2027 in St. Louis, Missouri, United States. The role supports the Controller, Payroll, Accounts Receivable, and Accounts Payable with daily tasks, updates, and department meetings.

AECOM is seeking an Engineering Intern to be based in Saint Louis, MO. This position is expected to begin in May 2027. The responsibilities of this position include, but are not limited to: Internships are designed to introduce and build essential, hands on skills that differ from those attained in the academic arena and help to enhance the transition from student to professional.

We are actively seeking a Structural Engineer Intern to join CRB. Join our firm for an internship journey where you’ll dive into real-world project work, learn from industry leaders and fully immerse yourself in the CRB employee experience. This program is more than just an internship—it's an opportunity to grow, innovate, and make a tangible impact on how we do business.

As a student intern, you will be a member of our multi-disciplinary team and will work under the supervision of a Certified Plumbing Designer or licensed engineer. Projects may include new construction and renovation in the educational, healthcare, commercial and science & technology markets.

The Hubbell Internship Program is a 10 to 12-week program providing students the opportunity to gain corporate experience, learn about all aspects of our business, and prepare students with the kind of experience needed to have a rewarding career at Hubbell. This intern will focus on improving business visibility and operational decision-making by automating the order tracking process.

Join GFT , an award-winning architecture, engineering, and construction firm, as a Construction Management Intern and gain real-world experience in a dynamic environment. Our inclusive environment will fuel your innovation and imagination while fostering a sense of belonging.