Building Mechanical Engineering Intern - Summer 2027 (FED/STL)

Jacobs Engineering Group Inc.; St. Louis, Northern (MO, KY); Hybrid; USD 48,000 - 60,000; Full time

Job summary

Jacobs Engineering Group Inc. is seeking a Building Mechanical Engineering Intern for Summer 2027 in St. Louis, MO. You will contribute to designing HVAC and building mechanical systems, gaining exposure to a range of projects and software under professional mentorship.

This internship emphasizes collaboration, continuous learning, and the chance to work with a diverse team of engineers, architects, and designers on building projects for federal clients.

Qualifications

• US Citizenship is required.
• Currently enrolled in a degree-seeking program for Mechanical or Archtectural Engineering or another closely related field.
• Completion of at least 2 years of collegiate coursework.
• Interest in designing building mechanical systems, including HVAC and piping utilities, for buildings and facilities.
• Familiarity with Revit or other 3D software.

Responsibilities

• Design building mechanical systems and HVAC for projects, including new multi-building complexes and renovations.
• Collaborate with a multidisciplinary team of engineers, architects and designers.
• Support project coordination, data collection and use of computer-aided engineering tools.
• Receive mentorship from Professional Engineers and technical experts to perform analysis and design tasks.
• Work with teams across different disciplines to deliver high-quality outcomes.

Skills

US Citizenship

Revit

Interdisciplinary teamwork

Education

Mechanical Engineering program

Architectural Engineering program

Tools

Revit

Job description

Building Mechanical Engineering Intern - Summer 2027 (FED/STL)

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

We are searching for a Mechanical Engineering Intern to join our Federal Buildings team in St. Louis, MO. If you are a Mechanical Engineering major with an interest in mechanical building systems this may be the perfect opportunity for you!

As an intern with our team you can expect to design everything from new, multi-building complexes to intricate historic structure renovations! Although your focus will be on HVAC, and building mechanical systems you will be part of a highly dynamic and multi-

discplinary team of engineers, architects, and designers,

We’ll rely on you to support our teams on critical projects while fostering a culture of continuous learning and inclusion. You’ll work alongside professional engineers and designers, gaining exposure to project coordination, relevant computer-assisted engineering software, data collection and more. With mentorship and guidance from our Professional Engineers and technical experts, we will count on you to assist in the performance of analysis and design for our projects.

Our North American Internship Program will allow you to engage with interdisciplinary counterparts and senior leadership across all business units and geographies- giving you a chance to network, explore the company, and learn more about our dynamic industry. To be successful in this position you will need strong communication and interpersonal skills as you work closely with your Mechanical Lead, Project Managers, Professional Engineers, and Designers across different disciplines. You should possess an attitude of taking independent initiative, an eagerness to learn, enjoy creative problem-solving, and an ability to reliably work independently while also remaining dedicated to teamwork.

Pave the way for your career with a company that inspires and empowers you to deliver your best work so you can evolve, grow and succeed - today and into tomorrow.

Here's what you'll need

• US Citizenship is required
• Currently enrolled in a degree-seeking program for Mechanical or Archtectural Engineering or another closely related field
• Completion of at least 2 years of collegiate coursework
• Interest in designing building mechanical systems, including HVAC and piping utilities, for buildings and facilities.
• Familiarity with Revit or other 3D software

Ideally, you’ll also have:

• Previous internship experience with a design/consulting firm or government agency
• Working knowledge of Revit or other 3D software

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to a 401(k) plan, as well as legally mandated benefits.

The base salary range for this position is $48,000.00 to $60,000.00; though will be paid hourly based on hours worked. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on September 09, 2026. This position will be open for at least 3 days.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support .