Mechanical Engineering Intern

Location: Orange, CA, us

Company Description

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Job Description

AECOM is seeking a Mechanical Engineering Intern to be based in the Orange, CA office.

This position is expected to begin in Spring/Summer 2026.

Internships at AECOM offer students in undergraduate and graduate programs the opportunity to gain valuable hands-on experience in engineering, design, and infrastructure projects that make a real-world impact. Interns work with cutting-edge technology, learn industry’s best practices, and collaborate with experienced professionals in a globally recognized firm. The program fosters both technical and professional skill development while providing networking opportunities that can enhance future career prospects. Additionally, AECOM’s dedication to innovation and sustainability enables interns to contribute to meaningful projects that help shape communities and the built environment.

The responsibilities of this position include, but are not limited to:

• Performs a variety of assignments and tasks designed to develop professional work knowledge and abilities while working under close supervision.
• Assisting with calculations, drafting, and setting up project design plans and documents.
• Provide HVAC and plumbing equipment research support.
• Communicating with vendors and coordinating learning sessions.

Qualifications

Minimum Requirements: 

• Candidates must be pursuing a bachelor’s degree or higher in Mechanical Engineering, or related field and must have completed at least two years of study. Candidates who have recently graduated with a bachelor’s degree and plan to continue with a master’s degree are eligible to apply for these positions. Graduates must have been enrolled in their bachelor’s degree in the most previous school term with an interest in pursuing an advanced degree in the same or similar discipline at the conclusion of the internship.

Preferred Qualifications: 

• Assist in the production of all phases of the project design plans process.
• General knowledge in HVAC or MEP.
• Some Knowledge of AutoCAD and/or Revit.
• Knowledgeable in the Microsoft Office Suite of programs.
• Well organized and possesses an innovative mindset.

Additional Information

• Relocation assistance is not available for this position.
• Sponsorship for US employment authorization is not available now or in the future for this position.
• This position requires a hybrid work schedule which includes office work in Orange, CA. The selected candidate must be available to work in Orange, CA on a scheduled basis.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.