Mechanical Engineer Intern

The Opportunity

Tetra Tech is adding a Mechanical Engineering intern to join our Atlanta team.

Why Tetra Tech

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.

Your Impact

Join Tetra Tech to make a real difference. Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.

Position Summary

As a Mechanical Engineering Intern, you will support the design and analysis of mechanical systems across industrial, commercial, and water/wastewater facilities. You will contribute to engineering deliverables including calculations, technical reports, drawings, and specifications, while gaining hands-on experience with real-world projects and design practices.

Essential Job Functions

• Support mechanical engineers in the design of mechanical systems from concept through construction, including preparation of construction documents.
• Contribute to HVAC load calculations, ventilation calculations, and basic energy modeling, while gaining exposure to applicable codes, standards, and energy efficiency practices.
• Assist in the sizing and layout of HVAC systems (airside and hydronic) and plumbing systems under the guidance of senior engineering staff.
• Participate in the development and review of construction specifications using tools such as RIB SpecLink[HB1] [HB1].
• Support construction administration efforts, including responses to contractor RFIs, review of shop drawings and submittals, and assistance with punch list activities.
• Attend site visits and field observations to gain hands-on exposure to installed systems and construction practices.
• Gain mentorship and real-world experience across commercial, industrial, and water/wastewater projects.
  
  

Required Qualifications

• Currently pursuing a Bachelor’s degree in Mechanical Engineering or a closely related field from an accredited university.
• Interest in mechanical system design, including HVAC and plumbing systems across commercial, industrial, or water/wastewater facilities.
• Foundational understanding of mechanical engineering principles such as thermodynamics and fluid mechanics.
• Familiarity with Microsoft Office. Exposure to AutoCAD or Revit is a plus.
• Interest in learning building codes, engineering standards, and design guidelines (e.g., ASHRAE).
• Ability to work both collaboratively and independently on assigned tasks.
• Strong communication skills and attention to detail.
  
  

Physical Requirements

• Ability to remain in a stationary position for extended periods while working at a computer.
• Ability to move about in an office environment to access files, equipment, and meet with colleagues.
• Ability to visit active construction sites, which may involve walking on uneven terrain, climbing stairs or ladders, standing for extended periods, and navigating areas with limited accessibility.
• Ability to lift and carry up to 25 pounds of drawings, field equipment, or related materials as needed.
• Ability to observe details during site visits, including mechanical systems, equipment installations, and construction activities.
• Ability to communicate clearly in person, over the phone, and in writing
  
  

Work Environment / Environmental Factors

• Work is primarily performed in a professional office setting with standard office equipment and typical environmental conditions (e.g., climate-controlled space, moderate noise levels).
• Periodic work is performed at construction sites, industrial facilities, or municipal infrastructure locations. These environments may involve exposure to:
• Varying weather conditions
• Noise, dust, or mechanical equipment
• Uneven surfaces or confined spaces
• Active construction activity requiring use of appropriate personal protective equipment (PPE)
• Travel to project sites, client meetings, or other offices may be required.
• The role may require adherence to site-specific safety protocols and the use of PPE, such as hard hats, safety glasses, high-visibility vests, gloves, or protective footwear.
  
  

Additional Information

This position requires periodic travel, approximately 15% or more

Life At Tetra Tech

The perks of working at Tetra Tech include:

• Comprehensive and market-competitive benefits.
• Merit-based financial rewards.
• Flexibility and company-wide commitment to work/life balance.
• Collaborative team atmosphere that values the contributions of all employees.
• Learning and development opportunities for ongoing professional growth.
  
  

About Tetra Tech

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science ® to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

We invite applications from all interested parties.

Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:

LinkedIn: @TetraTechCareers

X (Twitter): @TetraTechJobs

Additional Information

• Organization: 200 IEW