Mechanical Engineer, EIT

The Opportunity

Tetra Tech is seeking a Mechanical Engineer, EIT to join our growing team in Orlando, FL.

In this role, you will support the design and delivery of mechanical systems for a variety of commercial, industrial, and water/wastewater facilities. Working alongside experienced engineers and multidisciplinary project teams, you will contribute to mechanical system design, engineering calculations, construction documents, and construction administration activities.

This is an excellent opportunity for an early-career mechanical engineer looking to strengthen their technical expertise, gain experience on diverse infrastructure projects, and continue progressing toward Professional Engineer (PE) licensure.

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 Engineer, EIT, you will assist in the engineering design, analysis, and documentation of mechanical systems for commercial, industrial, and municipal water/wastewater facilities. You will work under the guidance of licensed Professional Engineers to develop technical calculations, equipment selections, drawings, specifications, and construction documents.

You will collaborate with engineers across multiple disciplines, participate in project coordination, and support construction-phase activities while continuing to develop your technical capabilities and understanding of engineering design practices.

Essential Job Functions

• Perform mechanical engineering design and calculations for HVAC, ventilation, hydronic, and plumbing systems under the supervision of licensed Professional Engineers.
• Prepare HVAC heating and cooling load calculations, ventilation calculations, equipment sizing, and basic energy analyses in accordance with applicable codes and standards.
• Assist in the design and layout of mechanical systems, including air distribution, piping, ductwork, pumps, and associated mechanical equipment.
• Develop and coordinate engineering drawings, details, schedules, and construction documents using AutoCAD, Revit, and other applicable design software.
• Support the preparation of technical specifications, engineering reports, design narratives, and equipment schedules using tools such as RIB SpecLink.
• Evaluate mechanical equipment and system requirements, including equipment selection, performance criteria, and coordination with other engineering disciplines.
• Collaborate with structural, electrical, civil, and process engineers to ensure mechanical systems are integrated into overall project designs.
• Assist with construction administration activities, including reviewing shop drawings and equipment submittals, preparing responses to contractor RFIs, and supporting punch list development.
• Participate in site visits, field investigations, and construction observations to evaluate existing conditions, verify design requirements, and support project execution.
• Apply applicable building codes, mechanical codes, ASHRAE standards, and engineering design guidelines.
• Work with senior engineers and project managers to deliver accurate, coordinated engineering documents while meeting project schedules and quality standards.
• Continue developing technical expertise and professional engineering competencies through hands-on project experience, mentorship, and collaboration with experienced engineering professionals.

Required Qualifications

• Bachelor's degree in Mechanical Engineering or a closely related engineering discipline from an accredited university.
• Successful completion of the Fundamentals of Engineering (FE) exam and possession of, or eligibility to obtain, Engineer-in-Training (EIT) certification.
• Foundational knowledge of mechanical engineering principles, including thermodynamics, fluid mechanics, heat transfer, and mechanical system design.
• Understanding of HVAC and plumbing system design principles, including equipment sizing, load calculations, and piping and ductwork layouts.
• Familiarity with AutoCAD, Revit, or similar engineering design software.
• Basic understanding of applicable mechanical codes, building codes, and industry standards, including ASHRAE.
• Proficiency with Microsoft Office applications, including Excel and Word.
• Ability to interpret engineering drawings, technical specifications, and design documentation.
• Strong analytical, problem-solving, organizational, and communication skills.
• Ability to work collaboratively with multidisciplinary engineering teams while managing assigned technical tasks.

Preferred Qualifications

• 0–3 years of mechanical engineering design experience, including relevant internships or co-op assignments.
• Experience or exposure to mechanical design for commercial, industrial, municipal, or water/wastewater facilities.
• Familiarity with HVAC load calculation software, energy modeling tools, or mechanical design applications.
• Exposure to engineering consulting, construction document preparation, and construction administration.
• Interest in advancing toward Professional Engineer (PE) licensure.
• Ability to remain in a stationary position for extended periods while working at a computer.
• Ability to move throughout an office environment to access equipment, files, and collaborate with colleagues.
• Ability to visit active construction sites, which may involve walking on uneven terrain, climbing stairs or ladders, and standing for extended periods.
• Ability to lift and carry up to 25 pounds of drawings, field equipment, or related materials as needed.
• Ability to observe mechanical systems, equipment installations, and construction activities during field visits.
• Ability to communicate effectively in person, over the phone, and in writing.

Work Environment / Environmental Factors

• Work is primarily performed in a professional office environment with standard office equipment.
• Periodic visits to construction sites, industrial facilities, and municipal infrastructure locations may involve exposure to varying weather conditions, noise, dust, mechanical equipment, uneven surfaces, and active construction activities.
• Adherence to applicable safety protocols and use of personal protective equipment (PPE), including hard hats, safety glasses, high-visibility vests, and protective footwear, may be required.
• Travel to project sites, client meetings, and other offices may be required.

Additional Information

This position requires periodic travel, approximately 15% or more, depending on project needs

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 25,000 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