Plumbing Engineer Internships
Plumbing engineer internships give university students, recent graduates, and early-career switchers hands-on project experience across live mechanical and plumbing systems, mentorship from working engineers, and, at many employers, a path toward a full-time offer. Openings are concentrated in Consulting & Professional Services, with PAE Consulting Engineers, Legence, and P2S among the employers posting roles now.
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CMTA is one of the fastest growing engineering firms in the U.S., with nationally recognized expertise in sustainable, high-performance building engineering. We are a collaborative, innovative, and energetic team that leverages a data-driven, holistic approach to consulting engineering, performance contracting, and zero energy projects. We focus on finding engineers whose skills and personalities drive them to excel, fostering a workplace that provides unparalleled growth and career opportunities.
For college students interested in engineering design for the built environment, CMTA has a robust co-op program for students pursuing a degree in Mechanical Engineering, Electrical Engineering, and Architectural Engineering. We offer an opportunity for students to immerse themselves for one or more semesters in the consulting engineering world. Our co-ops build industry competitive skills in a hands-on environment, all while working on a team, and being trained by Professional Engineers in AutoCAD and Revit. The skills our co-ops learn allow them to create real construction drawings for real CMTA projects.
This position is a full time (40 hrs./week), onsite position with a competitive hourly pay rate and eligible for overtime pay. This position will start in May 2027 and go through Summer 2027. Dates are flexible with school calendar. Our hope is that the co-op students that are hired will do multiple co-op rotations with CMTA with possible consideration for full-time employment upon graduation.
Job Description:
This position provides a unique opportunity for hands-on training in plumbing design. The ideal candidate will possess excellent interpersonal skills and be able to work well with a team, and independently. Our engineers will teach you how we design and implement mechanical systems/infrastructure and implement energy efficient measures in our building projects. This is a great opportunity to work on some of the most challenging and complex MEP projects and become an important part of our design team.
Job Functions: (may include but are not limited to)
- Produce detailed layout and equipment details of Plumbing systems
- Produce one-line diagrams/schematics
- Assist the design team in the process of assembling organized sets of drawings
- May assist in the data collection and/or field verification
- Work in conjunction with designers and engineers to help develop all aspects of a project
- Pursuing a Bachelor of Mechanical Engineering, preferably a sophomore (2nd year), or junior (3rd year)
- Strong interest in Building Systems Mechanical Engineering (emphasis on Plumbing)
- AutoCAD and REVIT experience preferred
- Strong interpersonal and communication skills
- Proficiency with Microsoft Word and Excel
- Ability to work both independently and with a team
- Ability to work full time in our office throughout the co-op term
- Ability to travel locally for job site inspections, field work, etc.
About Legence
Legence (Nasdaq: LGN) is a leading provider of engineering, consulting, installation, and maintenance services for mission-critical systems in buildings. The company specializes in designing, fabricating, and installing complex HVAC, process piping, and other mechanical, electrical, and plumbing (MEP) systems—enhancing energy efficiency, reliability, and sustainability in new and existing facilities. Legence also delivers long-term performance through strategic upgrades and holistic solutions. Serving some of the world’s most technically demanding sectors, Legence counts over 60% of the Nasdaq-100 Index among its clients.
Benefits Overview
401(k) Plan with Company Match: Currently match contributions dollar-for-dollar up to 4% of eligible pay; immediate vesting.
Health & Welfare Benefits: Employer provided medical, dental, vision, prescription drug, Employee Assistance Program and accident & illness coverage.
Life and Disability Insurance: Employer provided basic life insurance and AD&D valued at 50K coverage amount with the option for voluntary buy up for additional coverage.
Time Off: Flexible non-accrual vacation; company holidays per policy. (For California employees, this is separate from California paid sick leave, if applicable.)
Expenses: Business travel and related expenses reimbursed per company policy.
Reasonable Accommodations
If you need assistance or accommodations during the application or interview process, please contact us at ta@wearelegence.com or your dedicated recruiter with the job title and requisition number.
Employment Eligibility
Candidates must have current work authorization in the U.S.; visa sponsorship is not available for this position.
Third-Party Recruiting Disclaimer
Legence and its affiliates do not accept unsolicited resumes from agencies; any such submissions without a prior signed agreement authorized by Legence Holdings LLC's CHRO or Director of Talent Acquisition will not incur fees and are considered property of Legence.
Pay Disclosure & Considerations
Where pay ranges are indicated, please note that a successful candidate’s exact pay will be determined based relevant job-related factors, including any of the following: candidate’s experience, skills, and qualifications, as well as geographic and market considerations. We are committed to ensuring fair and competitive compensation for all employees and comply with all applicable salary transparency laws.
Equal Employment Opportunity Employer
Legence and its affiliate companies are proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), marital or familial status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, other non-merit-based factors, and any other characteristic protected under applicable local, state or federal laws and regulations.
EEO is the Law
CMTA is one of the fastest growing engineering firms in the U.S., with nationally recognized expertise in sustainable, high-performance building engineering. We are a collaborative, innovative, and energetic team that leverages a data-driven, holistic approach to consulting engineering, performance contracting, and zero energy projects. We focus on finding engineers whose skills and personalities drive them to excel, fostering a workplace that provides unparalleled growth and career opportunities.
For college students interested in engineering design for the built environment, CMTA has a robust co-op program for students pursuing a degree in Mechanical Engineering, Electrical Engineering, and Architectural Engineering. We offer an opportunity for students to immerse themselves for one or more semesters in the consulting engineering world. Our co-ops build industry competitive skills in a hands-on environment, all while working on a team, and being trained by Professional Engineers in AutoCAD and Revit. The skills our co-ops learn allow them to create real construction drawings for real CMTA projects.
This position is a full time (40 hrs./week), onsite position with a competitive hourly pay rate and eligible for overtime pay. This position will start in May 2027 and go through Summer 2027. Dates are flexible with school calendar. Our hope is that the co-op students that are hired will do multiple co-op rotations with CMTA with possible consideration for full-time employment upon graduation.
Job Description:
This position provides a unique opportunity for hands-on training in plumbing design. The ideal candidate will possess excellent interpersonal skills and be able to work well with a team, and independently. Our engineers will teach you how we design and implement mechanical systems/infrastructure and implement energy efficient measures in our building projects. This is a great opportunity to work on some of the most challenging and complex MEP projects and become an important part of our design team.
Job Functions: (may include but are not limited to)
- Produce detailed layout and equipment details of Plumbing systems
- Produce one-line diagrams/schematics
- Assist the design team in the process of assembling organized sets of drawings
- May assist in the data collection and/or field verification
- Work in conjunction with designers and engineers to help develop all aspects of a project
- Pursuing a Bachelor of Mechanical Engineering, preferably a sophomore (2nd year), or junior (3rd year)
- Strong interest in Building Systems Mechanical Engineering (emphasis on Plumbing)
- AutoCAD and REVIT experience preferred
- Strong interpersonal and communication skills
- Proficiency with Microsoft Word and Excel
- Ability to work both independently and with a team
- Ability to work full time in our office throughout the co-op term
- Ability to travel locally for job site inspections, field work, etc.
About Legence
Legence (Nasdaq: LGN) is a leading provider of engineering, consulting, installation, and maintenance services for mission-critical systems in buildings. The company specializes in designing, fabricating, and installing complex HVAC, process piping, and other mechanical, electrical, and plumbing (MEP) systems—enhancing energy efficiency, reliability, and sustainability in new and existing facilities. Legence also delivers long-term performance through strategic upgrades and holistic solutions. Serving some of the world’s most technically demanding sectors, Legence counts over 60% of the Nasdaq-100 Index among its clients.
Benefits Overview
401(k) Plan with Company Match: Currently match contributions dollar-for-dollar up to 4% of eligible pay; immediate vesting.
Health & Welfare Benefits: Employer provided medical, dental, vision, prescription drug, Employee Assistance Program and accident & illness coverage.
Life and Disability Insurance: Employer provided basic life insurance and AD&D valued at 50K coverage amount with the option for voluntary buy up for additional coverage.
Time Off: Flexible non-accrual vacation; company holidays per policy. (For California employees, this is separate from California paid sick leave, if applicable.)
Expenses: Business travel and related expenses reimbursed per company policy.
Reasonable Accommodations
If you need assistance or accommodations during the application or interview process, please contact us at ta@wearelegence.com or your dedicated recruiter with the job title and requisition number.
Employment Eligibility
Candidates must have current work authorization in the U.S.; visa sponsorship is not available for this position.
Third-Party Recruiting Disclaimer
Legence and its affiliates do not accept unsolicited resumes from agencies; any such submissions without a prior signed agreement authorized by Legence Holdings LLC's CHRO or Director of Talent Acquisition will not incur fees and are considered property of Legence.
Pay Disclosure & Considerations
Where pay ranges are indicated, please note that a successful candidate’s exact pay will be determined based relevant job-related factors, including any of the following: candidate’s experience, skills, and qualifications, as well as geographic and market considerations. We are committed to ensuring fair and competitive compensation for all employees and comply with all applicable salary transparency laws.
Equal Employment Opportunity Employer
Legence and its affiliate companies are proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), marital or familial status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, other non-merit-based factors, and any other characteristic protected under applicable local, state or federal laws and regulations.
EEO is the Law
Plumbing Engineer Internship Market
Who's Hiring
Top Industries Hiring
- Consulting & Professional Services
Tips for Your Plumbing Engineer Internship Search
Apply months before the internship starts
Large engineering firms and MEP consultancies open summer internship recruiting the preceding fall, often closing applications before the year turns. Smaller companies and co-op programs post closer to start dates. Check listings in September, then again in January, to catch both hiring waves.
Build a portfolio before you apply
Hiring teams for plumbing engineer interns expect limited work history and look for proof of technical ability instead. Document two or three projects with the software used, such as Revit, AutoCAD, or calculation sheets, and make the work viewable, whether through a hosted portfolio, a shared drive folder, or a PDF you can attach to applications.
Work your campus network alongside direct applications
Campus career fairs surface structured internship programs tied to your university, and professors or career center staff often know which firms recruit from your school before roles post publicly. Applying directly to smaller consultancies and contractors running their own cohorts at the same time widens the pool you reach.
Practice your technical screen out loud before interviews
Plumbing engineer intern interviews typically include a technical screen covering mechanical systems, load calculations, or code-compliance scenarios. Practice walking through your reasoning aloud, not just arriving at an answer, because interviewers weigh how you think through a problem as much as the final result.
Target structured internship programs at larger firms
Many large MEP and mechanical engineering firms run formal intern cohorts designed to train people new to building systems work. These programs offer structured mentorship and rotation, recruit in the fall, and fill fast. Identify the firms running them, confirm their recruiting timeline, and get your application in during the first wave.
Set your work-type filter before you start
On-site roles are 29% of the plumbing engineer internships listed here. Decide what you can realistically commit to before you search, then filter by location and work type so you're not sorting through roles you can't take. It saves time and keeps your applications focused on positions you can actually accept.
Plumbing Engineer Internships: Frequently Asked Questions
How do I get a plumbing engineer internship?
Lead with coursework and personal projects rather than work history, since hiring teams expect limited experience at the intern level. A design portfolio or set of documented CAD drawings gives recruiters something concrete to assess. Apply directly to employers online, and attend campus career fairs, where recruiters often move faster for students they meet in person.
Can a plumbing engineer internship turn into a full-time job?
Many employers extend return offers to strong interns, but conversion is never guaranteed. What drives it for plumbing engineer interns is performance on real project work, available headcount on the team, and return-offer timelines that often come near the end of the internship. Do strong work, ask questions, and treat the internship as an audition without counting on the outcome.
When should I apply for plumbing engineer internships?
Earlier than most students expect. Large engineering employers and consultancies recruit summer interns the preceding fall, often wrapping interviews by October or November. Smaller firms and co-op programs post closer to start dates, so openings appear year-round. Checking listings regularly means you catch both waves.
Are plumbing engineer internships paid?
Most professional plumbing engineer internships in the United States are paid. Compensation varies by company size, industry, and location, and listings display the range where the employer chooses to disclose it. Unpaid arrangements are uncommon at established engineering firms and typically surface only at very small shops or through certain academic co-op structures.
What should a plumbing engineer internship resume include?
Lead with projects, not work history. Include two or three documented projects that name the tools used, the problem solved, and where the work can be seen, such as a CAD or design portfolio. Add relevant coursework in mechanical systems, fluid mechanics, or building systems. Keep the resume to one page and put the strongest project first.
Are there remote plumbing engineer internships?
Yes. Remote and hybrid roles make up 71% of the plumbing engineer internship listings here, with the rest on-site. Remote cohorts fill fast because they draw applicants from across the country, so apply early and filter by work type to see them before they close.
Can international students get plumbing engineer internships?
Yes. F-1 students can intern through CPT while enrolled or through OPT work authorization after finishing a degree, and the employer does not have to file anything for either, so many companies are open to international interns. Confirm your eligibility and timing with your university's international student office before accepting an offer.
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