Commissioning Engineer Intern

Affiliated Engineers, Inc.; Phoenix (AZ); On-site; USD 25,000 - 36,000; Full time

Job summary

Affiliated Engineers, Inc. in Phoenix seeks a Commissioning Engineer Intern for Summer 2027 to gain hands-on experience testing installations and supporting energy-efficient building projects in a collaborative environment.

You’ll work with seasoned engineers on meaningful jobs, develop communication, organization, and teamwork skills, and observe how a leading engineering firm delivers practical, high-impact solutions to clients.

Qualifications

• Enrollment in Mechanical or Architectural Engineering program from ABET accredited school.
• Completed 3 years of coursework or have a junior standing.
• Minimum GPA of 2.5.
• Leadership involvement in extracurricular activities/student organizations.

Responsibilities

• Assist testing of installations and commissioning activities on projects.
• Learn from professionals and observe firm operations.
• Build professional networks for future opportunities.

Skills

Communication skills

Detail oriented

Organization & time management

Fast technical comprehension

Multitasking

Team collaboration

Education

ABET-accredited Mechanical or Architectural Engineering program

3 years of coursework or junior standing

Job description

Join a Team Where Engineering Excellence Drives Opportunity

At Affiliated Engineers, Inc. (AEI), we bring together expertise and innovation to solve the most complex challenges. Since 1978, we’ve supported mission-driven organizations in designing systems and environments that advance society and improve lives. Today, with more than 1000 professionals across 23 offices, we help shape the future of healthcare, science and technology, energy, education, and other vital sectors.

From elevating patient care in Mayo Clinic’s world-class hospitals to enabling discovery in high-containment laboratories for U.S. agencies and driving environmental progress with Microsoft’s renowned Thermal Energy Center, our work enriches the human experience, safeguards the environment, and pushes the boundaries of possibility.

AEI consistently earns national recognition from leading industry publications, including Building Design+Construction, Engineering News-Record, and Consulting-Specifying Engineer, with distinctions such as being named the #1 Laboratory Engineering Firm in the nation and receiving multiple Best of the Best Project awards, underscoring the lasting legacy of our work.

At AEI, you’ll join a collaborative community where your expertise fuels innovation, your ideas drive progress, and your work helps shape a brighter future.

Commissioning Engineer Intern (Phoenix office) – Summer 2027

As a Commissioning Engineer Intern in our Phoenix office for Summer 2027, you will help us empower our clients to achieve energy-efficient building solutions, save global environments, and create a better, greener future for all.

Here’s Why We Need You

In this role, you will have the opportunity to approach engineering in unconventional ways: testing the installations rather than designing them. You will apply your knowledge while working on significant and complex projects, work alongside professionals known for advanced engineering solutions, observe how a successful engineering firm operates, establish ties that could solidify your professional future, and learn within a friendly, supportive environment.

Expertise Of Our Most Successful Commissioning Engineer Intern

• Enrollment in Mechanical or Architectural Engineering program from ABET accredited school.
• Completed 3 years of coursework or have a junior standing.
• Minimum GPA of 2.5.
• Leadership involvement in extracurricular activities/student organizations.

Effective Skills To Help You Flourish

• Strong spoken and written communications skills.
• Detail oriented and able to follow logical flows.
• Excellent organization and time management skills.
• Quick technical comprehension and motivation focused on client outcomes.Able to effectively prioritize multiple tasks.Effective working individually and within team environments

When You Work Here, You Can Expect

• A flexible, collaborative environment where your well-being matters—because your best work happens when you’re supported.
• Real opportunities to grow—through mentorship, professional development programs, and exposure to high-impact projects across disciplines.
• To collaborate with inspiring teammates who challenge the status quo, foster innovation, and pave the way for future leaders.
• A benefits package that offers health, dental, vision, and retirement, a performance-based year-end bonus, and thoughtful perks tailored to your needs—whether that’s a flexible work environment, wellness resources, or community-focused initiatives, we’ll continue to invest in.

AEI is proud to be an EEO/AA Employer/Vet/Disabled.