Senior Mechanical Engineer

Senior Mechanical Engineer

Location:

Chicago, IL

Join to apply for the Senior Mechanical Engineer role at Affiliated Engineers, Inc.

Founded in 1978, Affiliated Engineers, Inc. (AEI) brings together expertise and innovation to solve the most complex challenges. With more than 900 professionals across 22 offices, we support mission‑driven organizations in designing systems and environments that advance society and improve lives. We help shape the future of healthcare, science and technology, energy, education, and other vital sectors.

Our work ranges 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 Thermal Energy Center. AEI consistently earns national recognition from leading industry publications, including Building Design+Construction, Engineering News‑Record, and Consulting‑Specifying Engineer. We have been named the #1 Laboratory Engineering Firm in the nation and received multiple Best of the Best Project awards.

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.

As a Mechanical Senior Engineer in our Chicago office, you will help empower clients to achieve energy‑efficient building solutions, save global environments, and create a better, greener future for all. You will be responsible for the engineering design process on assigned projects within a particular discipline, lead and develop innovative engineering solutions to align with project, client, and project partner needs, and lead the discipline team in implementing the solutions.

• BSME/BSAE (or other engineering discipline with applicable experience)
• 10+ years of experience designing HVAC building systems for research, healthcare or higher education facilities
• Professional engineering registration preferred
• Proficiency in computer operation for engineering design programs (e.g., Revit MEP, AutoCAD, Navisworks) preferred

• Strong spoken and written communication skills
• Excellent organization and time‑management skills
• Quick technical comprehension and motivation focused on client outcomes
• Ability to prioritize multiple tasks
• Effective working individually and within team environments

• A flexible, collaborative environment where your well‑being matters.
• Real opportunities to grow – through mentorship, professional development programs and exposure to high‑impact projects across disciplines.
• Collaboration 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.

$90,000 - $140,000

• Seniority level:
  Mid-Senior level
• Employment type:
  
  Full-time
• Job function:
  Engineering and Information Technology
• Industries:
  Design Services, Construction, and Industrial Machinery Manufacturing

Apply online at

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