Senior Mechanical/Plumbing Engineer

Company Description

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM  is seeking a Senior Mechanical Engineer to join our Chicago or Minneapolis office and be part our international engineering practice. This individual will design HVAC for laboratories, clean rooms, healthcare, and high-tech clients. The ideal candidate will have a passion for designing custom solutions for unique projects, mentoring a team, interacting with clients, and developing calculations, construction drawings, design reports, and specifications to support mechanical, fire protection and plumbing systems in accordance with building codes.

AECOM was recently recognized by Fortune Magazine as the World’s Most Admired Company in our industry, and has a 100% Corporate Equity index rating by the Human Rights Campaign Foundation. We are ranked the #1 Environmental Firm and the #1 Global Design Firm by Engineering News Record. Our Minneapolis office has recently completed a project for Fermilab LBNF, the light rail extension for Minneapolis Metro Transit, a new clinic for Hennepin County, and is currently working on a clear room design for a confidential client. We work closely with our Michigan office which is embarking on a county-wide electrification and decarbonization study. Our unique combination of architectural engineering, transportation engineering, and environmental scientists means we work on the most unique and interesting projects in the industry! If you’re curious about what a career at AECOM could look like, please get in touch.

Our Buildings + Places practice includes architecture, interiors, building and system engineering, sustainability and decarbonization consulting, urbanism, planning and strategy, economics, technology solutions, asset advisory, and cost and program management. This diverse team assists our clients from strategy through project realization, creating positive outcomes for those who occupy and use the buildings and environments we help to create.

AECOM’s dedication to sustainability is embedded in our culture. AECOM is committed to striving for better by reducing emissions and lowering energy use. Our sustainable legacies strategy has four key objectives: embed sustainable development and resilience across the company’s work, improve social outcomes for communities, achieve net-zero carbon emissions and enhance governance. We are leading the change towards a more sustainable future by creating innovative tools to guide early-stage infrastructure decisions for cities, airports, transportation systems, water treatment and buildings. Our clients trust us to bring together the best people, ideas, technical expertise and digital solutions to our work in transportation, buildings, water, the environment and new energy. We’re one global team – 47,000 strong – driven by a common purpose to deliver a better world.

Job Responsibilities

• The Senior Mechanical Engineer should be capable of working independently with limited supervision to complete both small and large projects and may serve as a discipline representative in client meetings.
• Excellent written and verbal communication skills with internal and external clients is required.
• Candidate must be well organized, be able to demonstrate critical thinking to quickly recognize issues and be part of the solution.
• Have knowledge of the ASHRAE standards, NFPA and ICC codes.
• Have experience with analysis and layout of Plumbing and/or HVAC systems, hydronic piping, medical gas, air distribution and associated products and materials.
• Serve as technical advisor for team.
• Participate in interdisciplinary review of project deliverables.
• Perform quality control review of design calculations or drawings.
• Prepare technical specification sections.
• Provide input to the development of engineering budget and schedule to meet requirements.
• Provide technical support and mentoring to junior engineers.

Qualifications

Minimum Qualifications

• BA/BS + 6 years of related experience or demonstrated equivalency of experience and/or education.

Preferred Qualifications

• Experience on complex mechanical and/or plumbing design projects such as Healthcare facility, Laboratory or similar
• Thorough working knowledge of relevant engineering software: REVIT, CAD, load calculation software, Excel
• Construction phase experience: submittal reviews, on-site inspections, RFIs, change orders, etc.
• Plumbing and Medical Gas design experience for hospitals and labs
• Experience preparing proposals, interviewing, communicating with clients

Additional Information

Sponsorship is not available for this position now or in the future.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.

What makes AECOM a great place to work

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity.

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.