Sr. Mechanical 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.

Job Description

The Opportunity

Are you ready to lead the mechanical design of high-performance buildings that shape communities and critical infrastructure? AECOM’s Ohio Buildings + Places team is seeking a Senior Mechanical Engineer to provide technical leadership, mentor emerging talent, and deliver complex HVAC and building systems solutions across a diverse portfolio of projects. This is a Hybrid opportunity working out of AECOM’s Columbus office.

This is a senior technical leadership role for an experienced engineer who thrives in both independent execution and collaborative, multi-disciplinary environments—someone who values design excellence, accountability, and developing the next generation of engineers.

 About AECOM

At AECOM, we’re delivering a better world.
We believe infrastructure creates opportunity for everyone—improving how people live, work, and connect. Our clients trust us to bring together the best people, ideas, technical expertise, and digital solutions across transportation, buildings, water, environment, and energy.

We are one global team—50,000 strong—united by a shared purpose: to deliver a better world through excellence, innovation, and integrity.

About the Ohio Buildings + Places Team

AECOM’s Ohio Buildings + Places practice—anchored in Columbus and Cleveland—is one of the most established and highest-performing B+P teams in the United State. Our integrated services include architecture, interiors, building MEP systems and structural engineering, urbanism and planning, advisory services, and digital delivery.

We collaborate across AECOM business lines and regions to deliver vertically integrated solutions for Public Non-Federal, Federal (DoD and Civilian), Healthcare, Science & Technology, Higher Education, Justice, Mission Critical, Logistics, and Commercial clients. Design excellence, performance, resiliency, and innovation guide our work at every scale.

 What You’ll Do

As a Senior Mechanical Engineer, you will lead mechanical system design and delivery from concept through construction administration while serving as a trusted technical resource for clients and internal teams.

Technical Leadership & Design Excellence

• Lead the mechanical system design as a trusted technical resource for clients and internal teams while also collaborating and contributing to technical excellence within AECOM's global practice.

• Serve as the mechanical discipline lead on projects of varying size and complexity, ensuring technical quality, code compliance, and constructability.

• Apply sound engineering judgment to evaluate, select, and adapt mechanical systems, equipment, and materials.

• Stay current with applicable codes, standards, and emerging technologies, including ASHRAE, IMC, IPC, and IECC.

• Analyze system performance and energy use to optimize efficiency, resilience, and lifecycle value.

Project Delivery & Coordination

• Execute mechanical design from concept through construction administration, including calculations, specifications, reports, and drawing development.

• Coordinate closely with architectural, structural, electrical, plumbing, fire protection, and specialty disciplines to ensure integrated solutions.

• Perform and lead site investigations to assess existing systems and inform design decisions.

• Review shop drawings, RFIs, and submittals; attend client and construction meetings as part of construction administration.

• Ensure projects are delivered within scope, schedule, and budget expectations.

Team Leadership & Mentorship

• Mentor and guide junior engineers and