Senior Mechanical Engineer

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’s Ohio Buildings + Places team is seeking a Senior Mechanical Engineer to lead the design and delivery of high-performance building systems across diverse market sectors. This hybrid role (Columbus, OH) is a senior technical leadership position for an experienced engineer who excels in complex HVAC design, cross-disciplinary coordination, and mentoring emerging talent.

Our Ohio B+P practice—based in Columbus and Cleveland—is one of AECOM’s highest-performing teams, providing integrated architecture, engineering, planning, and digital delivery services. We serve public, federal, healthcare, science & technology, higher education, mission critical, logistics, and commercial clients, with a strong focus on design excellence, performance, and resilience.

Key Responsibilities

Technical Leadership & Design

• Lead mechanical system design from concept through construction administration.
• Serve as the mechanical discipline lead, ensuring technical quality, code compliance, and constructability.
• Apply sound engineering judgment to system selection, energy performance, and lifecycle optimization.
• Maintain expertise in ASHRAE, IMC, IPC, IECC, and emerging technologies.

Project Delivery & Coordination

• Produce calculations, drawings, specifications, and technical reports.
• Coordinate with architectural, structural, electrical, plumbing, fire protection, and specialty disciplines.
• Lead site investigations, review submittals and RFIs, and support construction administration.
• Deliver projects within defined scope, schedule, and budget.

Team Leadership & Mentorship

• Mentor and review the work of junior engineers and designers.
• Provide clear, constructive technical feedback and support skill development.
• Establish yourself as a trusted technical leader within the Ohio B+P team and AECOM’s US practice.

Proposals & Practice Support

• Contribute to proposals, scopes, fees, and technical narratives.
• Support best practices and continuous improvement within the mechanical discipline.

Minimum

• Bachelor’s degree in Mechanical Engineering.
• 6+ years of relevant experience.
• Professional Engineer (PE) license.

Preferred

• 10+ years in consulting engineering or design-build.
• Experience in federal, healthcare, lab, mission critical, and commercial projects.
• Knowledge of LEED and sustainable design.
• Proven ability to manage multiple projects and lead technical teams.
• Strong communication, organization, and leadership skills.

• Location: Columbus, Ohio (Hybrid)
• U.S. work authorization sponsorship is not available for this position.

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.