Senior Mechanical Engineer - job 3 of 10

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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 be based in Orange, CA; Denver, CO; or Columbus, OH.

About AECOM: 

AECOM is a globally recognized architecture and engineering design firm. This global presence allows our creative designers to have a positive impact on millions of lives located around the globe. Our practice is centered around people and the way that they interact and experience our designs and the built environment.  By leveraging the design thought process our multi-disciplinary teams develop solutions that solve client and global challenges. Our projects have a direct positive impact on the spaces and policies that define the world we live in, ultimately creating a thoughtful, resilient, and beautiful future. 

About Buildings + Places: 

Our Buildings + Places practice includes architecture, interiors, building and system engineering, urbanism, and planning and landscape design, strategy +, economics, technology solutions, asset advisory, and cost and program management. This 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. Our practice work includes a wide range of small to large projects in varied market sectors such Science & Technology, Advanced Manufacturing, Commercial, Aerospace, Higher Education, Industrial and Process, Transportation, Aviation Sports and Federal market sectors.  We look to combine beauty, sustainability, resiliency, and innovation in our projects and believe these values can be instilled in any project regardless of size or budget.  

The Senior Mechanical Engineer works in a highly collaborative environment on a wide range of projects. The ideal candidate will have a passion for designing building mechanical systems and supporting junior staff. The Engineer knows how to perform the technical calculations and design, understands the project requirements and the effort required to complete the work. The candidate should be able to design the projects from concept up to construction and delivery to the Client. Candidate should be capable of working independently with limited supervision to complete both small and large complex projects. Excellent written and verbal communication skills with internal and external clients is required. Candidate must be well organized, be able to demonstrate critical thinking and can quickly recognize issues and be part of the solution. 

The responsibilities of this position include, but are not limited to: 

• Mechanical engineering from conceptual design through construction administration, commissioning and post-occupancy 
• Be competent in all aspects of mechanical systems design for a variety of types of projects or markets to complete routing engineering assignments and calculations 
• Writing reports for internal and external purposes based on findings 
• Stays current on codes and technologies appropriate to the Mechanical discipline 
• Researches, develops, designs, specifies, and witnesses the testing of mechanical systems, equipment, components, and materials, applying principles and techniques of mechanical engineering 
• Organizes and conducts site visits for the purpose of data collection and evaluation of mechanical systems, equipment, components, and materials for projects with and without well-defined scopes 
• Develops designs within a BIM design environment 
• Develops, designs, and specifies equipment, components and materials for all building 
• Coordinating with multiple disciplines and acting as mechanical engineer point of contact to ensure that coordinated projects are delivered within budget on schedule and with high quality work.  
• Assist in proposal preparation in conjunction with the senior leadership of the office 
• Manage and work on multiple projects with other team members and mentors junior staff 
• Ensures discipline plans that are created meet overall project team requirements for project scope and schedule 
• Review team member's work for quality and recognition of training requirements 
• Attend and present to owners, clients and architects as needed.

Minimum Requirements: 

• BA/BS in Mechanical Engineering, Architectural Engineering or similar field +6 years of related experience or demonstrated equivalency of experience and/or education  
• Professional Engineer (PE) registration 

Preferred Qualifications: 

• A minimum of eight (8) years of related experience or demonstrated equivalency of experience and/or education 
• Strong mechanical code knowledge including International Fuel Gas Code, ASHRAE standards, NFPA and other relevant codes and standards 
• Experience in designing complex hydronic systems, steam, VRF systems and sustainable designs. This includes cooling towers, water cooled chillers, air cooled chillers, hot water and steam boilers, geothermal systems, etc. 
• Experience in developing specification book in alignment with design and specific performance criteria 
• Instrumentation and controls design/engineering experience 
• Revit and CAD experience 
• Ability to use load calculation software such as Trace700 and other energy modeling softwares such as eQuest, IES is a plus. 
• Competent in all conventional aspects of mechanical engineering and conducts work requiring judgment in the independent evaluation, selection and substantial adaptation and modification of standard mechanical engineering techniques, procedures, and criteria. 
• Plumbing and Fire Protection system design experience 
• Medical gas piping design experience is preferred 
• Experience with sustainable design and certification or high performance buildings 
• Excellent communication skills: articulate, assertive, and confident 
• Creative thinker with effective teamwork skills 
• Analyze equipment energy use for optimizing systems selection 
• Project related travel may be required for this position 

• Hybrid work environment – Fully remote position not available.
• Sponsorship is not availble for this opportunity

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 2024. 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.