Sr Mechanical Engineer

Senior Mechanical Engineer – Bay Area Buildings + Places

Are you ready to lead the mechanical design of high-performance buildings that shape communities and critical infrastructure? AECOM’s Bay Area 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 the Oakland or San Francisco office. We seek 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.

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.

• 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.

• 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.

• Mentor and guide junior engineers and designers, fostering technical growth, confidence, and professional development.
• Have the desire and ability to develop and grow our mechanical engineering team.
• Review team members’ work for technical accuracy, consistency, and quality, providing constructive, growth-oriented feedback.
• Identify skill gaps and support the development of targeted training and knowledge‑sharing initiatives.
• Contribute to a collaborative, inclusive team culture that values accountability, learning, and excellence.
• Establish yourself as a trusted technical leader and mentor within the Northern California B+P team and a subject matter expert within AECOM's overall US Practice.

• Support proposal development and pursuit efforts by contributing technical narratives, scope development, and fee input.
• Prepare technical reports and documentation for internal and external stakeholders.
• Collaborate with office leadership to advance best practices and support the long‑term success of the mechanical discipline.
• Connect with other subject matter experts throughout the US and contribute to the technical excellence of AECOM's global practice.

In your first year, you will:

• Successfully lead multiple mechanical design efforts with clear wins in quality, coordination, and client satisfaction.
• Establish yourself as a trusted technical leader and mentor within the Bay Area B+P team.
• Contribute to the delivery of high‑performance, energy‑efficient buildings across diverse market sectors.
• Strengthen consistency, clarity, and technical rigor across mechanical deliverables.

• Bachelor’s degree in Mechanical Engineering from an accredited program.
• 6+ years of relevant mechanical engineering experience or demonstrated equivalency of education and experience.
• Professional Engineer…