Senior Building Mechanical Engineer

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world?

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Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

We believe building engineering is more than systems and structures, it's about powering progress and enabling innovation. As part of HDR's Building Engineering Services Group, you'll help design the critical infrastructure that supports the digital age and shapes the spaces where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological advancement, sustainability, and human experience. We bring together mechanical, electrical, structural, and civil engineering experts to solve complex design challenges with precision, creativity, and collaboration. Whether you're optimizing energy efficiency, integrating resilient systems, or engineering the backbone of next-generation facilities, your contributions will help define the future of the built environment. This isn't just a job, it's a chance to lead innovation, engineer impact, and build a legacy of excellence.

In the role of Senior Building Mechanical Engineer, we'll count on you to:

• Lead the work of the mechanical design team throughout all project phases ranging from feasibility studies, programming, conceptual design, schematic design, construction documents, construction administration, commissioning, and project close-out

• Write and edit mechanical specifications to fit project requirements

• Review mechanical documents for areas of conflict with all disciplines

• Understand fan and pump curves to properly select equipment for different applications

• Ability to perform psychrometric calculations for analyzing and selecting HVAC systems and equipment

• Develop sections and elevations for complex ductwork and piping areas

• Develop air and water flow diagrams

• Coordinate HVAC system control requirements and intended modes of operation with controls engineers to develop control diagrams, point lists, and sequences of operation

• Visit project sites as requested to verify existing conditions or as contractually required to monitor construction progress and prepare field observation reports

• Establish meetings and participates in reviews with various governing agencies for code compliance

• Responsible to coordinate workload, complete project assignments and deliverables on schedule

• Conduct virtual / on-site work sessions for projects in conjunction with other disciplines, owners, clients, contractors, and other project stakeholders including presentations, etc.

• Experience in developing project hours to complete mechanical design documents for RFP's

• Coordinate and assist affected disciplines with project addenda, RFIs, change proposal requests, and change orders, and take responsibility to incorporate agreed-upon changes into the project documents

• Develop plumbing riser diagrams

• Perform plumbing calculations (Storm, drainage and supply fixture units)

• Size equipment and plumbing piping (pumps, water heater, drainage pipes, natural gas piping, valves, etc)

• Develop and edit Masterspec specifications to be project specific. This includes taking raw specifications and/or developing specifications from basis of design manufacturer's.

• Work with the Project Manager, Regional Controller and Regional Director for project reviews with corporate management as needed

• Actively participate in the education of inexperienced engineers.

• Other duties as required

Preferred Qualifications:

• Bachelor's Degree in Mechanical Engineering or Bachelor's Degree in Architectural Engineering with Mechanical Focus
• Understanding of applicable design codes and specification requirements
• Significant experience designing complex and large-scale laboratory and healthcare facilities and/or data centers
• Proficiency in Revit and Microsoft Office
• Experience using load calculation software, energy modeling software, and manufacturer equipment selection software
• Excellent organizational and communication skills
• Take ownership of assignments and work both independently and as part of a large project team
• Strongly motivated, well organized, and showing professional initiative
• Focused on client outcomes
• Candidate with strong mentoring skills is highly preferred
• Knowledge of Building Codes in Washington State and how to obtain building codes from other states.
• Knowledge of Plumbing and HVAC Fundamentals and Design.
• Previous experience with an A/E/C firm
• Active participation in industry organizations is encouraged. Participation in professional development seminars, courses, workshops, or conferences is encouraged and should be approved in advance of attendance.

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Required Qualifications

• Bachelor's degree in Mechanical Engineering

• A minimum of 10 years in mechanical system design of commercial or institutional buildings

• Requires professional engineering license recognized by the licensing board for the location of the position offered. Example: Professional Engineer (PE or P.Eng) license.

• Strong knowledge of Microsoft Office, MS Project and AutoCAD

• Demonstrated leadership skills, previous team coordination and project management experience

• Previous experience with an architectural/engineering or engineering consulting firm

• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe

HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment

As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ , People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.