Senior Building Mechanical Engineer

Senior Building Mechanical Engineer - ( 193904 )

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.

• 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
• 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 participate in reviews with various governing agencies for code compliance
• 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
• Develop project hours to complete mechanical design documents for RFPs
• Coordinate and assist affected disciplines with project addenda, RFIs, change proposal requests, and change orders, and incorporate agreed‑upon changes into the project documents
• 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
• 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

• 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
• Ownership of assignments and ability to work both independently and as part of a large project team
• Strong motivation, strong organization, and professional initiative
• Focus on client outcomes
• Strong mentoring skills (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 and professional development seminars, courses, workshops, or conferences (approved in advance)

• Bachelor's degree in Mechanical Engineering
• A minimum of 10 years in mechanical system design of commercial or institutional buildings
• Professional engineering license recognized by the licensing board for the location of the position offered (e.g., PE or P.Eng)
• 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
• Commitment to being an active participant of our employee‑owned culture

United States-Washington-Bellevue

Full‑time

Regular

At HDR, we are committed to the principles of employment equity. We are an affirmative action and equal opportunity employer. We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.