Senior Mechanical Engineer - Building Engineering

Overview At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected. We empower authentic selves and novel ideas to work every day, fostering inclusion throughout our company and communities. Each role makes a difference in HDR’s ability to change the world for the better. We believe building engineering is about powering progress and enabling innovation. As part of HDR’s Building Engineering Services Group, you’ll help design the infrastructure that supports the digital age and shapes the spaces where people work, connect, and thrive. HDR BES brings together mechanical, electrical, structural, and civil engineering experts to solve complex design challenges with precision, creativity, and collaboration. This isn’t just a job; it’s a chance to lead innovation, engineer impact, and build a legacy of excellence. Position Senior Mechanical Engineer (to join our team) within HDR BE S group. Primary Duties Lead the work of the mechanical design team through all project phases: 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 conflicts with other 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 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 monitor construction progress and prepare field observation reports Establish meetings and participate in reviews with governing agencies for code compliance Coordinate workload, complete project assignments and deliverables on schedule Conduct virtual / on-site work sessions with other disciplines, owners, clients, contractors, and stakeholders including presentations Experience in developing project hours to complete mechanical design documents for RFPs Coordinate and assist affected disciplines with addenda, RFIs, change proposal requests, and change orders; incorporate agreed-upon changes into project documents Work with the Project Manager, Regional Controller and Regional Director for project reviews with corporate management as needed Preferred Qualifications Bachelor’s Degree in Mechanical Engineering or Architectural Engineering with Mechanical Focus Understanding of applicable design codes and specification requirements Significant experience designing complex and large-scale laboratory facilities Proficiency in Revit and Microsoft Office Experience using load calculation software, energy modeling software, and manufacturer equipment selection software Excellent organizational and communication skills Ability to work independently and as part of a large project team Strong mentoring skills; client-focused mindset Local candidate preferred Required Qualifications Bachelor’s degree in Mechanical Engineering 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 (e.g., Professional Engineer PE or P.Eng). Strong knowledge of Microsoft Office, MS Project and AutoCAD Demonstrated leadership, team coordination and project management experience Experience with architectural/engineering or engineering consulting firms Active participation in our employee-owned culture What We Believe HDR is our company. We build on diverse experiences and perspectives to enable collaboration, trust, and connection with clients and communities we serve. Our Commitment As employee owners, we create an inclusive environment where everyone is welcomed, valued, respected, and empowered to bring their 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) foster belonging and engagement; each group has an executive sponsor and is open to all employees. #LI-JC7 Location & Schedule Primary Location: United States - New York - New York Schedule: Full-time Employee Status: Regular Business Class: Building Mechanical Job Posting Posted: Mar 11, 2026 EEO Statement : HDR is an Affirmative Action and Equal Opportunity Employer. We consider all qualified applicants, regardless of criminal histories, arrest and conviction records. Ready to learn more? Let’s work together to make great things possible. We design solutions to the world’s greatest challenges and are always looking for great talent to join our global teams. #J-18808-Ljbffr