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? Watch Our Story: '' 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. HDR is looking for a Mechanical Engineer to join our Building Engineering Services Business Group in the Walnut Creek or Folsom, CA office. This individual will be responsible for the mechanical (HVAC and plumbing) design of facilities in support of a variety of markets including Technology, Corporate/Commercial, Education, Healthcare, Water/Wastewater, Municipal, Industrial, Power, and Federal. They will be expected to coordinate and work closely with a multidiscipline design team throughout the entire lifecycle of projects from planning stages, through the development of construction documents, and construction administration. They will be responsible for the development of construction drawings, specifications, and supporting engineering calculations, as well as the review of shop drawings during construction. Experience in HVAC and plumbing design of building‑related projects is required. This individual should be self‑motivated, collaborative and possess strong leadership skills with an initiative to deliver high quality, technically sound engineering designs. In the role of Mechanical Engineer, we'll count on you to: Assume the mechanical lead and be the Mechanical and/or Plumbing Designer of Record (DOR) on small to mid‑sized Data Center Projects, Federal Projects, and Water/Wastewater Projects. Coordinate the work of the mechanical design team through the schematic design development and contract document phase of a project. Establish client relations, and participate in the marketing, design and production meetings with regard to mechanical systems. Establish meetings and participate in reviews with various governing agencies for code compliance. Coordinate workload to complete the documents on schedule. Conduct work sessions at the project site in conjunction with the Project Manager and other disciplines. Review mechanical and plumbing documents for areas of conflict with all disciplines. Write and edit mechanical and plumbing specifications and select mechanical and plumbing equipment, systems, and devices. Coordinate with and assist affected disciplines with addenda, RFIs, CPRs and change orders, and take responsibility to incorporate agreed‑upon changes into the project documents. Provide construction contract administration as needed. Conduct QA/QC on the work of other Mechanical Project Engineers, Mechanical Project Coordinators/EITs, or Mechanical CAD/BIM Technicians as needed. Give direction to clerical and technical personnel as needed. Perform other duties as needed. Preferred Qualifications California Mechanical Licensed Professional Engineer (PE) Master's degree in Mechanical Engineering Minimum four (4) years' experience in mechanical and plumbing system design for federal, commercial and/or institutional facilities; experience in Data Center facility design and/or construction Water/Wastewater, Science and Technology, Hospitality, and/or Finance facilities experience Proficiency in MS Office, AutoCAD, Revit, IESVE, Trane Trace3D, or similar software Experience in sustainable design/LEED desired, but not required Project Management experience In‑person office culture Preference given to local candidates Required Qualifications Bachelor's degree in Mechanical Engineering Previous experience 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. Experience in commercial or institutional facilities Computer experience using MS Office, Trane TRACE or similar software, manufacturer selection software 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. We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long‑term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. Stated benefits are for full‑time regular positions. The expected compensation range for this position is $88,550.00 - $143,750.00 annually depending upon skills, experience, education and geographical location. Location: United States, California – Folsom and Walnut Creek Industry: Building Engineering Schedule: Full‑time Employee Status: Regular Business Class: Building Mechanical Job Posting: April 3, 2026 #J-18808-Ljbffr HDR, Inc.