Senior Mechanical Engineer
HDR
Senior 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?
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 Mechanical Engineer, we'll count on you to:
- Coordinate the work of mechanical engineers with the balance of a multidiscipline team throughout the entire project's development
- Establish client relations, and participate in marketing, design and production meetings with regard to mechanical systems
- Assume the mechanical lead on many projects
- Participate in reviews with various governing agencies for code compliance
- Conduct schematic, design development and contract document work sessions at project sites in conjunction with the Project Manager, Project Architect and other disciplines
- Coordinate workload through the entire project development to complete documents on schedule
- Track the financial aspects of projects, and coordinate and adjust the work efforts with the team to ensure that work is completed within the parameters of the agreed-upon schedule
- Work with the Project Manager, Regional Controller and Regional Director for project reviews with corporate management as needed
- Perform other duties as needed
Preferred Qualifications
- Computer experience utilizing MS Office, IESVE, Trane TRACE, or similar manufacturer selection software
- Revit MEP experience preferred
- Commercial/institutional experience in healthcare, technology/data centers, and/or water-wastewater preferred
- Master's degree or other advanced degree in Mechanical Engineering or Architectural Engineering with mechanical emphasis
- Experience and/or interest in sustainable design, LEED, desired but not required
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.
- DescriptionThe Senior Mechanical Engineer will lead mechanical design projects and teams to create world-class designs for new projects, alterations and redevelopments within the Life Sciences industry (Pharmaceutical and Biotech). The Senior Mechanical Engineer will lead...SeniorFor contractorsWork at office
- ...Senior Mechanical Engineer We are seeking a highly skilled Senior Mechanical Engineer to join our dynamic engineering team. The ideal candidate will be responsible for leading design and development projects, utilizing advanced engineering principles to create innovative...Senior
- ...Founded in 1975, BR+A Consulting Engineers maintains a total staff of over 500 employees... ...state-of-the-art integrated and coordinated mechanical, electrical, plumbing and fire... ...services. BR+A is seeking an experienced Senior Mechanical Engineer in our St. Louis, MO...SeniorFull timeFor contractorsWork at office
- ...Senior Mechanical Engineer Job Description Job Information Job Title Senior Mechanical Engineer Reports To Director of Engineering Location St. Louis, MO Number of Direct Reports 0 About...SeniorFor contractorsWork at officeFlexible hours
- DescriptionBurns & McDonnell is seeking to hire a Senior Mechanical Engineer to support our Power global practice. The Senior Mechanical Engineer will lead mechanical design project teams to create world class designs for both new and existing power generation facilities...SeniorFor contractorsWork at office
$146.4k - $219.6k
...Posted Wednesday August 19th, 2026 at 9:46 AM | Expires Thursday, December 31st, 2026 at 12:59 AM Position Summary: A Senior Mechanical Engineer in our Mission Critical practice will have the opportunity to design the most complex advanced building systems, prepares...SeniorFor contractorsCasual workWork at officeFlexible hours- ...Mechanical Senior Project ManagerMechanical Senior Project Manager needed ASAP for a well-respected, growing mechanical contractor in the area! Come work for a company that has many years of proven excellence, great compensation and benefits that shows no signs of slowing...SeniorFor contractorsImmediate start
- ...Senior Mechanical Project ManagerA regionally recognized mechanical construction and facilities services firm is seeking an experienced Senior... ...HVAC, plumbing, piping, controls/building automation, engineering services, and prefabrication support. Projects include healthcare...SeniorContract workFor contractorsFor subcontractor
- ...Senior Mechanical Engineer Symbiotic Services is seeking a Senior Mechanical Engineer to support complex industrial and commercial projects within a design-build environment. This role combines technical design expertise with project execution. Core Focus Lead mechanical...Senior
- ...Job Type Full-time Description As a Sr. Mechanical Engineer, you will play a critical role in designing and implementing complex industrial process systems or power utility systems. Your expertise in areas such as high energy piping systems and steam turbines...SeniorPermanent employmentFull timeTemporary workWork at office
- Sr. Mechanical Engineer Saint Louis, MO Full-time Description As a Mechanical Engineer, you will play a critical role in designing and implementing complex industrial process systems or power utility systems. You will have advanced skills in the following areas: problem...SeniorPermanent employmentFull timeTemporary workFor contractorsWork experience placementH1bWork at office
- Job DescriptionThe Senior Building Mechanical (HVAC) Engineering role takes on more complex projects and leads the development of HVAC, plumbing, and fire sprinkler calculations. The role interprets mechanical, plumbing, building, and fire codes, as well as NFPA standards...SeniorFull timeTemporary workRemote work
$181.9k - $246.1k
...professional growth. Find your future with us. Boeing Defense, Space & Security (BDS) Air Dominance (AD) division is seeking a Senior Systems Engineering Manager (Level L) to join our team in support of the MQ-25 Program in Berkeley, MO or Patuxent River, MD ....SeniorPermanent employmentInterim roleRelocationVisa sponsorshipWork visaFlexible hoursShift workDay shift- ...Mechanical Engineer Responsible for supporting regional capital investment projects in the Americas Region, specifically at our site in Idaho. Shares ownership with other team members for successful project outcomes. Ensure compliance with industry and Bayer engineering...
- ...across 40+ companies work together to deliver exceptional HVAC, mechanical, plumbing, refrigeration, and electrical solutions nationwide... ...related field B.S. in Construction Management, Mechanical Engineering (or related field) is a plus Knowledge of HVAC and Piping...SeniorContract workWork experience placementFor subcontractorLocal areaFlexible hoursWeekend work
- ...sounds like you, then you should mull over a career with Mullins Mechanical. We are looking for an experienced Project Manager to join... ...in project management or BS/BA degree in Building Science, Engineering, Construction Management, or another related field PMP,...SeniorContract workFor contractorsWork experience placementFor subcontractorRelocation
- ...Our Process-Mechanical Engineer position offers an exciting opportunity for the selected candidate to be part of Donohue & Associates, a firm with national water/wastewater expertise in a small company environment. We are seeking an experienced engineer who can work with...Temporary workFlexible hours
- ...Description This individual will provide project management and mechanical (HVAC) design services on a variety of building projects.... ...candidate will have a degree in Architectural or Mechanical Engineering, Professional Registration, and at least 5 or more years of...SeniorCasual workFlexible hours
- ...Mechanical Engineer IThe Mechanical Engineer I is responsible for the design, development, documentation, test, and evaluation activities for components, sub-assemblies, and finished goods products that meet the cost, performance and timeliness requirements defined within...Work at office
$40 - $90 per hour
...Job Title: Mechanical Engineer Job Description This role focuses on delivering high-quality mechanical engineering solutions for nuclear power plant projects by analyzing complex problems, developing effective designs, and overseeing the full lifecycle of engineering...Contract workTemporary workWork experience placementWork at officeRemote workWork from homeFlexible hours- ...structures, we're helping our clients innovate and grow by designing, engineering, and executing the construction of state-of-the-art... ...Developing HVAC and plant utility systems philosophies. ?Developing mechanical / utility equipment and construction specifications. ?...Civilian Contractor
- ...Mechanical Engineer Position Elessent Clean Technologies is a global leader in process technologies to drive sustainability and carbon neutrality in the metal, fertilizer, chemical, and oil refining industries with an unwavering commitment to customer support. We provide...
- ...Job Description Growing national firm is seeking a Process-Mechanical Engineer for their St. Louis office! Responsibilities: Plan/design water and wastewater systems (pumping, process and mechanical piping, and related valves and process equipment) Deliverquality...Work at office
$100k - $145k
...a focus on client success and partnerships that are important to our communities and our environment. A Day in Life of a Mechanical Engineer at Hanson Here's a snapshot of what you would do in this role: Design, analyze, and optimize HVAC systems for government...For contractorsInternshipWork at office- ...Entry-Level Mechanical Engineer The Entry-Level Mechanical Engineer will support the mechanical design of mission-critical facilities, including... ...with miscellaneous design tasks under the supervision of senior staff. Coordinate with other disciplines including civil,...For contractorsInternshipFlexible hours
$84.53k - $120.75k
...ourselves: What is our impact on the world? We believe building engineering is more than systems and structures, it's about powering... ..., sustainability, and human experience. We bring together mechanical, electrical, structural, and civil engineering experts to solve...Full timeContract workTemporary workPart time- ...POSITION TITLE: ENGINEER I REPORTS TO: ENGINEERING MANAGER Position Summary:... ...development and honing applications Mechanical Emphasis Position As directed, design... ...improve product value with guidance from senior level advisement As appropriate, create...Work at office
$75k - $90k
...Mechanical Engineer II Location: Schaumburg, IL / Albuquerque, NM / Avon, CO / Hunt Valley, MD / Belleville, IL / Boise, ID / Chicago, IL / Corona, CA / Dallas, TX / Davenport, IA / Lakewood, CO / Evansville, IN / Ft. Collins, CO / Ft. Myers, FL / Irvine, CA / Milwaukee...Flexible hours- ...Job Description: Intermediate Mechanical Engineer You will be responsible for the development of engineering concepts and designs for heavy industrial projects. You will provide technical leadership in advancing project objectives, collaborate within multidisciplinary...Visa sponsorshipRelocation package
- ...Sr. Process Engineer Deli Star is a next-generation food manufacturing company with a... ...Creativity. The Sr. Process Engineer is a senior operational leader responsible for the... ...metrics monthly. Facility and Mechanical Leadership Lead the Facility Maintenance...SeniorFor contractorsWork at office
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Mechanical Engineer. Be the first to apply!
- senior operations technician Saint Louis, MO
- senior cloud service delivery manager Saint Louis, MO
- senior project engineer Saint Louis, MO
- sr operations manager Saint Louis, MO
- senior account director Saint Louis, MO
- senior director clinical development Saint Louis, MO
- sr accountant Saint Louis, MO
- senior financial analyst remote Saint Louis, MO
- senior estimator Saint Louis, MO
- senior designer Saint Louis, MO

