Mechanical Engineer
 Saint Louis, MO

CannonDesign has an exciting opportunity for a Mechanical Engineer based in our St. Louis office. If your skills and experience are a match for the position described below, we’d love to hear from you.


We are an integrated global design firm that unites a diverse team of architects, engineers, constructors, builders, strategists, researchers, and industry specialists driven by a singular goal – to help solve our clients' and society's greatest challenges.


The successful candidate will be a member of our multi-disciplinary team and responsible for interfacing with project teams, equipment suppliers, consultants and clients. 


  • Perform designs of ductwork, piping, equipment selection for HVAC systems or plumbing, fire protection systems for building design, independently for smaller/less technical projects; supervision of senior engineer for complex projects.

  • Calculate heating and cooling loads, layout and design ductwork and piping using computer software.

  • Prepare CAD production drawings of HVAC systems from schematic to construction design phases with the support of dedicated technical staff as needed.

  • Prepare and edit specifications relating to existing or new projects.

  • Specify mechanical, equipment such as boilers, chillers, and air handling units.

  • Review submittals and shop drawings for compliance of specifications and contract documents. Participate or lead value engineering sessions with Architectural/Engineering team. 


  • Qualified candidates must have a Bachelor of Science in Mechanical Engineering or Bachelor of Architectural Engineering (Mechanical Systems focus).

  • Minimum of 4 years of related experience required. 

  • EIT or PE preferred.

  • Familiarity with Revit, Trane Trace, or similar platforms preferred.

  • Excellent written & verbal communication skills are essential.

  • Site visits frequently require a physical walk through of site and may be done independently. 


  • We are relentless in our pursuit of client adoration (not simply satisfaction). Consistent delivery of the best service is what we are about

  • We know you have a life outside of the office. That’s why we offer the convenience of flexible scheduling, including the ability to work remotely on occasion

  • We are committed to ensuring our practice is equitable for all employees, representative of the communities around us – and focused on the future of design We advocate for equity, diversity and inclusion efforts through the leadership of our Diversity + Inclusion Council, Women’s Forum, and other community advocacy initiatives

  • We’re about communication and transparency here. If you want to talk to someone about an idea you have, or a challenge that needs addressing, we’re ready for you.

  • The NEXT Council is a group of dynamic, multi-faceted employees that collaborates closely with firm leadership. Together, council members act as a catalyst for our practice’s evolution – a think tank for innovation, improvement and growth.

Please note that candidates can only apply to our positions on our company Careers site. It's not uncommon for scammers to create positions that look legitimate on other sites; never enter your information or apply for CannonDesign positions on any platform. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume and portfolio when applying.

As a condition of employment, all employees are expected to complete mandatory training, including compliance training, within required timeframes and adhere to our internal policies and our Code of Conduct.

CannonDesign recognizes the value of diversity in our workforce. We are committed to equal opportunity. We consider all qualified employment applicants without regard to race, religion, color, gender, age, national origin, sexual orientation, gender identity, partnership status, protected veteran status, disability, or any other status protected by federal, state, or local law. Individuals who hold legal work authorization applicable to employment at CannonDesign in the United States will be considered without regard to citizenship/alienage.