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Senior Mechanical Design Engineer

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Onsite

Senior Mechanical Design Engineer

Murphy Company

Senior Mechanical Design Engineer

2 months ago

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Important information


Contract type:

Permanent

Salary:

$145,000 – $150,000 / year

Location:

St. Louis, MO, USA

Work mode:

Onsite

Published on:

11 September 2026

What they need


Senior Mechanical Engineer

About Murphy Company

Since 1907, Murphy Company has been a leading mechanical contractor in the St. Louis and Denver markets that provides its professionals the environment, opportunities, technology, and tools to experience a rewarding career. Being a company that prides itself on its core values of employee well-being, enduring relationships, and integrity and professionalism, we know it starts with our employees. We strongly believe our people are our most important asset, and we strive every day to make Murphy a great place to work as we build our clients’ visions.

We Are Looking For Someone Like You

Murphy Company is currently seeking a Senior Mechanical Engineer or Designer to work in a Design-Build and Design-Assist environment in the St. Louis, MO office. This group consists of construction-minded colleagues who are flexible and well-versed in concepts and systems. This group works closely with the sales, estimating, and construction groups in addition to the primary engineering design duties. The Murphy Engineering staff focuses on a wide variety of commercial, institutional and industrial applications to support our current work program.

Bring Your A-Game!

  • 10 years' experience or equivalent in facilities design, in markets such as healthcare, higher education, or commercial.
  • Thorough knowledge of building codes.
  • Competent in REVIT & AutoCAD.
  • Desire and Interest to support the built environment.
  • Self-starter who works well with others and likes being challenged
  • Able to plan, prioritize, organize and manage responsibilities on multiple projects

Additional Desirable Qualifications

  • BS in Mechanical Engineering, or equivalent technical degree
  • P.E. Licensure
  • Estimating experience a plus
  • Construction experience a plus

Potential Duties/Responsibilities

  • Capable of researching, reviewing, and developing design criteria for variety of facilities
  • Controls interaction and experience in developing sequence of operations
  • Interact with building owners, property management, architects, and members of construction team
  • Excellent organizational, technical, communication (both written and verbal), and documentation skills and be capable of working in a team environment
  • Advanced knowledge of mechanical equipment and systems.
  • Ability to professionally present technical issues to clients, receive feedback, and collaboratively develop solutions
  • Assist Estimating and Pre-Construction groups to provide construction proposals.
  • Define system requirements and equipment selections for design-build work
  • Competent in various industry calculation and simulation programs (Trane Trace 700 or Carrier HAP)
  • Generate plans and coordinate with other trades
  • Ensure designs meet all applicable codes and safety standards
  • Mechanical Design assignments including HVAC (air and waterside), Medical/Lab Gasses, and Process System layout and sizing
  • Prepare and approve shop drawing submittals from vendors
  • Develop and maintain CAD/BIM standards and details

Industries Served

Commercial

Healthcare

Higher Education

Bio-Pharmaceutical

Laboratory & Clean Spaces

Food and Beverage

Light Industrial

Manufacturing

Heavy Mechanical Retrofit

What We Will Bring to the Table

  • A collaborative, family-friendly work environment
  • Knowledge and expertise that have helped us grow and thrive for nearly 120 years
  • Competitive pay and an excellent benefits package, including health and life insurance, a robust wellness program, 401(k), and profit sharing.
  • A personal time off plan that rivals our competitors

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