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Senior Mechanical Engineer

Job in Chicago, Cook County, Illinois, 60290, USA
Listing for: Salas O'Brien
Full Time position
Listed on 2026-09-12
Job specializations:
  • Engineering
    Mechanical Engineer, Building Services Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 120000 USD Yearly USD 120000.00 YEAR
Job Description & How to Apply Below

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.

Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career—and they’ll receive great total rewards along the way.

About Us

Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary

The Senior Mechanical Engineer serves to work in a fast-paced multi-discipline team environment. The position responsibilities primarily are focused on the design of mechanical systems for new facilities, additions, and renovation projects. This will require providing technical leadership for the creation of construction drawings and specifications, existing system studies and master planning efforts. Qualified candidates will meet with clients, project teams, code officials, contractors, and others to address mechanical issues to develop effective working relationships.

The project clientele includes High-Rise, Commercial, Health Care, Higher Education, Mixed-Use, Science and Technology and Data Centers.

In This Role, You Will

  • Develop and lead the design of HVAC system of a given project based on scope of work and/or client RFPs
  • Provide engineering design, evaluation, and planning of mechanical systems for a variety of building types
  • Perform Load calculations with software such as Trace 700/3D, IES and similar programs
  • Conduct existing building surveys and documentation of existing HVAC systems
  • Develop system design calculations and selection of equipment for use in buildings
  • Write/edit project specifications
  • Prepare detailed design documents, reports, and studies
  • Complete code compliance research
  • Coordinate work with other disciplines
  • Provide construction administration services
  • Perform QA/QC of design work
  • Mentor and develop junior engineers and designers
  • Lead project teams and serve as the primary contact for clients
  • Assist in the procurement of new work, including the development of client relations and participation in project interviews

You Will Be a Great Fit If

  • You have a bachelor’s degree in mechanical engineering or Architectural Engineering with mechanical emphasis
  • You possess Professional Engineer (PE) license
  • You have a minimum of 8 years of design experience
  • You have a minimum of 2 years of project management experience (preferred)
  • You have knowledge in the design of HVAC systems
  • You have knowledge and understanding of codes, standards, and design guidelines

Skills/abilities

  • Excellent work ethic and attitude
  • Good…
Position Requirements
10+ Years work experience
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