Senior Mechanical Engineer

Haag, a Salas O'Brien CompanyChicago, IL
$120,000Hybrid

About The Position

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. 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.

Requirements

  • 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 knowledge in the design of HVAC systems
  • You have knowledge and understanding of codes, standards, and design guidelines
  • Excellent work ethic and attitude
  • Good communication skills, combined with organizational skills, the ability to plan, balance and prioritize work
  • Ability to lead a team and work as a team
  • Proficiency in Auto CAD, Revit, and MS Office
  • Ability to travel

Nice To Haves

  • You have a minimum of 2 years of project management experience

Responsibilities

  • 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

Benefits

  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Paid time off and company holidays
  • Wellness programs and employee assistance resources
  • Professional development support
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service