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Senior Mechanical Engineer

Permanent Hybrid — 4 days on site, Friday from home Chicago, IL or Sacramento, San Diego or San Francisco, CA $104,953 – $152,430 per year, DOE

Role specification

Reference
FGX-2001
Discipline
Mechanical Engineering
Sector
MEP / Building Systems
Contract
Permanent
Working
Hybrid — 4 days on site, Friday from home
Location
Chicago, IL or Sacramento, San Diego or San Francisco, CA
Salary
$104,953 – $152,430 per year, DOE
Openings
2
Posted
2026-08-19

About the role

FireFly GX is recruiting two Senior Mechanical Engineers on behalf of a long-established MEP and building systems consultancy working on landmark projects across healthcare, mission critical, science and technology, and commercial sectors. The client is flexible across four offices — Chicago, Sacramento, San Diego and San Francisco — so this is worth a conversation wherever you are among them. You'll design major healthcare projects across inpatient and outpatient settings, at a level where you're providing technical leadership rather than working to someone else's drawings.

What you'll do

  • Represent the practice in dealings with clients, contractors, architects and the wider project team
  • Design large mechanical projects and prepare the supporting reports and specifications
  • Develop sustainable mechanical solutions, from concept through to detailed drawings
  • Oversee drawing production against client requirements and standards
  • Establish design standards, specifications and project criteria
  • Produce due diligence reports, gap analyses and feasibility studies
  • Prepare proposals and administer project contracts, including additional service agreements
  • Set project budgets and schedules, and participate in QA/QC of the team's completed work
  • Manage and review staff resource allocation

Key skills

  • Bachelor's degree in Mechanical Engineering from an accredited university
  • Minimum 8 years' experience within a consulting firm
  • 3+ years in a supervisory or project management capacity
  • Current PE registration as a Mechanical Engineer — required, not in progress
  • Working knowledge of AutoCAD and Revit
  • Strong ability to coordinate mechanical systems with architectural, structural, electrical and telecom, including constructability and cost
  • A stable, consistent employment track record

Also useful

  • LEED AP accreditation — highly preferred
  • Healthcare design experience across inpatient and outpatient facilities
  • Capability across mission critical, life science and R&D building types
  • Science and technology or project management background

What's on offer

  • Medical, dental, vision, life insurance and supplemental benefit plans
  • 401(k) with a generous employer match
  • Training, professional development courses and development incentive bonuses
  • Competitive paid time off, plus a transit or parking stipend
  • Monday to Thursday in the office, Fridays worked from home
  • A national team of over 100 engineers to draw expertise from
Mechanical HVAC Revit PE MEP Healthcare