Senior Mechanical Engineer / Designer

Allen + Shariff Corporation

Apply to this job
Chicago, Illinois, US on site Until 9/28/2026 10+ years exp First posted July 30, 2026 Last posted July 30, 2026
Job description

Allen & Shariff is an international MEP engineering firm providing consulting and design services in the United States and Mexico, and project management services in the Middle East. Our mission is to engineer an exceptional level of personal care and connection designed to help our clients, employees, and communities thrive. We have fun at work doing what we love to do and are proud to be certified as a “Great Place to Work.”

A+S is seeking a Senior Mechanical Engineer or Designer to join our growing Chicago team. The Senior Engineer/Designer will work independently on multiple concurrent projects, both in design and construction, and be responsible for the preparation of contract documents and specifications for complex building systems. This encompasses advanced calculations, systems analysis, quality control of finished projects, and field/construction coordination activities.

Responsibilities

  • Perform full design of HVAC systems, including full equipment selection, for medium to large commercial projects
  • Analyze system options and evaluate existing systems where appropriate.
  • Coordinate all aspects of project document completion within A+S and externally with clients.
  • Complete full design in accordance with code. Production is performed using AutoCAD & Revit depending on preference of architect.
  • Write specifications.
  • Provide bid and construction phase services including reviewing bids, answering RFIs, reviewing shop drawings, participating in project walk-throughs, and providing field observation reports.
  • Must be proficient in a variety of HVAC systems and shall be considered a technical expert and resource to the office.

Requirements

  • Bachelor’s degree in Mechanical Engineering (or Architectural Engineering with a Mechanical focus)
  • At least 10 years of relevant experience
  • AutoCAD & Revit proficient
  • PE preferred

#LI-Onsite

Benefits

  • Bonus Pay
  • Generous Paid Time Off
  • Employee Referral Program
  • Medical Insurance
  • Flexible Spending Account
  • Company contribution to Health Savings Account
  • Employee Assistance Program
  • Wellness Reimbursement Plan
  • Dental Insurance
  • Vision Insurance
  • Life Insurance
  • Short & Long-Term Disability Insurance
  • 401(k) Plan with Company Match
  • Tuition Reimbursement Program
  • Professional Development Assistance
  • Paid Pregnancy Leave
  • Paid Parental Leave
  • Paid Community Service Leave
About this role

Summary

Designs HVAC systems for commercial projects, analyzes systems, prepares documents, and coordinates construction.

Job title

Senior Mechanical Engineer / Designer

Experience level

10+ years

Minimum experience

10+ years exp

Industry

mechanical engineering

Location requirements

Onsite in Chicago, Illinois, United States, no remote work allowed

Salary

Not specified

Management role

No

Skills & keywords

Required skills

autoCADrevithvac

Preferred skills

pe

Specializations

HVACbuilding systemsAutoCADRevit
Locations

Structured locations inferred from the posting.

Chicago, IL, USA

On-site City