Mechanical Engineer

Liberty Personnel Services, Inc.; Washington (District of Columbia); On-site; USD 90,000 - 130,000; Full time

Job summary

Liberty Personnel Services, Inc. in Washington, DC seeks a licensed Mechanical Engineer with 5–10 years of HVAC and plumbing design experience for multifamily, commercial, and local government projects.

You will design systems, perform load calculations, and prepare construction documents in Revit, while coordinating with multidisciplinary teams and mentoring engineers-in-training to ensure quality, safety, and compliance.

Qualifications

• Professional degree in Mechanical Engineering.
• Active Mechanical PE license.
• 5–10 years of mechanical engineering design experience in HVAC and plumbing.

Responsibilities

• Design HVAC and plumbing systems, including load calculations, ventilation, equipment selection, air distribution, and hydronic systems.
• Prepare mechanical models and construction documents using Revit.
• Coordinate designs with multidisciplinary project teams.
• Provide technical guidance to engineers-in-training and designers.
• Ensure accuracy, code compliance, and quality of engineering deliverables.

Skills

HVAC design

Plumbing design

Revit

Project coordination

Education

Bachelor's degree in Mechanical Engineering

Tools

Revit

Job description

An established multidisciplinary design firm is seeking a licensed Mechanical Engineer with 5–10 years of experience in HVAC and plumbing design to join its Washington, DC team. This role focuses on multifamily residential, commercial, and local government projects.

Responsibilities

• Design HVAC and plumbing systems, including load calculations, ventilation, equipment selection, air distribution, and hydronic systems.
• Prepare mechanical models and construction documents using Revit.
• Coordinate designs with multidisciplinary project teams.
• Provide technical guidance to engineers-in-training and designers.
• Ensure accuracy, code compliance, and quality of engineering deliverables.

Qualifications

• Professional degree in Mechanical Engineering.
• Active Mechanical Professional Engineer (PE) license.
• 5–10 years of mechanical engineering design experience.