We are seeking a Principal Mechanical Engineer to join a growing engineering team supporting complex, highly secure federal and mission-critical projects. This is a senior-level opportunity for an experienced mechanical engineer who can take ownership of projects, provide technical direction, and help deliver challenging facilities from design through completion.

What You’ll Be Doing

• Lead mechanical engineering and HVAC design for complex building projects
• Develop and review mechanical systems, calculations, layouts, specifications, and construction documents
• Provide technical direction and mentorship to junior and mid-level engineers
• Work through design challenges and help develop practical solutions for clients
• Review drawings, specifications, and engineering documents for quality and accuracy
• Participate in project meetings and communicate directly with clients, architects, contractors, and other project team members
• Support projects from early design through construction
• Help manage technical scope, schedules, budgets, and deliverables
• Work on projects with strict security, performance, and technical requirements
• Contribute to proposals and other business development efforts as needed

What We’re Looking For

• Federal project experience required
• 10+ years of experience as a Mechanical Engineer
• Bachelor’s degree in Mechanical Engineering or a related field
• Professional Engineer (PE) license strongly preferred
• Experience designing HVAC and mechanical building systems
• Experience with government, defense, secure, or mission-critical facilities is highly desirable
• Strong understanding of applicable mechanical codes and standards
• Experience reviewing and producing construction documents
• Ability to lead technical work and mentor less-experienced engineers
• Strong communication and problem-solving skills
• Experience with Revit, AutoCAD, or other engineering/design software