Principal Mechanical Engineer

Overview

Interface Engineering is seeking a Principal / Senior Mechanical Design Engineer to serve as a discipline leader on complex building projects, with a strong emphasis on healthcare environments and high-performance HVAC systems. In this role, you’ll take ownership of mechanical design delivery from early planning through construction, provide Engineer of Record (EOR) oversight, mentor and elevate a team of engineers/designers, and partner closely with clients to deliver compliant, constructible solutions—especially within HCAI/OSHPD-regulated healthcare work.

This is a leadership role for someone who blends deep technical capability with client-facing confidence, strong project execution, and the ability to guide teams across multiple concurrent projects.

What You’ll Do

• Lead mechanical/HVAC design for building projects with a heavy focus on healthcare, including inpatient/outpatient, acute care, surgical, imaging, and specialty spaces, as well as select commercial and education work.
• Provide EOR oversight for mechanical drawings, calculations, specifications, and engineering narratives.
• Drive HVAC system design including (as applicable) air distribution, hydronic systems, central plant coordination, pressurization strategies, filtration/infection control considerations, and redundancy/reliability planning.
• Ensure designs meet HCAI/OSHPD requirements, applicable building/mechanical codes, and relevant healthcare guidelines/standards.
• Partner with internal and external teams (architects, electrical/plumbing engineers, owners, contractors) to coordinate systems and resolve technical challenges.
• Mentor, coach, and develop mechanical engineers and designers; provide quality control and set technical standards for the discipline.
• Support project management needs including scope clarity, scheduling, workload planning, and delivery accountability across multiple projects.
• Provide construction administration: submittal/RFI review, site observations, field issue resolution, and support through commissioning/turnover.
• Deliver high-touch client service and contribute to growth by deepening relationships with existing clients and supporting business development efforts.

What You’ll Bring

Required

• BS in Mechanical Engineering (BSME)
• 10+ years of experience in MEP mechanical design/consulting for buildings
• Demonstrated leadership experience: mentoring, managing, or guiding a mechanical team
• Strong project management experience in the MEP space
• Proven background in healthcare building design and HCAI/OSHPD compliance
• High-energy, polished client service and relationship-building skills
• Excellent communication and stakeholder management (internal + external)
• Strong command of building codes, mechanical standards, and best practices
• Deep knowledge of HVAC design and building mechanical systems

Preferred

• 10–15 years of progressive leadership in the commercial A/E engineering field
• Advanced HVAC expertise across healthcare, education, and complex commercial facilities
• Strong working knowledge of industry codes/standards relevant to healthcare and HVAC system design

Job Type

Job Type: Full-time

Pay

Pay: $146,000.00 - $200,000.00 per year

Benefits

• 401(k)
• Dental insurance
• Employee assistance program
• Flexible schedule
• Health insurance
• Paid time off
• Relocation assistance
• Retirement plan

Work Location

Work Location: In person