Associate Principal / Senior Mechanical Design Engineer

Join a People-First, Employee-Owned Firm That’s Redefining Flexibility and Growth Associate Principal / Senior Mechanical Design Engineer (MEP) – Chicago, IL (Hybrid) Interface Engineering Inc. At Interface Engineering, we believe your career should be as dynamic and rewarding as the projects you support. As a 100% employee-owned firm, we’re proud to offer our Collaboration from Home policy—giving you the flexibility of a hybrid schedule (2 days in-office per week minimum) while staying connected to a team that values innovation, inclusion, and impact.

Why Interface? We are not just engineers—we are collaborators, mentors, and trailblazers in high-performance design. Our Pathway to Leadership program offers a transparent, personalized roadmap for career advancement, empowering you to grow in the direction that excites you most. Our Culture Interface has the company culture and work environment you have been seeking!

You will find a workplace with a culture of fun, and superior work/life balance benefits, expansive personal development opportunities, innovative technology, and great relationships. You will work alongside MEP industry leaders who will help you develop your own thriving career path. Our work takes us around the globe and on a steady growth curve.

Our success and innovation are powered by people like you! Our Core Values: Our core values capture the essence of who we are. We live and breathe them, and they inform everything we do. We are: Conscientious. Empowered. Respectful. Resilient. Transformative.

Key Responsibilities

As an Associate Principal / Senior Mechanical Design Engineer at Interface, you will be taking ownership as a discipline leader on multiple projects. Your duties will include, but may not be limited to: Build and lead local MEP design teams. Develop and maintain a book of local clients (architects and owners). HVAC system selection, engineering & design.

Preparation of HVAC drawings, analysis, specifications, and calculations. Demonstrate excellent communication skills. Provide oversight of HVAC support staff. Provide construction administration & site observations related to your projects. Provide exemplary service to team members and clients.

What You'll Bring

Required BSME 10+ years' experience in MEP design/consulting Team leadership/management experience Project Management Experience in the MEP space High-energy client services skills Excellent communication ability Complete understanding of building codes Thorough design system knowledge Preferred A Professional Engineering License (or equivalent experience) LEED Accreditation Working IES-VE Knowledge What You'll Love: Competitive Pay: $122,712 to $150,404 annual salary and conditional bonus Employee Ownership: Build equity through our Employee Stock Ownership Plan (ESOP) Robust Benefits: 401(k), medical, dental, vision, life & disability insurance, transportation benefits...

and more! Generous Time Off: PTO, paid holidays, and company closure to clients from Christmas to New Year’s Purpose-Driven Culture: Paid volunteer time and a commitment to social equity Career Development: Work alongside industry leaders and access continuous learning opportunities Ready to grow with us? If you are looking for a role where your voice matters, your growth is supported, and your work makes a difference—apply today and become part of the Interface Engineering family.

Social Equity: Interface is committed to social equity within our walls and in our communities. We are a diverse, inclusive, and responsible firm. Interface provides equal employment opportunities (EEO) to employees and applicants regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status or any other applicable federal or state-protected classifications.

We support local business and seek to partner with small and minority-owned firms on our projects. Our staff is empowered to design community service programs (e.g., clean up beaches, serve meals at shelters, tutor school-aged children, etc.) – using paid volunteer time. Please note: H1-B visa sponsorship or transfer is not approved for this position.

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