Mechanical Engineer (Denver Metropolitan Area)

Hiring: Mechanical Engineer (PE) – Drive the Net-Zero Revolution!

Location: Lenexa, KS or Centennial, CO (Hybrid or Remote)

Job Type: Full-Time

Travel: 10-20% travel required

Anticipated Compensation: $130,000 - $160,000 (including performance bonuses)

About Millig Design Build

Existing buildings account for 40% of the world’s carbon emissions. At Millig Design Build , we are doing something about it.

We don’t just manage construction—we are revolutionizing the way projects are delivered. We are an engineering-led design-build firm specializing in turnkey facility improvements that transform aging, energy-draining structures into high-performance, net-zero environments. We’ve broken down the traditional silos between engineering, construction, and commissioning to eliminate finger-pointing, delays, and cost overruns.

As a Mechanical Engineer at Millig, you will join a rapidly growing team of the best engineers in the country, designing systems to make buildings healthier, safer, and more energy efficient for major universities, international manufacturers, state governments, and school districts. Because we are a true design-build firm, you will have the unique opportunity to directly support your MEP designs as they are built. Our focus is always on quality and project success— not billable hours.

How You Will Make an Impact

We are looking for a creative, practical, and highly proficient Mechanical Engineer to design ground-up and retrofit HVAC systems, support decarbonization planning, and develop comprehensive facility improvement projects. Your core responsibilities will include:

• Lead MEP Design: Spearhead the design and development of MEP systems for diverse building projects. Prepare, modify, and finalize engineering documents, including drawings and specifications, using Revit and AutoCAD. Confidently finalize the selection of equipment and materials for complex HVAC installations.
• Drive Engineering & Analysis: Lead the technical analysis, calculations, and simulations for system loads and performance. Resolve issues impacting the budget, scope, and schedule by evaluating alternate schemes and implementing value engineering options to mitigate project risks.
• Master Auditing & Site Assessment: Support the completion of preliminary and detailed facility studies to identify high-impact energy conservation opportunities and required system renewal projects.
• Collaborate for Integrated Delivery: Coordinate seamlessly with subconsultants, designers, vendors, and contractors to ensure all project requirements are met. Work hand-in-hand with our in-house construction and estimating teams to develop, review, and iterate on cost estimates and design concepts.

What You Bring to the Table

• Education & Credentials: Bachelor's degree in Mechanical Engineering from an accredited school. You are a Licensed Professional Engineer (PE) and willing to obtain licensure in other states as needed. (Licenses in CO and WA are highly preferred).
• Targeted Experience: 7+ years of experience as a mechanical engineer focused on building systems. You possess strong project management skills for overseeing multiple projects simultaneously and consistently meeting deadlines.
• Technical Chops: Strong, expert-level knowledge of HVAC principles and a deep understanding of building codes, regulations, and industry standards related to HVAC, controls, and plumbing systems. (Familiarity with designing controls, electrical, and plumbing systems in addition to mechanical systems is preferred).
• Decarbonization Mindset: A strong working knowledge of energy-efficient technologies and the expertise to design them to optimize system performance.
• Software Proficiency: Proven experience with Bluebeam, CAD, Revit, and industry-standard load calculation software.
• Soft Skills: Excellent communication, collaboration, and problem-solving abilities. You are a self-starter who thrives in a team-oriented environment.

Our Commitment to You

At Millig, we believe in providing flexibility and work-life balance. We trust our employees, value their contributions, and strive to provide a great place to work. To achieve these goals, we provide some of the best benefits in the industry:

• 12 All-Company Paid Holidays Each Year
• Unlimited PTO with Mandatory Minimum Usage
• Up to 14 Weeks of Paid Parental Leave
• Significant Employee Performance Bonuses
• Generous 401(k) Match and Vesting from Day 1
• 80% Employer-Paid Health Insurance Coverage , plus Dental, Vision, & HSA/FSA
• Life Insurance
• Short Term Disability
• Professional Development Budget & Cell Phone Reimbursement
• Relocation Benefits

Who We Are:

Millig Design Build is an integrated engineering, design, and construction firm specializing in facility improvements that address energy efficiency, building health and safety, and core infrastructure needs. Our approach is holistic and human-centered, inspired by collaborative conversations that revolve around what brings our clients value. Our firm has offices in Kansas City, Denver, Portland, and Seattle. Learn more about Millig at

Millig Design Build is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, gender identity, sexual orientation, national origin, disability status, protected veteran status, or any other characteristic protected by law.

Ready to Build a Better Future?

Click Apply to submit your resume and let us know about the most challenging MEP system you've successfully designed!

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