Mechanical System Designer

This position is based in either Charlotte or Raleigh, NC , with frequent collaboration with our established engineering group in Charlotte. The role involves active participation in a wide range of engineering services including technical performance, training, system selection and evaluation, LEED performance, airside and hydronic design, equipment and control applications, energy modeling, and specification writing. This position reports to the Engineer-Of-Record.

Company Overview

MCI is a long-standing mechanical contractor specializing in the design, installation, and maintenance of building systems. Founded in 1948, MCI has grown steadily by investing in its people, maintaining strong client relationships, and delivering practical, high-quality mechanical solutions.

MCI is known for supporting long-tenured team members and providing consistent opportunities for growth. Mechanical designers at MCI work closely with construction, service, and controls teams, gaining real-world insight into how designs are built and maintained. This integrated approach allows designers to develop technically while contributing to projects that have lasting impact.

As a 100% employee-owned (ESOP) company, MCI prioritizes long-term stability, safety, and work-life balance. Our culture is built on respect, accountability, and shared success.

Don't just take our word for it: our employees voted MCI a Certified Great Place to Work ( .

Essential Duties

Project Design:

• Support and lead mechanical system design for HVAC, plumbing, and fire protection systems within assigned project scope, in coordination with senior engineers and project managers.
• Develop construction and shop drawings utilizing Autodesk software.
• Perform load calculations and assist with equipment selection for mechanical systems.
• Design air, hydronic, and ventilation systems for commercial and industrial facilities.
• Identify value engineering opportunities while maintaining system performance and code compliance.
• Ensure designs comply with applicable building codes, standards, and safety requirements.
• Support LEED documentation and energy performance reviews as required by project scope.
• Assist with commissioning activities, development of system narratives, and coordination of control sequences.

Project Management:

• Coordinate with engineering, construction, service, and controls teams to support project delivery.
• Contribute to mechanical design development from concept through construction documentation in accordance with project schedules.
• Collaborate with field teams to address constructability questions, RFIs, and design clarifications.
• Maintain organization and distribution of models, drawings, and project documentation.
• Participate in project meetings and design reviews to support timely and accurate deliverables.
• Stay informed of evolving mechanical technologies and industry best practices for potential application.

Qualifications & Skills

• Education : Bachelor's degree in mechanical curriculum from an accredited program.
• Professional Experience :
  • 2–5 years of experience in mechanical system design for commercial or industrial buildings.
• Exposure to construction, design-build, or contractor-integrated environments preferred.
• Technical Skills :
  • Proficiency in Revit and AutoCAD for mechanical system design and documentation.
• Experience performing HVAC load calculations and developing construction-level drawings.
• Working knowledge of air distribution, hydronic systems, and mechanical equipment selection.
• Familiarity with applicable building codes and standards.
• Ability to communicate technical information clearly with project teams.
• OSHA 10 Certification or ability to obtain.
• Personal Characteristics :
  • Strong interest in technical growth and continuous professional development.
• Ability to manage multiple design tasks while maintaining attention to detail.
• Collaborative team member with the ability to work independently when needed.

Compensation

Salary ; Compensation is based on experience and education, with a typical range of $75,000 to $95,000.

Annual Bonus: An annual bonus is awarded based on department performance.

MCI Career Benefits

At MCI, we believe in investing in our team members. We offer comprehensive benefits, including:

• Robust medical, dental, and vision insurance options.
• Generous paid time off (PTO) plan based on tenure.
• Short- and Long-Term disability coverage.
• Individual and partner life insurance.
• Empowering 401k program with an impressive company match.
• Participation in our Employee Stock Ownership Program (ESOP).

Employee ownership means that you don't just work at MCI, you own a piece of MCI. You contribute your ideas, effort, and teamwork to increase the company's performance and profitability, which then goes back to you as a shareholder. ESOP participants have 2.2 times as much in retirement plans and 20% more financial assets overall compared to non-ESOP companies.

We can't make you rich overnight, but if you commit to MCI, our ESOP ensures that our success is your success.