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Mechanical Engineer - HVAC Designer

McMullen Engineering Co., Inc.
Westerville, OH Full Time
POSTED ON 3/18/2026
AVAILABLE BEFORE 9/13/2026

McMullen Engineering Co., Inc. is a small MEP design engineering firm. We are seeking an Entry Level Mechanical Engineer with an interest in HVAC system design to join our growing team in Westerville, Ohio. This role offers the opportunity to work on a variety of commercial and residential building projects while collaborating with a multidisciplinary engineering team.


Role Description

Key responsibilities include:

  • Design and develop HVAC systems and air distribution systems
  • Perform load calculations, equipment selection, and system sizing
  • Prepare construction documents, drawings, and technical specifications
  • Prepare Model Energy Code Compliance reports
  • Coordinate designs with architects, electrical engineers, and other project stakeholders
  • Perform review of shop drawings and RFIs and provide appropriate responses.
  • Support project execution from concept through construction
  • Ensure designs comply with applicable codes, standards, and client requirements
  • Assist with field inspections, construction administration, and troubleshooting as needed


Qualifications

  • Bachelor’s degree in Mechanical Engineering or related field
  • Exposure to/proficiency with CAD software (e.g. AutoCAD 2025, Revit, Solidworks)
  • Interest in the construction industry and HVAC design
  • Strong analytical, problem-solving, and communication skills
  • Ability to work collaboratively in a fast-paced environment
  • EIT certification or progress towards PE licensure is a plus


What We Offer

  • Competitive salary commensurate with experience
  • Exposure to diverse and challenging engineering projects
  • Comprehensive benefits package
  • Opportunities for professional growth and advancement
  • Supportive team culture and collaborative work environment
  • Paid time to study for and take EIT or PE exam, cost of exam reimbursed when passed


If you are an HVAC-focused Mechanical Engineer looking to start your career in Westerville, we encourage you to send your resume and cover letter to meci @ mcmulleneng.com.

Applicants must be authorized to work in the United States. The company does not sponsor employment visas or provide relocation assistance.

Please apply by sending your resume and cover letter to meci @ mcmulleneng.com (removing the spaces).

Pay: $65,000.00 - $75,000.00 per year

Benefits:

  • 401(k)
  • Dental insurance
  • Health insurance
  • Paid time off
  • Professional development assistance
  • Work Location: In person

Salary : $65,000 - $75,000

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