Senior Mechanical Engineer

Team Leader with Dynamic Leadership qualities that works and promotes honesty, integrity and hard work ethic

On Line Design is currently helping a customer, in Cincinnati, OH, fill a full-time Senior Mechanical Engineer with a background in Industrial and Commercial HVAC/Process Systems. You will play a pivotal role in designing, analyzing, and certifying complex hydronic and HVAC systems. In this role you will be asked to collaborate with project managers, sales, and field operations to deliver code-compliant, construction-ready solutions that power critical facilities.

• Lead the design and engineering of mechanical and hydronic systems for design-build projects
• Review, seal, and approve permit-ready drawings (Ohio PE required)
• Provide engineering oversight and mentor junior designers
• Ensure all designs meet IMC, IFGC, ASHRAE, and energy code requirements
• Develop calculations and system models using Carrier HAP, AutoCAD, Revit, and Excel
• Support quality control reviews and participate in client-facing technical meetings

• Ohio PE License (required); KY/IN PE or ability to obtain within 12 months
• 5+ years of mechanical/HVAC design experience with strong hydronics competency
• Experience with industrial process systems; ammonia refrigeration experience is a plus
• Proven background in commercial/industrial projects
• Proficient in load calculation software and CAD/Revit platforms
• Strong knowledge of codes and design best practices

• Computer-Aided Design (CAD)
• Revit
• Mechanical Systems
• Hydronics/Steam
• Boilers
• Chilled Water
• HVAC
• Commercial Projects

On Line Design, Inc. is an equal opportunity employer and does not discriminate based on age, race, religion, color, sex, national origin, marital status, physical or mental disability, genetics, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.