Mechanical Engineer

Role Summary:

$90-95k annually

Under the direction of the Engineering & Estimating Manager -National the Project Engineer is responsible for supporting the Engineering and Estimating team across the full project lifecycle including load calculations system design bidding support client presentations field deployment and post-project documentation. This is an engineering-track role with exposure to a wide variety of industries and applications. The day-to-day work is office-based with travel for site visits client meetings and emergency response.

Essential Job Functions:

• Perform load calculations cooling heating moisture and ventilation for temporary climate solutions across construction sites industrial and manufacturing facilities food production plants automotive and battery plants aerospace facilities data centers commercial buildings and labs
• Perform psychrometric chart analyses and study weather to inform design decisions
• Design temporary systems from Polygons equipment fleet
• Develop project layouts equipment schedules and sequences of operation tailored to each clients environment and process needs
• Support the estimating process: take-offs equipment selection scope development and pricing inputs for bids and proposals
• Prepare and present engineered solutions to clients general contractors and internal sales teams
• Translate technical decisions into clear client-friendly language
• Serve as the engineering resource for the field technician team during equipment deployment startup commissioning and troubleshooting
• Travel to project sites on short notice when needed for emergency response project kickoffs complex deployments or field issues that require engineering oversight
• Translate field observations into improvements to design and project execution
• Develop and maintain Standard Operating Procedures (SOPs) for specific systems applications and key clients
• Create technical documentation including system narratives commissioning checklists monitoring plans and project closeout packages
• Build out engineering templates and reference materials to improve consistency and efficiency across the team

Job Qualifications:

• Bachelors degree in Mechanical Engineering or a related field
• Solid understanding of thermodynamics heat transfer and HVAC fundamentals
• Comfortable with psychrometric calculations
• Strong written and verbal communication skills with the ability to explain technical concepts to engineers salespeople technicians and clients
• MS Office proficiency across the board with Excel as a particular strength
• Demonstrated CAD experience
• Willingness to travel on short notice including occasional nights and weekends for emergency response
• Valid US drivers license and the ability to work on construction and industrial job sites

Preferred Training Requirements and Competencies:

• EIT certification
• 13 years of experience in HVAC mechanical contracting temporary climate solutions dehumidification or a related field
• Exposure to construction sites manufacturing facilities food production automotive or battery plants aerospace data centers or controlled environments such as labs cleanrooms and pharmaceutical facilities
• Familiarity with building codes OSHA site safety and standard PPE requirements
• Experience supporting estimating sales or field service teams

Demonstration of the Polygon Values:

• Integrity
• Excellence
• Empathy