Mechanical Engineer

<p><strong>Role Summary: </strong></p> <p>$90-95k annually</p> <p>Under the direction of the Engineering &amp; 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.</p> <p>&nbsp;</p> <p><strong>Essential Job Functions:</strong></p> <ul> <li>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</li> <li>Perform psychrometric chart analyses and study weather to inform design decisions</li> <li>Design temporary systems from Polygon’s equipment fleet</li> <li>Develop project layouts, equipment schedules, and sequences of operation tailored to each client’s environment and process needs</li> <li>Support the estimating process: take-offs, equipment selection, scope development, and pricing inputs for bids and proposals</li> <li>Prepare and present engineered solutions to clients, general contractors, and internal sales teams</li> <li>Translate technical decisions into clear, client-friendly language</li> <li>Serve as the engineering resource for the field technician team during equipment deployment, startup, commissioning, and troubleshooting</li> <li>Travel to project sites on short notice when needed — for emergency response, project kickoffs, complex deployments, or field issues that require engineering oversight</li> <li>Translate field observations into improvements to design and project execution</li> <li>Develop and maintain Standard Operating Procedures (SOPs) for specific systems, applications, and key clients</li> <li>Create technical documentation, including system narratives, commissioning checklists, monitoring plans, and project closeout packages</li> <li>Build out engineering templates and reference materials to improve consistency and efficiency across the team</li> </ul> <p>&nbsp;</p> <p><strong>Job Qualifications:</strong></p> <ul> <li>Bachelor’s degree in Mechanical Engineering or a related field</li> <li>Solid understanding of thermodynamics, heat transfer, and HVAC fundamentals</li> <li>Comfortable with psychrometric calculations</li> <li>Strong written and verbal communication skills, with the ability to explain technical concepts to engineers, salespeople, technicians, and clients</li> <li>MS Office proficiency across the board, with Excel as a particular strength</li> <li>Demonstrated CAD experience</li> <li>Willingness to travel on short notice, including occasional nights and weekends for emergency response</li> <li>Valid US driver’s license and the ability to work on construction and industrial job sites</li> </ul> <p>&nbsp;</p> <p><strong>Preferred Training Requirements and Competencies:</strong></p> <ul> <li>EIT certification</li> <li>1–3 years of experience in HVAC, mechanical contracting, temporary climate solutions, dehumidification, or a related field</li> <li>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</li> <li>Familiarity with building codes, OSHA site safety, and standard PPE requirements</li> <li>Experience supporting estimating, sales, or field service teams</li> </ul> <p>&nbsp;</p> <p><strong>Demonstration of the Polygon Values:</strong></p> <ul> <li>Integrity</li> <li>Excellence</li> <li>Empathy</li> </ul> <p>&nbsp;</p>