Sr. Refrigeration Engineer​/Designer

Our Scarborough based client provides industrial chilling, pumping, and freezing equipment for industrial temperature control needs. They are looking for a Senior Refrigeration Engineer/Designer who can design robust refrigeration systems that meet customers’ cooling needs.

Role Summary:

• Evaluate customers’ process to determine their cooling requirements (load profiles, safety and operability constraints).
• Design complete refrigeration systems and controls strategies that meet customer requirements in the real life.
• Support commissioning and troubleshooting in the field to ensure systems perform as designed and root cause any issues.

This role is ideal for an individual who has experience and a deep understanding of both:

• Design of refrigeration systems and thermodynamics principles.
• Field installation, commissioning and integration of refrigeration systems into customers’ process.

Who You Are:

• You enjoy seeing your designs run in the field and are comfortable putting on a hard hat to figure out why something isn’t working.
• You like project ownership from project definition through design and commissioning.
• You like collaborating with Sales, Service, and Controls and you can speak everyone’s language.

Key Responsibilities:

Applications and Sales Support:

• Evaluate and understand customer process requirements, operating profiles (continuous vs batch, pull-down vs steady load), and constraints.
• Verify Sales’ proposal by performing cooling load, energy balance, and equipment sizing calculations.
• Support sales during bidding phase by providing technical insight and performance estimates.
• Design skidded or built-up refrigeration systems and process chillers using HFC/HFO and ammonia.
• Define system operating envelopes, setpoints, and capacity-control strategies (VFDs, slide valves, cylinder unloading, etc.).
• Develop and review process flows and P&IDs for new systems and major retrofits.

Controls and Equipment Operation:

• Develop clear controls narratives that link process requirements to system behavior and setpoints.
• Work with PLC programmer to define sequences of operation, alarm strategies, and interlocks that protect equipment and product.
• Provide input to PLC/HMI logic to ensure the system operates safely, efficiently, and is protected against potential misuse.
  
  - Support commissioning teams by validating design intent, tuning control loops, and resolving startup issues to ensure the system meets customer requirements.

Project Execution & Documentation:

• Produce and/or review technical documentation: design reports, datasheets, equipment schedules, and O&M manuals.
• Work with CAD / design teams to review GA layouts and skid designs for serviceability, piping practices, and constructability.
• Participate in design reviews, HAZOPs / risk assessments, and value-engineering sessions.
• Provide technical support to project managers, manufacturing, and procurement when design changes or substitutions are required.

Customer Support & Life-Cycle Involvement:

• Support the service team with root-cause analysis of chronic system issues (capacity shortfalls, nuisance trips, oil management, poor pull-down, etc.).
• Recommend and scope upgrade projects (retrofits, controls upgrades, capacity expansions, efficiency improvements).
• Provide occasional training to customer operators and internal teams on refrigeration system operation and best practices.

Safety, Codes & Compliance:

• Ensure designs comply with relevant codes and standards, including CSA B52, ASHRAE 15, applicable building and mechanical codes, and provincial regulatory requirements.
• Incorporate safety devices, relief systems, and safe operating procedures into system design.
• Contribute to internal engineering standards and design guidelines.

Qualifications:

Must-Have:

• 8+ years of experience in industrial or commercial refrigeration system design, applications engineering, or installation/commissioning technical support.
• Demonstrated experience designing complete refrigeration systems and being involvement in system integration with customer processes.
• Strong understanding of refrigeration cycles, compressor performance, superheat control, oil management, and refrigeration controls.
• Proficiency in…