Senior CO2 Refrigeration Systems Engineer — Remote

Tiello; Chino Hills (CA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Bonuses (Quarterly + Annual 5-10% of]

Job summary

Tiello is partnering with a highly respected Mechanical Contractor on their search for a Senior Refrigeration Applications Engineer to support national projects across cold storage, grocery, and industrial refrigeration environments.

This is a high-impact role for an experienced engineer who has designed CO2 systems, understands complex system integration, and is looking to join a people-first company that values autonomy, technical depth, and sustainable growth.

Qualifications

• 7–10+ years in industrial/commercial refrigeration
• Experience with CO2 system design
• Familiar with EMS controls, PLCs, and sequence-of-operation documentation
• Knowledge of ASHRAE, IIAR, and local codes
• Strong client and team communication skills
• PE license preferred (not required)

Responsibilities

• Design and specify industrial refrigeration systems including CO2, glycol-based, and low-temp cascade systems
• Engineer EMS/PLC control system integration
• Collaborate with clients, internal departments, vendors, and field teams throughout the full project lifecycle
• Develop layouts, load calculations, submittals, and redlines for active projects
• Provide technical guidance and limited field support during construction and commissioning
• Mentor junior engineers and manage multiple projects at a time

Skills

Industrial refrigeration

CO2 design

EMS/PLC integration

Code compliance

Communication

PE License

Tools

PLCs

Job description

Tiello is partnering with a highly respected Mechanical Contractor on their search for a Senior Refrigeration Applications Engineer to support national projects across cold storage, grocery, and industrial refrigeration environments.

This is a high-impact role for an experienced engineer who has designed CO2 systems, understands complex system integration, and is looking to join a people-first company that values autonomy, technical depth, and sustainable growth.