Ammonia Refrigeration Technician - 2nd Shift, On-Call

MAC Incorporated; Dallas (TX); On-site; USD 90,260,000 - 104,587,000; Full time

Benefits offered by this job

Health benefits after 30 days

PTO 1 week accrual

On-call 24/7 support

Job summary

MAC Incorporated in Dallas, TX seeks a strong Ammonia Refrigeration Technician for the 2nd shift at a large manufacturing plant. The role requires operating and maintaining ammonia systems, performing preventive maintenance, logging data, and ensuring GMP and USDA compliance.

You will collaborate with teams to resolve issues, maintain safety and documentation, and support production with PLC/VFD-driven systems. Bilingual English/Spanish preferred; on-call 24/7 availability is expected.

Qualifications

• Strong background in ammonia refrigeration, preferably in food manufacturing environments.
• 5–10 years of hands-on ammonia-based refrigeration experience preferred.
• Skilled in HVAC repair and maintenance.
• Ability to work independently or as part of a team, adhering to PSM, company policies, and regulatory requirements.
• Availability for 24/7 on-call support.
• Maintain documentation for preventive maintenance, in-house audits, and annual inspections.
• Language Skills: English/Spanish bilingual preferred.
• Mathematical and reasoning abilities; able to read schematics and drawings.

Responsibilities

• Operate and maintain ammonia refrigeration systems in a frozen food manufacturing plant.
• Perform preventative maintenance and repairs to ensure equipment operates at peak performance.
• Maintain logs and documentation of operating conditions, system performance, and issues.
• Collaborate with team members to identify, communicate, and resolve problems.
• Ensure compliance with safety rules, GMPs, and USDA regulations.
• Maintain plumbing, electrical, and HVAC systems; diagnose and repair as needed.
• Assist with maintenance of production machinery and facility infrastructure.
• Work with PLC controls and VFD drives; read schematics and manufacturer specs.

Skills

Ammonia refrigeration

HVAC repair

Problem solving

PSM compliance

Bilingual English/Spanish

Tools

PLC controls

VFD drives

Electrical schematics

Job description

MAC Incorporated in Dallas, TX seeks a strong Ammonia Refrigeration Technician for the 2nd shift at a large manufacturing plant. The role requires operating and maintaining ammonia systems, performing preventive maintenance, logging data, and ensuring GMP and USDA compliance.

You will collaborate with teams to resolve issues, maintain safety and documentation, and support production with PLC/VFD-driven systems. Bilingual English/Spanish preferred; on-call 24/7 availability is expected.