hero

Career Opportunities at SJF Portfolio Companies

SJF Ventures
companies
Jobs

Ammonia Refrigeration Technician

L

Lineage

Sunnyvale, TX, USA
Posted on Mar 13, 2026
We are seeking a Maintenance Technician with industrial ammonia refrigeration experience and strong electrical maintenance skills to support the safe and efficient operation of our facility. In this role, you will help maintain and repair refrigeration systems, electrical equipment, and facility infrastructure while following all company safety standards and regulatory requirements. You will also support routine testing and inspections to ensure refrigeration systems operate according to design specifications.

Key Responsibilities

  • Maintain, troubleshoot, and repair ammonia refrigeration systems, including performing preventative and predictive maintenance to ensure reliable operation.

  • Perform electrical maintenance and repairs on motors, wiring, electrical components, and machinery while following electrical codes and safety standards.

  • Conduct routine inspections, testing, and preventative maintenance on facility equipment and building infrastructure.

  • Maintain and repair material handling equipment and other operational machinery within the facility.

  • Complete assigned work orders and accurately log all maintenance activities in the CMMS system.

  • Document inspections, maintenance activities, and equipment performance and communicate updates to leadership.

  • Assist with additional maintenance tasks and projects as needed.

Additional Responsibilities

  • Support and monitor contractors working on or around refrigeration systems to ensure compliance with safety and regulatory standards.

  • Safely operate motorized lifts and equipment when performing inspections, maintenance, and repairs.

What We’re Looking For

  • Ammonia refrigeration experience required (industrial refrigeration systems such as ammonia, Freon, or CO₂).

  • Electrical troubleshooting and maintenance experience with motors, wiring, and electrical components.

  • At least 3 years of mechanical maintenance experience in warehouse, manufacturing, processing, or industrial environments (or equivalent trade school training).

  • Experience with pneumatic, hydraulic, and electrical systems in automated environments preferred.

  • Ability to read and interpret Piping & Instrumentation Diagrams (P&IDs) is a plus.

  • Basic electrical instrumentation knowledge.

  • Strong problem-solving skills and attention to detail.

  • Comfortable using maintenance tracking systems and basic computer programs (Word, Excel).

Work Environment

  • Ability to work in temperature-controlled environments, including freezer areas as low as -20°F and warmer areas up to 100°F, while wearing company-provided protective gear.

  • Ability to lift 40 lbs. or more, depending on the facility.

  • Flexible schedule availability including weekends when required.

  • Comfortable working in environments with varying noise levels.

  • Some locations may require working at heights.

Why Lineage?

This is an excellent position to begin your career path within Lineage! Success in this role enables greater responsibilities and promotions! A career at Lineage starts with learning about our business and how each team member plays a part each and every day to satisfy our customers’ requirements. Beyond that, you’ll help us grow and learn on our journey to be the very best employer in our industry. We’ll ask you for your opinion and ensure we do our part to keep you developing and engaged as we grow our business. Working at Lineage is energizing and enjoyable. We value respect and care about our team members.

Lineage is an Equal Employment Opportunity Employer and is committed to compliance with all federal, state, and local laws that prohibit workplace discrimination and unlawful harassment and retaliation. Lineage will not discriminate against any applicant on the basis of race, color, age, national origin, religion, physical or mental disability or any other protected status under federal, state and local law.

Benefits


Lineage provides safe, stable, reliable work environments, medical, dental, and basic life and disability insurance benefits, 401k retirement plan, paid time off, annual bonus eligibility, and a minimum of 7 holidays throughout the calendar year.