Senior Service Technician

Overview

Rancho Cucamonga Office, 9531 Milliken Ave, Rancho Cucamonga, California, United States of America

Posted Wednesday, January 28, 2026 at 8:00 AM

TRL Systems, a prominent fire life safety and security integrator in Southern California, is seeking a technician to install, maintain, and repair low voltage systems in commercial and secure environments. The role involves responding to service calls for various systems, including medical alert (nurse call), fire alarm, access control, video surveillance (CCTV), and intrusion detection.

As the Senior Service Technician your day-to-day tasks include diagnosing and troubleshooting malfunctions, repairing or replacing faulty equipment, providing technical support and training, and maintaining detailed service records. The technician will also collaborate with internal teams and vendors.

• Respond to service calls for healthcare and security systems, including medical alert systems (nurse call), fire alarm systems, access control systems, video surveillance (CCTV), and intrusion detection systems.
• Diagnose and troubleshoot malfunctions to ensure proper functionality.
• Repair or replace faulty equipment and components.
• Provide technical support and training to healthcare staff and security personnel on system operation.
• Maintain detailed service records and documentation.
• Collaborate with internal teams and vendors to ensure seamless system operation.

• Hour and days may vary.
• Must be able to work weekends, nights, split shifts, and rotating shifts (if needed).

• 5 years troubleshooting and repairing security, nurse call, and fire life safety systems (e.g. EST3, Lenel, and Ascom).
• High School Diploma (or equivalent).
• Valid California Driver License and proof of auto insurance.
• Must be able to get required vaccinations/immunizations needed to meet client requirements.

• Ability to drive for 2+ hours in a work shift/day, daily.
• Ability to walk, bend, stoop, hear, and speak, daily.
• Ability to work in indoor and outdoor environments, under all temperature variations.
• Ascend/Descend and work at heights above 6 ft and extreme heights, occasionally.
• Move/Transport items weighing 20 pounds, occasionally.
• Position self to work in confined spaces, occasionally.
• Pushing/Pulling using upper extremities, daily.
• Stand or sit for long periods (4+ hours), daily.
• Operate company vehicle frequently.
• Work environment may be construction sites, commercial buildings, high rise/mid-rise buildings, and/or hospitals with patient contact.

• Employee Merit and Longevity Awards: Merit rewards and longevity awards including items such as branded apparel and apparel, video game consoles, headphones, golfing gear, purses, BBQs, and watches.
• Company Sponsored Events: Family-friendly events with food, games and prizes.
• Training and Development: Classes available to develop you personally and professionally.
• Career Advancement: We partner with you to build a long and successful career at TRL.

TRL Systems, Inc. conducts pre-employment drug screening in accordance with Federal Contractor regulations and background checks in accordance with State and local regulations. TRL is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity, disability or veteran status. The company’s employment policies and decisions on employment and promotion are based on merit, qualifications, performance, and business needs, without regard to any unlawful factor.

The salary range displayed reflects the minimum and maximum target for new hire salaries for the position across all California locations; pay is determined by work location and additional factors including skills, experience, and education/training.

Rancho Cucamonga Office, 9531 Milliken Ave, Rancho Cucamonga, California, United States of America