Fire & Security Alarm Installer​/Technician

Career Opportunity at GCSI Security Group
– Williamstown, NJ:
Fire & Security Alarm Installer/Technician

Looking to contribute to reliable security solutions for homes and businesses?
GCSI Security Group
, we're part of a trusted multi-branch network delivering expert security across the Northeast and Mid-Atlantic since 1986
. We are licensed professionals providing comprehensive security, video surveillance, fire protection and access control system installations that protect what matters most.

• Supportive Team Culture: Collaborate with dedicated pros who emphasize ongoing training and recognizing achievements as a team.
• Career Growth: From entry-level support to leadership roles, we invest in your development with certifications, mentorship, and clear advancement paths.
• Growth & Stability: Benefit from our steady expansion through strategic acquisitions and consistent direct sales, promoting long-term stability and offering a solid foundation for long-term careers.

From our Williamstown branch, we provide comprehensive security solutions to South Jersey residential and commercial clients, covering everything from consultations to ongoing monitoring.

We’re looking for a skilled and detail-oriented Low Voltage Technician to join our team. In this role, you’ll be responsible for the installation, maintenance, and troubleshooting of low voltage systems including surveillance cameras, alarm systems, access control, and other security technologies.

The ideal candidate will have a strong mechanical aptitude, hands‑on experience with tools, and the ability to design and implement reliable security solutions that meet each client’s unique needs.

• Install and configure low voltage systems, including CCTV, alarm systems, and access control.
• Perform routine maintenance, repairs, and system diagnostics to ensure optimal performance.
• Build and assemble components for a variety of low voltage applications.
• Use remote access software to diagnose and resolve system issues.
• Collaborate directly with clients to assess their needs and deliver customized security solutions.
• Maintain accurate documentation of all installations, service calls, and inventory.
• Stay informed about the latest industry standards, technologies, and best practices.

• 5+ years of proven experience installing and maintaining low voltage systems.
• Familiarity with security system technologies such as IDS (Intrusion Detection Systems) preferred.
• Experience in alarm system sales is a plus.
• Strong mechanical skills and proficiency with hand and power tools.
• Relevant certifications in low voltage or related fields (preferred but not required).
• Excellent problem-solving, troubleshooting, and communication skills.
• Ability to work independently and collaboratively in a team environment.

Experience or proficiency in:

• Security Systems & Access Control
• Data and Structured Cabling/Wiring
• Ability to read and interpret technical drawings and schematics
• Leadership qualities to oversee junior technicians and small projects

Preferred Manufactures we are looking for; DMP, Silent Knight, Fire Lite, Ademco/ Honeywell/ Resideo

We offer competitive pay starting at $35–$50, based on experience, plus:

• 401(k) Retirement Plan
• Health Insurance
• Paid Time Off and Paid Holidays

Join our Williamstown team in South Jersey and work with experienced staff to deliver dependable service to this local area. Help protect communities, advance your skills in a supportive environment, and grow with a company dedicated to making a real security impact.

Ready to make a difference? Apply now via our careers page at  or email your resume to  We look forward to welcoming you!