Security Service Technician (union)
Posted Jul 24, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
You work alone from a remote location most days. How do you stay organized and accountable?
What they are checking: Self-direction and reliability when no supervisor is checking in through the day.
Tell me about a time you spotted a problem for a customer beyond the call you were sent on.
What they are checking: Whether they look out for the customer's building and recommend solutions, as the posting expects.
What would you do
A customer is frustrated because their cameras keep failing. How do you handle the visit?
What they are checking: Customer handling as a trusted advisor, explaining the cause and offering a lasting fix.
You make a temporary repair because you don't have the right part. What do you do next?
What they are checking: Whether they document it properly with a trouble order and follow through so it isn't forgotten.
How do you handle working in busy downtown buildings with tenants, security staff and tight access rules?
What they are checking: Professionalism and planning in occupied high-rise settings where access and timing are restricted.
About the work
Walk me through how you'd troubleshoot a card access door that won't unlock for valid badges.
What they are checking: Methodical diagnosis across reader, controller, wiring, lock power and software, not just swapping parts.
How do you find a ground fault or open circuit in a fire alarm system?
What they are checking: Hands-on skill with fire alarm wiring and the patience to trace faults in large buildings.
What brands or platforms of access control, CCTV and fire alarm panels have you worked on?
What they are checking: Breadth of hands-on experience across the systems this downtown service work involves.
You have to take a fire alarm system offline for a repair. What do you do before you start?
What they are checking: Knowing to notify the monitoring center, the customer and possibly the fire department, and to arrange a fire watch.
How do you coordinate an inspection with the fire department or police?
What they are checking: Familiarity with working alongside authorities having jurisdiction, which the posting names.
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Practice this out loudThe full job description
As published by Johnson Controls.