Why pre-screen robotics technicians before the site interview
The dangerous moment in this trade is a stopped line with a supervisor waiting. Guards get bypassed, isolation gets shortened, and someone enters a cell that is not properly locked out. Technicians worth hiring have refused to restart something and can describe the pressure they were under. The other half is diagnosis: swapping parts until it works is expensive and teaches nobody anything. A short screen tests both.
What actually matters when screening Robotics Technician candidates
- 01
Hands-on competence
Check hands-on work with specific platforms: FANUC, ABB or KUKA teach pendants, servo motor and harmonic drive replacement, encoder mastering, end effector alignment, and PLC I/O checks.
- 02
Safety discipline
Probe lockout/tagout practice around robot cells, light curtain and safety mat verification, dual-channel E-stop testing, and how they enter a cell during teach mode at reduced speed.
- 03
Fault finding
Test diagnosis of intermittent faults: repeated position errors, overtravel alarms, drifting vision pick accuracy, pneumatic gripper leaks. Ask how they read fault logs and isolate mechanical versus controls causes.
- 04
Reliability and conduct
Assess shift conduct on a running line: response time to downtime calls, CMMS work order and PM record keeping, spare parts discipline, and handover notes to the next shift.
Pre-screening questions to ask Robotics Technician candidates
12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.
Robots they maintain
3 questions01Can you elaborate on the kinds of robots you have worked with?
Listen forManufacturers and configurations named with the applications they were used for, and what they maintained alone.
Robot types listed with no maintenance work, or experience limited to operating rather than servicing.
02Can you describe a project where you handled regular maintenance and troubleshooting of robots?
Listen forA maintenance schedule they followed with a fault history that informed the intervals.
Maintenance performed only after breakdowns, or no record of what has failed before.
03Can you describe your experience with robot calibration and tuning?
Listen forCalibration performed with the effect on repeatability understood, and when a recalibration is actually needed.
Calibration described as a menu option, or drift never checked against a reference.
Diagnosis not swapping
3 questions04Can you explain a situation in which you had to diagnose and fix a malfunctioning robot?
Listen forA fault narrowed by measurement across mechanical, electrical and control causes, with the confirmed root cause.
Modules replaced until the symptom cleared, or a cause asserted with no evidence.
05Describe a time when you had to use complex problem-solving skills during a project.
Listen forAn intermittent or unusual fault worked through methodically, including where their first theory was wrong.
Problems that resolved themselves, or no fault that required real investigation.
06Do you have experience with the sensors used in robotics?
Listen forSensor types understood including their failure modes, and how a degraded sensor differs from a dead one.
Sensors treated as working or failed, or no experience diagnosing a sensor giving wrong readings.
Isolation under pressure
3 questions07Are you comfortable working with high voltage electrical systems and machinery?
Listen forIsolation and verification described as fixed practice, with a case where they refused to work on something live.
Work performed without verified isolation, or shortcuts taken when production was waiting.
08Do you have safety certifications relevant to this role?
Listen forRelevant certification current, with an understanding of the machinery safety requirements around robot cells.
Certification lapsed, or no awareness of the standards governing guarding and access.
09Do you have experience with pneumatics and hydraulics in industrial applications?
Listen forStored energy understood and released before work, with the specific hazards of each system described.
Stored pressure not considered during isolation, or hydraulic work performed without depressurising.
Calibration and integration
3 questions10Do you have experience programming controllers such as programmable logic controllers?
Listen forA clear boundary around what they may change, with modifications made under a change process.
Control logic edited on a running cell, or safety functions modified without authorisation.
11Are you familiar with integrating robots with other equipment or machinery?
Listen forInterlocks and handshaking between machines understood, with an integration problem they resolved.
Integration treated as wiring, or no awareness of how interlocks between machines should behave.
12Have you trained others on how to use and maintain robotic equipment?
Listen forOperators trained on what they may and may not do, with safe practice checked rather than assumed.
Training delivered once verbally, or operators left able to bypass a guard without understanding why not to.
How to score responses
Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.
Hands-on competence
35%5Names controller families worked on, describes mastering a six-axis arm after gearbox swap, and cites tolerances held during tooling alignment.
Safety discipline
30%5Treats cell entry as a procedure: verifies energy isolation, keeps sole key control, and has refused to bypass an interlock under production pressure.
Fault finding
20%5Walks an actual alarm code to root cause, distinguishes worn linear bearing from tuning issue, and explains what proved the fix stuck.
Reliability and conduct
15%5Cites downtime or MTTR figures they improved, logs work in the CMMS consistently, and is trusted on off-hours callouts and startups.
The dangerous moment is a stopped line with a supervisor waiting, when isolation gets shortened. A one-way video screen asks what they refused to restart.
Try it on HirevireScreening FAQ
Process basics
How long should a pre-screening round for a robotics technician take?
Ten to fifteen minutes across eight to ten questions, answered async. Enough to establish the robots they maintain, test their diagnostic method, and hear how they behave under restart pressure.
Does the screen replace checking qualifications?
No. Verify electrical qualifications and any safety certification with the issuing body before anyone reaches an interview. The screen establishes conduct under production pressure and diagnostic reasoning, neither of which a certificate demonstrates.
Evaluating answers
What is the strongest signal when screening this role?
Something they refused to restart. Technicians with discipline have held a cell down despite production pressure, and can describe the conversation. Anyone who has never done that is a safety risk on a bad shift.
How do I judge their diagnostic method?
Ask about a fault they traced. Real answers narrow the cause with measurement across mechanical, electrical and control domains. Anyone who describes replacing modules until it works will keep doing that expensively.
Go deeper on this role
Sanat has been hiring since 2012 and watching the recruitment industry change up close ever since, and turned that screening process into Hirevire's video screening platform. LinkedIn
