Step 3 · Interview How to interview for each commercial cleaning & facilities role.
Everyone who applies will claim the experience. These are the questions that test it, the signals that separate a strong candidate from a plausible one, and the mistake each seat invites.
Janitor / Custodial Technician
BLS 10th to 90th percentile Cleans and maintains commercial facilities on a route or a fixed site: restrooms, floors, trash and recycling, common areas, and periodic work such as stripping and refinishing or carpet extraction. In healthcare, food and industrial settings the work is governed by a written protocol.
Questions that find out
- What dwell time does your disinfectant need and what happens if you wipe it early?
- Walk me through stripping and refinishing a VCT corridor overnight.
- How do you clean a restroom so it stays acceptable for eight hours, not one?
What a strong candidate shows
- Knows the difference between cleaning, sanitising and disinfecting, and when each is required
- Has worked to a documented protocol - healthcare, food plant, or similar - not just a checklist
- Floor care experience stated specifically: stripping, refinishing, burnishing, extraction
The mistake this seat invites. Treating the seat as unskilled and hiring purely on availability. Turnover costs more than the wage difference, and protocol-trained cleaners are a different labour market.
Cleaning Supervisor
BLS 10th to 90th percentile Runs cleaning crews across one or several buildings: staffing and coverage on a shift that is mostly nights, training and protocol compliance, quality inspections, supply and equipment control, and the client relationship with facility management.
Questions that find out
- Two people no-show on a four-person building. What do you do?
- How do you inspect a site and what do you do with the result?
- A client complains about restrooms every Monday. How do you diagnose it?
What a strong candidate shows
- Can state how they cover a call-out at nine at night without the client noticing
- Inspects against a written standard and keeps the record
- Has managed supply and equipment budgets, which is where the margin leaks
The mistake this seat invites. Hiring on cleaning skill rather than on staffing and retention. Supervisors are judged on coverage and turnover far more than on technique.
Every role in every trade is in the interview question bank.