CAD Technician Interview Questions UK: 8 Real Questions and What Interviewers Want

Applying for a CAD Technician job in the UK? Here is what you are likely to be asked. These questions come from our CAD Technician question bank of 16 questions, written for UK employers at junior level.

Eight CAD Technician interview questions, and what the interviewer is thinking

1. What does a typical day as a CAD technician involve?

Why they ask: They want to see you understand the production-focused nature of the role and how you work with others.

2. Which CAD software have you used, and when would you choose AutoCAD over Revit?

Why they ask: They need to know which tools you are productive in and whether you understand their purposes.

3. How do you organise a drawing file, including layers, blocks and external references?

Why they ask: Well-organised files save time and prevent errors across the team.

4. Can you explain how scales, model space, paper space and viewports work when producing a drawing sheet?

Why they ask: Correct presentation is a basic but essential skill, and mistakes cause real problems on site.

5. What are the standard conventions you follow on construction drawings, such as line weights, dimensioning and revisions?

Why they ask: Consistency makes drawings readable to contractors and reduces misinterpretation.

6. How do you update a drawing from a markup, and how do you make sure every change has been picked up?

Why they ask: Working from markups is the core daily task of a technician.

7. An engineer's sketch has conflicting dimensions and a wall is shown 150 millimetres thicker on one side than the other. What would you do?

Why they ask: Technicians must query unclear information instead of drawing assumptions.

8. Tell me about a time you found an error in a drawing or a set of information before it was issued.

Why they ask: Attention to detail is the key quality for a CAD technician.

A sample answer to question 1

What does a typical day as a CAD technician involve?

My day starts by checking the project tracker and any emails from architects, engineers or the project lead about changes. I normally have several live drawing tasks, so I prioritise by deadline. I might spend the morning turning a marked-up sketch into a CAD plan, such as a floor layout or a set of sections, working from the company template with the correct layers, line weights and title block. I update existing drawings from redlines, checking each change against the mark-up and noting revisions. Before anything leaves my desk I run my own check, looking at dimensions, annotation, scales, drawing numbers and references. I then export to PDF and DWG using the project naming convention and upload it to the shared folder or common data environment. During the day I ask questions when information is missing and attend short team catch-ups. The job is about accuracy, consistency and communicating clearly with the people who rely on the drawings.

Common mistake to avoid: Saying you simply draw what you are told; forgetting checking and file control

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the CAD Technician interview questions page. The first five are free, no sign-up needed.