A useful security engineering exercise asks the candidate to prioritize realistic risks, explain assumptions, and propose implementable changes. Use a fictional architecture rather than asking them to probe a live system.
The assessment should reflect the role’s intended specialty. It is not a certification of security expertise or a substitute for qualified assessment in a high-consequence environment.
Prepare a fictional system packet
Include a simple diagram of an application, its administrative interface, its data store, and its deployment process. Describe who uses each part and what kinds of data exist, using synthetic examples.
Add a few incomplete facts: unclear access ownership, an unreviewed dependency process, or a missing response owner. The candidate should be able to ask questions rather than guess.
Request a prioritized plan
Ask for:
- The most important uncertainties.
- A small set of prioritized risks.
- An immediate containment or clarification step where appropriate.
- A durable engineering or process improvement.
- The teams and decision owners needed.
- A way to verify that the change helped.
Keep the output bounded. Do not ask for a complete audit.
Evaluate the reasoning
| Dimension | Useful evidence |
|---|---|
| Context | Connects risk to assets, access, and consequences |
| Prioritization | Explains why one issue deserves attention before another |
| Feasibility | Proposes changes the fictional team could implement |
| Collaboration | Names dependencies and decision owners |
| Verification | Describes how to check the improvement |
| Limits | Identifies where specialist help or more information is needed |
NIST’s SSDF encourages risk-based adaptation rather than treating its practices as a universal checklist. That principle supports a discussion of priorities, not a contest to list the most controls. NIST SSDF.
Introduce a constraint
Tell the candidate that a proposed change would delay an important release. Ask them to explain options and the decision that leadership needs to make.
Look for clear tradeoffs and appropriate escalation. Do not reward either automatic approval or automatic blocking without reasoning.
Keep the exercise safe and fair
Use no credentials, private customer records, or live targets. Share the expected format and permitted tools. Record evidence against the agreed role requirements.
Pair this exercise with the first security engineer mandate and anchored interview scorecard. Discuss a technical search with Refery.