30-minute whiteboard challenge framework

Clarify the challenge

Turn a vague prompt into a bounded problem you can solve in this room.

• Restate the prompt in your own words before you ask anything.
• Cover users, constraints, success, platform, and what is out of scope.
• Confirm one problem statement, then move on.

See also: Clarifying-questions cheat sheet.

Identify users and usage context

Name who you are designing for and where the product shows up in their life.

• Pick a primary user. Mention secondary users only if they change the design.
• Note the setting: device, frequency, time pressure, and who else is involved.
• State the job the user is trying to get done.

Define and prioritize user needs

Show you can rank, not that you can list everything.

• Write 3 to 5 needs or pain points.
• Rank them. Circle the one or two you will solve now.
• Say which need you are deferring and why.

Generate multiple ideas

Diverge before you commit, so the later choice looks considered.

• Name 3 directions, not 3 shades of the same app.
• Vary the product type, platform, or interaction model.
• Keep each idea to a label and one line. Do not draw screens yet.

See also: 10 realistic practice prompts.

Select a direction and explain tradeoffs

Choose in public, with reasons the interviewer can follow.

• Pick one idea and say what you are giving up.
• Tie the choice back to the top user need and a real constraint.
• Name what would make you switch.

Create a user flow

Show the path from intent to outcome before you draw interface.

• Map the happy path in 4 to 7 steps.
• Mark the entry point, the key decision, and the success state.
• Note one error, empty, or edge state if time allows.

Sketch the proposed experience

Make the flow legible. This is not a visual design critique.

• Draw the 2 or 3 key moments as simple frames.
• Label what matters. Use words if drawing is slow.
• Show hierarchy: what is primary and what is secondary.
• Skip color, alignment, and component polish.

Define success metrics

Say how you would know the solution worked.

• Pick 1 primary success metric and 1 guardrail.
• Make them observable. Avoid "users are happy."
• Connect them to the need you prioritized.

Summarize the solution and next steps

Leave a crisp story and a next step the interviewer can remember.

• Restate the problem, the user, the choice, and why.
• Recap the flow in one breath.
• Name what you would prototype, research, or cut next.
• Stop while you still have the room.

See also: Self-evaluation rubric.