Toast
Software EngineerComplexAug 6, 2026

Enforce compliant age checks at checkout

Regulated checkout requirements can make a straightforward sale a hard systems commitment.

Strong enforcement and low-friction service may require different interpretations of the same transaction moment.

I need the system to protect us without turning every busy checkout into a debate.

Linh Tran · Bottle Shop Owner

Operates several stores where age-restricted sales are a core part of daily revenue.

What pulls against what

  • compliance certainty vs. checkout speed
  • native control vs. vendor acceleration
  • device diversity vs. uniform enforcement
  • audit completeness vs. privacy-sensitive data handling
  • launch timing vs. one-way architectural commitment

What is at stake

The architecture must prevent prohibited sales and produce defensible evidence. A poor path risks either blocked commerce or an unacceptable compliance gap

Why Toast

At Toast, expansion into new retail workflows often makes correctness and operational continuity inseparable.

Written for

Security-minded systems engineerTransaction platform builderCompliance-critical product engineer

This is the setup. The work is inside.

Running it puts you in the room: the full situation and its constraints, stakeholders who push back in their own words, and the decisions that are yours to make. What you produce becomes a Day One Plan — work you can show someone instead of describing.