Startup SOP Library
Engineering and security · Free SOP

Code Review SOP.

A fast code-review standard that protects correctness, security, maintainability, and shared context without creating a pull-request graveyard.

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Operating standard

Control without the corporate sludge.

Owner

The change author owns readiness; the assigned reviewer owns the review decision.

Response

First review within four working hours for normal changes and one hour for an agreed urgent change. Authors respond within one working day.

Metric

Median first-review time under four working hours with a declining escaped-defect rate.

Why this exists

If nobody owns the process, the founder owns every emergency.

Purpose

Catch meaningful defects and spread system knowledge while keeping changes small enough to review quickly.

When it applies

Use for all production code, infrastructure, migrations, security rules, automation, and material configuration changes before merge.

Required inputs

Do not start blind.

Linked task or decision
Small reviewable change
Description of behavior and risk
Passing automated checks
Test and rollback evidence where relevant
Exact steps

Trigger to outcome. No meeting required.

  1. 01

    Keep the change focused and split unrelated work before requesting review.

  2. 02

    Self-review the diff and remove debug code, secrets, dead code, and accidental files.

  3. 03

    Write what changed, why, how it was tested, risk, and any deployment notes.

  4. 04

    Request a reviewer who understands the affected area and a security reviewer when required.

  5. 05

    Review behavior, edge cases, data handling, tests, readability, operations, and rollback risk.

  6. 06

    Label feedback as blocking, required clarification, or optional improvement.

  7. 07

    Resolve or explicitly discuss every blocking comment; rerun checks after material changes.

  8. 08

    Obtain approval, merge using the team strategy, and monitor the associated release.

Decision and approval points

Authority must be explicit.

One qualified reviewer approves standard changes.
Authentication, authorization, payments, secrets, customer data, destructive migrations, and critical infrastructure require a second qualified or security reviewer.
Authors cannot approve their own changes.
Escalation path

Know when to stop.

If review is blocked by disagreement, request a short written decision from the technical owner. Security or data concerns cannot be overridden only to meet a release date.

Records to keep

If it is not recorded, it did not happen.

Pull request
Linked task or decision
Automated check results
Review comments and approvals
Merge commit
Follow-up issues
Customize before use

Make the generic parts real.

✓Define protected branches and merge strategy.
✓List changes requiring specialist review.
✓Set maximum change-size guidance.
✓Name required automated checks.
✓Define urgent-review handling.
Common startup mistakes

How teams break the process.

01

Reviewing style while missing behavior and risk

02

Sending enormous changes that nobody can reason about

03

Approving because tests pass without reading the change

Write it before the expert leaves

Make the process executable.

Download it, assign the real owners, set the thresholds, and test it with someone who did not write it.

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Planning template only. Adapt it to your contracts, risk, and jurisdiction. Obtain qualified professional advice where required. Last reviewed 2026-10-04.