marketing-engineer-playbook

The marketing engineer playbook, runnable: five chapters on building acquisition paths that survive the week they were built — the method, distribution that leaves a trace, scope and pricing, tests with a kill rule, and the measurement arithmetic that decides whether a result is readable at all.

npx -y marketing-engineer-playbook            # chapter list + commands
npx -y marketing-engineer-playbook read 5     # measurement and kill rules
npx -y marketing-engineer-playbook read kill  # the chapter that matches "kill"
npx -y marketing-engineer-playbook links      # the live pages behind the method

Chapters

1. The method — pick the artifact that outlives the week; the path, not the campaign.
2. Distribution that leaves a trace — URLs, package versions, open diffs, crawl signals.
3. Scope and pricing — what a fixed package contains, and what is out of scope in writing.
4. Tests with a kill rule — decide before the data arrives.
5. Measurement and kill rules — sample size per arm, the Wilson interval, the rule of three, the four lines of a kill rule.

Numbers inside, with their arithmetic

Base rate 3%, lift +20% to detect, two-sided 5% at 80% power → 13,914 observations per arm (~27,800 in total). The same calculation runs in the CLI on npm: npx -y marketing-mindset sample --base 0.03 --lift 0.2. The interval and the rule of three ship as a free browser tool: https://axelfreeman.github.io/marketing-mindset/tools/kill-rule-calculator.html

Work with me

• Offer and packages: https://axelfreeman.com/marketing-engineer.html — Sprint $900, Engine $1,900/month, Full build $2,900.
• What each package buys, compared with a freelancer, an agency retainer and a full-time hire: https://axelfreeman.com/marketing-engineer-cost.html
• Growth engineer for hire: https://axelfreeman.com/growth-engineer-for-hire.html
• Every artifact of this build with a live link: https://axelfreeman.com/proof.html
• Free tools: https://axelfreeman.github.io/marketing-mindset/tools

Source repository: https://github.com/axelfreeman/marketing-engineer-playbook (MIT)