The Silent Data Loss Bug
A production API is silently dropping 3% of writes. No errors in the logs. Find it, fix it, write the post-mortem.
The Memory Leak
A dashboard app is crashing after 20 minutes of use. Profile it, identify the leak, patch it without breaking existing behavior.
The Flaky Test Suite
A CI pipeline fails randomly on 1 in 5 runs. The team has been ignoring it for months. You're the new hire. Fix it.
The Slow Query
A report that used to run in 2 seconds now takes 4 minutes. No schema changes were made. Diagnose and optimize.
The Race Condition
Two microservices are occasionally writing conflicting data. It only happens under load. Reproduce it, then fix it.
The Undocumented Module
Add a feature to a 6-year-old module with no tests and no documentation. Leave it better than you found it.
// get started