Lesson 001 · The job tutorials skip

8 things to know before your first dev job

Small things nobody tells you until your first week. 1 min video · 2 min read

1
Branch names include the ticket number.
That's how Jira and Linear link your pull request to the ticket automatically.
feat/OWD-142-invoice-export
2
Bugs come back.
That's why teams write a failing test before the fix. Once it passes, it stops the bug sneaking back in.
3
Times are stored in UTC.
Local time only appears when it's shown to a user.
2026-10-29T14:00:00Z
4
Migrations only run once.
Edit an old one, and production skips it. Write a new one instead.
5
Git remembers everything.
A deleted secret is still in the history, so the key gets replaced.
6
Big PRs get skimmed.
Small ones, under 400 lines, get a real review.
7
Reviewers can tell when you haven't read your own PR.
Read your own diff first, before you ask anyone else to.
8
Nobody expects you to know it all.
They expect you to ask, with what you've already tried.

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