Write bug reports that get fixed fast
Hey Junior Engineers! If you've ever reported a bug and gotten back "can you add more info?" (or worse, silence), it's not because you did something wrong. Most bug reports fail for one reason: they don't make the next step obvious.
The best bug reports are basically a gift. They reduce guesswork, lower stress for whoever picks it up, and often get fixed faster.
Core Concept: A great bug report answers 5 questions
When someone opens your bug report, they're trying to quickly answer:
What happened? (actual behavior)
What should have happened? (expected behavior)
How do I reproduce it reliably? (steps)
Where/when does it happen? (environment + scope)
What evidence do we have? (logs, screenshots, IDs)
If your report makes those five things clear, you're already ahead of 90% of tickets.
The "FAST" bug report template
Copy/paste this into your next issue:
F — Facts (actual vs expected)
Actual: "When I click Save, the spinner runs forever."
Expected: "Save completes within a few seconds and I see a success banner."
A — Actions (steps to reproduce)
Go to /settings/profile
Change "Display name" to any value
Click Save
Observe spinner never stops
If you can't reproduce reliably, say that clearly (more on that below).
S — Scope (who/where/when)
Frequency: "3/5 attempts" or "only once so far"
User type: "only admin users" / "new accounts"
Browser/device: "Chrome 122 on Windows 11"
Environment: "staging" / "prod" / "local"
T — Traces (evidence)
Screenshot or short screen recording
Console logs (copy/paste, not a blurry photo)
Request/response snippet, error message, correlation ID, user ID (if allowed)
Timestamp + timezone ("10:43am PT")
This template does two important things:
It makes the bug reproducible (or clearly non-reproducible).
It makes the bug debuggable (evidence points to where to look).
What juniors often miss: "expected" is not obvious
A ticket that says "settings page broken" forces the reader to guess what "broken" means. If you're not sure what the expected behavior is, you can still write it as a question:
Expected: "I believe Save should succeed even if the name has emojis — is that correct?"
That's professional. You're aligning on product behavior instead of arguing.
If you can't reproduce consistently
This is common, and it's not useless. Here's how to report it without hand-waving:
Say it's intermittent ("happened 2 times today, can't force it")
List the conditions that were true when it happened ("after switching accounts", "after leaving tab open 30+ minutes")
Share evidence (IDs, timestamps, logs)
Add a hypothesis (as a guess, not a claim): "Might be related to token refresh"
Intermittent bug reports often become fixable when you include timestamps and identifiers.
Career Growth Tip: Great bug reports build trust fast
This is one of those underrated junior superpowers.
If your issues consistently include reproducible steps and useful evidence, teammates start to trust your work in a quiet, powerful way:
Your tickets get picked up faster
People ask you for context because you're clear
You're seen as someone who reduces team pain
You don't need to be the smartest engineer on the team to be valuable. You can be the clearest.
Resource Spotlight
How to Report Bugs Effectively (Simon Tatham) — The classic guide to writing reports developers can actually use: chiark.greenend.org.uk
Mozilla: Bug writing guidelines — Clear structure and examples (especially "expected vs actual"): bugzilla.mozilla.org
GitHub Docs: Issue templates — How to turn your template into a repeatable form for your whole repo: docs.github.com
Junior Dev Q&A
Q: "I'm scared to file bugs because I don't want to look like I caused the problem. Any advice?"
A: File bugs in a "problem-solving" tone, not a "blame" tone. Focus on behavior and evidence: "Here's what I saw, here's how to reproduce, here's what I expected." Bugs are normal. A calm, detailed report doesn't make you look guilty — it makes you look reliable and team-focused.
Next Steps
Next time you file an issue, use the FAST template and include at least one piece of evidence (screenshot/log/timestamp). You'll be surprised how much faster the conversation moves.
If you want, reply with a bug report you wrote recently (sanitize anything sensitive). I'll help you tighten it so it's easier to fix.
