Denis De O
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Defect leakage: the metric that tells you if your testing actually worked
A bug in production is not just a bug. It's a signal. Here's what it's telling you — and why you should listen.
Apr 10
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Denis De O
Recent posts
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The AI era doesn't shrink QA. It makes us indispensable.
After many years of testing enterprise systems, APIs, and everything in between, I've never felt more certain that our craft is entering its defining…
Apr 4
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Denis De O
1
Reflection: What I Would Learn If I Started QA Today
A senior tester's honest letter to their younger self about skills, mindset, and what actually matters.
Mar 29
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Denis De O
Most QA Engineers Don’t Understand the Product
And that’s where real quality starts to break
Mar 28
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Denis De O
1
Your LinkedIn Profile Is Not a Resume
It’s your most important career asset and most people are using it wrong
Mar 27
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Denis De O
1
Azure DevOps Test Plans: The Tool That Separates Organized QA from Chaos
Why most QA teams struggle without structured test management
Mar 26
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Denis De O
1
🚀 Finding the Best Playwright Locators in Seconds with Codegen
Use Playwright Codegen and the Inspector to generate stable locators automatically and speed up your automation workflow.
Mar 6
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Denis De O
Mastering Playwright Locators: The Syntax Rules Every QA Should Know
How understanding locator syntax can make your automated tests more reliable and easier to maintain.
Mar 5
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Denis De O
Why getByRole() Is Better Than getByText() in Playwright
how this one change can make your tests more stable, readable, and professional
Feb 21
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Denis De O
AI-Assisted Testing: The Skill That Will Define Modern QA
Most people hear "AI in testing" and imagine robots running tests by themselves. That's not it.
Feb 11
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Denis De O
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Denis De O
Senior QA professional with 20+ years of experience. I write about TestRail administration, QA governance, and automation strategy — focusing on real-world systems that scale.
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