The “Senior” Dev Who Doesn’t Know SQL is a Liability

Title: The “Senior” Dev Who Doesn’t Know SQL is a Liability

URL Source: https://blog.stackademic.com/the-senior-dev-who-doesnt-know-sql-is-a-liability-d1188440c3b9?source=rss------programming-5

Published Time: 2026-04-17T12:03:48Z

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# The “Senior” Dev Who Doesn’t Know SQL is a Liability | by Bug to Solution | Apr, 2026 | Medium

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# The “Senior” Dev Who Doesn’t Know SQL is a Liability

## Stop hiding behind your ORM and start reading your EXPLAIN ANALYZE output.

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I’ve been a contractor for 12 companies in the last 4 years. From FinTech giants to “disruptive” AI startups, the pattern is identical: the team is burning $15k a month on RDS instances because no one knows how a B-tree works.

You call yourself a Senior Backend Engineer, but you treat the database like a magical black box. You write `User.all()` in a loop and wonder why the API response takes 4 seconds. You add a microservice to "handle the load" when a single composite index would have solved the problem for