LeetCode for Backend Engineers

Algorithm puzzles only cover part of a backend interview. The rest is real systems - slow queries, race conditions, auth, reliability. The best way to practice that is on real broken services: fix an N+1 query, secure an API with JWT, stop a double-charge. HeyDevJob's Backend tickets are exactly that, and each fix becomes a portfolio piece.

Practice these instead

Fix the N+1 QueryBackend Add JWT Authentication to an APIBackend Stop a Double-Charge Race ConditionBackend Add a NOT NULL Column With a Zero-Downtime BackfillBackend

Work through the full set on the Backend projects hub or follow the Backend roadmap.

Practice real Backend work

Fix real broken systems in a live cloud workspace - every fix lands on a portfolio hiring managers can open.

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