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Backend Interview Kit · contentintech

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FREE LAUNCH · 4 WORKED EXERCISES

Backend Interview Kit

Work through API, SQL, reliability and concurrency decisions with concrete failure cases.

Your curriculum

API correctness

01Make retries safe

Database reasoning

02Paginate a changing dataset 03Prevent overselling inventory

Reliability

04Build a reliable job worker

What you will practise

Design predictable API contracts
Diagnose SQL and concurrency issues
Build safe retry and background-job flows

Each exercise includes a walkthrough, follow-ups and a self-review rubric. These are original practice scenarios, not reported company interview questions.

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