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The private, engineer-first career memory system. Built to help you track applications, reflect on interviews, and build a personal knowledge base.

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Designed and developed byMehedy Hasan Ador

INTERVIEW

Interview OS

Job application tracking and interview preparation workspace.

Interview OS

Home About Features Pricing Community Careers Resources Blog Contact

Interview OS

The private, engineer-first career memory system. Built to help you track applications, reflect on interviews, and build a personal knowledge base.

Product

Manifesto
Features
Blog
Documentation

Legal

Support

Contact Us
Email Support

Designed and developed byMehedy Hasan Ador

INTERVIEW

Community Interview Questions

Explore interview questions shared by job seekers and professionals, then use them to prepare with more context.

medium

18/04/2026

How do ES Modules differ from CommonJS in Node.js, and what are the migration challenges?

TypeScriptModulesNode.js+1

by Mehedy Hasan Ador

hard

18/04/2026

What are TypeScript utility types and how do you create custom mapped types?

TypeScriptUtility TypesMapped Types+1

by Mehedy Hasan Ador

medium

18/04/2026

Explain TypeScript type narrowing and the different ways to narrow types at runtime

TypeScriptType NarrowingType Safety

by Mehedy Hasan Ador

hard

18/04/2026

How do TypeScript generics work with constraints, and when would you use keyof with generics?

TypeScriptGenericsType Safety+1

by Mehedy Hasan Ador

medium

18/04/2026

What are optimistic and pessimistic locking in databases, and when would you use each in a real application?

DatabaseConcurrencyLocking+2

by Mehedy Hasan Ador

hard

18/04/2026

Explain ACID properties in databases and how they apply to a real-world money transfer scenario

DatabaseACIDTransactions+2

by Mehedy Hasan Ador

hard

18/04/2026

How would you design a caching strategy for a high-traffic web application with stale data tolerance?

System DesignCachingRedis+2

by Mehedy Hasan Ador

hard

18/04/2026

Design a rate limiter for a distributed system — what algorithms exist and which would you choose for an API gateway?

System DesignRate LimitingDistributed Systems+2

by Mehedy Hasan Ador

hard

18/04/2026

How would you design a real-time notification system that delivers millions of notifications per day?

System DesignReal-timeWebSocket+2

by Mehedy Hasan Ador

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