Skip to content

EFEngineering Foundry

Companies Mock interviews

Checking account…

Loading Engineering Foundry…

EFEngineering Foundry

Prepare. Practice. Build. Grow.

A community-built home for the engineering interview journey.

Learn

DSA System Design ML System Design Low-Level Design Behavioral

Practice

Coding practice Mock interviews Challenges

Companies

Company guides Interview experiences

Career & resources

Interview execution guide Salary negotiation Resume self-review Resources Playground

Engineering Foundry

Community Blog About FAQ Help Changelog ContactDiscord

Legal

© 2026 Engineering FoundryBuilt for engineers, with engineers.engineeringfoundry.dev@gmail.com

Practice

Build skills. Make progress.

PracticeFind interview questions
- All questions75
RoadmapChoose role, then time
- Study plans
- Topic map
ReviewRefresh concepts and syntax
- Pattern index
- Interview strategy

Stay consistent

A little practice goes a long way.

Topic dependency view

DSA Topic Map

18 connected topics

Follow the prerequisite order for core data structures and patterns, then open focused practice sets from the map.

Question counts derived from the current database

Use this focus in the Plan Builder

Loading interactive roadmap…

New to interview preparation? Start with Arrays & Hashing.

Recommended sequence

Core Interview Roadmap

18 topics · dependencies flow downward

FoundationCore patternsAdvancedDrag to pan · scroll or use controls to zoom

78%

Foundation

Sliding Window

Maintain just enough state for a contiguous range as its boundaries move.

Strict prerequisites

Key interview patterns

Fixed window
Variable window
Incremental state

Practice 7 questions