# OfferHack

> OfferHack is an independent, company-shaped interview-practice workspace for engineering, product, management, research, and AI candidates.

OfferHack organizes public evidence, reported interview patterns, and original practice exercises into runnable code, structured answers, diagrams, and contextual coaching. It is not affiliated with the companies it covers. Its material is not official, leaked, recalled, guaranteed, or a promise of interview outcomes.

## Start here

- [Runnable Anthropic web crawler exercise](https://offerhack.io/practice/anthropic-web-crawler?utm_source=llms_txt&utm_medium=referral&utm_campaign=anthropic-crawler-paid-intent&utm_content=crawler-practice): Free same-host crawler practice with a Python starter and browser-based checks; no account is required for the first pass.
- [Anthropic distributed mode and median practice](https://offerhack.io/questions?company=anthropic&role=engineering&question=anthropic-code-2&utm_source=llms_txt&utm_medium=referral&utm_campaign=anthropic-distributed-stats&utm_content=statistics-practice): A runnable browser exercise for exact statistics across sorted shards, including a k-way merge starter and checks.
- [Public interview question bank](https://offerhack.io/questions): Browse every question title and inspect complete free previews across company and role filters.

## Company and role paths

- [Frontier AI engineering practice](https://offerhack.io/engineering/ai-labs): Coding, systems, debugging, machine learning, communication, and values practice for selective AI-lab roles.
- [Frontier AI product-manager practice](https://offerhack.io/pm-interview/ai-labs): Product judgment, execution, AI depth, safety, leadership, and behavioral practice.
- [System-design learning path](https://offerhack.io/learning/system-design): Structured system-design lessons and practice workspaces.

## Evidence, access, and pricing

- [Editorial method and evidence limits](https://offerhack.io/about): How OfferHack separates primary sources, reported patterns, and original exercises.
- [Premium plans](https://offerhack.io/pricing): Free access and paid plan comparisons, renewal terms, included coaching credits, and cancellation details.
- [Anonymous practice account](https://offerhack.io/signup): Create a private workspace without a display name or public profile.

## Optional

- [XML sitemap](https://offerhack.io/sitemap.xml): Complete index of public OfferHack pages.
- [Robots policy](https://offerhack.io/robots.txt): Public crawler access and private-route exclusions.