Real interview prep, organized by company and level

Mock loops calibrated to the actual rubric of the company you're interviewing at. Every question cites a public source — Glassdoor, hellointerview.com, IGotAnOffer, 1Point3Acres. Free first mock, $9/mo after.

  • 35
    Companies
  • 52
    Roles & levels
  • 100%
    All questions sourced
  • Free
    First mock

Why per-company prep beats generic FAANG drills

A generic "FAANG interview prep" plan averages across companies whose loops are not actually similar. Google L4 has no system design round. Meta E4 always does. Amazon SDE2 fails coding-strong candidates on Bar Raiser if Leadership Principles don't surface. A practice loop that doesn't load the right rubric trains the wrong signals.

Each combo below practices against the documented rubric for that specific company × level. Questions are sourced from public reports — Glassdoor, IGotAnOffer, hellointerview.com, Phil Shan's Medium, LeetCode Discuss, 1Point3Acres, Zhihu interview reports. No fabricated questions. No "we polled 10,000 candidates" stats. If a question is on the page, you can click through to the source thread it came from.

By cluster

How prep differs by company cluster

Tech-job clusters have meaningfully different filters even when they all 'test coding.' Pick the one closest to your target before locking in a study plan.

  • FAANG

    Google · Meta · Amazon · Apple · Microsoft

    The most-studied cluster, but not interchangeable. Each runs a distinct rubric.

    • Google: Googliness + scale-aware reasoning
    • Meta: Move Fast + experiment-driven shipping with metric ownership
    • Amazon: 16 LPs scored continuously across the loop with Bar Raiser veto
    • Apple: team-specific (Photos vs Health vs Hardware run different loops)
    • Microsoft: growth mindset + customer impact + Azure-native stack signals
    FAANG comparison guide
  • AI labs

    OpenAI · Anthropic · Google DeepMind

    Highest-paid cluster in tech with the highest filter density. PhD not required for general RE roles — depth equivalent to publication record substitutes.

    • OpenAI: production deployment + paper deep-dive rounds
    • Anthropic: values authenticity (non-technical values round is determinative)
    • DeepMind: 'The Quiz' — rapid-fire fundamentals on math/stats/RL/CS theory
    • Comp range: $300K (DeepMind UK) → $1.28M (OpenAI L6) per Levels.fyi
    AI labs guide
  • Quant firms

    Citadel · Jane Street · Two Sigma · HRT · DE Shaw · Optiver

    Highest absolute comp at senior. Math + probability rigor is the cross-firm baseline; firm-specific filters layer on top.

    • Citadel: commercial impact + pod alignment
    • Jane Street: least PhD-gated — Figgie game + Bayesian reasoning
    • Two Sigma: walk-forward backtest critique + sustainable culture
    • HRT: C++ depth + n→N proof skills
    • DE Shaw: pedigree-sensitive + adversarial PhD thesis defense
    • Optiver: 80-in-8 mental math filters ~50%+ of trader applicants
    Quant firm comparison
  • Fintech

    Stripe · Coinbase · Plaid · Robinhood · Bloomberg

    Different sub-domains but shared signals: idempotency, ledger-based design, regulatory awareness. Off-by-one in financial calc is hard-fail at all five.

    • Stripe: payments rails B2B integration depth
    • Coinbase: crypto-native architecture + custody
    • Plaid: bank-linking infrastructure + OAuth flows
    • Robinhood: consumer trading + order routing
    • Bloomberg: terminal + data + Code Review round
  • UK / European fintech

    Wise · Monzo · Revolut

    Distinct from US fintech. London-based with UK Skilled Worker visa pathway. Take-home formats dominate over whiteboard.

    • Wise: 'product engineer' philosophy + conversational system design
    • Monzo: skips whiteboard entirely — async take-home + Go-heavy backend
    • Revolut: 4-8h take-home with thread-safe SOLID + unit tests required
  • Tier-1 US unicorns

    Stripe · Airbnb · Uber · Notion · Figma · Snap · Lyft

    Mature private companies with established loops. Each has at least one signature round.

    • Airbnb: Host interviews by non-engineers + code review round
    • Uber: machine coding + Bar Raiser (modeled on Amazon)
    • Lyft: 90-min Laptop Programming Test (open-internet, IDE-based)
    • Notion: ~4h interview block with culture-fit weight
    • Figma: Web frontend + C++ + WebAssembly knowledge expected
    • Snap: Kind/Smart/Creative scored across every round
  • Big-tech adjacent

    TikTok · ByteDance · Snowflake · Databricks · Cloudflare · Palantir

    Each has at least one distinctive round-format quirk that catches generic preppers off-guard.

    • TikTok: algorithm-heavy (LeetCode-medium, 2-3 problems timed)
    • ByteDance HQ: 15-min Hard DP at HM round + Mandarin requirement
    • Snowflake: 2h combined DSA + system design phone screen
    • Databricks: dedicated concurrency / multithreading round + VP veto
    • Cloudflare: 'Orange Cloud' 30-min strict behavioral + AI-assisted coding
    • Palantir: Decomposition + Re-engineering rounds + 12-month rejection cooldown

How Applr's mocks differ from generic LeetCode-style

Most mock interview tools train one signal: can you produce a working solution under time pressure. That's necessary but not sufficient. The candidates who actually convert offers also signal correct trade-off reasoning, behavioral fit per company values, and ability to articulate decisions out loud — and those signals are what most candidates fail on.

Applr loads the documented rubric for the company you're targeting before each session: which behavioral framework gets scored (LP / Googliness / Move Fast / Kind-Smart-Creative / etc.), what stack signals matter (Go for Uber, PHP/Hack for Meta, C++ for HRT/Optiver, JAX for DeepMind), what specific failure modes get flagged (Bar Raiser claim drift, Apple secrecy violation, Cloudflare corporate-speak). Sessions are bilingual (EN + ZH) — useful for international students who want to first-draft in native language before delivering in English.

Practice the loop you're actually facing, against the rubric the company actually uses.

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35 companies · 52 roles & levels

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