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Microsoft Interview Guide

Microsoft has one of the more engineering-friendly loops at FAANG-tier companies. Less algorithmic theatre than Google, less behavioral weight than Amazon — they want to see clean code, solid fundamentals, and someone who learns quickly.

Compensation (US, approximate)

LevelBase + Bonus + Stock
SDE I (L59-60)$170K – $210K
SDE II (L61-62)$230K – $300K
Sr. SDE (L63-64)$310K – $420K
Principal (L65-67)$450K+

Interview Process

  1. Recruiter Phone Screen (20–30 min) — Resume walk-through, motivation, level fit. No coding.

  2. Technical Phone Screen (45–60 min) — One coding question on a shared editor (CodeShare or Teams). Expect a medium-difficulty problem and follow-up optimizations.

  3. Onsite Loop (4–5 interviews, ~4 hours)

    • Coding (2–3 rounds) — medium to hard problems, often with an emphasis on edge cases and clean code over clever tricks.
    • Design (1 round, varies by level) — OOP design for SDE I/II, system design for SDE II+ and Senior.
    • Behavioral / "AS-AP" (1 round) — the As-Appropriate interview. The AS-AP is typically the hiring manager or a senior IC; this person has unusual influence over the hire/no-hire decision.

What Microsoft Actually Evaluates

Microsoft scores candidates on roughly four axes:

  • Problem solving — can you decompose a problem and reach a working solution?
  • Coding — is your code readable, correct, and reasonably efficient on the first pass?
  • Design — for senior roles, can you reason about scaling and tradeoffs?
  • Growth mindset — Microsoft genuinely cares about this; they want learners, not finished products.

Interview Tips

  1. Optimize for clarity, not cleverness. A clean O(n log n) solution with good variable names will out-score a one-liner that interviewers have to decode.

  2. Talk through your thinking before coding. Microsoft interviewers tend to score down candidates who code in silence — even if the code is correct.

  3. Handle edge cases explicitly. Empty input, single element, negative numbers, integer overflow. Naming them shows engineering maturity.

  4. For senior roles, prepare OOP and system design. Class design (LRU cache, parking lot, file system), then larger system designs (distributed cache, chat app, URL shortener).

  5. Show curiosity in the AS-AP interview. Ask thoughtful questions about the team, the codebase, the tradeoffs they've made. The AS-AP often weighs cultural fit heavily.

Topics That Come Up Often

  • Strings & Arrays — substring problems, two pointers, sliding window.
  • Trees & Graphs — traversals, BFS/DFS, lowest common ancestor.
  • Dynamic Programming — for SDE II and above; classic 1D and 2D DP.
  • Design — LRU cache, file system, threadsafe queue, simple distributed key-value store.

Reference