Meta Staff Software Engineer Interview Questions (2026)
Meta's Staff Software Engineer loop opens with a recruiter call, then a coding screen (2 LeetCode-medium problems), followed by an onsite loop of 2 coding interviews, 2 system design interviews (one high-level, one low-level), and 1 behavioral interview. Glassdoor rates it 3.3/5 difficulty with 61% positive sentiment — above Meta's 56.5% company average — but it takes 61 days to hire on average, double Meta's 31-day company-wide average.
What to Expect
| Stage | Format | Share of Reports | Focus |
|---|---|---|---|
| Recruiter screen | Call | part of 23% phone share | Background, comp expectations |
| Coding screen | Live, 45 min | — | 2 LeetCode-medium problems |
| Coding rounds (x2, onsite) | Live | 29% one-on-one share | Algorithms + code quality |
| System design (x2: high + low level) | Live, 45-60 min | — | Architecture and detailed component design |
| Behavioral | Live, 45 min | part of 10% presentation share | STAR-based leadership stories |
Timeline: ~61 days average (Glassdoor, 18 reports) vs. 31 days company-wide. Positive experience rate: 61% vs. 56.5% company average.
Sample Questions and How to Approach Them
- "Design Messenger" (high-level system design). Start with scale assumptions, then sketch the messaging backbone, storage, and delivery guarantees.
- "Implement a scheduler" (low-level design). Focus on data structures and concurrency control — Meta evaluates code-level design decisions here.
- LeetCode problem requiring KMP, heap, and queue knowledge. Staff-level coding rounds lean into less common algorithms.
- AI-coding round (reported at some loops). A 4-part exercise layering AI-assisted coding on a standard problem — budget time evenly across all parts.
- STAR-based behavioral questions. Meta weighs "navigating ambiguity" and cross-functional collaboration heavily at Staff level.
How to Prepare
Practice one high-level and one low-level design end-to-end, out loud, in under 45 minutes each. Meta's Staff bar rewards candidates who proactively call out trade-offs before being asked.
InterviewBoost.ai's mock interviews run full Meta-style loops (coding + dual system design + behavioral), and Live Interview Assist gives 0.3-second suggested answers during the real thing. 4.9/5 from 50K+ job seekers. Free one-week trial, then $99/mo.
FAQs
How hard is the Meta Staff Software Engineer interview? 3.3/5 difficulty on Glassdoor, with 61% of candidates rating the experience positive — above Meta's company average.
How long does the Meta Staff Software Engineer process take? About 61 days on average per Glassdoor, roughly double Meta's 31-day company-wide average.
Does Meta ask two system design rounds at Staff level? Yes — one high-level design (e.g., "design Messenger") and one low-level design (e.g., "implement a scheduler").
Is there an AI-coding round? Some recent loops report a 4-part AI-coding exercise alongside standard coding rounds — complete all parts, since partial completion is cited in rejections.
What's the stage breakdown for Meta Staff Software Engineer? One-on-one: 29%, phone: 23%, skills test: 13%, presentation: 10%, personality test: 6%, background check: 6%.
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