The short answer
A Meta-style mock interview is a practice round shaped like the interviews Meta is commonly reported to run: coding rounds that often hold two problems in about 40 minutes, a system or product design round for mid-level and senior roles, and a behavioural round. On Revvox each round is 60 minutes live with an experienced engineer, scored 1 to 5 on five skills, with a written report within 24 hours. We are not affiliated with Meta and do not claim our interviewers work there.
What a Meta-style loop usually includes
Meta's careers site publishes preparation guides for software engineering candidates. The process typically starts with a recruiter call and a technical screen, then a full loop. That loop usually includes two coding interviews, a design interview for mid-level and senior candidates, and a behavioural interview about how you work.
Coding rounds are known for pace: it is common to get two problems in one round, so there is little time for a slow start. Interviewers expect working code, a clear account of its cost, and tests you walk through yourself. Design rounds come in two flavours, system design and product design, the second focusing more on the API and the user-facing flow.
The behavioural round looks at how you handle conflict, ambiguity and growth, and at the scope of what you have owned. Formats change by level and over time, and some loops now add other round types; your recruiter has the details of yours.
How it is scored
After the 60-minute round, the interviewer marks each line below 1 to 5 in your written report, due within 24 hours, with notes on what you said and wrote behind each mark. The verdict is one of Strong hire, Hire, Lean hire, Lean no hire or No hire.
| Skill (1 to 5) | What the interviewer looks for |
|---|---|
| Problem solving | You recognise the pattern quickly and reach an optimal or near-optimal approach without long detours. |
| Code quality | Bug-free, complete code written at pace, with no hand-waving. |
| Testing and edge cases | You dry-run your code on a small case and catch your own mistakes. |
| Complexity | Correct cost, stated without being asked. |
| Communication | Brief, clear narration that keeps the interviewer with you without slowing you down. |
| Skill (1 to 5) | What the interviewer looks for |
|---|---|
| Requirements and estimates | You scope the product to its core features and size it quickly. |
| High-level design | Clear APIs and a request path for the main user flows. |
| Data and storage | A data model that fits the feed, messages or media in question, and how it is partitioned. |
| Scale and trade-offs | You handle hot users, fan-out and failure, and say what you would trade for speed. |
| Communication | You drive, check in and land a complete design. |
| Skill (1 to 5) | What the interviewer looks for |
|---|---|
| Structure | Specific stories told in a few minutes, with clear actions and results. |
| Ownership | Scope that matches the level you are aiming for. |
| Collaboration | Conflict handled directly and respectfully, with the outcome. |
| Impact | Results you can describe, for users or for the team. |
| Self-awareness | Honest about feedback and growth. |
Practice questions in a Meta style
Written by us in the style of these rounds, not taken from real interviews. Try the coding ones in pairs, 20 minutes each.
- Given a string with brackets and letters, remove the fewest brackets to make it valid.A stack or two passes, and clean handling of nested cases.
- Find the k points closest to the origin from a long list of points.A heap of size k, or quickselect, with the cost of each.
- Given a tree where each node has a value, return the values column by column from left to right.Breadth-first search with column indexes and ordering within a column.
- Check whether an array has a subarray of at least two elements whose sum is a multiple of k.Prefix sums with remainders in a hash map.
- Design the backend for live comments on a video stream.Fan-out to many viewers, ordering, rate limits and what happens at a sudden spike.
- Design a news feed that mixes posts from friends and groups.Push versus pull, ranking at read time and caching.
- Tell me about a conflict with a peer about a technical decision. How did it end?Directness, listening and a clear outcome.
How to rehearse it with a Revvox package
Most people take the Standard package: three 60-minute rounds. Ask for two problems per coding round so you practise the pace. You get a report after every round.
- Round one: coding, two problems. Two medium problems back to back, on a shared pad, with tests.
- Round two: system or product design. Design a feature people use every day, from API to storage, at your level.
- Round three: behavioural. Conflict, ambiguity, feedback and the biggest thing you have owned, with follow-ups.
How to prepare
- Practise timed pairs: two medium problems in 40 minutes, including tests. Speed comes from recognising patterns, not rushing.
- Get very comfortable with arrays, strings, hash maps, trees, graphs and intervals, which come up often in this style.
- Write code that compiles in your head: correct syntax, no placeholders, clear names.
- For design, practise everyday products: a feed, a messenger, a photo upload flow, a live comments feature.
- Prepare stories that show the scope of your work growing, and a time you resolved a conflict with a peer.
Common mistakes in Meta-style rounds
- Spending 25 minutes on the first problem and never reaching the second.
- Writing near-correct code and leaving the bugs for the interviewer to find.
- Designing infrastructure in a product design round without defining the API and the user flow.
- Behavioural answers with small scope when the role expects larger ownership.