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Targets/Meta

Software Engineer

Meta · Mid-level (E4)

Research from Sep 65 rounds, none tried
How did it actually go?

Recommended next: your first attempt

Do the Technical coding screen round.

A complete first attempt shows where you stand before any narrow practice starts.

Set up this round →Rehearse the full day
Length45 min · Mid-level (E4) level

The loop

5 rounds · 3 h 45 min

Pick a round to see what it asks of you and where you stand on it.

Technical coding screen

Deliver two clear solutions within the technical window while making the reasoning and correctness visible.

Coding · 45 minSet up this round →
Not tried yetNo attempt yet.

What strong sounds like

  • Reach a complete first solution while retaining time to solve and check the second.
  • Explain the algorithm and why it meets the constraints before implementation.
  • Produce coherent implementations for both requested problems.
  • Manually trace edge cases and state time and space complexity for each.

Expect to be pushed on

Can you reduce auxiliary space?
Which edge case would break the first draft?

Shapes of problem you may get

  • First algorithmic problem with explanation and verification
  • Second independent problem with explanation and verification

How to prepare

  1. 01
    Set a two-problem time plan

    Prepare a 45-minute split that protects time for both problems. Reserve time for requirements, one implementation, a trace, and complexity for each. Include a short switch point if the first problem stalls.

    The supplied research reports roughly two coding problems in about 40 minutes, within a conversation of about 45 minutes. A visible pace supports both completeness and verification.

    Company researchMeta-authored Software Engineer Full Loop Guide, public mirrorMeta E4 full-loop pass: coding, AI coding, design and behavioralMeta SE2 technical screen and assessment experience

A first attempt takes the full 45 minutes.

What this loop tests

Researched 27 days ago

Meta E4 preparation combines fast algorithmic coding, a codebase extension and debugging round, system or product design, and behavioral evidence. Prepare two clear solutions within a traditional coding interview, then practice reading unfamiliar code and validating incremental changes. The design bar is a coherent end-to-end service with concrete trade-offs. Behavioral answers must show conflict resolution, growth, ownership, and measurable impact.

They reward

  • Fast, complete solutions
  • Independent verification
  • Coherent product trade-offs
  • Specific growth and impact

What to avoid

  • Do not sacrifice the second task to polish the first.
  • Do not assume execution or AI is available.
  • Do not rely on familiarity with a problem title.
  • Do not treat any class of bug as automatically acceptable.
  • Do not replace the whole module before understanding it.

How sure we are

Worth redoing if you hear something from the recruiter that contradicts this.

Confirmed · 9

Attempts

Every session saved against this target, newest first. Standings live on the round cards.

All attempts in History →

Technical coding screen, Algorithmic coding, Codebase coding and debugging, System or product design, and Behavioral: growth and impact have no attempts yet.

  • 02
    Select broad algorithm practice

    Review arrays, hash tables, stacks, queues, trees, graphs, heaps, sorting, recursion, and divide-and-conquer. For each area, prepare one invariant and one edge-case pattern before attempting an unseen problem.

    The Meta-authored guide emphasizes common data structures and broad coverage. This round also evaluates communication, problem solving, coding, and verification as separate signals.

    Company researchMeta-authored Software Engineer Full Loop Guide, public mirrorMeta E4 full-loop pass: coding, AI coding, design and behavioral

  • 03
    Rehearse verbal verification

    Practice stating requirements, comparing one alternative, and tracing each solution without relying on execution. Prepare concise language for time and space complexity, empty input, duplicates, and boundary cases.

    The research reports that execution conditions can differ across stages. Manual verification is therefore a useful preparation choice, without assuming a fixed company rule.

    Company researchMeta E4 full-loop pass: coding, AI coding, design and behavioral

    • Then try the round

    You have a written two-problem time plan, selected coverage areas, and a short explanation pattern for requirements, invariant, complexity, and edge cases.

    Resources to focus on
    • [PDF] Full Loop Interview Guide - Cloudfront.net

      “Coding Interview,” especially “What do we look for?” and “How to prep.” Access is through a CloudFront-hosted PDF.

      Use its guidance on requirements, solution comparison, organized code, complexity, edge cases, and broad data-structure coverage.

    Do

    • Keep explanations short enough to preserve implementation time.
    • Check the first solution before switching problems.

    Avoid

    • Do not sacrifice the second task to polish the first.
    • Do not assume execution or AI is available.
    • The Meta-authored full-loop guide describes coding, design and behavioral conversations lasting about 45 minutes.
    • Traditional coding preparation targets about two problems in 40 minutes of technical work.
    • The guide evaluates communication, problem solving, coding and verification as distinct signals.
    • A US E4 candidate completed a traditional coding round and a separate AI-assisted codebase repair and extension round.
    Likely · 3
    • The guide directs candidates to prioritize common data structures and breadth rather than dynamic programming.
    • Design may focus on systems or product architecture, depending on the position.
    • Preparation should include independent code review and small verified edits as well as timed algorithmic problem solving.

    Worth asking them

    Questions that close the gaps above.

    Is this role’s design emphasis product architecture or infrastructure?
    What does independent E4 ownership look like on this team?
    Which engineering change recently had the largest measurable user impact?

    Research status

    Collected Sep 6. If the recruiter tells you something this brief contradicts, correct it after the interview and the brief updates.

    Correct this brief