Meta Software Engineer Interview Experience — Five Rounds Including AI Coding and a New Agentic System Design Round

Meta·Software Engineer·Apr 2026
OnsiteRejectedhard

The full loop has a new format now — five rounds, and I got the rejection letter a week later.

Round one, behavioral (BQ). Went pretty well — the usual how-do-you-resolve-conflict stuff, plus some talk about impactful projects, especially AI projects.

Round two, AI coding: a card game — find three cards that sum to 15. Split into three steps: find the bug, implement the algorithm, optimize the algorithm. I spent a bit too long on finding the bug, so for the last two steps I mostly gave the direction and let the AI write the code. I finished it in the end and answered all the follow-ups.

Round three, AI coding: maximize unique chars from a word list. Also three steps. This interviewer wanted me to optimize toward the direction he preferred. He asked a lot of questions throughout and didn't leave me any time to actually use the AI, so I ended up writing everything by hand.

Round four, system design: design an online game leaderboard. I did well on this one since I'd just reviewed this exact question not long before.

Round five, AI-enabled system design. This is the new format — it tests agentic system design. My question was to design an agent that automatically triages tickets. I'd spent a week beforehand looking at agent design, and I'd built a similar agent system at work, so I thought I could nail it. I'd previously built a triage agent -> investigate agent -> resolve agent pattern myself. But the interviewer seemed to be steering me toward a ReAct-loop direction instead. A lot of my answers ended up not matching what he was looking for.

Anyway, moving on.

Published

Curated and edited by PracHub

Practice the questions from this interview

Discussion

Sign in to join the discussion. The author is notified of every comment.

Loading comments…

Interview at a glance

Company
Meta
Role
Software Engineer
Rounds
Onsite
Outcome
Rejected
Difficulty
hard
Interview date
Apr 2026
Questions from this interview
2 questions

Real Meta interview experiences

First-hand reports from Meta candidates — the rounds, the questions they were asked, and how it went.

All 125 Meta interview experiences