Meta E4 Loop
E4 is the first Meta level with a dedicated design round, and that round plus behavioral carries the level call. Stories that show you only built someone else's design tend to read as E3.
The Rounds
Screens
- Recruiter CallCovers your background and recent projects, and sets your product or infrastructure track.Practice Recruiter Call
- Online AssessmentSome candidates only: a proctored CodeSignal problem built in stages that unlock as you pass each one. · 90 minPractice Online Assessment
- Technical ScreenTwo coding problems in a shared editor with an engineer, with no code execution. · 45 minPractice Technical Screen
Onsite
- CodingTwo problems in about 40 minutes, written without running the code, then traced and tested by hand. · 45 minPractice Coding
- AI-Enabled CodingUsually replaces the second coding round: work through a multi-file codebase in CoderPad with an AI assistant. · 60 minPractice AI-Enabled Coding
- System Design or Product ArchitectureOne round on your track: distributed backends for infrastructure, or APIs, data models, and client-server flows for product. · 45 minPractice System Design or Product Architecture
- BehavioralConflict, growth, ambiguity, results, and communication, with follow-ups on what you did yourself. · 45 minPractice Behavioral
What the E4 Loop Weighs
- A design you drive from requirements through trade-offs with little prompting.
- Stories where you spotted the problem and proposed the fix yourself.
- Steady coding pace: two problems per round with edge cases covered.
Sources
Last checked Nov 2026. Loops vary by team and change over time, so confirm the details with your recruiter.
- Meta Careers: Preparing for Your Full Loop Interview
- Meta Careers: Preparing for Your Technical Screen
- Hello Interview: Meta E4 Software Engineer Interview Guide
- Hello Interview: Meta E6 Software Engineer Interview Guide
- interviewing.io: Meta Interview Process and Questions
- Austen McDonald: Meta's Interview Loop Structure