SDET (Software Development Engineer in Test) - Mid Level Interview Preparation Guide (FAANG Standard)
Software Development Engineer in Test (SDET)
Mid Level
6 rounds
Updated 11/23/2025
This guide is based on general FAANG interview practices and may not reflect specific company procedures.
The SDET interview process for mid-level candidates at FAANG companies typically spans 6-8 weeks and includes 5-7 rounds: a recruiter screening, technical phone screen, 2-3 technical interviews focused on test automation and system design, a behavioral interview, and a hiring manager round. Mid-level SDETs are expected to demonstrate strong coding skills, understanding of test automation frameworks, system design thinking for testing infrastructure, project ownership, and collaboration across development and QA teams.
Interview Rounds
1
Recruiter Screening
25 min4 focus topicsbehavioral
2
Technical Phone Screen
55 min5 focus topicstechnical
3
Test Automation Framework Design Interview
55 min6 focus topicstechnical
4
System Design: Testing Infrastructure at Scale
55 min6 focus topicssystem design
5
Behavioral and Collaboration Interview
50 min6 focus topicsbehavioral
6
Hiring Manager Interview
45 min5 focus topicsbehavioral
Additional Information
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