Microsoft SDET (Staff Level) Interview Preparation Guide
Software Development Engineer in Test (SDET)
Microsoft
Staff
7 rounds
Updated 2/22/2026
Microsoft's SDET Staff-level interview process typically includes an initial recruiter screening, technical phone interviews, and 5-7 onsite rounds covering advanced test automation framework design, testing infrastructure system design, complex coding challenges, behavioral assessment at leadership level, and technical leadership evaluation. The process evaluates expertise in building scalable testing solutions, architectural thinking for testing platforms, hands-on coding skills with modern frameworks, and cross-functional influence.
Interview Rounds
1
Recruiter Screening
30 min3 focus topicsculture fit
2
Technical Phone Screen - SDET Frameworks and Foundations
60 min4 focus topicstechnical
3
Onsite Round 1: Test Automation Framework Deep Dive
90 min4 focus topicstechnical
4
Onsite Round 2: System Design - Testing Infrastructure Platform
90 min4 focus topicssystem design
5
Onsite Round 3: Advanced Automation Coding Challenge
60 min4 focus topicstechnical
6
Onsite Round 4: Behavioral and Leadership Assessment
90 min5 focus topicsbehavioral
7
Onsite Round 5: Technical Strategy and Vision
75 min5 focus topicstechnical