Mastercard SSE Interview – Questions Asked 🔹 Round 1 Questions based on your resume and past work experience Java-related questions Stream programming questions SSO-related questions Difference / concepts of: SAML OIDC OAuth 2.0 Java 8 features Java 21 features 🔹 Round 2 (Bar Raiser) Scenario-based questions Design pattern questions (with coding) SOLID principles REST architecture basics Questions on handling bugs / debugging approach 🔹 Round 3 (Technical SME) REST principles 12 Factor App How SSO works SCIM in SSO AWS Lambda Spring Boot Security Java 17 features Java 8 features Difference between: SAML OIDC OAuth 2.0 Stream API API Gateway Behavioral questions Pressure questions 🔹 Round 4 (Managerial) STAR-based behavioral questions Questions on API Gateway Project experience discussion 🔹 Round 5 (HR) Salary negotiation discussion