I interviewed at Mastercard (Copenhagen, Capital Region)
Interview
1st interview was a talk with 2 team members about the role and my experience.
2nd interview was a technical code challenge, pair programming exercise.
Only 2 rounds in total I was told
I applied through a recruiter. I interviewed at Mastercard (Pune) in Feb 2026
Interview
Mastercard SSE Interview Experience,
I recently went through the interview process for a Senior Software Engineer (SSE) JAVA role at Mastercard. Overall, the experience was well-structured and focused on evaluating both technical depth and problem-solving abilities.
Feedback assumed from my interview experience and Finally translated to offer. Always analyse your interview experience, What went well and what not.
Round 1: Technical (Resume + Core Java)
Discussion around past projects and hands-on experience
Core Java concepts, including Java 8 and Java 21 features
Stream API coding and conceptual questions
Authentication concepts: SSO, SAML, OIDC, OAuth 2.0
Feedback: Strong positive
The discussion was smooth and mainly focused on real-world experience and fundamentals.
Round 2: Bar Raiser
Scenario-based design questions
Design patterns and practical use cases
SOLID principles
REST architecture fundamentals
Debugging and bug-handling approach
Feedback: Strong positive
This round tested problem-solving skills and clarity of concepts rather than memorization.
Round 3: Technical SME
REST principles and API design
12 Factor App methodology
SSO concepts, including SCIM
AWS Lambda basics
Spring Boot Security
Java 8 and Java 17 features
Differences between SAML, OIDC, and OAuth 2.0
Stream API usage
API Gateway concepts
Behavioral and pressure-based questions
Feedback: Neutral positive
Good focus on fundamentals. Feedback was to be more direct and concise in answers.
Round 4: Managerial
STAR-based behavioural questions
Project experience deep dive
Some technical discussion around API Gateway
Feedback: Positive
Round 5: HR
Salary negotiation and general HR discussion
Overall Experience
Interview process was comprehensive and concept-driven
Strong emphasis on fundamentals and real-world application
Communication clarity plays an important role
Final Verdict: Positive experience 👍
Interview questions [1]
Question 1
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
I applied online. I interviewed at Mastercard in Jan 2026
Interview
I applied online and just heard back from their team! I’m thrilled to have a foot in the door. Now, I need to prepare for the next steps and interviews.