Infosys Java Developer Interview Questions and Process 2026

Cracking the Infosys Java Developer Interview

Infosys executes massive digital transformation and legacy modernization projects globally, heavily relying on Java. For experienced (lateral) Java Developer roles, the interview process focuses on your ability to build scalable backend systems, migrate legacy code to Spring Boot, and understand microservices.

Phase 1: Technical Round 1 (Core Java & Data Structures)

The first round ensures your foundational knowledge is solid.

• Core Java Deep Dive: Expect rigorous questioning on the Collections Framework (internal working of HashMap, ConcurrentHashMap), multithreading (ExecutorService, thread lifecycle), and Exception Handling.
• Java 8+ Features: You must be fluent in Streams, Lambda expressions, and Optional. Questions like "Write a Stream pipeline to group a list of employees by their department" are standard.
• Data Structures & Algorithms: You will be asked medium-level DSA questions (arrays, strings, basic trees) to ensure you can write optimal code.

Phase 2: Technical Round 2 (Frameworks & Microservices)

This round evaluates your ability to build enterprise-grade applications.

• Spring Boot & REST: Questions will focus on creating RESTful APIs, Spring MVC flow, Dependency Injection (IoC container), and Spring Data JPA. "How do you handle global exceptions in a Spring Boot application?" (Answer: @ControllerAdvice).
• Microservices Architecture: For candidates with 3+ years of experience, microservices knowledge is mandatory. Be ready to discuss service discovery (Eureka), API Gateways, inter-service communication (REST vs. Kafka/RabbitMQ), and Circuit Breakers (Resilience4j).
• Database & Testing: Expect questions on SQL query optimization and ORM (Hibernate) caching strategies. You will also be asked about your unit testing approach (JUnit/Mockito).

Phase 3: Managerial & HR Round

Infosys evaluates your cultural fit, client handling abilities, and willingness to work within their operational models.

• Agile Methodology: "Explain your role in a typical sprint." They want to see that you understand Jira, daily stand-ups, and sprint retrospectives.
• Project Specifics: "Tell me about the most complex bug you fixed in your last project." They want to gauge your troubleshooting process in a production environment.
• Relocation/Onsite: They will check your flexibility regarding base location and potential onsite travel readiness.

Top 3 Technical Questions to Prepare

1. Explain the internal working mechanism of a ConcurrentHashMap in Java 8. How does it achieve thread safety without locking the entire map?
2. How do you manage distributed transactions in a Microservices architecture? Explain the Saga pattern or Two-Phase Commit.
3. Write a Java 8 Stream pipeline to find the second highest salary from a given list of Employee objects.