DXC Technology

DXC Technology

American multinational B2B IT services provider.

4 Rounds ~21 Days Medium
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The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

Backend Engineer • Behavioral • medium

At DXC, we frequently modernize legacy monolithic applications for enterprise clients. Tell me about a time you had to refactor or migrate a legacy system. What was your approach?

#Legacy Modernization #Problem Solving
Practice
Backend Engineer • Behavioral • medium

Describe a situation where you strongly disagreed with a senior engineer or architect on a technical decision. How did you handle it?

#Conflict Resolution #Communication
Practice
Backend Engineer • Behavioral • easy

How do you ensure code quality and maintainability when working under strict deadlines in a fast-paced Agile sprint?

#Agile #Code Quality
Practice
Backend Engineer • Behavioral • medium

Tell me about a time you had to troubleshoot a critical production issue under severe pressure. Walk me through your debugging process.

#Incident Management #Pressure
Practice
Backend Engineer • Behavioral • medium

DXC engineers often work directly with non-technical enterprise clients. Describe your experience gathering technical requirements from business stakeholders.

#Client Interaction #Requirements Gathering
Practice
Backend Engineer • Behavioral • medium

How do you balance the need to deliver new features quickly for a client versus the need to address accumulating technical debt?

#Prioritization #Tech Debt
Practice
Backend Engineer • Behavioral • easy

Tell me about a time you took the initiative to learn a new technology or tool because it was necessary for a project, even though it wasn't your core expertise.

#Continuous Learning #Adaptability
Practice
Backend Engineer • Coding • easy

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. Assume exactly one solution exists.

#Arrays #Hash Table
Practice
Backend Engineer • Coding • medium

Given a string s, find the length of the longest substring without repeating characters.

#Strings #Sliding Window #Hash Set
Practice
Backend Engineer • Coding • medium

Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input.

#Arrays #Sorting
Practice
Backend Engineer • Coding • easy

Reverse a singly linked list. Provide both iterative and recursive solutions.

#Linked List #Recursion
Practice
Backend Engineer • Coding • medium

Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.

#Heap #Quickselect #Arrays
Practice
Backend Engineer • Coding • medium

Design and implement a data structure for Least Recently Used (LRU) cache. It should support get and put operations in O(1) time complexity.

#Design #Hash Table #Doubly Linked List
Practice
Backend Engineer • Coding • easy

Given a string s, find the first non-repeating character in it and return its index. If it does not exist, return -1.

#Strings #Hash Table
Practice
Backend Engineer • Coding • medium

Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level).

#Trees #Breadth-First Search (BFS) #Queue
Practice
Backend Engineer • System Design • medium

Design a URL Shortening service like Bitly. Focus on the database schema and the URL generation algorithm.

#Scalability #Database Design #Algorithms
Practice
Backend Engineer • System Design • hard

How would you design a microservices architecture for an e-commerce checkout system? How do you handle inventory reservation?

#Microservices #E-commerce #Event-Driven
Practice
Backend Engineer • System Design • hard

Explain the Saga design pattern. How would you implement distributed transactions across multiple microservices?

#Microservices #Distributed Transactions
Practice
Backend Engineer • System Design • medium

How do you implement rate limiting for a public-facing API to prevent abuse?

#API Gateway #Security #Algorithms
Practice
Backend Engineer • System Design • medium

Design a centralized logging and monitoring strategy for a distributed microservices application deployed on Kubernetes.

#Observability #DevOps #Microservices
Practice
Backend Engineer • System Design • medium

How do you handle service discovery and client-side load balancing in a Spring Boot microservices ecosystem?

#Microservices #Networking #Spring Cloud
Practice
Backend Engineer • System Design • hard

Design an event-driven notification system using Apache Kafka. How do you ensure messages are not lost and are processed exactly once?

#Event-Driven #Kafka #Asynchronous
Practice
Backend Engineer • Technical • medium

Explain the internal working of a ConcurrentHashMap in Java 8+. How does it differ from a synchronized HashMap?

#Concurrency #Data Structures #Internals
Practice
Backend Engineer • Technical • easy

What is the difference between @Controller and @RestController in Spring Boot?

#Spring MVC #REST APIs
Practice
Backend Engineer • Technical • hard

How does Spring Boot Auto-configuration work under the hood? Explain the role of @EnableAutoConfiguration.

#Architecture #Internals #Annotations
Practice
Backend Engineer • Technical • medium

Explain the different propagation behaviors available in Spring's @Transactional annotation. When would you use REQUIRES_NEW?

#Transactions #Database
Practice
Backend Engineer • Technical • medium

What is the N+1 select problem in Hibernate/JPA? How do you resolve it?

#ORM #Performance #SQL
Practice
Backend Engineer • Technical • easy

Write a SQL query to find the second highest salary from an Employee table.

#Queries #Database
Practice
Backend Engineer • Technical • medium

What is the difference between a clustered and a non-clustered index in a relational database?

#Database Architecture #Performance Tuning
Practice
Backend Engineer • Technical • medium

How do you handle exceptions globally in a Spring Boot REST API?

#Exception Handling #REST APIs
Practice
Backend Engineer • Technical • medium

What is the difference between CompletableFuture and the standard Future interface in Java?

#Concurrency #Asynchronous Programming
Practice
Backend Engineer • Technical • hard

How does Garbage Collection work in Java? Can you explain the difference between the G1 Garbage Collector and the CMS Collector?

#JVM #Memory Management
Practice
Backend Engineer • Technical • easy

Explain the concept of Dependency Injection (DI) and Inversion of Control (IoC). What are the benefits in an enterprise application?

#Design Patterns #Spring Core
Practice
Backend Engineer • Technical • medium

How do you secure a REST API? Explain how JWT (JSON Web Tokens) work in a stateless authentication mechanism.

#Authentication #JWT #Spring Security
Practice
Backend Engineer • Technical • medium

Explain the CAP theorem. How does it apply to a NoSQL database like Cassandra versus a relational database like PostgreSQL?

#Architecture #Database
Practice

Difficulty Radar

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Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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Unwritten Rules

Think Out Loud

Always explain your thought process before writing code or drawing architecture.

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