Required Skills & Tech Stack
Java
Kafka
Angular
Full Stack
Development
Stack
📚 Free Study Materials (4)
📖
Aptitude Practice Questions & Mock Tests
Open Resource ↗
Curated logical, quantitative, and verbal reasoning problems for the initial online screening round.
🎯
Company-Specific Interview Preparation Corner
Open Resource ↗
Detailed interview experiences, exam formats, and previous test questions for Infosys and tech roles.
📝
Technical Placement Cheat Sheets & Question Bank
Open Resource ↗
High-yield coding cheat sheets, core CS fundamentals (OOP, DBMS, OS, Networks), and rapid revision guides.
💻
Algorithm, DSA & Live Code Debugger Practice
Open Resource ↗
Hands-on problem sets to improve coding speed and step-by-step memory debugging.
Eligibility Criteria
Experience: 2-5 Yrs. Open to matching qualifications.
Selection & Interview Process
1
Online Assessment / Technical Interview Rounds / HR Review
Job Description & Key Responsibilities
Job Description Java Developer with Kafka & Angular/React Experience (25 Years) Position: Software Engineer / Java Full Stack Developer Experience: 2-5 Years Notice Period: Immediate Joinner Job Summary We are looking for a skilled Java Developer with hands-on experience in Apache Kafka and modern front-end technologies ( Angular or React ). The ideal candidate will be responsible for developing scalable microservices, event-driven applications, and responsive web applications while collaborating with cross-functional teams. Key Responsibilities Design, develop, and maintain backend applications using Java, Spring Boot, and Microservices . Build and consume real-time data pipelines using Apache Kafka . Develop responsive user interfaces using Angular or React . Design and develop RESTful APIs and integrate with frontend applications. Participate in application architecture, code reviews, and performance optimization. Troubleshoot production issues and ensure application stability and scalability. Work closely with Product Owners, QA teams, and DevOps teams throughout the SDLC. Follow Agile/Scrum methodologies and best coding practices. Required Skills 25 years of experience in Java development . Strong knowledge of Java 8/11/17 , Spring Boot, and Microservices Architecture. Hands-on experience with Apache Kafka (Producers, Consumers, Topics, Partitions, Consumer Groups). Experience in Angular (2+) or React.js development. Strong understanding of REST APIs and JSON. Experience with relational databases such as MySQL, PostgreSQL, or Oracle . Knowledge of Git , Maven/Gradle, and CI/CD processes. Understanding of object-oriented design principles and design patterns. Preferred Skills Experience with Docker and Kubernetes. Knowledge of cloud platforms such as AWS, Azure, or GCP. Familiarity with Redis, MongoDB, or Elasticsearch. Experience with monitoring and logging tools. Education Bachelor's or Master's degree in Computer Science, Information Technology, or a related field. Nice to Have Experience in event-driven architecture. Exposure to DevOps practices and automated deployments. Knowledge of unit testing frameworks such as JUnit and Mockito. Keywords: Java, Spring Boot, Kafka, Microservices, Angular, React, REST API, SQL, Docker, Kubernetes, Agile.
Preparation Hub
Infosys — Software Engineering & Full Stack Interview Guide
Previously asked questions, exam syllabus, coding benchmarks & round strategy.
📖 Previously Asked Questions & Preparation Links
APTITUDE & LOGIC
📖
Aptitude Practice Questions & Online Mock Tests
Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test.
Open Resource ↗
COMPANY GUIDE
🎯
Infosys Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for Infosys and off-campus tech roles.
Open Resource ↗
MOCK TESTS & PAPERS
📝
Comprehensive Interview Prep Resources & Syllabus
Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.
Open Resource ↗
CODING PRACTICE
💻
Algorithm and Data Structure Problem Set
Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.
Open Resource ↗
💻 Previously Asked Coding Challenges
Easy / Medium
⚡ Live Debugger
Two Sum & Two Pointers Array Optimization
Asked in 85% tech rounds
Medium
⚡ Live Debugger
Reverse Linked List & Detect Cycle (Floyd's Algorithm)
Frequently asked in core rounds
Medium
⚡ Live Debugger
SQL Nth Highest Salary with DENSE_RANK() & Subqueries
Top standard database question
Easy / Medium
⚡ Live Debugger
Valid Parentheses & Stack Implementation
Standard online assessment problem
🗺️ Round-Wise Strategy
Round 1: Online Assessment (OA)
Aptitude, Quantitative Logic & 2 Coding Problems
Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1
Core Tech Stack (Java, Kafka, Angular, Full Stack, Development, Stack) & Live Code Tracing
Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving
Database Schemas, APIs & Architecture Basics
Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion
Infosys Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
❓ Core Technical Questions & Answers
Explain OOP (Object-Oriented Programming) principles with real-world examples in Java. Answer ▼
Model Answer: 1. Encapsulation (data hiding via private fields/getters). 2. Abstraction (hiding implementation complexity). 3. Inheritance (code reusability). 4. Polymorphism (method overriding/overloading).
What is the time and space complexity of QuickSort vs MergeSort? Answer ▼
Model Answer: QuickSort: Average O(N log N) time, O(log N) space. Worst O(N^2). MergeSort: Guaranteed O(N log N) time, but requires O(N) auxiliary space.
Explain the difference between SQL Indexing (B-Tree vs Hash) and when not to use an index. Answer ▼
Model Answer: Indexes speed up SELECT queries via B-Trees. However, they slow down INSERT, UPDATE, and DELETE operations because indexes must be updated on disk. Avoid on low-cardinality columns (e.g., boolean flags).
What happens under the hood when you enter a URL in a browser? Answer ▼
Model Answer: 1. DNS lookup (resolves IP). 2. TCP 3-way handshake (SYN, SYN-ACK, ACK). 3. TLS negotiation for HTTPS. 4. HTTP GET request sent. 5. Server responds with HTML/CSS/JS. 6. Browser renders DOM & CSSOM tree.
What is the difference between REST and GraphQL APIs? Answer ▼
Model Answer: REST uses multiple fixed endpoints with possible over/under-fetching. GraphQL uses a single endpoint allowing clients to query exact fields in a single request.
🤝 Behavioral & HR Questions (STAR Method)
Why do you want to join Infosys as a Java Full Stack Developer?
Preparation Tip: Highlight Infosys's market reputation, recent tech innovations, and how your skills in Java directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Preparation Tip: Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Preparation Tip: Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
