Required Skills & Tech Stack
C#
ASP.NET Core
ADO.NET
.NET Core
ASP.NET MVC
ASP.NET
Net MVC
ASP.NET Core MVC
📚 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: 3-5 Yrs. Open to matching qualifications.
Selection & Interview Process
1
Online Assessment / Technical Interview Rounds / HR Review
Job Description & Key Responsibilities
Job Title: .NET Developer Exp Range: 5 to 8 years Employment Type: Full-Time Job Summary We are looking for a skilled .NET Developer with experience in designing, developing, and maintaining scalable enterprise applications using Microsoft technologies. The ideal candidate should have strong expertise in .NET Framework/.NET Core, C#, SQL Server, and web application development. Key Responsibilities Design, develop, test, and deploy applications using .NET technologies. Develop and maintain web applications, RESTful APIs, and microservices. Collaborate with business analysts, architects, and cross-functional teams to understand requirements and deliver solutions. Write clean, scalable, and maintainable code following best practices. Optimize application performance and troubleshoot production issues. Develop database objects such as stored procedures, functions, and triggers. Participate in code reviews, unit testing, and CI/CD implementations. Work in Agile/Scrum development environments. Required Skills Strong experience in C#, ASP.NET, .NET Core/.NET Experience with ASP.NET MVC, Web API, Entity Framework . Strong knowledge of SQL Server , database design, and query optimization. Experience in developing and consuming RESTful APIs . Understanding of OOP, Design Patterns, SOLID Principles . Experience with JavaScript, HTML5, CSS3, jQuery . Knowledge of Version Control Systems such as Git and Azure DevOps. Familiarity with Unit Testing Frameworks (xUnit, NUnit, MSTest). Preferred Skills Experience with Microservices Architecture . Exposure to Azure Cloud Services (App Services, Functions, Storage, Service Bus). Experience with Docker, Kubernetes , and containerization. Knowledge of CI/CD pipelines using Azure DevOps or GitHub Actions. Hands-on experience with React.js or Angular. Educational Qualification Bachelor's degree in Computer Science, Information Technology, Engineering, or related field. Nice to Have Experience working in Banking, Healthcare, Retail, or Enterprise domains. Strong analytical and problem-solving skills. Good communication and stakeholder management skills. Certification in Microsoft Azure or .NET technologies. Keywords C#, ASP.NET, .NET Core, .NET 6/7/8, MVC, Web API, Entity Framework, SQL Server, Azure, Microservices, Docker, Kubernetes, Azure DevOps, Git, REST API, LINQ, OOP, SOLID Principles.
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 (C#, ASP.NET Core, ADO.NET, .NET Core, ASP.NET MVC, ASP.NET, Net MVC, ASP.NET Core MVC) & 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 C#. 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 .NET Software Developer?
Preparation Tip: Highlight Infosys's market reputation, recent tech innovations, and how your skills in C# 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.
