Infosys Specialist Programmer (SP) Interview Experience

Position: Specialist Programmer (SP) Location: India Difficulty: Medium–Hard

Online Coding Assessment

The first round was an online coding assessment consisting of 3 coding questions, ranging from easy to hard.

The questions focused on problem-solving, data structures, algorithms, and coding fundamentals. The difficulty increased progressively across the three questions.

Offline Coding Assessment

The second round was an offline coding assessment consisting of 4 coding questions, ranging from easy to complex.

The questions covered important DSA topics such as:

• Dynamic Programming (DP)

• Graphs

• Trees

• Arrays

• Data Structures and Algorithms

• Problem-solving and optimization

The difficulty increased progressively throughout the assessment.

Final Technical Interview — L2

After completing the coding rounds, I attended the L2 technical interview, which was the final interview round.

The interviewer first asked me to solve a coding problem:

Count the number of subarrays whose product is greater than or equal to a given value K.

This was a medium-level problem, and I was specifically asked to provide an O(n) solution.

After solving it, I was given another coding problem:

LeetCode — Minimum Window Substring (Hard) https://leetcode.com/problems/minimum-window-substring/description/

For this problem also, I was asked to provide an O(n) solution. I explained the approach, traced the solution step by step, and demonstrated the output.

I was able to solve both coding problems with O(n) time complexity.

After the coding discussion, I was asked to give my self-introduction.

During my introduction, the interviewer asked me to explain one of my projects. I explained the project and its implementation.

The technical discussion then covered several concepts:

• Logistic Regression

• CNN

• RNN

• Algorithms

• Cache Memory

• A* (A-Star) Algorithm

• DFS and BFS

• Normalization

• JVM

Most of the questions were based on the technical skills and keywords mentioned in my resume.

The interview lasted approximately 1 hour and 10 minutes and concluded with the interviewer asking if I had any questions.

Overall Experience

The Infosys Specialist Programmer selection process consisted of three major stages:

1. Online Coding Assessment — 3 coding questions, ranging from easy to hard.

2. Offline Coding Assessment — 4 coding questions, ranging from easy to complex, covering topics such as DP, graphs, trees, and other DSA concepts.

3. L2 Technical Interview — Coding, project discussion, AI/ML concepts, and computer science fundamentals.