Infosys HackwithInfy Interview Experience for Speacialist Programmer 2022

Infosys organizes a coding competition named “HackWithInfy” in which engineering students across India. They also provide PPI ( pre-placement interview) for the roles of SP, DSE, or SE (based on their performance) to top performers. (for more information about HackWithInfy you can refer to the following link https://www.infosys.com/careers/hackwithinfy.html).

I participated in HackWithInfty 2022.

Round-1(Session- 7th Feb 2022) Initially, Infosys organized a webinar to give insights about the program. Their senior developers guided them about the program and also mentioned resources to prepare.

Round-2 (Online Round -6th March 2022) It was a web-proctored coding round. There were 3 questions and 3 hours to solve.

• The first question was based on strongly connected components in a graph which had to be solved using Tarjan’s algorithm.
• The second question was based on the Minimum spanning tree.
• The third was a typical leetcode hard problem based on Dynamic programming.

Due to the time constraints, I was able to solve only 2 questions completely out of 3. For the SP role, you have to solve at least 2 questions and for the DSE role, more than 1 question.

Finally, after 1 month of waiting, I received a mail on the 18th of April that I have been offered a PPI opportunity for the role of SP and the details of the interview shall be given soon.

I got mail for the interview on 28th April that my interview is scheduled on 30th April 2022.

Round-3 (Interview-30th April 2022) My interview was organized on Microsoft Teams. I joined using the link provided in the invitation mail. The person who took my interview had 7 years of experience. Firstly he introduced himself and then asked me.

After that, we had a detailed discussion on one of my major projects. Why I used that particular technology and my motivation behind making that project.This went for around 15 min. Coming on to the internship he asked various situation-based questions on the same such as Tell me about a time when you had miserably failed the team.

After that, he jumped on to the coding questions.

• The first question was a typical sliding window question to find the maximum element in every window of size k. Initially, I gave him the brute force approach along with its time complexity. Then he asked me to optimize it. Then I did it using deque.
• The second question was to find a path from one node to another node in a BST. This was a typical implementation of LCA.I coded this and explained to him the space and time complexity for this.

After this, he asked me about core subjects in extreme depth along with the design patterns.

• They emphasized a lot on oops. Asked about the virtual table, virtual pointer, function overriding, and runtime polymorphism. They were looking for real-life examples.
• Also, they asked me to implement the code with the oops concepts ie using objects and classes.
• Coming on to the Operating system, they asked me about the deadlock conditions and Round robin scheduling algorithms along with the concepts of paging and disk scheduling.

In the end, he asked me for one of the puzzles https://www.geeksforgeeks.org/puzzle-18-torch-and-bridge/.

Finally, the interview ended with me asking questions to him about the projects, his tech stack, and growth opportunities in Infosys. After a long wait on 29th July, I received a positive response from Infosys for the role of SP.

Verdict: Selected

Tips

• Be very clear with CS fundamentals, especially OOPS and OS
• Be confident they’ll cross-question you a lot
• Try to communicate as much as possible
• At the end ask questions that depict you are interested in the company.
• Practice DSA a lot because the online round is a challenge
• Be ready for everything because LUCK also plays a role.
• Patience is the key because it took me around 6 months for the entire process
• Consistency is the key to Success.  

All the best!