Infoedge

Role: Backend Developer

College: Not Specified

Interview Date: January 15, 2025

Interview Type: Off-Campus (Onsite Hiring Drive)

Result: Not Offered (All rounds marked positive, but no offer received; HR mentioned follow-up for future roles)

Difficulty: Medium-Hard

Rounds: 3 rounds

Topics Asked: Data Structures, Algorithms, System Design, Multithreading, Managerial, Behavioral

Experience:

The candidate received a Google Form link from a recruiter after uploading their resume on Naukri and was shortlisted for an onsite hiring drive. This was the candidate's first onsite interview and first exposure to a system design round. The overall environment was supportive, and interviewers provided actionable feedback.

Round 1: DSA Round (45 minutes, Onsite)

• Questions asked:
  1. Three Sum Problem: Started with brute force, then optimized using sorting and two-pointer techniques.
  2. LCA (Lowest Common Ancestor) of Deepest Leaves: Explained a BFS + DFS approach and optimized it to a single DFS with a hint from the interviewer.
• All coding was done on paper.
• Feedback: Strong problem-solving and optimization skills, good communication of approach, needs improvement in Java syntax (candidate usually codes in JavaScript).

Round 2: System Design Round (January 15, 2025)

• The interviewer offered a choice between explaining the architecture of the candidate's current project or designing a URL shortener. The candidate chose the URL shortener.
• Discussion topics included: Requirement breakdown, API design, Database selection, Hashing & collision handling, Code structure (POJO, Controller, Service, Repository), Singleton pattern, Thread safety and synchronization.
• Feedback: Clear understanding of code-level design, strong multithreading fundamentals, needs to improve clarity in high-level architectural design.

Round 3: DSA + Managerial Round (Final, January 15, 2025)

• DSA Question: Evaluate Expression (stack-based). The candidate explained the approach, walked through test cases, and discussed edge scenarios.
• Managerial Topics: Motivation for joining InfoEdge, career goals and learning mindset, developer approach towards evolving technology.
• Feedback: All rounds were marked positive, strong DSA and multithreading skills, needs more depth in system design understanding.

Outcome: Despite positive feedback across all rounds, no offer was received. HR mentioned that they would follow up when new roles open up.