Celigo

Role: Software Development Engineer (SDE-1)

College: Not Specified (On-Campus)

Interview Date: Not Specified

Interview Type: On-Campus

Result: Selected (Implied)

Difficulty: Medium

Rounds: 4 rounds

Topics Asked: CS Fundamentals, Programming, Data Structures and Algorithms (DSA), First missing positive integer from unsorted array, Intersection point of two linked lists, Project discussion, System Design (project architecture manipulation), Weighted job scheduling (advanced version), House Robber problem (and its second variation), Time and Space Complexity, HR questions (higher studies, relocation).

Experience:

Celigo visited the campus for an SDE-1 profile, and there were 4 rounds in total.

Round 1: Online Screening Round
This round consisted of a mix of MCQs and coding questions. The MCQs covered various aspects like CS fundamentals and programming. Around 160+ students appeared, and about 30 were shortlisted.

Round 2: Technical Interview (DSA)
This round focused on DSA skills. Two DSA questions were asked: "First missing positive integer from an unsorted array" and "Find an intersection point of two linked lists". The candidate was asked to discuss all approaches, including time and space complexity, and code the most optimized approach within an hour. The interviewer was helpful and guided the candidate.

Round 3: Technical Interview (Projects & DSA)
This round started with an introduction, followed by a 15-minute discussion on projects in depth. The interviewer also included system design aspects, asking to explain the approach to certain manipulations in the project's architecture. Two coding questions were then asked: an advanced version of "weighted job scheduling" and "House Robber" along with its second variation. The candidate was expected to discuss all approaches and code the most optimized one, including time and space complexity.

Round 4: HR Round
This round lasted about 30 minutes. HR asked questions about the candidate's inclination toward higher studies and relocation.