Education: Btech from NIT
Experience: 2 years (Indian service based MNC)

OA: codility, 2 question easy-level, based on numbers theory

Interview R1:
Q1: Print all pairs with given sum (hashing based solution)
Q2: Delete Kth node from end
Q3: Longest substring with all unique characters (sliding window)
Discussion on stack implementation using array and Linked list-> memoy optimisations using LL
Interviewer didn't asked for code if approach explanation was good

Interview R2:
Q1: Reverse words in a sentence in one pass
Q2: Delete node from a linked list, given only node address
C++ concepts like Static and Dynamic polymorphism, Access specifiers, how static polymorphism works (name mangling), delete vs free etc.

Later I was informed that second round is going to held again for .NET technologies

R2 (again):
Q1: Merge content of two lists (union)
JWT, Interfaces, Dependency Injections, try-catch-finally, some other .NET core concepts

Manager Round:
General dicussion about past experience, technologies, Areas of interest, why to switch job etc.

Director round
Discussion on projects, Interest, reason to switch job, what know about banglore etc.

On same day, I got called that I cleared all rounds.

Compensation : https://leetcode.com/discuss/post/3640622/opentext-swe-bangalore-by-anonymous_user-l9ll/