SLB Software Engineer interview questions

I had an onsite interview which is sponsored by them. I had an 4 rounds of interview round 1: Powerpoint presentation of any of your projects/ recent experience round 2&3: Technical and DSA round 4: Leetcode

The interview had 3 rounds 2 technical 1 HR The 1st technical was of the Resume based questions completely based on the project The 2nd technical was for Logical puzzle and DSA Round , then hast was of the HR round Overall the DSA question asked was of the all possible palindrome substring