SentinelOne Interview | Senior Software Engineer

Applied through career site and got call from recruiter within a week.

SentinelOne's interview is not DSA heavy but you can expect LC medium questions at max and lot of design questions

Round 1 (1 hr)

• Current project discussion, questions on the work I have done in C++ and C
• C++ Multi-threaded question to print numbers in sequence using multiple threads, wrote the code, test ran it and explained it.
• Cross question on the code written I was given edge cases to handle
• Advanced questions on C++-11 memory model
• C questions on memory allocation, how malloc, calloc and realloc work
• Code to create 2D matrix in C
• Discussion on C and C++ memory management

Round feedback was positive

Round 2 and 3 were conducted face to face in office.

Round 2 (1.5 hrs)

• Very similar to round 1
• But focus was more on OS concepts
• I was asked to explain my current product architecture
• How communication happens, how threads are managed in a pool
• I was asked to design multi-threaded queue both, lock and lock free, was asked to use CAS (Compare and swap)
• Asked process memory layout, got stuck and confused here between the layout in windows and linux process
• Was asked LC medium question at the end I dont remember the exact question, used max and min heap for it
• Lot of questions and discussions about OS concepts I dont remember the exact questions.

Round 3 (Manager Round)

• Typical manager round
• Was asked about project
• Difficult tasks handled

Overall the interview experience was good and interviewers were very friendly Got positive feedback for all the rounds and was given the offer within 3 days