
Netcracker Technology Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 451 interview experiences · FREE TO READ
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30 roles · 451 reportsCandidate interview experiences
First-hand accounts from people who interviewed at Netcracker Technology.
Software Engineer
The process was supposed to be good, but it was a mess. 5 rounds for an entry-level role, which took a whole month, plus 2 HR rounds, 2 technical rounds, and 1 managerial round. The entire thing dragged on for 4 months, felt like I was ghosted. They used whiteboard coding and practical exercises like LeetCode problems. The interviews themselves were okay, and the interviewers were professional. They wanted a background check before any offer, which is a red flag. I got the 'greenlight,' only to get a generic rejection email on Friday afternoon, 10 minutes before closing time, leaving me with a terrible weekend after 5 rounds and 4 months.
- Can you explain the performance differences between String, StringBuilder, and StringBuffer?
PLSQL Developer
It was a 3-round interview, with 2 technical rounds and 1 managerial round. Each round was about an hour or more. The first technical round started with basic PL/SQL concepts and moved to advanced topics like indexes, tuning, procedures, exception handling, cursors, and hierarchical queries, focusing more on conceptual understanding than exact syntax. The second technical round, held 5 days later, was similar to the first and covered questions I missed previously. It also included some basic SQL queries and a task to write a procedure based on a given scenario. The managerial round involved discussions about my projects, followed by a mix of situational and technical questions, and finally, salary expectations.
- How would you remove duplicate records using an SQL query?
- Can you explain how to write an SQL query that splits a given sentence into multiple rows, using spaces as the delimiter?
- Describe the usage of a cursor and how you would implement it.
Market Strategy Director
I remembered I had interviewed with this company a few months back for a Director, Market Strategy role, which is still posted on their careers site. I reapplied through their corporate website and was contacted by a talent acquisition specialist for a Zoom screen interview. The conversation was good, and the interviewer said they would get back to me after speaking with the hiring manager. Within a few days, I received feedback that I was not selected to proceed, which I respect. It's worth noting the job is still active, which contradicts the interviewer's statement that they were looking to fill it soon (which was months ago). This suggests indecisiveness or a paused requisition. I'm sharing this in case others interview for this role and wonder why it hasn't been staffed yet.
- Can you confirm your eligibility to work in the US?
Software Engineer Development
So, there were 3 tech rounds and then 1 HM round. The third tech round was actually taken by the HM SP. That's when I first noticed his bad attitude and got a sense of their work culture from the questions he asked. I cleared that round, and then for the fourth HM round, SP was the interviewer again. I forgot the name of some tool, and he just started yelling and acting unprofessionally. I stayed calm, even though I already had an offer from a better place. It's crazy that even someone junior like me knows how to talk to people, but someone so experienced and senior doesn't know how to behave. Anyway, I didn't get through the HM round. I told the recruiter about the HM's attitude and that I'd leave a review on Glassdoor. The recruiter acted like it was no big deal. Later, I found out from a friend that this company's culture is really bad. I wouldn't recommend this company to anyone, especially if SP is the HM.
- Could you explain Java Object-Oriented Programming concepts?
- Can you discuss your understanding of Data Structures and Algorithms?
- Tell me about Java threading and concurrency.
Netcracker Technology Interview Questions
Quoted word for word from Netcracker Technology interview reports.
“Write a Python function to print the pattern 'aaabbbbcccc' given the input 'a3b4c4'.”
Read reports →“Write a code to calculate the sum of all digits of a number.”
Read reports →“Regarding the number of nodes N, how many binary trees can be constructed?”
Read reports →“What is the difference between a synchronized HashMap and a concurrent HashMap?”
Read reports →“Is it possible for a foreign key in Oracle to be null?”
Read report →“Can we get the second string from the first string by permutation?”
Read report →“Given the input table C1 | c2 with pairs like (1, India), (2, Aus), (3, Pak), (4, SL), provide the output showing pairs of countries like India | Aus, India | Pak, India | SL, Aus | Pak, Aus | SL, Pak | SL.”
Read report →“Can you write Python code to parse HTTP error codes in Nginx logs?”
Read report →“Can you find the nth largest or smallest number in an array?”
Read report →Formats, difficulty and experience
Across all 451 Netcracker Technology interview reports.