I applied through a recruiter. The process took 3 weeks. I interviewed at Arista Networks
Interview
A recruiter reached me about the opportunity and I wanted to give it a shot.
The first step was to complete a hacker rank test with only one question. It was easy however they expected %100 score to proceed to the next step.
The first interview was with an engineer about solving classic algorithm problems over a remote machine using a terminal text editor. Examples are in C and C++ however it is not expected to be great at the syntax. They care more about how you approach the problem and your algorithm.
The second interview was similar to the first one but with a hard problem. The only difference is that you're allowed to use whatever language you're comfortable with.
The third interview was with the manager but still a technical round and also about solving another problem.
All the interviewers in the process were helpful and kind. Everything went smoothly and professionally.
I really liked interviewing using tmux. To me, it reflects how much thought and effort they put into the hiring process.
Questions were medium/hard but not unsolvable in the given time so they're nicely selected.
Interview questions [1]
Question 1
Can you tell me a problem you've encountered and how you solved it?
I applied through a recruiter. I interviewed at Arista Networks in Jun 2026
Interview
Pros:
Great initial approach – the recruiter thoroughly checked my GitHub profile and projects before the interview, which is very uncommon and shows they do their homework.
Cons:
A major mismatch between the job description ("Software Engineer C++") and the actual interview reality. The technical stage on CoderPad strictly tests bare-metal C98 skills: raw pointers, manual bitwise operations, and packing bytes into 64-bit integers. If you are accustomed to modern C++ (RAII, templates, safe memory management), this will feel like a massive step backward. Additionally, the time expectations for live low-level bit-shifting were unrealistic, to the point where the interviewer started solving the task themselves.
Interview was kind and not stressful, just minor mismatch of naming
I applied through a recruiter. I interviewed at Arista Networks (Łódź, Lódz) in Jun 2026
Interview
Reached round 3 out of 4 planned, one was coding task, two live coding sessions. Linux development background was highly expected. Performance optimized approach was tested, specially oriented for hardware with lots of resources. I had a problem to properly understand reqruiting person during round 3, voice was not clear for me.
Interview questions [1]
Question 1
List implementation, bits counting, tre traversal.
Pretty good, not too complicated, was comfortable. Mostly LC questions, and was easy enough that you should be able to do it after doing NC150. good luck for the interview!