I applied online. The process took 5 weeks. I interviewed at Arista Networks (Santa Clara, CA) in Oct 2018
Interview
Really positive experience through the whole process, which took 5 weeks from first interview to offer. First interview was a technical phone interview where I remoted in via SSH to work with some files. There were a few C questions, but I don't have much experience with C so the interviewer let me do the algorithm stuff in Python.
Second was a 2-hour onsite where I worked through a whiteboarding problem with an engineering manager for about an hour, then the CTO came and I worked through a couple more questions with him. Both interviews felt more like an interesting 2-way conversation than me being awkwardly put on the spot and being judged, which I really appreciated. I'm a new grad and both of them knew orders of magnitude more than me, but still didn't talk down to me at all. Even left with a list of 3-4 cool data structures/algorithms to look up when I got home.
Interview questions [3]
Question 1
Basic questions about C pointers as they relate to Strings.
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!
Arista Networks interviews FAQs
Software Engineer applicants have rated the interview process at Arista Networks with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 56% positive. To compare, the company-average is 60.3% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Engineer roles take an average of 13 days to get hired, when considering 224 user submitted interviews for this role. To compare, the hiring process at Arista Networks overall takes an average of 14 days.
Common stages of the interview process at Arista Networks as a Software Engineer according to 224 Glassdoor interviews include:
One on one interview: 31%
Phone interview: 28%
Skills test: 19%
Presentation: 6%
Group panel interview: 6%
Background check: 3%
IQ intelligence test: 2%
Other: 2%
Drug test: 2%
Personality test: 1%
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