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%
Drug test: 2%
Other: 2%
Personality test: 1%
Here are the most commonly searched roles for interview reports -
I applied through a recruiter. The process took 6 weeks. I interviewed at Arista Networks (Burnaby, BC) in Jan 2015
Interview
The process started with an on-site interview where I was asked some knowledge questions about C++ and objects (such as const situations, virtual method table behaviour, polymorphism, and referencing non-virtual methods). This initial interview also included a simple coding exercise in the style of an ACM programming contest question.
The second interview had two parts, each with a different interviewer. The first part involved designing a stack. The second part was a discussion about data in EXEs and memory, including code, constants, variables, and parameters. We also talked about endianness and how variable-argument routine (e.g. printf) calls are structured on the stack.
Interview questions [1]
Question 1
I was asked to design a C++ stack that could handle arbitrarily-sized data for multiple different clients. This turned out to be simpler that it initially seemed, as the data size was fixed in advance for each client and thread-safety was not a concern.
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!