Arista's interview process for a Technical Solutions Engineer typically includes multiple rounds, focusing on networking fundamentals, troubleshooting, problem-solving skills, technical expertise, and behavioral questions to assess both technical and cultural fit.

Interview will be to check deep knowledge on the networking topics. Not basic at all. 1st round will be Technical taken by manager and team lead. final round will be with manager and director on behavioral. After the interview they took 2 month to send mail of rejection. If they rejecting a applicant its better to do within 2 weeks and not to go for final round.

I had applied several times in the past without a referral, but often the result was either rejection, ghosting, or lack of interest from the Hiring Manager. This time, I applied with a referral, and things have progressed differently. I had my first interview with the Hiring Manager, which was more of a company/role fit discussion. We talked about my background, "Tell me about yourself," and some basic networking concepts (OSI layers, devices, etc.). It was scheduled for an hour but lasted about 30 minutes. Later the same day, I received an invitation for the second round, which was technical. This focused on my resume and the keywords listed, with questions about networking basics. This round lasted around an hour. The same day, I was invited to the third round—a troubleshooting exercise. I was given a network topology with multiple issues (subnetting, routing protocols, DHCP, DNS) and had to guide an engineer on how to troubleshoot them. It was scheduled for two hours but finished in about an hour, followed by a discussion about the role and the networking industry in general.