Software Engineer

Company Description

Arista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. Arista is a well-established and profitable company with over $9 billion in revenue. Arista’s award-winning platforms, ranging in Ethernet speeds up to 800G bits per second, redefine scalability, agility, and resilience.  Arista is a founding member of the Ultra Ethernet consortium. We have shipped over 20 million cloud networking ports worldwide with CloudVision and EOS, an advanced network operating system. Arista is committed to open standards, and its products are available worldwide directly and through partners.

At Arista, we value the diversity of thought and perspectives each employee brings. We believe fostering an inclusive environment where individuals from various backgrounds and experiences feel welcome is essential for driving creativity and innovation.

Our commitment to excellence has earned us several prestigious awards, such as the Great Place to Work Survey for Best Engineering Team and Best Company for Diversity, Compensation, and Work-Life Balance. At Arista, we take pride in our track record of success and strive to maintain the highest quality and performance standards in everything we do.

Job Description

Who You'll Work With 

AGNI (Arista Guardian for Network Identity) is Arista's cloud-native SaaS platform for network access control and zero-trust security. It is deployed by enterprises worldwide, both as a managed cloud service and on-premises. The platform handles authentication and authorization for every device that joins a network — using protocols like 802.1X, RADIUS, EAP-TLS, TACACS+, and PKI — and must work correctly under real network conditions, at scale, every time. 

The AGNI engineering team operates with a strong ownership culture: engineers define the feature, write the code, write the tests, and are accountable for what ships. The test automation team is a first-class engineering function — not a handoff at the end of development, but an integral part of how the team designs and validates the product. 

You will work alongside backend engineers, network protocol specialists, and CloudOps/SRE to build and maintain the automated test infrastructure that validates the entire AGNI platform. 

What You'll Do 

• Design and build end-to-end automated test suites for AGNI features — authentication protocol flows, REST API correctness, network policy enforcement, and device onboarding — primarily in Go. 
• Own test coverage for one or more product domains (e.g., RADIUS/EAP, TACACS+, captive portal, PKI) end to-end: derive test plans from feature specs, implement the cases, triage failures, and maintain them as the product evolves.