Remote Source

    BIOS Senior/Lead Software Engineer

    Canada
    Full-Time
    Senior (7+ yrs)
    Engineering & Development
    Leadership
    Posted on April 10, 2026

    Who You’ll Work With

    Arista’s BIOS team is responsible for developing and maintaining the CPU firmware, BIOS and Boot Loader software used in all Arista products..  This work includes bringing up new CPU boards, getting EOS to boot securely, efficiently and reliably.  This work also involves designing and implementing new features in EOS to manage and secure the low level system initialization and booting subsystems, as well as keeping pace with the latest developments in the open source and proprietary BIOS development communities.

    Arista BIOS software engineers are also responsible for low level software driving the CPU subsystems on all Arista products. You will evaluate new CPUs and work with CPU vendors and BIOS vendors to integrate their low level firmware into Arista products. You will work closely with hardware engineers to bring up, validate and test new CPUs in our hardware products.

    Arista Software Engineering roles demand a strong and broad software engineering background. While the primary focus area for this role is firmware, BIOS and booting software, your work will cover all aspects of software development spanning the design and development of new features, debugging problems and fine tuning code for reliability and performance. You will own your projects from definition to deployment and customer interactions, and you will be responsible for the quality of everything you deliver.

    What You’ll Do

    • Design, develop, integrate and maintain the low-level CPU software in Arista products.
    • Develop automated tests using C, C++ and Python to validate your features.
    • Work with hardware engineers and vendors to qualify new CPUs and related components for use in Arista products.
    • Track ongoing developments in the Linux Kernel and identify features and functionality of interest to Arista for our products and for internal development needs.
    • Work with upstream open source BIOS communities to contribute features back to the mainline.
    • Review and contribute to functional and design specifications written by other engineers.
    • Work with Customer Support Engineers and customers to analyze, mitigate and fix problems in customer networks.
    • Work with the System Test Engineers to analyze problems found in their tests and provide fixes for those problems.
    • Provide technical leadership across features, projects and tools.
    • Mentor new and junior engineers to bring them up to speed in Arista’s software development environment.
    Apply for this position

    Company:  Arista Networks

    Manufacturer of networking hardware and software for cloud data centers and enterprise environments.
    1001-5000 employees
    Hardware
    HQ: United States