Software Engineering

Arista Networks; Ireland; On-site; PHP 4,914,004 - 7,371,007; Full time

Job summary

Arista Networks is seeking a Senior C++ Software Engineer to work remotely. You will be part of the OpenConfig team, building a programmable data center infrastructure using software-defined networking principles.

The ideal candidate will have strong engineering fundamentals, extensive background in algorithms, and fluency in C or C++. If you are interested in contributing to innovative networking solutions, this role offers opportunities to work on cutting-edge technology.

Qualifications

• Strong engineering and Computer Science fundamentals.
• Extensive background in algorithms and strong software architecture skills.
• 5+ fluency in one of C or C++ programming.
• Hands-on experience with designs and implementations in a strong product-engineering environment.

Responsibilities

• Build a dynamic, programmable data center infrastructure using software-defined networking principles.
• Architect an entirely new networking operating system.

Skills

Strong engineering fundamentals

Algorithms

C or C++ programming

Software architecture skills

Product engineering experience

Job description

Senior C++ Software Engineer - Remote - Greece, Spain, Hungary, Romania or Poland

• Contract

Arista Networks is an industry leader in data‑driven, client‑to‑cloud networking for large data center, campus and routing environments. Our solutions are designed to meet current demands and anticipate future challenges.

Who You'll Work With

The OpenConfig team responsible for building a dynamic, programmable data centre infrastructure using software‑defined networking principles such as declarative configuration and model‑driven management and operations.

What You'll Do

Arista’s engineering team started from a blank sheet of paper to architect an entirely new networking operating system. Arista’s unique architecture is based on three guiding principles:

1. State orientation
2. Open standards‑based approach
3. Single software image consistency

State Orientation for publish-subscribe communication

State Orientation uses a unique multi‑process state‑sharing architecture that separates state information from protocol processing and application logic with a central database shared by diverse applications. Both system state and data are stored in the system database where data is accessed via an automated publish/subscribe model. This design principle provides module independence, self‑healing resiliency, and multi‑process software stability. It is an elegant distributed systems solution applied holistically across the network. This contrasts with the decades‑old legacy approach of many competitors that uses extensive inter‑process communications (IPC), a shared memory bus, or a complex message‑passing framework to communicate across the system components.

Building EOS on Linux

Arista took to heart the lessons of the open‑source world and built EOS on top of an unmodified Linux kernel, maintaining full, secured access to the Linux shell and utilities. It is notable that it is the same Linux OS that Arista’s customers run in their data centers and on their servers. This foundational methodology enables EOS to preserve the security, feature development, and tools of the Linux community, unlike legacy approaches where the original OS kernel is either modified or based on older, less maintained versions. By adhering to open source Linux, EOS also natively supports Linux containers and virtual machines, simplifying the deployment of new services and enhancing DevOps practices.

Single Image

Arista’s third and crucial guiding principle is to provide a single software image that runs across all products in various packaging forms – physical platforms, virtual machines, and containers. The EOS single image uses the same source code and the same version of the software released across the entire portfolio of switches and routers, thus improving network testing and reliability while reducing the complexity and cost of network operations. In contrast, legacy vendors use multiple operating systems with numerous images. Managing these multiple software images with quality control testing or new features multiplies operational costs. When Arista releases a new software version, customers merely deploy a single image network‑wide. This approach improves automation workflows by allowing DevOps tools, such as Ansible or Terraform, to work across all Arista devices with a single integration. Using these integrations, operators can establish Continuous Integration pipelines that build, test, and deploy network configurations across the entire data center with increased speed and reliability.

• Strong engineering and Computer Science fundamentals.
• Extensive background in algorithms and strong software architecture skills.
• 5+ fluency in one of C or C++ programming.
• Hands‑on experience with designs and implementations in a strong product‑engineering environment.