Cybersecurity Software Engineer

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 $8 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.

Who You’ll Work With

Our team's mission is to build the automations and tooling that power superhuman threat detection, incident response, and compliance reporting for both Arista's internal teams and our managed service customers. We are the engineering engine behind the security experts, creating the integrated, automated platform that allows them to move faster and see further

As a Cybersecurity Software Engineer, you will be a critical part of a small, agile team responsible for the full lifecycle of these tools. You'll help evolve and enhance our sophisticated suite of MSSP tools and automations for a 24x7x365 managed service,ensuring our platform remains best-in-class. This is a hands-on role where you'll have the autonomy to design, build, and deploy solutions that have a direct impact on our security posture.

What You'll Do 

● Develop and maintain full-stack applications, including Node.js/Express backends and React frontends.

● Build robust scripts, custom modules, and powerful automations using Python.

● Own features and projects from design to deployment, working closely with security analysts to gather requirements and feedback.

● Integrate a wide array of security tools with our SIEM, SOAR, and centralized logging solutions to create a seamless operational workflow.

● Use, maintain, and enhance our CI/CD pipelines (GitHub Actions, Jenkins) with an "infrastructure as code" mindset.

● Ensure the quality and reliability of our tools by writing comprehensive unit and integration tests.

● Create clear and concise documentation, including READMEs, development guides, and user manuals.

• 3-5+ years of professional full-stack software development experience
• Proficiency in Python, JavaScript/TypeScript, and modern frameworks (React, Node.js)
• Experience with cloud platforms (GCP, AWS), containerization (Docker, Kubernetes), and CI/CD tools (GitHub Actions, Jenkins)
• Expertise with databases including PostgreSQL, Elasticsearch, and Redis
• Strong communication skills, able to explain complex technical concepts to non-technical stakeholders

Bonus Points (Preferred Qualifications)

● Experience applying AI/ML to solve real-world problems, particularly with generative AI platforms (e.g., Google Gemini, AWS Bedrock) and concepts like RAG, vector databases, and embeddings frameworks.

● A strong background in cybersecurity, such as network/endpoint forensics, penetration testing (red team), or defensive engineering (purple team).

● Deep familiarity with security concepts like Indicators of Compromise (IOCs), CVEs, and the MITRE ATT&CK framework.

● Experience integrating with cybersecurity vendor and threat intelligence provider APIs.

● Experience building metrics dashboards to visualize performance and operational data.

#LI-SZ1

Arista stands out as an engineering-centric company. Our leadership, including founders and engineering managers, are all engineers who understand sound software engineering principles and the importance of doing things right.

We hire globally into our diverse team. At Arista, engineers have complete ownership of their projects. Our management structure is flat and streamlined, and software engineering is led by those who understand it best. We prioritize the development and utilization of test automation tools.

Our engineers have access to every part of the company, providing opportunities to work across various domains. Arista is headquartered in Santa Clara, California, with development offices in Australia, Canada, India, Ireland, and the US. We consider all our R&D centers equal in stature.

Join us to shape the future of networking and be part of a culture that values invention, quality, respect, and fun.