Software Development Engineer in Test (Network Security)

Design, develop, and maintain test plans, automated test suites, and system testbeds for Sophos Network Security product features. In this role, you will strengthen existing test coverage, partner closely with the feature team, and build automated test scripts that enable faster feedback, improved quality, and quicker product delivery.

The ideal candidate brings strong hands-on testing expertise, growing automation capability, and the ability to think beyond execution by identifying risks early, preventing defects, and continuously improving product quality.

• Own end‑to‑end quality for assigned features, components, or services
• Design and execute functional, integration, system, and regression testing
• Perform exploratory testing to uncover edge cases and failure scenarios
• Identify, document, and track defects with clear reproduction steps and impact analysis
• Prioritize effectively, stay focused, and drive tasks through to completion
• Design, develop, and maintain automated test cases for APIs, backend systems, and/or UI
• Actively participate in CI/CD pipelines to support continuous testing
• Work closely with developers, product managers, and other QA engineers
• Participate in requirement and design reviews to ensure testability and risk coverage
• Collaborate with developers to debug issues and validate fixes
• Analyze test results and provide quality insights to support release decisions
• Contribute to improving test coverage, tools, and processes

• 4 to 5 years of experience in software quality engineering or test automation roles
• Strong hands‑on experience in test automation development
• Strong understanding of operating systems, network security concepts, and firewall technologies
• Working knowledge of networking technologies and protocols such as HTTP, TCP/IP, UDP, DHCP, DNS, proxy servers, and load balancers
• Experience with cloud platforms such as AWS, Azure, and GCP
• Experience working in Agile environments and supporting continuous integration practices, including nightly builds and release cycles
• Ability to design tests and write test code independently
• Understanding of multi-platform issues across UNIX, Mac, and Windows environments
• Understanding of virtual platforms such as ESX, Xen, Proxmox, and cloud environments
• Understanding of open-source test automation tools
• Understanding of REST, YANG modelling, and JSON
• Understanding of crun, microservices, containers, Kubernetes, and Kubernetes clusters
• Awareness of tools and technologies such as Git, Jenkins, Selenium, JIRA, and Confluence
• Excellent communication, analytical, and problem-solving skills
• A collaborative team player with a positive attitude and a proactive approach to finding innovative solutions