Jobs SOPHOS LIMITED Software Development Engineer (Test) 3
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Verified Skilled Worker sponsor

Software Development Engineer (Test) 3

SOPHOS LIMITED
United Kingdom Posted 9 September 2026 Apply by 16 October 2026
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Visa sponsorship Home Office sponsor register · Skilled Worker route

This role is listed by an employer that holds a live Home Office sponsor licence on the Skilled Worker route.

Salary for this roleNot listed
Standard threshold£41,700 a year
New-entrant threshold£33,400 a year

Closest occupation match: SOC 2129, Engineering professionals not elsewhere classified. Home Office going rate for this occupation: £46,100 a year.

Individual eligibility depends on personal circumstances. These figures are public reference information, not advice or a verdict on this job.

Role description

About Us

Sophos is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Sophos meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Sophos X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response.

Sophos offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM. Together with expert advisory services, these capabilities help organizations proactively reduce risk and respond faster, with the visibility and scalability needed to stay ahead of evolving threats.

Sophos goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com.

About the Linux Behavioural Engine team

The Linux Behavioural Engine team builds the runtime detection capability that protects Linux servers, workloads and containers. Our engine watches process, file, network and kernel-level activity as it happens, correlates it into meaningful behaviour, and decides in real time whether something is benign or an attack in progress.

That means we live close to the kernel, across a wide spread of distributions, kernel versions and deployment shapes bare metal, VMs, containers and managed Kubernetes. Getting this right at scale is as much a testing and infrastructure problem as it is a detection problem: a change that behaves perfectly on Ubuntu 24.04 may behave very differently on a hardened RHEL kernel or inside a locked-down EKS node.

We are a small, autonomous team that owns its own CI, its own test estate and its own quality bar. It is a good place to broaden quickly. You will get exposure to CI, cloud infrastructure, Kubernetes and low-level Linux security in one role, with senior engineers close at hand to learn from.

Interested? Apply while it's open. Closes 16 October · SOPHOS LIMITED has 26 other sponsored roles if this one goes.
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Last verified against our ingestion on 16 September 2026; sponsor register dataset 2026-09-25.

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