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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Security Engineer - **Company:** Anthropic - **Location:** London, UK - **Experience:** Expert - **Salary:** £255,000.0 - £325,000.0 - **Contract:** Permanent contract - **Skills:** C++ (Programming Language), Cloud Database, Code Review, Computer Networks, Data Centers, DevOps, Python (Programming Language), Network Security, Network Segmentation, Software Engineering, Istio, Software Security, Multi-Cloud, Amazon Virtual Private Cloud (VPC), Kubernetes - **Published:** September 6, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5872126339 ## About the Role * Have 8-15+ years of software engineering experience implementing and maintaining critical systems at scale * Strong software engineering skills in Python or at least one systems language (Go, Rust, C/C++) * Experience implementing and operating critical systems at scale using DevOps and cloud automation practices such as infrastructure as code * Hands-on network security engineering in cloud or on-prem environments, for example VPC design, cloud firewall policy, egress control, private service connectivity or network segmentation * Working knowledge of Kubernetes security and networking, including network policy, service identity and container hardening * Experience with threat modeling and risk assessment for networked and multi cloud systems * Track record of driving engineering excellence through high standards, constructive code reviews and mentorship * Clear communicator who can translate technical concepts across organizational levels and bring clarity and ownership to ambiguous technical problems * Low ego, high empathy engineer who attracts talent and supports diverse, inclusive teams * Experience supporting fast-paced startup engineering teams * Secured Kubernetes networking at scale (CNI, network policy, service mesh or mTLS rollouts) or worked in high-assurance environments where controls had to be evidenced, not just deployed * Worked on interconnects and private connectivity between cloud providers and physical data centers, including management-plane and out-of-band network security * Built network traffic visibility or exfiltration detection systems * Exposure to large-scale distributed training and what it demands of a network * Led cross-functional security initiatives and navigated complex organizational dynamics * Managing infrastructure through automated configuration and policy enforcement * Hardening containerized applications and enforcing security policies The annual compensation range for this role is listed below. For sales roles, the range provided is the role's On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role. Annual Salary: £255,000 - £325,000 GBP Minimum education: Bachelor's degree or an equivalent combination of education, training, and/or experience Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. 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