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Anthropic

Builds Claude AI models with a focus on safety

Staff Software Security Engineer

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-timeLondon, UK£255k - £325k /yr

About the Job

Requirements

  • Have 8–15+ years of software engineering experience implementing and maintaining critical systems at scale.
  • Have strong software engineering skills in Python or at least one systems language, such as Go, Rust, C, or C++.
  • Have experience implementing and operating critical systems at scale using DevOps and cloud automation practices such as infrastructure as code.
  • Have hands-on network security engineering experience in cloud or on-premises environments, such as VPC design, cloud firewall policy, egress control, private service connectivity, or network segmentation.
  • Have working knowledge of Kubernetes security and networking, including network policy, service identity, and container hardening.
  • Have experience with threat modeling and risk assessment for networked and multi-cloud systems.
  • Have a track record of driving engineering excellence through high standards, constructive code reviews, and mentorship.
  • Be able to translate technical concepts across organizational levels and bring clarity and ownership to ambiguous technical problems.
  • Have experience supporting fast-paced startup engineering teams.
  • Have a bachelor's degree or an equivalent combination of education, training, and/or experience; demonstrate a field relevant to the role through coursework, training, or professional experience.

Responsibilities

  • Build security for large-scale AI clusters across multiple clouds and bare-metal data centers, including IAM, network segmentation, and encryption controls.
  • Design and implement network security controls, including default-deny ingress and egress, segmentation between research, training, and production environments, private connectivity across clouds and data centers, cloud firewall policy, and mTLS with service identity.
  • Ship security controls as secure defaults using infrastructure as code and GitOps workflows so new clusters, VPCs, and data center links inherit the appropriate boundaries.
  • Build visibility into network traffic and boundary drift, with detection for exfiltration paths and automated remediation where safe.
  • Design secure-by-design development workflows and CI/CD pipelines across services, using expertise in Kubernetes security, container orchestration, and identity management.
  • Threat model and assess risk for complex multi-cloud and networked environments, and join infrastructure networking, cluster, and data center teams at design time so topology, routing, and firewall decisions incorporate security requirements from the outset.
  • Mentor engineers and contribute to hiring and growth of the Security team.

Desired Qualifications

  • Have secured Kubernetes networking at scale, including CNI, network policy, service mesh, or mTLS rollouts, or have worked in high-assurance environments where controls had to be evidenced, not just deployed.
  • Have worked on interconnects and private connectivity between cloud providers and physical data centers, including management-plane and out-of-band network security.
  • Have built network traffic visibility or exfiltration detection systems.
  • Have exposure to large-scale distributed training and its network demands.
  • Have led cross-functional security initiatives and navigated complex organizational dynamics.
  • Have managed infrastructure through automated configuration and policy enforcement.
  • Have hardened containerized applications and enforced security policies.

About the Company

Anthropic

Builds Claude AI models with a focus on safety

Anthropic builds the Claude family of AI models and sells them to businesses, software developers, and consumers, with research on making AI safe and understandable at the center of its work. In 2024 it introduced the Model Context Protocol, an open standard for connecting AI assistants to outside apps and data that OpenAI and Google adopted the next year. People use the Claude app to write and analyze files, programmers hand coding tasks to Claude Code, and companies build Claude into their own products through its API. Anthropic earns money from subscriptions, business plans, and usage-based API fees. Siblings Dario and Daniela Amodei founded Anthropic in 2021 with other former OpenAI employees, and it is based in San Francisco.

Company size
5,001-10,000
Company stage
N/A
Total funding
$243.8B
Headquarters
San Francisco, CA
Founded
2021

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