# Staff Software Security Engineer at Anthropic

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Design and build security controls for l

- **Company:** Anthropic (https://jobs.trythestack.co/companies/anthropic)
- **Location:** United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 10+ years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Software security, Python, Go, Rust, C++, Kubernetes, Cloud security, Network security, Infrastructure as code, GitOps, Threat modeling, IAM, Container orchestration, CI/CD, Mentorship
- **Posted by employer:** 2026-09-03
- **Added to The Stack:** 2026-09-04
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://job-boards.greenhouse.io/anthropic/jobs/5022845008 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/staff-software-security-engineer-anthropic

## About the role

Responsibilities:
- Design and build security controls for large-scale AI clusters across cloud and bare-metal (IAM, network segmentation, encryption, mTLS).
- Define and implement default-deny networking, cloud firewall policies, private connectivity and secure service identity practices.
- Ship security controls as infrastructure-as-code and GitOps flows so new clusters inherit secure defaults.
- Build telemetry, detection and automated remediation for network boundary drift and exfiltration paths.
- Secure CI/CD pipelines, Kubernetes clusters and container runtimes; embed secure-by-design practices across development workflows.
- Threat model complex multi-cloud topologies, review designs at architecture time, mentor engineers and contribute to hiring and team growth.

Requirements:
- 8–15+ years of engineering experience building and operating critical, large-scale systems.
- Strong software engineering skills in Python or a systems language (Go, Rust, C/C++).
- Hands-on experience with cloud networking, VPC design, firewall policy, egress controls and private interconnects.
- Deep knowledge of Kubernetes security, network policy, service identity and container hardening.
- Experience with infrastructure-as-code/GitOps and automating secure deployments at scale.
- Proven ability to threat model multi-cloud systems, communicate risk clearly, and coach engineers on secure design.

## Responsibilities

The role involves building and maintaining security infrastructure for large-scale AI clusters, including network segmentation, IAM, and encryption controls. You will also design secure-by-design development workflows and mentor engineering teams to ensure high security standards across the organization.

## Requirements

Candidates must have 8-15+ years of software engineering experience with strong proficiency in Python or systems languages like Go, Rust, or C++. Expertise in cloud network security, Kubernetes, and threat modeling for complex distributed environments is required.

## FAQ

- **Is this Staff Software Security Engineer role still open?** It was posted on 2026-09-03. Listings more than 30 days old may no longer be active, so check Anthropic's site before applying.
- **Does Anthropic offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Anthropic's site.
- **Where is this role located?** The listing gives the location as United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: Software security, Python, Go, Rust, C++, Kubernetes, Cloud security, Network security, Infrastructure as code, GitOps, Threat modeling, IAM, Container orchestration, CI/CD, Mentorship.

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