PitchMeAI Jobs
Anthropic

Staff Software Security Engineer

Anthropic · London, UK

Posted 13 days ago

or apply directly on Anthropic's site. We never take the application ourselves.

Is this posting real?

This role has been open
13 days
Anthropic's roles stay open a median of 40 days
Reposted
No
Salary listed
No
0% of Anthropic's roles list one
Ghost-job risk at Anthropic
high
276 stale, 19 reposted of 603 open
Hiring momentum
795 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-17

Measured from postings appearing on and disappearing from Anthropic's own greenhouse board since 2026-08-03. Full hiring picture for Anthropic.

About this role

As a Staff Software Security Engineer at Anthropic, you will be responsible for building security for large-scale AI clusters across multiple environments, implementing network security controls, and designing secure development workflows. You will also mentor engineers, contribute to team growth, and ensure that security requirements are integrated from the design phase of projects. Your role will involve hands-on engineering, threat modeling, and collaboration with various teams to maintain the safety and trust of AI systems.

Our read on this posting3.6out of 5
benefits
4/5
freshness
4/5
career value
5/5
role clarity
5/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Anthropic as an employer.

What you need

  • 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
  • Working knowledge of Kubernetes security and networking
  • Experience with threat modeling and risk assessment for networked and multi cloud systems

Nice to have

  • Secured Kubernetes networking at scale
  • Worked on interconnects and private connectivity between cloud providers and physical data centers
  • 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

What you get

  • Annual Salary: £255,000 — £325,000 GBP
  • Visa sponsorship available
  • Location-based hybrid policy
  • Competitive compensation and benefits
  • Optional equity donation matching
  • Generous vacation and parental leave

Worth weighing

  • No specific technology stack mentioned, but strong emphasis on security practices
  • Role requires significant experience, which may limit opportunities for less experienced candidates
  • The hybrid work policy requires at least 25% in-office presence, which may not suit all candidates

Summarised from Anthropic's posting. Read the full original.

Listed by Anthropic on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.

More roles at Anthropic

All 603 open roles at Anthropic →