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Writer is an enterprise generative AI platform enabling leading companies like Mars, Marriott, Uber, and Vanguard to build and deploy AI agents grounded in their data. The company is valued at $1.9B and backed by top-tier investors including Premji Invest and Radical Ventures.
You'll join Writer's security team as a Staff Detection and Response Engineer, responsible for protecting the AI infrastructure that powers enterprise-wide AI transformation. This role combines hands-on security engineering with strategic threat intelligence to defend cutting-edge AI systems against evolving adversaries.
Key responsibilities include:
- Design and implement detection strategies for AI-specific threats including prompt injection, model extraction, data poisoning, adversarial examples, and unauthorized access to training datasets across distributed infrastructure
- Build automated response playbooks and orchestration workflows that contain threats without human intervention, reducing mean time to response from hours to minutes
- Lead security incident response coordination across Cloud, AppSec, Enterprise, and AI Security teams, conducting forensic investigations on training pipeline attacks and model manipulation attempts
- Proactively hunt for sophisticated threats across GPU clusters and training infrastructure by analyzing model outputs, reproducing AI-specific vulnerabilities, and identifying visibility gaps
- Build detection-as-code frameworks with version control and automated deployment, onboard telemetry from AI training and inference endpoints, and create security dashboards
- Collaborate cross-functionally as the operational security partner, translating threat research into production detections and enabling responsible AI development
- Maintain 24/7 on-call rotation for critical AI security incidents
Required qualifications:
- 3-5+ years in security operations, detection engineering, or incident response with proven track record stopping sophisticated attacks in production
- 3+ years specifically securing AI/ML infrastructure, high-performance computing, or distributed systems at scale
- Strong programming skills in Python, KQL, SPL, or similar languages for building custom detection logic and automating response workflows
- Experience with SIEM platforms, detection technologies, and forensic investigation techniques
- Self-directed execution mindset with track record securing high-value intellectual property and proactive threat hunting
- Ability to build detections for novel attack techniques without established patterns
This role reports to the Head of Security Operations and is based in London, with office hubs also in San Francisco, New York, Seattle, Austin, and Chicago.
About Writer
AI / Data / Infrastructure; SaaS / Enterprise Software — enterprise generative AI platform for business teams.
