🚀 Staff Detection & Response Engineer - AI Security
About WRITER: Orchestrating the Future with Superintelligence
WRITER is at the forefront of expanding human capacity through superintelligence, empowering the world's leading enterprises to orchestrate AI-powered work. Our mission is to deliver powerful, trustworthy AI that seamlessly unites IT and business teams, unlocking enterprise-wide transformation.
With our end-to-end platform, hundreds of global companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents grounded in their proprietary data and fueled by WRITER's enterprise-grade Large Language Models (LLMs). Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.
Founded in 2020 with dynamic office hubs in San Francisco, New York City, Austin, Chicago, and London, our team thinks big and moves fast. We're seeking smart, hardworking builders and scalers to join us in creating a better future of work with AI.
📐 The Role: Define the Future of AI Security
Join WRITER's elite security team as a Staff Detection and Response Engineer and become a pivotal guardian of the cutting-edge AI infrastructure that's reshaping how the world works. This isn't traditional security; you'll be defending sophisticated AI/AGI systems against adversaries whose tactics evolve as rapidly as AI itself advances.
You will design and deploy advanced detection systems to identify novel attacks targeting our AI platform, training data, and model deployments. Crucially, you'll engineer automated response capabilities that scale with our explosive growth, translating threat intelligence into real-time defenses.
This role combines hands-on security engineering with strategic foresight, placing you at the operational core of our security function. You'll lead incident response across multiple teams, hunt proactively for sophisticated threats across GPU clusters and distributed training environments, and conduct forensic investigations into attacks that simply don't exist in textbooks yet.
If you're driven by the unique challenge of securing systems fundamentally different from anything you've protected before, this is your opportunity to define what AI security engineering looks like at an industry-leading scale. You'll collaborate closely with our AI Security research team, Cloud Infrastructure, Software Security Engineering, and AI researchers to forge a defense-in-depth strategy for one of the most valuable AI platforms in the industry. The threats are real, the stakes are high, and the problems are intellectually fascinating.
This role is based in our San Francisco office, reporting directly to our Head of Security Operations.
🦸🏻♀️ What You'll Do: Innovate & Secure
Forge Advanced Detection Strategies: Design and implement sophisticated detection logic to identify AI-specific threats including prompt injection, model extraction, data poisoning, adversarial examples, and unauthorized access to training datasets or model weights across our distributed infrastructure.
Build Self-Healing Security Systems: Engineer automated response playbooks and orchestration workflows that contain threats without human intervention, dramatically reducing mean time to response from hours to minutes and automatically remediating compromised inference endpoints.
Lead Critical Incident Response: Coordinate security incident response across all relevant teams (Cloud, AppSec, Enterprise, AI Security) when AI infrastructure or models are compromised. Conduct deep forensic investigations into training pipeline attacks and model manipulation attempts, drafting clear incident communications for engineering and executive leadership.
Proactive Threat Hunting: Hunt for sophisticated threats across GPU clusters and training infrastructure by analyzing model outputs for signs of compromise, reproducing AI-specific vulnerabilities from cutting-edge security research, and identifying visibility gaps in distributed training environments before adversaries exploit them.
Operationalize Security with Code: Build detection-as-code frameworks with robust version control and automated deployment. Onboard telemetry from AI training infrastructure and inference endpoints, and create actionable dashboards that track model security metrics, GPU utilization patterns, and access to sensitive research data.
Cross-Functional Partnership: Act as the crucial operational security partner for all teams – translating AI Security's threat research into production detections, monitoring Cloud Infrastructure's GPU clusters for threats, detecting customer-impacting incidents for Software Security Engineering, and enabling responsible AI development through stringent security guardrails.
Maintain Critical On-Call: Participate in a 24/7 on-call rotation for critical AI security incidents, responding to real-time threats targeting our platform while continuously improving detection coverage and automation capabilities as our AI systems evolve.
⭐️ What You'll Bring: Your Expertise & Vision
Proven Experience: 3-5+ years in security operations, detection engineering, or incident response with a proven track record of identifying and stopping sophisticated attacks in production environments.
AI/ML Security Specialization: At least 3+ years specifically securing AI/ML infrastructure, high-performance computing environments, or other distributed systems at scale.
Strong Programming & Scripting Skills: Proficiency in Python, KQL, SPL, or similar languages, enabling you to build custom detection logic, automate response workflows, and create tools that operationalize security at scale across cloud-native and distributed computing environments.
Detection & Forensics Mastery: Extensive experience with SIEM platforms, advanced detection technologies, and forensic investigation techniques. Demonstrated ability to build detections for novel attack techniques that lack established patterns and to conduct forensics in complex, distributed environments.
Self-Directed Execution: A strong self-directed execution mindset with a track record of securing high-value intellectual property, automating incident response in complex environments, and identifying critical security gaps through proactive threat hunting before they become incidents.
Alignment with WRITER's Values: Deep alignment with WRITER's core values – you naturally Connect across security, infrastructure, and AI research teams to build comprehensive defenses; you Challenge assumptions about what's possible in AI security engineering; and you Own the protection of our AI platform with unwavering accountability and a commitment to staying ahead of evolving threats.
🍩 Benefits & Perks (UK full-time employees): Generous PTO, plus company holidays Wellness stipend for gym, massage/chiropractor, personal training, etc. Company-wide off-sites and team off-sites
Comprehensive medical and dental insurance
Paid parental leave for all parents (16 weeks)
Fertility and family planning support
Early-detection cancer testing through Galleri
Competitive pension scheme and company contribution
Annual work-life stipends for:
Learning and development stipend
Competitive compensation and company stock options