Senior Security Engineer

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.

We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

• Build Detection & Response Systems: Design, write, and maintain production-quality detections, automations and integrations (detections-as-code, SOAR playbooks, data and enrichment pipelines) that scale our monitoring capability and reduce manual toil.
• Own Tooling & Platform: Develop and improve the tooling the global SIRT/SOC depends on alert quality and enrichment, case-management integrations and automation that powers reliable "follow-the-sun" hand-offs.
• Exercise High Autonomy: Act as the primary Incident Commander for the European time zone, making critical, time-sensitive decisions independently before US HQ comes online.
• Drive Strategy & Architecture: Shape the technical direction of the detection & response engineering function, specifically architecting how global hand-offs and "follow-the-sun" models can be optimized and automated.
• Command Security Incidents: Ensure serious threats and impacts are understood, mitigated, and learned from with speed and professionalism, often leading responses end-to-end without immediate escalation paths during local hours — and turning what you learn into durable, automated detections.
• Conduct Forensic Investigations & Threat Hunt: Dig into complex context to determine whether threats exist, take decisive action and proactively hunt for anomalous activity in our signals, distinguishing outliers from threats.
• Lead High-Profile Responses: Collaborate with Security and Engineering to lead responses to major vulnerabilities or platform-wide events.
• Collaborate Cross-Functionally: Work with Legal, HR, Executive teams, and external partners (Developers & Customers). You will also travel semi-regularly to the USA to visit HQ, ensuring deep alignment with central engineering and security leadership.

• Experience: 10+ years across security engineering, Infosec, IT, Infra/SRE, and/or Incident Response.
• Specialization: 7+ years specifically in Detection or Response, with a track record of building, writing detections, automation or security tooling, not solely operating.
• Engineering Proficiency: Comfortable writing and reviewing production-quality code (Scripting) and building automations, integrations and data pipelines that others depend on.
• Autonomous Leadership: Proven ability to work independently in satellite offices or distributed teams. You are comfortable being the "person in charge" during your shift and making calls that impact the business.
• Incident Command: Extensive experience operating as an incident commander. You can flex into deep engineering work but also possess the executive presence to coordinate responders and communicate status to leadership.
• Investigations: Expert-level capability investigating threats in enterprise and production environments, taking ownership from identification to resolution.
• Knowledge/Tools/Techniques: Deep understanding of security tooling (SIEM, EDR, IDS/IPS, NDR, SOAR) and experience extending or building on it. You are proficient in applying Incident Response frameworks (NIST IR Lifecycle, Cyber Kill Chain, MITRE ATT&CK) to real-world scenarios, and you collaborate effectively with engineering colleagues, leveraging extensive expertise across infrastructure and technologies (Public Cloud, OS, Virtualization, Containerization, Networking, Build/Development infrastructure, and Hardware).
• Education: Bachelor's degree in Computer Science, Cybersecurity, or a related technical field; advanced degree preferred or equivalent experience.

• This role is based in London, UK. You will be working from a dedicated, private space located within a shared office environment, designed to enable collaboration while remaining secure.