Location
London

Hours
Full Time

Salary
Negotiable

About the Role
Meta's Infrastructure Security Monitoring (ISM) team is seeking an experienced engineer to help secure the infrastructure that connects over a billion users. You will be responsible for building, implementing, and operationally supporting detections throughout our infrastructure. This role involves researching and developing innovative security solutions to protect Meta's infrastructure and users. Key focus areas include large-scale DDoS detection, security tool development, and defense against internal and external attacks. You will have opportunities to develop expertise across these domains while contributing to the security posture of Meta's critical infrastructure.

Responsibilities include iterating security posture to better protect against attacks and detect new vectors, leading efforts to mitigate and investigate security incidents, utilizing frameworks to develop and scale detection, mitigation, and response automation tooling, evaluating and testing new vendor and home-grown security initiatives, mentoring and evangelizing security practices across engineering teams, and actively operating and defending critical infrastructure to keep Meta safe.

Experience
- 5+ years of development experience in at least one programming language (Python, Go, etc.) applied to security tool development, automation, and programmatic solutions defending infrastructure
- 3+ years of experience in offensive/defensive security or systems engineering
- Knowledge of network protocols (TCP/IP, computer networking, routing and switching) and Unix-based systems
- Experience researching, building, and implementing defensive security systems against internal and external attack vectors
- Experience designing and building application, system, and network security monitoring to aid detection or forensic investigations
- Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies
- Experience mentoring and promoting industry security practices
- Experience developing baselines and investigating anomalies to identify suspicious behavior
- Experience developing automation and utilizing frameworks to scale detection, mitigation, or response tools
- Demonstrated ability to integrate AI tools to optimize/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements)
- Understanding of MITRE ATT&CK Framework and associated threat actor techniques
- Experience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)
- Experience threat hunting using threat intelligence to proactively investigate potential risks and suspicious behavior
- Background in intrusion detection, security investigations, and incident response

About you
You are motivated to defend infrastructure against threat actors and have a deep interest in security and innovation. You are proactive in identifying scalable detection opportunities and codifying your ideas into actionable solutions. You thrive in a collaborative environment, mentoring others and evangelizing security best practices across teams. You stay current with emerging technologies, especially in AI, and apply them responsibly to enhance security operations.

Qualifications
Currently has, or is in the process of obtaining, a Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience. Degree must be completed prior to joining Meta.