UEBA Systems Engineer – Build Scalable Security Detections

Cloudflare; New York (NY); On-site; USD 150,000 - 206,000; Full time

Job summary

Cloudflare in New York is seeking a Systems Engineer to join the UEBA team and help build and operate production services that ingests signals from Cloudflare One, evaluates risk scores, and supports customer-facing experiences.

You will own well-defined projects through design, implementation, testing, rollout, and operational follow-through, collaborating with Product and partner teams to improve detections and investigations.

Qualifications

• 3+ years of professional experience building, testing, and operating backend or distributed systems in production.
• Strong proficiency in at least one systems programming language (e.g., Go, Rust, C/C++) with a track record of writing clean, maintainable code.
• 3+ years of practical experience with databases and data-intensive services—for example, PostgreSQL, ClickHouse, or comparable relational or analytical stores.
• Experience reasoning about event-driven systems: message delivery, duplicate or late events, state, failure recovery, and safe changes to live consumers or APIs.
• Clear written and verbal communication, and an ability to work through technical decisions with product and engineering partners.
• Experience using metrics, logs, traces, profiling, and experiments to understand production behavior and validate improvements
• Bring strong opinions, clear judgment, and a willingness to revise your view when data, users, or production reality prove otherwise.

Responsibilities

• Build behavioral detections . Turn product requirements and available telemetry into production-ready detections across signals such as Access, Gateway, DNS, device posture, and data protection. Define the data dependencies, evaluation approach, and how you will assess signal quality before release.
• Make risk understandable . Help connect detection output to event history, logs, and customer-facing investigations so practitioners can see what triggered a finding and how a user’s risk changed.
• Design & Scale Infrastructure : Architect, deploy, and maintain robust distributed systems, focusing on high availability, low latency, and horizontal scalability.
• Collaborate across teams . Collaborate with Product and engineers in Access, Gateway, Analytics and Reporting, Logs, and other data-producing or data-consuming teams to agree on event contracts and deliver end-to-end functionality.
• Ensure Reliability . Participate in architecture reviews, capacity planning, and proactive system health monitoring to guarantee maximum uptime and resilience.

Skills

Go/Rust/C/C++

Distributed systems

PostgreSQL/ClickHouse

Event-driven architectures

Technical communication

Metrics/logs/tracing

Tools

Kafka

Kubernetes

Job description

Cloudflare in New York is seeking a Systems Engineer to join the UEBA team and help build and operate production services that ingests signals from Cloudflare One, evaluates risk scores, and supports customer-facing experiences.

You will own well-defined projects through design, implementation, testing, rollout, and operational follow-through, collaborating with Product and partner teams to improve detections and investigations.