Senior Platform Engineer - Internal Fraud Signals & Tools

Cloudflare; Austin (TX); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

401(k) plan

Equity

Job summary

Cloudflare is seeking its first software engineer for the Internal Fraud Platform to build the platform that ingests fraud signals from internal systems, evaluates them, and routes decisions for analysts. You will join as a founding engineer and connect Cloudflare's infrastructure with fraud-detection capabilities, shaping the architecture and tooling from day one.

You'll work with data scientists to move models from notebook to production, own end-to-end projects, and ensure reliable, scalable

Qualifications

• Five or more years of professional software engineering experience, or equivalent practical experience.
• Experience building and operating distributed systems or backend services in production.
• Experience designing and building data or event pipelines (e.g., Kafka, Pub/Sub).
• Strong understanding of RESTful APIs, service security, and API standards such as OpenAPI, OAuth, or JWT.
• Working knowledge of SQL, data modeling, and relational databases such as PostgreSQL or MySQL.
• Comfort owning ambiguous, 0-to-1 problems with limited existing infrastructure or precedent.
• Strong troubleshooting, cross-functional communication, and project ownership skills.

Responsibilities

• Design, build, and operate the services and pipelines that ingest fraud-relevant events from internal systems, evaluate them, and route decisions and case data to the right destinations.
• Expose event data and contextual features their models need, and integrate model decisions back into the pipelines and tools that act on them.
• Create the internal tools and workflows that let Trust & Safety, Support, and Finance analysts investigate flagged accounts and events and take action.
• Drive initiatives from problem definition through design, implementation, rollout, and operation with minimal oversight.
• Build fault-tolerant systems that handle retries, failures, and high event volumes without dropping signals, and maintain the operational health of what you ship.
• As one of the team's first engineers, help establish architecture patterns, tooling choices, and engineering standards.
• Collaborate cross-functionally with Trust & Safety, Data Science, Billing/Fintech, Support, and Product teams to understand fraud vectors and turn them into engineering requirements.

Skills

Distributed systems

Backend services

Data pipelines

REST APIs

API security

SQL databases

Troubleshooting

Cross-functional teamwork

Ambiguity handling

Problem solving

Tools

Kafka

Pub/Sub

PostgreSQL

MySQL

OpenAPI

OAuth

JWT

Job description

Cloudflare is seeking its first software engineer for the Internal Fraud Platform to build the platform that ingests fraud signals from internal systems, evaluates them, and routes decisions for analysts. You will join as a founding engineer and connect Cloudflare's infrastructure with fraud-detection capabilities, shaping the architecture and tooling from day one.

You'll work with data scientists to move models from notebook to production, own end-to-end projects, and ensure reliable, scalable