Cloudflare
Senior Software Engineer - Addressing Team
Hybrid +3 · Senior · Full-time · Posted Sep 1, 2026
- Location
- Hybrid
Austin, TX, United States
Lisboa, Lisboa, Portugal
London, United Kingdom
About the job
Build and operate core addressing services, APIs, and data models that support Cloudflare’s network and customer IP-address management needs.
What you'll do
- Design, develop, and maintain Go-based microservices, APIs, and data models.
- Build scalable, reliable automated systems for IP address configuration and traffic engineering.
- Work with network, reliability, and product engineers to deliver platforms used across Cloudflare.
What they ask for
- Experience writing high-quality code in one or more system programming languages (Go, Python, C/C++).
- Experience with modern Unix/Linux development and runtime environments.
- Solid understanding of TCP/IP and basic networking, plus a basic understanding of HTTP/S/TLS.
- Working knowledge of SQL and relational databases, and experience building and operating distributed systems.
Nice to have
- Experience with Rust.
- Familiarity with anycast or multi-site unicast networks, DNS traffic management, or UI design and implementation.
Tools
Go, PostgreSQL, Docker, Kafka, Lua, Clickhouse, SaltStack, Prometheus
AI focus
The posting encourages AI-native curiosity and describes leveraging AI as a partner to solve problems and ship faster; no specific AI development work is stated.
Model-written summary · the original posting is authoritative