Senior System Engineer

About Us

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.

Available Locations: Lisbon

About the Department

Cloudflare's Network Engineering Team builds and runs the infrastructure that runs our software. The Engineering Team is split into two groups: one handles product development and the other handles operations. Product development covers both new features and functionality and scaling our existing software to meet the challenges of a massively growing customer base. The operations team handles one of the world's largest networks with data centers in 190 cities worldwide and a couple of large specialized data centers for internal needs.

About the role

Cloudflare operates a large global network spanning hundreds of cities (data centers). You will join a team of talented network automation engineers who are building software solutions to improve network resilience and reduce engineering operational toil.

In this role, you will work on a range of tools, infrastructure and services - new and existing - with an aim to elegantly and efficiently solve problems and deliver practical, maintainable and scalable solutions. Leverage AI tools and automated assistants to streamline daily workflows.

Desirable Skills, Knowledge And Experience

BA/BS in Computer Science or equivalent experience

6+ years of SRE, DevOps or Software Engineering experience.

Distributed Systems & Infrastructure - deep understanding of modern Linux internals, containerization (Docker, Kubernetes).

Infrastructure as Code & Automation: Experience with IaC tools and CI/CD pipeline automation.

Proficient in programming languages like Python or Golang.

Observability & Telemetry - hands on experience with Prometheus, Grafana, distributed tracing and metrics- driven alerting.

Systems Design - proven track record of designing reliable, fault-tolerant distributed systems.

Demonstrated experience working alongside AI assistants or automated tools to augment task execution and project delivery

Bonus Points

Knowledge of Networking engineering, with competencies in Layer 2 and Layer 3 protocols and network APIs (gRPC/gNMI, NETCONF).

Experience working with configuration management frameworks: Ansible, Chef, Saltstack.

Experience with declarative configuration management and state-reconciliation systems.

Experience managing internal and/or external customer requirements and expectations

Compensation

For Portugal based hires: Estimated annual salary is between €66,000 - €91,000.

Equity

This role