Global Distributed Systems Reliability Engineer

Cloudflare, Inc.; Lisboa; On-site; EUR 90,000 - 120,000; Full time

Job summary

Cloudflare, Inc. in Lisbon, Portugal is seeking a Systems Engineer to architect, scale, and operate the distributed infrastructure powering our global server fleets.

You will drive automation and reliability, building robust platforms and collaborating with Security, Network Engineering, and Product teams to ensure high availability and low latency across the stack. You will work with Kubernetes, Postgres, and other core technologies while contributing to development of scalable, reliable

Qualifications

• Experience building and managing large-scale distributed systems.
• Proficiency in at least one systems programming or scripting language (Go, Rust, C/C++, Python).
• Deep understanding of Linux/Unix internals (storage subsystems, memory management) and core networking protocols (TCP/IP, DNS, BGP).
• Experience with configuration management and infrastructure-as-code tools (Ansible, Terraform, SaltStack).
• Strong analytical and troubleshooting skills.

Responsibilities

• Architect, deploy, and maintain robust distributed systems, focusing on high availability, low latency, and horizontal scalability.
• Analyse system bottlenecks, optimise kernel and network stacks, and fine-tune resource utilisation across global server fleets.
• Drive Automation: Build and maintain internal tools and automation frameworks to streamline infrastructure deployment, configuration management, and monitoring.
• Ensure Reliability: Participate in architecture reviews, capacity planning, and proactive system health monitoring to guarantee maximum uptime and resilience.
• Collaborate Cross-Functionally: Partner closely with Security, Network Engineering, and Product teams to integrate infrastructure solutions smoothly across the entire stack.

Skills

Distributed systems

Go

Rust

C/C++

Python

Linux internals

Networking

Ansible

Terraform

SaltStack

CI/CD

Kubernetes

Tools

Kubernetes

Docker

PostgreSQL

PgBouncer

Stolon

Kafka

Zookeeper

Ceph

Rook

Vault

Consul

Etcd

Temporal

Job description

Cloudflare, Inc. in Lisbon, Portugal is seeking a Systems Engineer to architect, scale, and operate the distributed infrastructure powering our global server fleets.

You will drive automation and reliability, building robust platforms and collaborating with Security, Network Engineering, and Product teams to ensure high availability and low latency across the stack. You will work with Kubernetes, Postgres, and other core technologies while contributing to development of scalable, reliable