Senior Systems Engineer – Scale & Security (Go/Rust)

Cloudflare, Inc.; United States; Hybrid; USD 66,000 - 91,000; Full time

Job summary

Cloudflare, Inc. in Lisbon is seeking an experienced software developer with 5+ years hands-on; proficiency in Go or Rust and exposure to Kubernetes, Kafka, Salt, and Systemd. You will design systems, deploy services at scale, and collaborate across teams to advance security-focused products.

This role requires two days in the office and a hybrid work arrangement. The position emphasizes shipping with modern tooling, strong Linux fundamentals, and a proactive culture that values initiative and

Qualifications

• Minimum 5 years of professional experience as a software developer.
• Proficiency with at least one of Go or Rust and exposure to devops tooling like Kubernetes, Salt, Kafka or Systemd.
• Strong Linux/Unix fundamentals and experience with distributed systems at scale.
• Experience with cybersecurity is preferred but not essential.

Responsibilities

• Design systems and write code following bleeding edge industry best practices and help others on the team do the same.
• Deploy and maintain live software-based services at scale (up to 100m requests / second, 1m customers). Take regular shifts as part of the team’s On Call rota.
• Support and grow other Engineers through knowledge sharing.
• Keep up to date with trends in detecting current and emerging security risks to web applications and provide input on how these impact the company’s products.
• Work with Engineers and Product Managers outside your immediate team in communicating our roadmap and getting things done.

Skills

Go

Rust

Kubernetes

Salt

Kafka

Systemd

Linux fundamentals

Distributed systems

Cyber security

Job description

Cloudflare, Inc. in Lisbon is seeking an experienced software developer with 5+ years hands-on; proficiency in Go or Rust and exposure to Kubernetes, Kafka, Salt, and Systemd. You will design systems, deploy services at scale, and collaborate across teams to advance security-focused products.

This role requires two days in the office and a hybrid work arrangement. The position emphasizes shipping with modern tooling, strong Linux fundamentals, and a proactive culture that values initiative and