Senior Security Platform Engineer

Cloudflare; Seattle (WA); On-site; USD 185,000 - 254,000; Full time

Job summary

Cloudflare in Seattle is seeking a Security Platform Engineer to design, build, and operate secure, resilient distributed systems for secrets and identity across our global network.

You will strengthen internal PKI, participate in on-call incident response, and help internal teams use our services securely. Strong emphasis on cryptography, Go and Python skills are valued. This is a highly technical, fast-paced role with a culture of iteration and AI-assisted tooling.

Qualifications

• Software development and distributed systems design expertise.
• Linux/UNIX system administration proficiency.
• Strong security background with a focus on implementation, not policy/compliance.

Responsibilities

• You’ll build and operate secure and resilient distributed systems for secrets and key management, running across our network that spans more than 310 cities in over 120 countries.
• Our focus is strengthening/re-architecting internal PKI and machine/workload identity.
• You’ll run and support the systems we build, both in an operational sense and by helping other internal developers use them.
• You will participate in the On Call rotation for emergency incident response.
• You’ll consult on the design and architecture of new systems and products to ensure they are built securely and use our services correctly.

Skills

Software development

Distributed systems design

Linux/UNIX administration

Security engineering

Tools

HashiCorp Vault

OpenBao

Go

Python

Salt

Job description

Cloudflare in Seattle is seeking a Security Platform Engineer to design, build, and operate secure, resilient distributed systems for secrets and identity across our global network.

You will strengthen internal PKI, participate in on-call incident response, and help internal teams use our services securely. Strong emphasis on cryptography, Go and Python skills are valued. This is a highly technical, fast-paced role with a culture of iteration and AI-assisted tooling.