Staff/Principal Software Engineer - Security Platform

Cloudflare is a technology company focused on helping build a better Internet through secure and high-performance network services. The Security Platform team is seeking a Staff/Principal Software Engineer to build and operate resilient distributed systems for secrets and key management, internal PKI, and machine/workload identity. The role also involves supporting internal developers, advising on secure system architecture, and participating in on-call support as needed.

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’ll consult on the design and architecture of new systems and products to ensure they are built securely and use our services correctly
• This role may require flexibility to be on-call outside of standard working hours to address technical issues as needed

Requirements:

• 8+ years of relevant professional experience
• Software development and distributed systems design expertise
• Strong security background with a focus on implementation, not policy/compliance
• Track record of contributing to open source security or distributed systems projects
• Cryptography background and ability to work with cryptosystems at the primitives level
• Experience with HSMs, TPMs, or other platform TEEs (e.g. AMD SEV, Intel SGX, Apple Secure Enclave)
• Familiarity with HashiCorp Vault or OpenBao, or similar
• Linux/UNIX system administration proficiency
• Familiarity with Go and/or Python + Salt specifically