Senior Systems Engineer, MCP Server Portals

The role

You will lead the design, delivery, and operation of distributed systems that connect AI agents to tools. This involves managing authentication, OAuth credentials, Zero Trust policies, and proxying MCP traffic across a global network.

What you will do

• Lead the design, implementation, and operation of globally distributed services.
• Own complex features from design through implementation, rollout, and production support.
• Shape technical decisions for MCP Portals regarding security, reliability, and latency.
• Evolve implementation as the MCP specification changes.
• Design and review authentication and authorization flows.
• Improve reliability and scalability of multi-tenant systems.
• Strengthen observability through logs, metrics, traces, and dashboards.
• Lead investigations of complex customer issues and drive fixes.
• Review designs and code, mentor engineers, and raise quality of testing and deployment.
• Partner with product, security, and engineering teams.

Required qualifications

• 6+ years of experience building and operating distributed systems, backend services, network services, or infrastructure products in production.
• Demonstrated ownership of complex production services or projects.
• Strong programming skills in TypeScript, JavaScript, Go, Rust, C++, or another language used to build production services.
• Deep understanding of HTTP, APIs, proxies, streaming connections, and distributed-systems failure modes.
• Experience with authentication and authorization technologies such as OAuth 2.0, OpenID Connect, JWTs, PKCE, or policy-based access control.
• Experience designing or operating security-sensitive systems.
• Ability to diagnose difficult production issues using logs, metrics, traces, and error reporting.
• Experience making backward-compatible changes to live systems.
• Clear written and verbal communication skills.

Nice to have

• Experience with the Model Context Protocol
• Familiarity with the Cloudflare Developer Platform or other serverless edge-computing platforms.
• Experience building gateways, forward proxies, identity systems, developer platforms, or Zero Trust and data loss prevention products.

Before you apply

• Applicants who progress to the offer stage may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs.
• This position may require access to information protected under U.S. export control laws.
• Any offer of employment may be conditioned on your authorization to receive software or technology controlled under U.S. export laws without sponsorship for an export license.

About the company

Cloudflare runs one of the world’s largest networks that powers millions of websites and Internet properties. The company protects and accelerates Internet applications without adding hardware or changing code.