Systems Engineer, MCP Portals - OAuth & Zero Trust Equity

Webhosting; Lisboa; On-site; EUR 45,000 - 62,000; Full time

Benefits offered by this job

Equity plan

Job summary

Cloudflare in Lisbon, Portugal is seeking a Systems Engineer for the MCP Portals team to design, build, and operate globally distributed services that authenticate users, manage OAuth credentials and sessions, and enforce Zero Trust policies across Cloudflare’s network.

You will collaborate with multiple product and security teams to evolve the MCP protocol, improve reliability and observability, and respond to production incidents with a strong ownership mindset.

Responsibilities

• Design, build, and operate the globally distributed services that connect MCP clients to authorized upstream MCP servers.
• Evolve our implementation as the MCP specification changes.
• Build secure authentication and authorization flows involving Cloudflare Access, OAuth, identity, and delegated access to upstream services.
• Improve the reliability, scalability, latency, and resource efficiency of multi-tenant systems built on the Cloudflare Developer Platform.
• Develop observability through structured logs, metrics, traces, dashboards, and actionable alerts, and participate in production support and incident response.
• Investigate customer issues across multiple services and teams, distinguishing product defects from upstream failures, policy configuration, and infrastructure dependencies.
• Collaborate with product, security, and engineering partners to turn customer needs and emerging standards into well-tested, maintainable product capabilities.

Job description

Cloudflare in Lisbon, Portugal is seeking a Systems Engineer for the MCP Portals team to design, build, and operate globally distributed services that authenticate users, manage OAuth credentials and sessions, and enforce Zero Trust policies across Cloudflare’s network.

You will collaborate with multiple product and security teams to evolve the MCP protocol, improve reliability and observability, and respond to production incidents with a strong ownership mindset.