Senior MCP Portals Engineer — Hybrid, Lisbon, Equity

Cloudflare, Inc.; Lisboa; Hybrid; EUR 66,000 - 91,000; Full time

Benefits offered by this job

Equity plan

Job summary

Cloudflare MCP Server Portals seeks a Senior Systems Engineer to lead the design, delivery, and operation of distributed services. You will manage authentication, OAuth flows, and Zero Trust enforcement across Cloudflare’s global network while guiding complex projects with cross‑functional teams.

You will own architectural tradeoffs, ensure secure and scalable solutions, and mentor peers, with a focus on reliable production systems that support internal and external customers.

Qualifications

• 6+ years of experience building and operating distributed systems, backend services, or infrastructure products in production.
• Demonstrated ownership of complex production services or projects, including architecture, implementation, rollout, and operational outcomes.
• Deep understanding of HTTP, APIs, proxies, streaming connections, and distributed‑systems failure modes.
• Experience with authentication/authorization technologies such as OAuth 2.0, OpenID Connect, JWTs, PKCE, or policy-based access control.

Responsibilities

• Lead the design, implementation, and operation of globally distributed services that connect MCP clients to authorized upstream MCP servers.
• Own complex features and service improvements from problem definition and design through implementation, rollout, observability, and production support.
• Shape technical decisions for MCP Portals, including service boundaries, security controls, compatibility, and tradeoffs among reliability, latency, and resource use.
• Evolve our implementation as the MCP specification changes, planning safe migrations for existing customers and integrations.
• Design and review authentication and authorization flows involving Cloudflare Access, OAuth, identity, credential handling, and delegated access to upstream services.
• Improve the reliability and scalability of multi‑tenant systems built on the Cloudflare Developer Platform, using production data to identify and prioritize work.
• Strengthen observability through structured logs, metrics, traces, dashboards, and actionable alerts; participate in production support and incident response.
• Lead investigations of complex customer issues across services and teams, identify root causes, and drive fixes that prevent recurrence.
• Review designs and code, mentor engineers, and raise the quality of testing, deployment, and operational practices on the team.
• Partner with product, security, and engineering teams to turn customer needs and emerging standards into maintainable product capabilities.

Skills

Distributed systems

Owner of production services

HTTP/APIs

OAuth/OIDC/JWT

Security-sensitive systems

Production issue diagnosis

Backward-compatible changes

Mentoring/communication

Job description

Cloudflare MCP Server Portals seeks a Senior Systems Engineer to lead the design, delivery, and operation of distributed services. You will manage authentication, OAuth flows, and Zero Trust enforcement across Cloudflare’s global network while guiding complex projects with cross‑functional teams.

You will own architectural tradeoffs, ensure secure and scalable solutions, and mentor peers, with a focus on reliable production systems that support internal and external customers.