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Systems Engineer, MCP Portals

Lisbon, Portugal💼 Full-time💰 $45,000–$62,000🗓 2026-09-18 → 2026-09-26

Core

Build and operate distributed systems that authenticate users, manage OAuth credentials, enforce Zero Trust policies, and proxy Model Context Protocol (MCP) traffic across Cloudflare's global network.

Role type

Senior Systems Engineer (Distributed Systems & Security)

Builds

Secure MCP Server Portals connecting AI agents to internal and third-party tools

Domain

Internet Infrastructure, Distributed Systems, Security, AI Protocols

Deliverable

production ML models | product features | infrastructure

Required skills

Distributed systems design, Backend services, Network services, TypeScript/JavaScript/Go/Rust/C++, HTTP/APIs/Proxies, Observability (logs/metrics/traces), Production debugging, Security boundaries, Concurrency, State management

Preferred skills

OAuth 2.0/OpenID Connect/JWTs/PKCE, Model Context Protocol (MCP), Cloudflare Developer Platform, Serverless edge computing, Gateways/Forward proxies, Zero Trust/DLP

Technologies

TypeScript, JavaScript, Go, Rust, C++, HTTP, OAuth, MCP, Cloudflare Access

Responsibilities

Design and operate globally distributed services connecting MCP clients to upstream servers; Evolve implementation as MCP specification changes; Build secure authentication and authorization flows; Improve reliability and scalability of multi-tenant systems; Develop observability and participate in incident response; Investigate customer issues across services; Collaborate with product and security partners to build maintainable capabilities

Seniority

Senior, hands-on IC

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