C

Cloudflare

Secures websites and runs apps on its network

Senior Systems Engineer - MCP Server Portals

Backend EngineeringConfirmed live in the last 24 hours
Full-timeLisbon, Portugal

About the Job

Requirements

  • At least 6 years of experience building and operating production distributed systems, backend services, network services, or infrastructure products.
  • Demonstrated ownership of complex production services or projects, including architecture, implementation, rollout, and operational outcomes.
  • Strong programming skills in TypeScript, JavaScript, Go, Rust, C++, or another language used to build production services.
  • Deep understanding of HTTP, application programming interfaces, proxies, streaming connections, and distributed-systems failure modes.
  • Experience with authentication and authorization technologies such as OAuth 2.0, OpenID Connect, JSON Web Tokens, PKCE, or policy-based access control.
  • Experience designing or operating security-sensitive systems, with sound judgment about identity, authorization, credential handling, concurrency, and state management.
  • Ability to diagnose difficult production issues using logs, metrics, traces, error reporting, and customer-provided evidence, then drive durable fixes.
  • Experience making backward-compatible changes to live systems and managing deployment and migration risks.
  • Clear written and verbal communication skills, including explaining technical tradeoffs, influencing decisions across teams, and mentoring other engineers.
  • Applicants should provide a resume or CV describing relevant engineering, technical leadership, and operational experience.

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 the 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.

Desired Qualifications

  • 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.

About the Company

Cloudflare

Secures websites and runs apps on its network

Cloudflare operates a network that protects websites, delivers online content and runs applications closer to their users. Businesses connect websites and internal systems to its services to filter malicious traffic, control access and improve performance, with security and computing running on shared infrastructure. Developers combine application code, object storage and databases with the network used for content delivery and traffic protection. Cloudflare earns revenue from subscriptions and usage charges, with free plans for basic features and negotiated contracts for larger organizations. Cloudflare was founded in 2009 and is headquartered in San Francisco, California.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2009

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