Senior Software Engineer, Agentic Discovery
In-Office · Lisbon · London · EUR 66,000-91,000 / year · Posted Sep 29, 2026
At a glance
- Location
- In-Office · Lisbon · London
- Salary
- EUR 66,000-91,000 / year
About Cloudflare
- At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.
- At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.
- Available Locations: Lisbon, or London (Hybrid)
About the role
- Emerging Technologies & Incubation (ETI) is where new and bold products are built and released within Cloudflare.
- We are looking for a Senior Software Engineer to serve as a technical anchor and subject matter expert on our Agentic Discovery team.
- In this role, you will define the architecture, core protocols, and multi-team standards powering the next generation of agent-web interactions.
Responsibilities
- Architect and Ship Core Systems: Build high-throughput, resilient production services that make web properties Readable (structured content transformation), Discoverable (indexing and AEO), and Callable (WebMCP, tool-calling APIs, Generative UI) for autonomous agents.
- Define Emerging Agent Protocols: Lead integrations and protocol standards (MCP, MCP Apps, UCP, MPP, WebMCP). Author architectural specifications and technical designs that guide engineering work within and outside the ETI team.
- Product & Stakeholder Collaboration: Partner directly with Product Management, customers, and key stakeholders to translate customer needs into technical requirements, clarify KPIs, and shape engineering roadmaps.
- System Health & Observability: Drive continuous improvements in system health. Lead complex incident responses, conduct thorough post-incident retrospectives, and rearchitect systems to eliminate recurring failure modes and minimize customer escalations.
- Engineering Leadership & Governance: Elevate engineering standards across Cloudflare through technical mentorship, code reviews, architectural governance, and candidate evaluation for engineering hiring.
Requirements
- Distributed Systems & Architecture: Demonstrated experience designing scalable system architecture and setting performance metrics in a distributed, high-scale environment.
- Technical Leadership & Specification: Track record of writing clear, comprehensive technical specifications and leading cross-functional engineering initiatives to completion.
- Web & Network Fundamentals: Deep understanding of HTTP, APIs, proxies, caching, web security, and performance bottlenecks spanning multi-service architectures.
- AI & Agent Ecosystems: Hands-on experience and a deep conceptual understanding of AI agents, tool calling, Model Context Protocol (MCP), or agent harnesses.
- Ambiguity & Iterative Delivery: Proven ability to partner with product managers and customers to navigate ambiguous problem spaces and iteratively deliver large-scale architecture.
- Mentorship & Operational Excellence: Experience mentoring junior and mid-level engineers, contributing to hiring, and driving improvements to engineering processes and incident response workflows.
Preferred qualifications
- Modern Edge & Runtime Expertise: Fluency in async Rust or TypeScript/JavaScript edge runtimes (e.g., Cloudflare Workers) at scale.
- Open Source & Protocol Contributions: Active contributions to or leadership in open-source agent frameworks, protocols (e.g., MCP), web standards bodies, browser engines, or network proxies.
- Incident Resolution Track Record: Demonstrated experience resolving complex, multi-team production incidents and driving post-mortem recommendations to completion.
- Search, Crawling & RAG: Background in search engines, Answer Engine Optimization (AEO), web crawling at scale, or RAG platform engineering.
- Security & Cryptography: Expertise in cryptographic protocols (public-key encryption, digital signatures) or privacy-preserving web architectures.
Benefits
- Equity plan eligibility
Workplace
- Available Locations: Lisbon, or London (Hybrid)
Skills
- Rust
- TypeScript
- JavaScript
- Cloudflare Workers
- HTTP
- APIs
- Model Context Protocol (MCP)
- WebMCP
