Software Engineer

Description

At the company, we are on a mission to help build a better Internet. The company protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by the company 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. The company was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

At the company, 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 Department

Emerging Technologies & Incubation (ETI) is where new and bold products are built and released within the company. Rather than being constrained by the structures which make the company a hugely successful business, we are able to leverage them to deliver entirely new tools and products to our customers. The company’s edge and network make it possible to solve problems at massive scale and efficiency which would be impossible for almost any other organization.

We build the products that enable the next era of the Internet: making domains Readable , Discoverable , and Callable for autonomous AI agents.

Here at the company, agentic discovery is a core part of our vision for the Agentic Internet . As AI agents change how humans and machines find, evaluate, and act on information, businesses need tools to control how they are represented and reached. We build capabilities that enable website owners to prepare their sites for agent interaction, test and observe how agents read their content, establish open interaction standards (like WebMCP and MCP), and create entirely new channels to reach agentic audiences.

We are a cross functional group that communicates and collaborates regularly. We celebrate our achievements, support each other when we make mistakes, and hold each other and our work to a high standard.

About the Role

We are looking for a Software Engineer to join our Agentic Discovery team to build the core systems, protocols, and customer-facing tools powering agent-web interactions.

In this role, you will design and ship scalable software across edge infrastructure, data pipelines, protocol layers, and developer tooling. You will work on cutting-edge standards like WebMCP, MCP, AEO, and agent-native controls that enable content owners to manage how autonomous AI agents find, parse, and safely execute tasks on their digital properties.

Responsibilities

• Design and ship production-ready services that enable customers to evaluate, test, observe, and measure how AI agents read, represent, and interact with their websites and applications.
• Build and maintain support for emerging agent protocols and integrations (MCP, MCP Apps, UCP, MPP, WebMCP).
• Implement fine-grained content controls (access management, licensing, auditing) and agent-native audience/business models (attribution, monetization, and analytics).
• Write clean, secure, well-tested code, advocate for end-user privacy, and help maintain high system reliability, performance, and documentation.
• Partner with software engineers, researchers, product managers, design engineers, and cross-the company stakeholders to take capabilities from concept to production.
• Desirable Skills, Knowledge, and Experience
• Strong software engineering and distributed systems fundamentals.
• Experience building and operating reliable, high-throughput production services.
• Solid understanding of HTTP, APIs, proxies, caching, web security, and web performance.
• Hands-on experience or deep interest in AI agents, tool calling, Model Context Protocol (MCP), or agent harnesses.
• Ability to rapidly prototype, evaluate architectural trade-offs, and ship solutions in a fast-moving, emerging technical domain.
• Strong written and verbal communication skills.
• Bonus Points
• Fluency in Rust (with a big plus for experience in async Rust) or TypeScript/JavaScript edge runtimes (e.g., the company Workers).
• Hands-on experience with search, Answer Engine Optimization (AEO), web crawling, or RAG platform engineering.
• Open-source contributions to agent frameworks, protocols, web standards, browser engines, or distributed systems projects.
• Past experience contributing to a major web framework, proxy, CDN infrastructure, or bare-metal backend cloud provider.
• Proven track record of debugging and resolving network-level and application-level performance bottlenecks.
• Understanding of cryptographic concepts (public-key encryption, digital signatures, hash functions) or privacy-preserving web protocols.

Conditions

● For Portugal based hires: Estimated annual salary is between €54,000 - €75,000.

The final offer will be inclusive of time exemption, in alignment with the applicable law and collective bargaining agreements.

Equity

This role is eligible to participate in the company’s equity plan.

What Makes the company Special?

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Athenian Project : In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.

1.1.1 : We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service the company has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you’d like to be a part of? We’d love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the the company Offices or the company Hubs. More details about this will be available at that stage of the interview process.

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.