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Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class investors including Index Ventures, Accel, GV, and Boldstart, and in 2025 we were ranked #2 in Sifted EU’s B2B SaaS Rising 100 and #20 in Sifted's AI 100.
At Tessl, we are building the context layer for AI coding agents, and a platform for AI-native software development. As an early member of the team, you’ll help shape how we build, scale and support a company operating at the edge of AI and software development.
Overview of Role
We're looking for a Developer Advocate who lives and breathes the AI space. Someone already deep in the AI developer ecosystem, building with it, talking about it, and pushing what's possible with it every day.
In this role, you'll be a power user of our product and a builder. That means creating integrations, and tools that showcase what AI native development can really look like. You'll create compelling content, engage deeply with the community, and help developers understand what's possible when they build with Tessl.
Key Responsibilities
Build with Tessl: Go beyond writing about the product, build with it. Create apps, integrations, and creative projects using Tessl that inspire and enable the developer community to do the same. Content Creation: Write articles, tutorials, and guides, and produce videos that give developers practical, actionable insights into AI native development with Tessl. Community and Events: Be an active, visible presence in the AI developer community, speaking at events, participating in forums, engaging on social, and helping highlight what developers are building with Tessl. Ecosystem Exploration: Constantly explore the AI developer tooling landscape, identifying integration opportunities and ways to connect Tessl with the broader ecosystem. Show Up Where Developers Are: Run webinars, appear on podcasts, and make yourself at home in other people's communities. That means Discord servers, Slack groups, subreddits, newsletters, and anywhere else developers are gathering.
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What You'll Need
Already in the conversation: You're an active voice in the AI developer community, on social channels, where AI discussion is happening. You post, reply, spark discussions. Active at events: You speak at meetups or conferences, engage in developer communities, and have a point of view worth hearing. A builder's mindset: You get excited about making things. Whether that's a slick integration, a creative app, or an experiment that no one's tried yet, you'd rather ship something than just describe it. Strong communicator: You can write clearly and engagingly about technical AI topics. Development skills: You're comfortable enough with code to build and hack on things yourself. You don't need to be a full-time engineer, but you ship.
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Nice to Have
Experience with open-source communities and contributor ecosystems Existing network in the AI developer tooling space Comfort operating in a fast-moving, early-stage startup environment
Salary And Benefits
We offer a competitive salary commensurate with experience and skills. We provide health insurance which extends to partners and dependents, as well as a pension.
Our office is based a couple of minutes away from King’s Cross station. It’s also pet friendly, and we make sure to have regular socials such as team lunches, drinks and more.
Application Process
Here’s an outline of what you can expect during our interview process:
A 30 min prescreen interview with our talent Team A technical interview and role deep dive with Head of Developer Relations, Simon Maple A take home technical and content creation test, exploring an AI software. An on-site session with a Tessl leader.
We care deeply about the warm, inclusive environment we’re building at Tessl and we value diversity – we welcome applications from those typically underrepresented in tech. If you like the sound of this role but are not totally sure whether you’re the right person, do apply anyway!
Learn how we think and work
On Tessl, The AI Native Development Startup Announcing skills on Tessl: the package manager for agent skills Podcast Episode: The End of Fragmented Agent Context, Guy Podjarny Tessl CEO
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