--- title: 'Developer Advocate at Tessl' canonical: 'https://feeny.ai/job/developer-advocate-tessl-london-7hns6mz5feep' type: 'job' last_seen: '2026-09-05' --- # Developer Advocate at Tessl - **Company:** Tessl - **Location:** London, United Kingdom - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-09-03 - **Last confirmed live:** 2026-09-05 - **Apply:** https://jobs.ashbyhq.com/tesslcareers/7fd02ddb-d2e7-4422-be79-64d5c35acbe0 ## Job description Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny, who previously founded Snyk. We’ve raised more than $100 million from world-class investors, including Index Ventures, Accel, GV and Boldstart. In 2025, Tessl ranked #2 in Sifted’s B2B SaaS Rising 100 and #20 in its AI 100. We’re 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 and scale a company operating at the forefront of AI and software development. ## OVERVIEW OF ROLE We're looking for a Developer Advocate to be Tessl's voice in the AI developer community — based in our London office and out in the world where developers actually are. Someone who lives and breathes agentic coding, builds real things with Tessl, and helps other developers do the same. This is a hands-on, high-visibility role. You'll build with the product, create content people genuinely use, speak at events, and be a familiar face across the communities where AI development is being figured out in real time. You'd rather ship a slick integration or a creative app than just write about one. A big part of this role is education. Alongside the community work, you'll help build and grow Tessl Academy — our home for learning AI native development. You'll turn what you know into structured, hands-on learning that scales beyond any single talk or tutorial, and takes developers from curious to genuinely capable 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. Teach through Tessl Academy: Design and deliver structured learning, including courses, hands-on labs, guided projects, and certification paths, through Tessl Academy that take developers from their first agentic build to real fluency. Own the curriculum, keep it current as the product evolves, and pay attention to what actually helps people learn, not just what looks good on a syllabus. 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. ## 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. A teacher's instinct: You can break a complex AI topic into clear, progressive steps that meet developers where they are, and you enjoy the craft of helping someone go from lost to confident. 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. ## NICE TO HAVE - Experience building developer education, including courses, curriculum, academies, bootcamps, or technical training - Experience with open-source communities and contributor ecosystems 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 https://www.tessl.io/blog/announcing-tessl-the-ai-native-development-startup - Announcing skills on Tessl: the package manager for agent skills https://tessl.io/blog/skills-are-software-and-they-need-a-lifecycle-introducing-skills-on-tessl/ - Podcast Episode: The End of Fragmented Agent Context, Guy Podjarny Tessl CEO https://youtu.be/ntkM-hRblfo ## About Tessl ## Company Overview - **One-liner**: Tessl provides a security, visibility, and governance platform for AI agent skills, enabling enterprise teams to manage, secure, and continuously improve skills across agents like Claude Code, Cursor, and Copilot. - **Entity Type**: Private (Series A; total raised $125M) - **Headquarters**: London, United Kingdom (Kings Cross area) - **Founded**: 2024 - **Founders**: Guy Podjarny (Founder & CEO) ## Core Business - **Primary industry**: Developer tools / AI infrastructure / Agent enablement - **Target customers**: Enterprise engineering and platform teams, security leaders; B2B - **Mission or purpose statement**: "Skills are the new code. Treat them that way." – Tessl aims to turn chaotic, invisible skill sprawl into a governed, measurable system that scales agent adoption safely. ## Products & Services - **Tessl Agent Enablement Platform**: The core SaaS platform that integrates with AI coding agents (Claude Code, Cursor, Copilot, Gemini) to publish, version, security-scan, and govern skills. Features include a shared skill registry, policy enforcement, audit logs, eval-driven improvement dashboards, and three-layer visibility (published, project coverage, real activation). ## Market Standing - **Valuation/Market Cap**: Not disclosed (private) - **Key Metric**: Total Funding – $125M (Series A, as of 2024 per CB Insights) - **Notable Investors/Partners**: Index Ventures, GV (Google Ventures), boldstart ventures, Accel - **Growth Signals**: Founded in 2024 by serial entrepreneur Guy Podjarny (ex-Snyk founder, scaled to $8B+ valuation); rapid Series A raise of $100M+; early category leadership in "skill management" for AI agents; active hiring across engineering, product, sales, DevRel, and marketing. ## Competitive Advantages - **Founder-market fit**: Guy Podjarny previously founded Snyk, a multi-billion-dollar developer security category leader, and sold a prior company (Blaze) to Akamai. - **First-mover in a new category**: Tessl defines the "agent enablement" layer that sits between developers and AI agents – a gap no other major tool addresses. - **Depth of governance**: Security scanning, policy gating, audit logs, and eval-driven improvement are baked into the platform, making it enterprise-ready from day one. - **Strong investor syndicate**: Backed by top-tier VC firms with deep developer-tool and infrastructure expertise (Index, GV, Accel, boldstart). ## Strategic Focus - **Current priorities**: Scaling enterprise adoption – proving visibility, governance, and continuous improvement for agent skills; building integrations with all major AI coding agents; expanding the skills registry and community. - **Growth direction**: Opening a San Francisco remote office (DevRel role), growing sales and marketing teams, and deepening platform capabilities in security and compliance. ## Why Work Here - **Culture highlights**: Described as "AI Native" with operating principles like "Grab a Shovel" (get scrappy), "Embrace the Pace," "Build, then Break," and "Own It." The company values in-person collaboration and regularly hosts AI community events at its London HQ. - **Remote/hybrid policy**: Hybrid with anchor days in the office on Monday, Tuesday, and Thursday. Some roles (e.g., DevRel) are remote-friendly (San Francisco, New York). - **Perks**: 25 days holiday, employee stock options, private health insurance, 2 volunteer days, learning & development budget, enhanced parental leave and sick leave, Cycle to Work scheme, commuter stipend for travel outside London. ## Sources 1. [tessl.io](https://tessl.io/) – Product overview and features 2. [tessl.io/careers](https://tessl.io/careers/) – Culture, perks, and open roles 3. [tessl.io/about](https://tessl.io/about/) – Leadership, funding, and investors 4. [cbinsights.com](https://www.cbinsights.com/company/tessl) – Funding history and company data ## Other roles at Tessl - [Member of Marketing Staff - Marketing Producer FTC](https://feeny.ai/job/member-of-marketing-staff-marketing-producer-ftc-tessl-london-eqj0n1y5p0fz) — London, United Kingdom - [Member of Technical Staff - Software Engineer](https://feeny.ai/job/member-of-technical-staff-software-engineer-tessl-london-gg1hn3kbds5x) — London, United Kingdom - [Field Engineer (Presales) - Northeast (Boston/NY)](https://feeny.ai/job/field-engineer-presales-northeast-boston-ny-tessl-new-york-wakg4w6sxy8k) — New York, NY - [Member of Product Staff - Product Manager](https://feeny.ai/job/member-of-product-staff-product-manager-tessl-london-2g1jef0ambwp) — London, United Kingdom - [Member of DevRel Staff - Developer Advocate](https://feeny.ai/job/member-of-devrel-staff-developer-advocate-tessl-new-york-cjgcsjf0aqz6) — New York, NY - [Member of Technical Staff- Research Engineer (Harness Engineering and Agentic Orchestration)](https://feeny.ai/job/member-of-technical-staff-research-engineer-harness-engineering-and-agentic-fxpqcq1fpk7s) — London, United Kingdom - [Member of Marketing Staff - Product Marketing Manager](https://feeny.ai/job/member-of-marketing-staff-product-marketing-manager-tessl-london-5e81chfkh3b6) — London, United Kingdom - [Developer Advocate](https://feeny.ai/job/developer-advocate-synthesia-seattle-y34r2n9r563s) — Seattle, WA - [Developer Advocate](https://feeny.ai/job/developer-advocate-blitzy-cambridge-fgqjr6qvb709) — Cambridge, MA - [Developer Advocate](https://feeny.ai/job/developer-advocate-exa-san-francisco-01brrqrm5cxp) — San Francisco, CA