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 roleJoin our engineering team to build real-time AI Native workflows, tooling, and interfaces that will reshape how developers create and maintain software.
As a Software Engineer, you’ll be versatile and independent, excited to work with cutting-edge AI tools to build great products.
We move quickly, but with purpose - balancing speed with collaboration and thoughtful execution.
You’ll collaborate closely with product, design, and the wider Engineering team to bring AI Native development to life in a fast-paced, high-trust environment.
What you’ll doNo two days will be the same at Tessl! You’ll have a high level of autonomy and be able to make decisions based on what you believe will help you deliver the most success.
Here’s an insight into just a few of the things you would be doing:Design and implement new functionality that you discussed and reviewed with the product teamSpin up a proof of concept to showcase an innovative idea you’ve been thinking aboutRapidly prototype a new language integration for our code generation pipeline, then develop a plan for a scalable implementation.
Pair with a designer to fine-tune interactions in the UI, CLI or existing AI coding agents, making the user experience more intuitive and slickIntegrate a third-party service, e.
for notifications, so we can focus our own cycles on Tessl’s core capabilitiesCollaborate with other teams to plan an architecture that supports collabor.