Member of Design Staff - Product Designer
TesslAI-native Software company
London, United KingdomMid
Index Ventures
Accel
GV
boldstart
Design
About the role
TL;DR
Shape the future of AI-native software development design at Tessl.
- •Tessl is building the foundational infrastructure for how developers work with AI agents.
- •As an early member of the team, you'll help shape how developers interact with technically complex systems and workflows.
- •Key Responsibilities Design clear, usable interfaces across core product surfaces and developer workflows.
- •Translate nuanced system concepts into experiences that feel considered rather than overwhelming.
- •Run user research with developers and engineers, turning genuine observations into well-reasoned, specific design decisions.
- •Collaborate daily with product managers and engineers throughout the full cycle of work.
- •Contribute to a growing design system, bringing visual rigour and coherence to shared foundations.
- •Develop an AI-native design process: use current tools across research, prototyping, and visual production.
- •Requirements 3 to 5 years of experience in product design with a portfolio showing end-to-end ownership of real, shipped work.
- •Technical fluency in designing for technically sophisticated users.
- •Strong proficiency in Figma, including component architecture and design system contribution.
- •Comfort using AI tools as a serious part of your workflow.
- •Prior experience in developer tools, productivity software, or AI/ML applications.
Required skills
Product DesignUI DesignUX DesignFigma
Nice-to-have skills
Design SystemsDesign Research
Domain expertise
developer-tools
Tech stack
Figma