Senior Frontend Developer

Your Responsibilities

• Own features end-to-end: Design, build and ship full-featured client-side applications with React and Joy UI — responsive, polished interfaces backed by a mix of GraphQL and REST APIs. You carry your work from idea to production.
• State management for interactive data applications: Tackle complex state-management challenges in a modern, data-intensive environment. Design scalable solutions that keep the client application efficient, responsive and maintainable, even under heavy data loads.
• Client-side data processing & visualization: Implement and optimize advanced client-side data processing directly in the browser. Leverage WebAssembly to accelerate computationally intensive tasks, and build rich, interactive visualizations that turn raw data into intuitive, user-friendly insights.
• AI-powered productivity: Leverage LLM-based code assistants, design generators and test-automation tools to move faster and raise the quality bar — and share your workflows with the team.
• Collaborate across the company: Work shoulder-to-shoulder with design, product and engineering. On a small team, your voice shapes the product directly.

Qualifications

Must have

• Bachelor (or higher) Degree in CS or similar and 3+ years of professional experience
• Good communication skills with fluency in English
• Extensive experience in TypeScript, React, CSS3 and HTML5
• Based in or willing to relocate to Zürich (3 days/week on-site)
• You use AI-assisted development tools effectively while maintaining high engineering standards. We’re continuously investing in our AI development stack to build a compounding engineering advantage that helps our small team compete with much larger companies.
• Proven record of building data-heavy UIs that stay responsive through smart state management and memoisation

Plus

• Experience with web applications involving heavy data processing (e.g. wasm) and visualization (e.g. D3.js, Chart.js, Recharts)
• Technical leadership experience
• Willingness to pick up some Rust for simple backend changes

What We Offer

• Join a small engineering team where every engineer owns meaningful product areas and directly shapes the company’s direction.
• Work on unusually challenging frontend problems spanning WebAssembly, large-scale state management, data visualization and privacy-preserving technologies.
• Help build one of the industry’s most AI-native engineering organizations
• Competitive salary