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Decentriq builds the privacy-preserving infrastructure that lets advertisers, retailers and publishers collaborate on first-party data for audience targeting and campaign measurement — without exposing their underlying data. Headquartered in Zürich, we’re trusted by industry leaders such as RTL Ad Alliance, Publicis Media, The New York Times and major Swiss banks. We’re helping define how data collaboration works in a privacy-first world.

Our web application is the primary interface to this platform. Built with React, TypeScript, GraphQL and Joy UI, it lets customers configure secure data jobs, explore results, activate audiences to every major destination and trigger ML workflows with a single click.

This isn’t another CRUD-over-an-API frontend role. You’ll build interfaces that verify cryptographic attestation evidence directly in the browser using Rust and WebAssembly, orchestrate long-running secure computations while keeping the UI responsive, turn differentially private data into interactive visualizations and build on top of our growing 60+ component design system.

We’re looking for an exceptional Senior Frontend Engineer (≥80%, start ASAP) who wants to own these kinds of engineering challenges end-to-end in a hybrid, on-site role in Zürich.

We believe in a small, high-leverage engineering team with end-to-end ownership. You’ll own features from the idea through implementation and production, and leverage AI-assisted development to ship faster while maintaining a high engineering bar. Few engineers. Large product surface. Real ownership. Real impact.

If you’re excited by building technically ambitious frontend software that solves real privacy and data engineering challenges, we’d love to hear from you.

Tasks

• 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.

Requirements

• (Must have) Bachelor (or higher) Degree in CS or similar and 3+ years of professional experience
• (Must have) Good communication skills with fluency in English
• (Must have) Extensive experience in TypeScript, React, CSS3 and HTML5
• (Must have) Based in or willing to relocate to Zürich (3 days/week on-site)
• (Must have) 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.
• (Must have) 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)
• (Plus) Technical leadership experience
• (Plus) Willingness to pick up some Rust for simple backend changes

Benefits

• 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

No need for a formal motivational letter. Just send your CV along with a few bullet points about why you're excited to work with us. We look forward to your application!

Decentriq, the “Switzerland of data”, is a confidential data collaboration platform. By enforcing compliance and control with advanced privacy technologies, it helps enterprises scale data collaborations across organizational boundaries and unlock value from data that would otherwise be too sensitive to use.

Designed for both data scientists and business users, collaborators use Decentriq’s data clean rooms to analyze sensitive data without sharing it. Powered by confidential computing, data remains encrypted throughout its lifecycle and is verifiably never accessible to another party — not to us, and not even to the cloud provider. Combined with smooth collaboration workflows, fully flexible analysis and maximum interoperability with other technologies, Decentriq makes “sharing without sharing” a scalable strategy.

Decentriq powers data collaboration in the world’s most privacy- and compliance-conscious industries, including media, healthcare, banking, and the public sector.