Senior Full Stack Engineer – Frontend Focus

, we are building the world’s first platform to create full-stack, on-chain applications through natural language. Our mission is to make building software as simple as a conversation — transforming ideas into live applications instantly. We are a cross-functional team of engineers and researchers building the AI that powers this new paradigm. To do this, we need world-class product engineers who can design beautiful, reliable, and performant experiences across the stack.

As a Front-End Engineer , you will build the interfaces through which users create and interact with AI-generated applications. You’ll craft intuitive, fast, and responsive user experiences in React and Type Script, while diving into our Node.js services when needed. This is a hands-on, full-stack role with a front-end emphasis — ideal for engineers who thrive on ownership, move fast, and care deeply about user experience and product quality.

• Build Intuitive Interfaces: Develop and refine the core Caffeine.ai front-end experience using React, Type Script, and modern tooling. You’ll bring design concepts to life and create seamless interactions that make software creation feel like magic.
• Collaborate Across the Stack: Work closely with backend engineers to integrate APIs, improve performance, and ensure reliability from UI to infrastructure. You’ll contribute to Node.js / Type Script codebases and influence architectural decisions.
• Own Features End-to-End: Drive features from concept through deployment. You’ll partner with product, design, and AI teams to prototype, iterate, and ship quickly while maintaining high standards of quality and stability.
• Champion Performance and Quality: Optimize rendering, handle complex state management, and ensure responsiveness even in data-intensive scenarios. You’ll define and monitor front-end performance metrics and lead efforts to continuously improve them.
• Instrument, Test, and Learn: Implement A/B tests, telemetry, and analytics to understand user behavior and validate design decisions. You’ll build with measurement in mind — using tools like Datadog, feature flags, and internal frameworks.
• Shape the Product
  
  Experience:
  
  Bring creativity and technical insight into design reviews, product discussions, and roadmap planning. You’ll help define what “AI-native” user experiences look like.

• You have 7+ years of experience building production web applications.
• You are proficient in React, Type Script, and modern front-end ecosystems
  .
• You are comfortable working across the stack, especially with Node.js and Type Script APIs
  .
• You have a strong sense for product design, UX, and performance
  .
• You thrive in fast-moving, high-ownership environments
  .
• You care about code quality
  , but you also ship — balancing pragmatism with excellence.
• You’re curious about AI-driven development and decentralized web technologies
  .

• Experience with SSR
  , OpenAPI
  , and serverless architectures
  .
• Familiarity with A/B testing frameworks
  , feature flags
  , and analytics instrumentation
  .
• Experience contributing to small, cross-functional teams or startups.

* This is a hybrid role based in our Zurich office, with a requirement of 3+ days in the office per week.