Senior Product Engineer, Frontend

Responsibilities

• Own complex product features end-to-end — from understanding the problem and shaping the solution through implementation, launch, and iteration.
• Work closely with the product team to shape what we build, challenge assumptions, and turn ambiguous problems into great product experiences.
• Build polished, responsive product experiences using React and TypeScript.
• Prototype and iterate on interactions quickly, using code, design tools, and AI to find the right solution.
• Obsess over the details that make interfaces feel great: interaction, motion, responsiveness, loading states, transitions, and microinteractions.
• Build and evolve reusable frontend components and our design system, improving consistency without sacrificing flexibility.
• Proactively identify places where the existing product experience can be improved — and take ownership of improving them.
• Maintain a high bar for performance, accessibility, reliability, and frontend engineering quality.

Requirements

• 5+ years of experience building high-quality, customer-facing web products.
• Excellent knowledge of React, TypeScript, modern CSS, and browser technologies.
• A track record of owning and shipping complex product features end-to-end, rather than working only on isolated components or implementation tasks.
• Strong product and UX judgment — you can recognize when an interaction doesn't feel right and propose a better solution.
• Exceptional attention to detail and a desire to build interfaces that feel polished, responsive, and intentional.
• Experience building sophisticated animations and interactive UI.
• Strong understanding of modern frontend engineering practices and the judgment to know when and how to apply them.
• Comfortable taking an ambiguous product problem and turning it into a concrete solution.
• Strong ownership mindset — you take responsibility for outcomes, not just tasks.
• Strong desire to actively contribute to product evolution, not just implementation.
• Comfortable operating in a fast-paced startup environment and working on multiple problems in parallel.
• Clear and proactive communication in a distributed team.
• Excellent knowledge of React and TypeScript.
• Strong command of HTML, CSS, browser APIs, and modern frontend architecture.
• Experience building responsive, high-performance web applications.
• Experience with animation and interaction libraries and building complex UI transitions.
• Experience building reusable component systems and frontend abstractions.
• Strong understanding of frontend performance, accessibility, and cross-browser behavior.
• AI-native workflow is your default for product exploration, implementation, debugging, and iteration.
• Nice to have:

- Experience building or evolving design systems and component libraries. - Strong Figma skills and the ability to explore interaction ideas independently before implementation. - Experience building highly interactive consumer applications where performance and perceived performance matter. - Experience with Browser Extension development. - Hands-on Web3 experience: wallets, dApps, blockchain interactions, or DeFi. - Prior experience in a startup environment that emphasizes trust and autonomy. - Located in time zones close to Europe for smoother collaboration. - Curiosity and willingness to challenge existing solutions when better ones exist.