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Catawiki is a one-of-a-kind marketplace for buying and selling special objects, with over 100,000 unique items auctioned weekly and 25+ million objects sold to date. The company is seeking an experienced Frontend Engineer to join one of its main development verticals: Demand, Supply, or Fulfilment.
In this role, you will build impactful product experiences for buyers, sellers, customer service teams, and internal operations across the Catawiki platform. You'll create adaptable web frontends using TypeScript and ReactJS on top of scalable microservices, working alongside Backend, iOS, and Android Engineers. Your responsibilities include delivering responsive, accessible experiences across desktop, tablet, and mobile; optimizing product performance through measurement and monitoring; and collaborating with QA, UX Designers, and Product Managers on A/B tests and data-driven iterations.
You bring extensive frontend experience with JavaScript or TypeScript as your primary stack and a strong portfolio of frontend deliveries. You have deep proficiency in HTML, CSS, and modern web fundamentals (HTTP/S, Critical Rendering Path, CORS, caching, CDNs). You're familiar with ReactJS, NextJS, Redux, CSS Modules, Tailwind, and/or Rails. You have proven experience in product-driven companies, working autonomously within cross-functional teams and taking ownership of production systems from design through implementation and monitoring. As a Senior Developer, you're effective at lifting your team's level and collaborating with frontend engineers across other teams.
