(Senior) React Engineer - Webstack (all genders)
About You SE & Co. KG9 hours ago
Hamburg, GermanySenior
Responsibilities
- Build and maintain responsive web shop features for desktop, mobile web, and tablet using React and TypeScript.
- Own frontend features from concept through deployment and collaborate with product, UX, QA, and security teams.
- Optimize frontend performance, including p99 behavior and Core Web Vitals, and ensure accessible user experiences.
- Integrate REST APIs and manage application state using appropriate frontend state-management tools.
- Develop and maintain frontend tests, tooling, abstractions, frameworks, deployment dashboards, and automated features.
- Improve monitoring and alerting for deployments and campaigns, including bot detection and alert severity management.
- Investigate non-standard technical problems, create proofs of concept, conduct research, and carry out refactorings.
- Participate in code reviews and use AI-assisted development tools while critically reviewing their output.
Requirements
- At least five years of frontend development experience.
- Strong TypeScript, JavaScript, and React experience, including hooks, context, and the React ecosystem.
- Solid HTML and modern CSS knowledge, including CSS-in-JS and responsive design.
- Understanding of web performance, Core Web Vitals, and accessibility.
- Experience integrating REST APIs and managing state with tools such as Redux, Zustand, or React Query.
- Experience with frontend testing tools such as Jest and React Testing Library.
- Experience with modern tooling such as Vite, npm, and yarn, plus Git.
- Curiosity about AI-assisted development using tools such as Claude or Cursor and the judgment to review generated output critically.
- Demonstrated ownership, problem-solving ability, and willingness to handle non-standard problems through production.
- Experience with server-side rendering and Node.js is a plus.
- Large-scale e-commerce experience and experience with a design system or component library are a plus.
- End-to-end testing experience with tools such as Cypress is a plus.
- Interest in monitoring, observability, or web security is a plus.
Benefits
- Inclusive workplace focused on acceptance, inclusion, and diverse perspectives.
- Flat hierarchies, direct communication, pragmatic decisions, ownership, and trust.
- Team lunches, afterwork drinks, company events, and informal social opportunities.
- Apply online through the company career page; the role is associated with ABOUT YOU’s Hamburg and Berlin locations.
Tech Stack
Categories
About About You SE & Co. KG
ABOUT YOU SE & Co. KG operates an online fashion marketplace for European consumers and licenses commerce technology to brands via its SCAYLE platform. The group sells apparel and lifestyle products through its mobile app and aboutyou.com, and offers a cloud-based enterprise shop system under a license model to retailers. Founded in 2014 and headquartered in Hamburg, it is a publicly listed company.