Senior Frontend Engineer - Web & Mobile, React/TypeScript

Trading 212; España; Presencial; EUR 70.000 - 110.000; Jornada completa

Descripción de la vacante

Trading 212 in Spain is seeking a Senior Frontend Engineer to own complex frontend features end to end across web and mobile, using React and React Native with TypeScript. You will design durable libraries and optimize rendering, state management and performance.

In a fast-moving, autonomous team with weekly releases, you will collaborate with product, backend and QA to translate complex requirements into simple user experiences, review code, and mentor colleagues while maintaining high quality

Formación

• Proven ownership of production frontend systems built with React or React Native and TypeScript.
• Strong knowledge of React rendering, component boundaries, data flow and state management.
• A track record of designing maintainable frontend architecture and reusable abstractions.
• Practical experience diagnosing performance problems in complex web or mobile products.

Responsabilidades

• Own complex frontend features end to end across web and mobile.
• Design and evolve React and React Native systems, shared libraries and durable abstractions.
• Identify and resolve rendering, state-management, bundle and runtime-performance bottlenecks.
• Use TypeScript to make behaviour explicit and prevent defects.
• Work closely with product, backend engineering and QA to turn complex requirements into simple user experiences.
• Keep quality high through code review, unit, end-to-end and visual-regression testing.
• Share knowledge, mentor colleagues and raise the frontend engineering standard.

Conocimientos

React

React Native

TypeScript

Frontend architecture

Performance debugging

Unit testing

E2E testing

Problem solving

Herramientas

TanStack Query

Zustand

Playwright

Detox

Jest

Descripción del empleo

Trading 212 in Spain is seeking a Senior Frontend Engineer to own complex frontend features end to end across web and mobile, using React and React Native with TypeScript. You will design durable libraries and optimize rendering, state management and performance.

In a fast-moving, autonomous team with weekly releases, you will collaborate with product, backend and QA to translate complex requirements into simple user experiences, review code, and mentor colleagues while maintaining high quality