Staff Frontend Engineer: Architecture & Platform Leadership

Trading 212; Poland; On-site; PLN 240,000 - 360,000; Full time

Job summary

Trading 212 is seeking Staff Frontend Engineers to shape architecture across React and React Native platforms within our web and mobile ecosystem. You’ll own platform capabilities, shared libraries and tooling while staying hands-on to drive clarity and execution.

This role emphasizes technical judgment, durable fixes and mentoring senior engineers without people management responsibilities. You’ll collaborate with product, backend engineering and QA to balance standardisation with team autonomy

Qualifications

• Evidence of architectural or platform impact across multiple frontend teams.
• Deep ownership of complex production systems built with React or React Native and TypeScript.
• Strong judgement in application boundaries, shared libraries, state management, performance and migration design.
• A track record of improving developer effectiveness, reliability or product quality through durable mechanisms.
• Practical experience diagnosing performance and correctness problems across web or mobile systems.

Responsibilities

• Set direction for frontend architecture across React, React Native and the shared monorepo.
• Own cross-team problems in platform capabilities, shared libraries, design-system foundations, tooling and developer experience.
• Lead decisions on boundaries, abstractions, state and data flow, performance, testing and migration strategy.
• Diagnose systemic rendering, bundle, runtime and release-quality problems and create durable fixes.
• Remain hands-on where implementation, prototyping or technical investigation is the fastest way to create clarity.
• Partner with product, backend engineering and QA on risks and decisions that cross team boundaries.
• Mentor senior engineers, raise review quality and make sound frontend judgement easier to reproduce across teams.
• Balance standardisation with team autonomy, avoiding platform work that creates more friction than leverage.

Skills

Frontend architecture

React/React Native

TypeScript

Performance optimization

System design

Mentoring

Cross-team collaboration

Communication

Tools

React

TypeScript

Job description

Trading 212 is seeking Staff Frontend Engineers to shape architecture across React and React Native platforms within our web and mobile ecosystem. You’ll own platform capabilities, shared libraries and tooling while staying hands-on to drive clarity and execution.

This role emphasizes technical judgment, durable fixes and mentoring senior engineers without people management responsibilities. You’ll collaborate with product, backend engineering and QA to balance standardisation with team autonomy