Staff Frontend Architect – React & React Native

Trading 212; Poland; On-site; PLN 260,000 - 380,000; Full time

Job summary

Trading 212 is seeking a Staff Frontend Engineer to shape architecture across React, React Native and the shared monorepo. You’ll own platform capabilities, design-system foundations and developer tooling while staying hands-on when needed.

You’ll mentor senior engineers, collaborate with product and QA, and help reduce friction through durable frontend solutions. This role emphasizes technical judgement and sustained impact over management responsibilities.

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.
• The ability to influence technical direction through evidence, clarity and trusted execution rather than title.
• Clear communication that helps teams act on complex technical decisions.
• Strong engineering and product judgement, including knowing when not to introduce a new abstraction.

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

Monorepo tooling

Design systems

Developer tooling

Tools

Playwright

Detox

Jest

TypeScript

Job description

Trading 212 is seeking a Staff Frontend Engineer to shape architecture across React, React Native and the shared monorepo. You’ll own platform capabilities, design-system foundations and developer tooling while staying hands-on when needed.

You’ll mentor senior engineers, collaborate with product and QA, and help reduce friction through durable frontend solutions. This role emphasizes technical judgement and sustained impact over management responsibilities.