Senior Frontend Engineer
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 1d ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 21d ago
The date the source published, not the day we noticed it (2026-08-25). Last seen at its source 4h ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
Poland
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay PLN 340k–368k/yr
Middle 50% of 13 listings that do state pay — Engineering · Senior · Poland · PLN/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
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ashby employer's own board first seen 12d ago · last seen 4h ago
The listing
Our mission is to enable everyone to build wealth
We reinvent how trading and investing work by creating exceptional products people love.
That takes high standards, high velocity and engineers who own what they ship.
Today, we serve over 6 million clients, with more than €38 billion in assets under management. At that scale, frontend performance, correctness and clarity are part of the product.
Our frontend platform spans web and mobile: TypeScript, React, React Native and React Native Web in an Nx and pnpm monorepo, with TanStack Query, Zustand, Playwright, Detox and Jest. Around 95% of our code is reused across web and mobile.
About the role
Senior Frontend Engineers work across our product domains. Your team match will reflect your strengths, interests and where you can contribute most.
Across every team, the model is the same: small, autonomous groups, a weekly release cycle and ownership from problem definition through production.
What you’ll do
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 rather than suppressing type errors.
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.
What you need to have
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.
Sound testing judgement across unit, end-to-end and visual-regression coverage.
Clear, structured problem-solving and the ability to explain technical decisions and trade-offs.
Strong engineering fundamentals, product judgement and confidence learning unfamiliar technologies.
Depth in one frontend ecosystem and sound tool choice matter more than familiarity with every technology listed.
What to expect
Recruiter conversation
Code Review
Experience Deep Dive
Managerial interview
Your recruiter will explain each stage clearly and follow up after every conversation.
Bring your ambition to Europe’s fastest-growing mobile broker!