Senior Frontend Consultant (React / TypeScript)

We are looking for an experienced Senior Frontend Developer to join an international project and have a real impact on the development of a modern web application. If you value high-quality code, well-designed user interfaces, and working in a structured, spec-driven approach, this role is a great fit.

As a Senior Frontend Consultant, you will develop a modern web application used by business clients for working with data and risk analysis.

Key responsibilities Building and maintaining user interfaces (forms, tables, list and detail views) Deg clear and efficient screens that perform smoothly even with large datasets Integrating with the authentication system (Okta) and ensuring secure user Ensuring application stability in the cloud environment Writing automated frontend tests to maintain high quality Working in a Spec-Driven Development (SpecKit) approach - co-creating specifications and implementing features based on them

Ideal candidate profile Strong knowledge of React and TypeScript Experience with Vite Practical knowledge of: React Router, TanStack (Query, Table, Virtual), Formik + Yup Experience with authentication systems (e.g., Okta) Testing experience with: Playwright, Vitest, React Testing Library Working with: GitHub, Terraform, NPM, AWS (CloudFront) in a CI/CD environment Knowledge of English at least B2 level

Conditions Location: 100% remote (Poland) Duration: 3 months Contract type: B2B Rate: 140-160 PLN net / h Start: ASAP

Recruitment steps Phone call with a Recruiter (20-30 min.) Technical interview with the client (2 rounds) Feedback and final decision

W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich.

At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.