Senior Frontend Engineer

120 - 150 PLN/ godz./ godz.B2BB2B (netto)

SeniorHybryda·KrakówInne·B2B

#476512·Dodano wczoraj·1

Źródło: justjoin.it

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Tech Stack / Keywords

TypeScriptAngular or React or VueCore Web VitalsREST GraphQL OAuth2OIDCAI

Podsumowanie oferty

As a Senior Frontend Engineer, you will build and evolve microfrontend architectures for applications supporting digital payment services. The work includes frontend performance, integrations with REST and GraphQL APIs, and secure payment interfaces.

Wymagania

Minimum 5 years of commercial experience developing modern frontend applications.
Strong hands-on experience with TypeScript and at least one of React, Vue, or Angular.
Practical experience designing and implementing microfrontend architectures.
Experience developing, maintaining, and executing automated end-to-end tests using Playwright or similar testing frameworks.
Solid understanding of frontend performance optimisation, including Core Web Vitals, application profiling, and bundle analysis.
Proven experience integrating frontend applications with REST and GraphQL APIs.
Familiarity with authentication and authorisation mechanisms, including OAuth2, OIDC, and JWT, as well as feature flags and progressive delivery practices.
Regular use of AI-assisted development tools such as GitHub Copilot, ChatGPT, or Claude, or equivalent solutions.
Very good English and Polish.

Nice to have:

Previous experience developing products or applications in the payments, FinTech, or e-commerce sectors.
Understanding of PCI DSS, Content Security Policy (CSP) configuration, and secure browser-based application architectures.
Knowledge of web accessibility guidelines, particularly WCAG.
Additional backend development experience with Node.js, Java, Python, or C#.
Experience designing or developing embeddable frontend widgets or Software Development Kits (SDKs).

Obowiązki

Design, develop, and evolve microfrontend architectures for applications supporting digital payment services.
Analyse and improve frontend performance, focusing on Core Web Vitals and customer-facing application responsiveness.
Participate in the software development lifecycle, including requirements analysis, technical specification, implementation, testing, and production releases.
Develop and maintain frontend integrations with backend systems through REST and GraphQL APIs.
Implement interactive, real-time application features using Server-Sent Events (SSE) and comparable technologies.
Build secure, reliable, and user-friendly interfaces for payment-related processes in accordance with relevant industry standards and security practices.
Enhance frontend development tools, improve developer experience, and contribute to engineering workflows.

Benefity

Private medical care.
Sports card.
Training courses.
Opportunity to attend conferences, including as a speaker.
Support with publishing in recognised magazines and online.

Opieka zdrowotna

Karta sportowa

Inne informacje

The recruitment process consists of a remote initial interview, a remote technical talk, and a decision about working together.

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