Fullstack Developer - Java + javascript

120 - 125 PLN/ godz./ godz.

MidHybrydaFull-time

#446848·Dodano miesiąc temu·6

Źródło: LinkGroup

Tech Stack / Keywords

LinkGroup is the employer for this position.

Strong experience building user-facing web applications with TypeScript, React, and Next.js.
Good understanding of modern frontend architecture, including component design, state management, routing, API integration, and accessible UI patterns.
Experience building or supporting full-stack features across browser and service boundaries.
Working knowledge of Java and modern Spring Boot application patterns.
Comfortable working with REST APIs, DTOs, authentication flows, and integration contracts.
Ability to write clean, maintainable code and participate in technical design and code review.
Understanding of secure frontend and service practices, including token handling and role-based access.
Strong problem-solving skills and ability to investigate production issues across UI and API layers.
Good collaboration and communication skills for both technical and non-technical stakeholders.

Nice to have:

Experience with React Query, Redux Toolkit, TanStack Query or similar client-state and data-fetching patterns.
Experience with Axios, forms, validation, and component libraries.
Knowledge of Spring Web, Spring Security, or Spring Data JPA.
Experience with PostgreSQL, database design, or migration patterns.
Familiarity with OpenTelemetry, Micrometer, structured logging, or production monitoring tools.
Experience in cloud-native or containerised delivery environments.
Exposure to test automation using JUnit 5, Vitest, Playwright, or equivalent frameworks.

Design, build, and maintain typed TypeScript and Next.js user interfaces that are responsive, accessible, and aligned to business needs.
Work across the stack to deliver end-to-end product features, from browser interactions and state management to backend API consumption and integration behaviour.
Collaborate with product, UX, backend, and data teams to refine user journeys, data contracts, and acceptance criteria.
Build and maintain secure, well-structured frontend code with clear separation of concerns, reusable components, and maintainable state patterns.
Integrate with Java 21 Spring Boot services, understand service APIs, and help validate contract and data-shape changes.
Diagnose and resolve issues across the stack, including UI defects, API integration problems, performance bottlenecks, and production reliability issues.
Contribute to testing across frontend and service boundaries, including unit tests, integration tests, and regression checks.
Support service quality through observability, logging, performance tuning, and production follow-up.
Help maintain engineering standards for code quality, reviews, secure coding, and deployment readiness.

Link Group

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