FullStack Engineer (TypeScript, React, and Next.js)

GFT Technologies SE; Kraków; Híbrido; PLN 122.000 - 195.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work in Kraków office

Medical, sport, lunch subsidy

Online trainings and certifications

Descripción de la vacante

GFT Technologies SE in Kraków is seeking a FullStack Engineer specializing in TypeScript, React, and Next.js to design and deliver responsive user interfaces. You will work across frontend and backend layers, collaborating with product, UX, backend, and data teams to refine journeys and write robust code.

The role emphasizes secure development, test coverage, and production readiness, with a hybrid work setup at the Kraków office.

Formación

• Proficiency in TypeScript, React and Next.js.
• Experience with Java and Spring Boot architectures.
• Knowledge of REST APIs and data contracts.
• Strong understanding of frontend architecture and state management.

Responsabilidades

• Design, build, and maintain TypeScript/React interfaces that are responsive and accessible.
• Deliver features across frontend and backend integration layers.
• Collaborate with product, UX, backend, and data teams to refine user journeys and acceptance criteria.
• Build secure, maintainable frontend solutions with reusable components and robust state management.
• Integrate frontend with Java/Spring Boot services and APIs.

Conocimientos

TypeScript

React

Next.js

Java

Spring Boot

REST APIs

UI architecture

Herramientas

Axios

React Query

Redux Toolkit

TanStack Query

JUnit 5

OpenTelemetry

Descripción del empleo

FullStack Engineer (TypeScript, React, and Next.js)

Location: Kraków, PL, 30-302

Working place: Hybrid

Type of contract: Employment contract

Salary range: 10900 - 17500 PLN gross

What will you do?

• Design, build, and maintain TypeScript and Next.js user interfaces that are responsive, accessible, and aligned with business needs
• Deliver end-to-end product features across frontend and backend integration layers
• Collaborate with product, UX, backend, and data teams to refine user journeys, data contracts, and acceptance criteria
• Build secure and maintainable frontend solutions using reusable components and well-structured state management
• Integrate frontend applications with Java 21 and Spring Boot services
• Diagnose and resolve UI defects, API integration issues, performance bottlenecks, and production issues
• Develop and maintain unit, integration, and regression tests
• Support application quality through observability, logging, performance tuning, and production follow-up
• Maintain high engineering standards for code quality, code reviews, secure development, and deployment readiness
• Strong experience with TypeScript, React, and Next.js
• Good understanding of modern frontend architecture, component design, state management, routing, API integration, and accessible UI patterns
• Working knowledge of Java and modern Spring Boot application patterns
• Experience with REST APIs, DTOs, authentication flows, and integration contracts
• Ability to write clean and maintainable code and participate in technical design and code reviews
• Understanding of secure frontend and backend practices, including token handling, role-based access, and safe data handling
• Strong problem-solving skills and experience investigating production issues across UI and API layers
• Good communication and collaboration skills

Nice to have

• React Query, Redux Toolkit, TanStack Query, or similar state management and data-fetching solutions
• Axios, forms, validation, and component libraries
• Spring Web, Spring Security, or Spring Data JPA
• OpenTelemetry, Micrometer, structured logging, or production monitoring tools
• Cloud-native or containerised delivery environments
• JUnit 5, Vitest, Playwright, or equivalent testing frameworks

We offer

• Hybrid work in our client's office (Kraków) 6 days a month
• Working in a highly experienced and dedicated team
• Benefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.)
• Online training and certifications
• Access to e-learning platform
• Social events

We are GFT Poland. WE KNOW how to tackle complex issues with innovative approach to deliver the highest value. Our reputation has been built around one simple rule: we do not overpromise, WE DELIVER. We deliver to our employees, clients and partners. WE GROW as you grow, so investing in you is our business strategy. Caring for each other is our priority. WE CARE who you are, what you need, how you feel. WE CARE to smile, have fun and develop as human beings.

Why Choose GFT?

• A culture of top performance
• Deep tech IT engineering & consulting
• 1200 skilled & top-class experts
• 77% of the team are regular/senior
• Products that contribute to a sustainable world
• Competitive salary and benefits
• Ambitious projects, trainings and tools you need to flourish
• Google Cloud Partner of the Year - for going above and beyond for customers