Senior Fullstack Engineer: Java + React | Hybrid

GFT TECHNOLOGIES SE; Kraków; Hybrid; PLN 172,000 - 220,000; Full time

Job summary

GFT Poland in Kraków seeks a Senior Fullstack Consultant (Java + React) to join a hybrid team delivering onboarding platform components for corporate clients. You will develop scalable backend and frontend features, design RESTful APIs, and contribute to performance, security, and reliability initiatives.

You will work in a fast-paced, collaborative environment, bridging Java and React expertise with CI/CD practices, automated testing, and platform improvements while supporting production on

Qualifications

• Must have strong Java 8+ knowledge and React JS experience.
• Experience debugging and extending existing applications.
• Understanding of microservices and REST API design.
• Experience with automated tests and CI/CD pipelines.
• Knowledge of application security practices.

Responsibilities

• Develop and maintain backend services using Java.
• Build modern frontend features using React.
• Extend existing functionalities and fix issues in the codebase.
• Design and implement REST APIs in a microservices architecture.
• Write automated tests to ensure quality and reliability.
• Collaborate in CI/CD processes and deployments.
• Implement security best practices across services and endpoints.
• Improve application performance and production stability.
• Participate in platform and process improvement initiatives.
• Provide production support on a rotational basis.

Skills

Strong Java 8+ knowledge

Good knowledge of React JS

Experience debugging and extending

Understanding of microservices

Ability to design and build REST APIs

Experience writing automated tests

Hands-on with CI/CD tools

Knowledge of application security

Strong problem-solving & analytics

Fast-paced collaborative environment

Database schema design

Hybrid work 2 days/week

Job description

GFT Poland in Kraków seeks a Senior Fullstack Consultant (Java + React) to join a hybrid team delivering onboarding platform components for corporate clients. You will develop scalable backend and frontend features, design RESTful APIs, and contribute to performance, security, and reliability initiatives.

You will work in a fast-paced, collaborative environment, bridging Java and React expertise with CI/CD practices, automated testing, and platform improvements while supporting production on