# Senior Fullstack Consultant (Java & React) at GFT Technologies

> Open job at GFT Technologies in Kraków, Poland. Workplace: On-site.

Source: Poland Dev Jobs, https://poland-devjobs.com/jobs/gft-technologies-senior-fullstack-consultant-java-react-dfj6599
Posted 3 November 2026. Last checked on the employer's career site: 4 November 2026.

## Facts

- Company: [GFT Technologies](https://poland-devjobs.com/companies/gft-technologies)
- Location: Kraków, Poland
- Workplace: On-site
- Employment type: Contract
- Salary: zł 125–160 / hour (B2B)
- Polish: Not required
- Skills: Azure, GitLab CI, Grafana, Helm, Java, JavaScript, Kafka, Kubernetes, Microservices, PostgreSQL, React, Redux, Spring, Terraform, TypeScript
- Not mentioned in the job post: visa sponsorship, relocation, where you can apply from

## Job description

**Type of contract:** B2B contract

**Salary range:** 125 - 160 PLN/H

**What will you do?**

You will work on large-scale financial services platforms supporting investment banking operations and digital transformation initiatives in a highly regulated environment. The role combines frontend and backend development, cloud-native engineering, and collaboration with business and technology stakeholders to deliver scalable, resilient, and high-performing solutions.

**Your tasks**

- Design and develop enterprise-grade frontend applications using React and TypeScript
- Build and maintain backend services based on Java, Spring Boot, and microservices architecture
- Develop and support cloud-native solutions deployed on Kubernetes platforms
- Design and implement event-driven integrations using Apache Kafka
- Create and maintain CI/CD pipelines in GitLab
- Collaborate with business stakeholders, architects, and cross-functional Agile teams
- Optimize application performance, scalability, and reliability
- Contribute to technical design, code reviews, and engineering best practices
- Support application modernization and process automation initiatives

**Requirements**

- 7+ years of professional software development experience in enterprise environments
- Strong expertise in ReactJS, Redux, TypeScript, HTML5, CSS3, and modern JavaScript
- Deep understanding of React Hooks, Context API, Redux Toolkit, routing, and frontend performance optimization
- Hands-on experience with Vite and/or Webpack
- Strong experience with Java 17+ and Spring Boot 3+
- Experience with Spring Security, Spring Data JPA, REST APIs, and microservices
- Excellent knowledge of multithreading, concurrency, JVM tuning, and performance optimization
- Practical experience with Apache Kafka and event-driven architectures
- Experience with Kubernetes, Helm, and Terraform
- Experience creating and maintaining GitLab CI/CD pipelines
- Strong understanding of distributed systems, scalability, resiliency, and fault tolerance
- Knowledge of SOLID principles, design patterns, clean architecture, TDD, and secure coding practices
- Strong communication and collaboration skills
- Experience working in Agile/Scrum environments
- Openness to work hybrid from our clint's office (Kraków) 3 days a week

**Nice to have**

- Experience with AI-assisted development tools such as GitHub Copilot or Microsoft Copilot
- Experience with Oracle or PostgreSQL databases
- Familiarity with Azure cloud services
- Knowledge of Grafana, Prometheus, Splunk, Dynatrace, ELK, or OpenSearch
- Experience with OpenAPI/Swagger and GraphQL
- Strong testing background using JUnit 5, Mockito, TestContainers, Playwright, Cypress, or React Testing Library
- Experience mentoring developers and contributing to engineering standards and architecture decisions

## How to apply

Apply on the job page, https://poland-devjobs.com/jobs/gft-technologies-senior-fullstack-consultant-java-react-dfj6599: its Apply button opens the employer's own application page.

## More jobs from GFT Technologies

- [Senior DevOps Consultant](https://poland-devjobs.com/jobs/gft-technologies-senior-devops-consultant-969cnpg): GFT Technologies, Kraków, Poland. On-site. Salary: zł 136–170 / hour (B2B). Posted 3 November 2026.
- [Senior DevOps Consultant (Kafka)](https://poland-devjobs.com/jobs/gft-technologies-senior-devops-consultant-kafka-35tb1rg): GFT Technologies, Kraków, Poland. On-site. Salary: zł 135–170 / hour (B2B). Posted 30 October 2026.
- [Senior DevOps Engineer (Kafka)](https://poland-devjobs.com/jobs/gft-technologies-senior-devops-engineer-kafka-xycd02s): GFT Technologies, Kraków, Poland. On-site. Salary: zł 16k–24k / month. Posted 30 October 2026.
- [Senior Software Consultant (Python, Node.js and Go)](https://poland-devjobs.com/jobs/gft-technologies-senior-software-consultant-python-node-js-and-go-1ouwp46): GFT Technologies, Kraków, Poland. On-site. Salary: zł 125–160 / hour (B2B). Posted 29 October 2026.
- [Senior Software Engineer (Python, Node.js and Go)](https://poland-devjobs.com/jobs/gft-technologies-senior-software-engineer-python-node-js-and-go-vrl1ecb): GFT Technologies, Kraków, Poland. On-site. Salary: zł 15k–22k / month. Posted 29 October 2026.