Senior Fullstack Engineer - Cloud (React/Java, Kafka)

GFT TECHNOLOGIES SE; Kraków; Hybrid; PLN 163,000 - 249,000; Full time

Benefits offered by this job

Hybrid work in Kraków office

Medical, sport, lunch subsidy

Online training & certifications

Social events

Job summary

GFT Poland is seeking an senior software engineer to drive frontend and backend development for large-scale financial services platforms. Hybrid work in Kraków, with deep involvement in scalable and secure cloud-native solutions.

The role requires 7+ years in enterprise software, expert Java/Spring Boot experience, React/TypeScript proficiency, and strong knowledge of Kubernetes, Kafka, and CI/CD pipelines. You will mentor teams and shape architectural decisions.

Qualifications

• 7+ years of professional software development experience in enterprise environments.
• 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.

Responsibilities

• 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 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.

Skills

Soft skills

Agile/Scrum

Communication

Mentoring

Team collaboration

Problem solving

Leadership

Tools

React

TypeScript

Java

Spring Boot

Kubernetes

Terraform

Helm

Apache Kafka

REST APIs

JVM tuning

Spring Security

Microservices

OpenAPI/Swagger

Job description

GFT Poland is seeking an senior software engineer to drive frontend and backend development for large-scale financial services platforms. Hybrid work in Kraków, with deep involvement in scalable and secure cloud-native solutions.

The role requires 7+ years in enterprise software, expert Java/Spring Boot experience, React/TypeScript proficiency, and strong knowledge of Kubernetes, Kafka, and CI/CD pipelines. You will mentor teams and shape architectural decisions.