Senior Fullstack Lead: Java/Spring Microservices

GFT Technologies SE; Kraków; Hybrid; PLN 194,000 - 298,000; Full time

Benefits offered by this job

Hybrid work Kraków

Medical & sport benefits

Lunch subsidy

Life insurance

Online training

E-learning platform

Social events

Job summary

GFT Technologies SE in Kraków seeks an experienced Senior Java backend engineer with strong Spring expertise to design, build, and support enterprise-grade applications. You will lead engineering efforts, mentor teammates, and collaborate in Agile teams to deliver resilient, scalable platforms and provide frontend contributions when needed.

The role emphasizes backend development, API design, containerization with Docker/Kubernetes, and hands-on leadership within a hybrid, client-facing

Qualifications

• 8+ years of enterprise application development experience
• 2+ years of technical team leadership experience
• Strong expertise in Java
• Strong expertise in Spring Boot, Spring Data, Spring REST, Spring Security, and Spring Profiles
• Hands-on experience with microservices architecture
• Hands-on experience with micro-database architecture
• Experience with event-driven systems
• Experience with ReactJS
• Experience with TypeScript
• Experience creating API specifications using Swagger or OpenAPI
• Strong automated testing skills with JUnit and mocking frameworks
• Experience supporting batch processing applications
• Strong understanding of logging and error handling practices
• Hands-on experience with Docker
• Hands-on experience with Kubernetes
• Cloud services development experience
• Experience with code scanning and remediation of security and quality findings
• Experience working in Agile Scrum environments
• Experience using JIRA and Confluence

Responsibilities

• Design, build, and support backend services and APIs using Java and Spring
• Create solution designs and technical documentation including UML diagrams
• Deliver end-to-end features across backend and frontend components
• Implement microservices and micro-database architectures with clear API contracts
• Build integrations using event-driven architecture patterns
• Develop workflow-driven capabilities using BPMN-based solutions
• Ensure production readiness through logging, monitoring, resilience, and error handling
• Develop and maintain batch processing solutions
• Drive software quality through automated testing and code scanning
• Containerize and deploy applications using Docker and Kubernetes
• Collaborate within Agile Scrum teams using JIRA and Confluence
• Provide technical leadership, mentoring, and delivery guidance to team members

Skills

Java

Spring Framework

Backend development

ReactJS

TypeScript

Microservices

Event-driven architecture

Docker

Kubernetes

Swagger/OpenAPI

JUnit & testing

JIRA & Confluence

Tools

Docker

Kubernetes

Swagger/OpenAPI

JIRA

Confluence

Job description

GFT Technologies SE in Kraków seeks an experienced Senior Java backend engineer with strong Spring expertise to design, build, and support enterprise-grade applications. You will lead engineering efforts, mentor teammates, and collaborate in Agile teams to deliver resilient, scalable platforms and provide frontend contributions when needed.

The role emphasizes backend development, API design, containerization with Docker/Kubernetes, and hands-on leadership within a hybrid, client-facing