Expert Java Consultant (Kraków, PL, 30-302)

GFT Technologies SE; Polska; Hybrid; PLN 214,000 - 287,000; Full time

Job summary

GFT Technologies SE in Kraków is seeking a senior Java backend developer to design and build scalable microservices and distributed systems for the financial sector. You will create REST APIs, implement CI/CD pipelines, and deploy on Kubernetes using cloud-native technologies.

Join a team focused on performance, reliability, and security, collaborating with cross-functional engineers and supporting production systems through the full SDLC.

Qualifications

• 5+ years of hands-on Java backend development experience.
• Experience building microservices, REST APIs, and distributed systems.
• Experience with high-performance, scalable, and highly available applications.
• Experience with SQL, NoSQL, and large-scale data processing.
• Kubernetes, GKE and cloud platforms (preferably GCP).
• CI/CD, DevSecOps, and modern software practices.
• Strong system design, reliability, and maintainability knowledge.
• Agile team experience in complex enterprise environments.
• Willingness to work hybrid from client's Kraków office (8 days/month).

Responsibilities

• Design and develop high-performance Java services.
• Build scalable microservices and distributed systems.
• Create and maintain REST APIs.
• Optimize application performance and reliability.
• Implement CI/CD pipelines and DevSecOps practices.
• Work with SQL and NoSQL databases.
• Deploy and operate applications on Kubernetes.
• Process large data volumes in distributed environments.
• Collaborate with cross-functional engineering teams.
• Contribute to architecture and technical design decisions.
• Ensure security, maintainability, and scalability standards.
• Support production systems and resolve technical issues.

Skills

Java backend

Microservices

REST APIs

Distributed systems

Kubernetes

Cloud platforms (GCP)

CI/CD

DevSecOps

SQL/NoSQL

Agile

Hybrid work 8 days/mo

Tools

Kubernetes

GKE

Cloud services (GCP)

Job description

Type of contract: B2B contract

Salary range: 155-208 PLN/H

What will you do?

Join a team building and operating high-performance, highly available distributed systems for the financial sector. You will design and develop scalable backend services, work with modern cloud-native technologies, and contribute to the full software development lifecycle, from architecture and implementation to deployment and production support.

Your tasks

• Design and develop high-performance Java Services


• Build scalable microservices and distributed dystems


• Create and maintain REST APIs


• Optimize application performance and reliability


• Implement CI/CD pipelines and DevSecOps practices


• Work with SQL and NoSQL databases


• Deploy and operate applications on Kubernetes


• Process large volumes of data in distributed environments


• Collaborate with cross-functional engineering teams


• Contribute to architecture and technical design decisions


• Ensure security, maintainability, and scalability standards


• Support production systems and resolve complex technica ilissues

Requirements

• 5+ years of hands-on experience in Java backend development


• Experience building microservices, REST APIs, and distributed systems


• Experience developing high-performance, scalable, and highly available applications


• Experience with SQL, NoSQL, and large-scale data processing platforms


• Experience with Kubernetes, GKE, and cloud platforms, preferably GCP


• Experience with CI/CD, DevSecOps, and modern software engineering practices


• Strong understanding of system design, reliability, and maintainability


• Experience working in Agile teams within complex enterprise environments


• Openness to work hybrid from our client's office (Kraków) 8 days a month