Senior Java Consultant

GFT · Kraków, Poland · On site · 12 days ago

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Posted October 03, 2026 · Read from GFT
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Type of contract: B2B contract

Salary range: 125 - 160 PLN/H

What will you do?

You will join a large-scale transformation programme focused on building and integrating a global collateral and facility management platform using modern engineering practices and AI-enabled software delivery. As a Senior Java Developer, you will design, develop, and enhance production-grade services while ensuring high standards of quality, security, performance, and operational resilience. Working closely with architects, Tech Leads, QA engineers, and platform teams, you will contribute to complex integrations and help deliver business-critical capabilities in a fast-paced environment.

Your tasks

Design and develop enterprise-grade Java microservices and backend solutions

Build and maintain integrations using REST APIs and event-driven architectures

Collaborate with architects and technical leads on solution design and implementation decisions

Create and execute unit, integration, and automated tests

Contribute to CI/CD pipelines, quality gates, and release processes

Optimize application performance, reliability, and scalability

Support cloud-based deployments and platform improvements

Participate in code reviews and engineering best practices initiatives

Work closely with cross-functional teams to deliver features aligned with business objectives

Ensure compliance with security, governance, and operational standards

Requirements

Around 6 years of professional software engineering experience

Strong hands-on experience with Java and Spring Boot microservices

Solid experience with Oracle, PostgreSQL, or other relational databases

Experience with schema design, performance optimization, and transactional systems

Strong unit and integration testing skills using JUnit, Mockito, Testcontainers, or similar tools

Experience with API design, REST services, and integration patterns

Knowledge of CI/CD pipelines and quality assurance practices

Experience with Jenkins, GitLab, SonarQube, SAST, DAST, or dependency scanning tools

Hands-on experience with Google Cloud Platform (GCP)

Strong understanding of software design principles and engineering trade-offs

Exposure to GenAI concepts, LLMs, and AI-assisted software development

Knowledge of RAG or agent-based architectures and associated governance considerations

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

Nice to have

Experience delivering solutions within regulated financial services environments

Knowledge of containerization and Kubernetes

Experience with service mesh technologies

Experience with observability and monitoring platforms

Performance engineering and resilience testing experience

Experience implementing AI-enabled SDLC practices

Hands-on experience with GenAI prototyping and integration

Knowledge of evaluation frameworks, prompt management, and version control for AI solutions

Employer
GFT
Location
Kraków, Poland · On site