Lead Java Consultant

Type of contract: B2B contract

Salary range: 155 - 205 PLN/H

What will you do?

Join a strategic transformation initiative focused on building and enhancing an in-house collateral management platform. As a Senior Java Developer, you will design, develop, and integrate enterprise-grade solutions, working closely with architects, technical leads, QA engineers, and platform teams to deliver secure, scalable, and resilient applications while leveraging modern engineering practices and AI-enabled software development approaches.

Your tasks

• Design and develop Java-based microservices and backend components


• Build and integrate enterprise applications across multiple workstreams


• Collaborate with architects and technical leads on solution design decisions


• Implement robust testing strategies including unit and integration testing


• Develop and maintain CI/CD pipelines and quality controls


• Design and consume REST APIs and event-driven integrations


• Ensure application security, performance, resilience, and operational stability


• Contribute to cloud-based solution development on Google Cloud Platform


• Support delivery of AI-enabled engineering capabilities and software development practices


• Participate in troubleshooting, optimization, and continuous improvement activities

Requirements

• Around 8 years of professional software development experience


• Strong hands-on experience with Java and Spring Boot microservices


• Experience with Oracle and/or PostgreSQL databases


• Knowledge of schema design, performance tuning, and transactional processing


• Experience with JUnit, Mockito, Testcontainers, and API testing


• Experience with CI/CD tools such as Jenkins or GitLab


• Knowledge of code quality and security tooling including Sonar, SAST, DAST, and dependency scanning


• Understanding of REST APIs, integration patterns, messaging, and event-driven architectures


• Experience contributing to technical design and architecture discussions


• Hands-on experience with Google Cloud Platform


• Knowledge of GenAI concepts, LLMs, RAG, and agent-based architectures


• Understanding of AI governance, controls, and responsible engineering practices


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

Nice to have

• Experience in regulated financial services environments


• Knowledge of cloud-native technologies including containers and Kubernetes


• Experience with service mesh and observability tools


• Knowledge of performance engineering and resilience testing


• Experience implementing AI-enabled SDLC practices


• Hands-on experience building or integrating GenAI solutions


• Experience with prompt management, evaluation frameworks, or RAG pipelines