Expert - Senior Java Developer

Mission

Join our dynamic Migration Factory team, the core engine driving technical transformation within the Solon project. We are looking for skilled Java developers to support end-to-end modernization of legacy systems, focusing on efficiency, standardization, and scalability while ensuring high quality.

You will be part of a long-term initiative to migrate and re-architect existing applications into a modern, event-driven ecosystem. Your role starts with technical modernization and evolves into the design and development of future-proof, Kafka-integrated components.

Responsibilities :

Migrate legacy applications using a standardized Migration Factory approach

Analyze high-level requirements and implement missing technical details

Collaborate with a high-performance team in a deep-end, fast-paced environment

Perform initial technical modernization of legacy systems

Participate in full re-modernization and architectural alignment with the “Landscape of the Future”

Design and develop event-driven components integrated with Apache Kafka

Profile

Strong experience in Java development

Solid knowledge of Spring Boot framework

Hands-on experience with event-driven architecture , ideally using Apache Kafka

Proven track record in legacy system modernization and migration

Practical experience with Kubernetes and containerized deployments

Ability to work independently with minimal specifications

Sound understanding of design and integration patterns

Commitment to writing clean, maintainable code and well-structured unit tests

Practical experience with PostgreSQL

Work model : Hybrid (3 days per week on-site at the office) - Warsaw / Poznan / Lublin