Senior Java Developer: Legacy Modernization & Jakarta Migration

N-iX is seeking a Senior Java Developer to join a long-term modernization effort for a large US-based provider, focusing on upgrading a legacy Java platform while preserving essential business functions. You will work in the European supply chain context, modernizing the stack and addressing security to support the next 5–7 years. The role emphasizes a cost-effective modernization without a full rewrite, with collaboration across technical stakeholders and a transition from javax to jakarta as …