Senior Java Developer
N-iX, European Union
The role
N-iX is looking for a Senior Java Developer to join a long-term modernization initiative for a large US-based provider of marketing, packaging, print, and supply chain services serving Fortune-level clients worldwide.
You will work within the customer's European supply chain division, supporting warehousing, fulfillment, kitting, and packaging operations for global brands in electronics, medical devices, and consumer products. The main stakeholder is a Software Development Manager who originally built the system and remains deeply involved in its technical evolution.
What you will do
- Lead and execute the migration of a large legacy Java application
- Upgrade Java versions and modernize the framework stack
- Perform migration from javax to jakarta
- Upgrade dependencies and address security vulnerabilities
- Analyze and refactor legacy code where required
- Create unit and integration tests for existing functionality
- Support regression testing activities
- Collaborate closely with the customer’s technical stakeholders