Senior Java Software Engineer (Luminor WebService)

What You Will Do as a Senior Java Software Engineer

You will play a hands-on role in solving real, high-impact challenges across our financial transaction system. Key focus areas include:

• Code Refactoring & Technical Debt Reduction: Analyze, clean up, and improve legacy code for better readability, performance, and maintainability. Simplify overengineered flows and improve business logic consistency.
• Modernizing the Software Stack: Upgrade Java versions, refactor legacy services, manage dependencies, and transition outdated SOAP-based flows to scalable, cloud-native components
• Database/UI Remodeling: Optimize PostgreSQL performance, resolve duplicate access issues, improve access rights logic, and streamline slow-loading UI workflows caused by large data volumes
• Data Management: Implement efficient purging, retention strategies, and historical data clean-up
• Bug Fixes and Root Cause Analysis: Address existing issues in SOAP flows, access management, and data mismatches between UI and DB
• Cloud Integration & Flow Redirection: Work with S3, routing logic, and new microservice flows to support an incoming payment engine
• XML Management & Regulatory Support: Handle ISO standard changes, XML schema evolution, and validation across multiple versions
• Feature Development: Build support for e-invoices, payment limits, statements from external banks, and new payment-related features
• Documentation & Automation: Improve internal documentation and contribute to automated test coverage and test strategy

What We Expect:

• Strong Java 11+ development experience with Spring Boot and SOAP
• Solid understanding of PostgreSQL database design, optimization, and access control logic
• Strong Git skills: resolving conflicts, rebasing, writing clear changelogs
• Hands-on experience with cloud-native deployments (preferably AWS), Kubernetes, and CronJobs
• Experience with message handling, S3 file processing, and asynchronous flow redirection
• Familiarity with XML parsing, transformation, and validation logic
• Experience addressing technical debt, writing clean code, and automating tests
• Ability to read through unclear legacy logic, ask the right questions, and improve structure
• Comfortable working in a team that is rebuilding and modernizing under pressure
• Fluent English is required in spoken and written communication due to working on the Pan-Baltic level

What We Offer:

• Flexible working hours, Hybrid work, and a possibility to work from anywhere in the EU, Iceland, Switzerland, and the UK (in total 90 days per year)
• Additional weeks of vacation to all employees with 1+ years tenure
• Volunteer time off and 30 fully paid calendar days for military training every year
• Competitive health benefits package – health insurance after the first 3 months as + health days in case of your absence due to sickness without a doctor's note
• Internal and external training programs, workshops, conferences, online trainings for professional growth and wellbeing
• Special Offers for Luminor products & services
• Working with international teams who value challenging work together with good humor and having fun
• Gross salary. 4,000 - 7,500 EUR/month. The final offer will depend on the level of your experience and competencies

And last but not least - Yes, you can! That's our attitude towards our work, ambitions, ideas, and relationships. We at Luminor believe that anyone has the potential to achieve big things and encourage everyone to achieve them – professionally and personally.

Regardless of your role, with us, you will get a once-in-a-lifetime opportunity to build a local banking champion.

The application deadline is the 29th of August. We are looking for a candidate primarily already located within the Baltics. Please apply with your CV in English and PDF format!