Senior Software Engineer (Kotlin)

Join us and get a once-in-a-lifetime opportunity to literally build a local banking champion!

You'll join our Cards Engineering team to build and enhance modern card issuing and payment solutions. In this role, you’ll design and develop cloud-native, event-driven applications using Kotlin and modern JVM technologies, contributing across the full software development lifecycle.

What You Will Do:

• Develop card systems and card related services, supporting card issuing integrations with internal and external systems.
• Contribute to the development of cloud native, event-driven applications within the Cards Engineering domain as part of an agile team.
• Design, implement, and maintain software components for card processing flows, ensuring compliance with banking IT standards and regulatory requirements.
• Ensure high performance, reliability, and maintainability of mission critical card applications through clean, well-tested code.
• Participate in code reviews, applying best practices and ensuring consistent coding standards across the cards platform.
• Take part in the full software development lifecycle, including development, testing, deployment, and production support of card systems.
• Collaborate closely with product owners, architects, and other engineers to deliver reliable and scalable card payment solutions.
• Create and maintain technical documentation related to card systems, integrations, and operational processes.
• Stay up to date with industry trends in payments, cards, and banking technology to continuously improve solutions and ways of working.

• Strong experience in Kotlin (JVM), including frameworks and tools such as Spring/Spring Boot 3.0+, Jenkins, Git, Maven, Docker, and modern JVM development practices.
• Basic knowledge with cloud native deployments, preferably on AWS, using Terraform, Kubernetes, and ArgoCD.
• Experience with event driven architecture, including message handling with Kafka.
• Practical experience with asynchronous processing, flow orchestration, and system to system integrations.
• Experience with S3 file processing, batch and near real time data flows.
• Experience with RESTful API design & development, SOAP-based services.
• Strong focus on code quality: addressing technical debt, writing clean and maintainable code, and automating tests.
• Experience in banking or card/payment systems (card issuing, acquiring, authorization, clearing, or settlement) is a strong advantage.
• Interest or experience in using LLMs in software development process.
• Fluent English is required in spoken and written communication.

• Flexibility. Flexible working hours, hybrid work, and the possibility to work from anywhere in the EU, Iceland, Switzerland, and the UK (in total 90 days per year).
• International teams. Teams that go outside Pan-Baltic borders, where people value challenging work together with good humor and having fun.
• More vacation. Additional weeks of vacation are available to all employees who have been in the company for 1 year or more.
• Volunteer time off. We care about giving back to society, therefore, you will get additional days off for volunteering purposes.
• Paid leave. We are proud of our employees who are participating in military training. Therefore, Luminor offers 30 fully paid calendar days for military training every year.
• Health benefits. A competitive benefits package in addition to your salary that includes health insurance after the first 3 months pass in all three Baltic states, as well as Health days in case of your absence due to sickness without a doctor's note needed.
• Wellbeing. Access to tools and resources that help you feel good and be productive at work and in life.
• Professional growth. Internal and external training programs, workshops, conferences, online training, etc.
• Special Offer for Luminor products & services. Enjoy special offers & pricing for products and services provided by Luminor.
• Gross salary. 4400-6200 EUR/month, which is to be determined depending on your level of experience and competencies.