Senior Java Software Engineer, Core API Unit

Role Overview

• Design, implement, and continuously improve systems for messaging, service-to-service communication, APIs, file, and workflow management, supporting all business streams across Luminor
• Build and evolve event-driven systems using Apache Kafka as a core backbone
• Take ownership of solutions end-to-end — from design to production stability
• Ensure high standards of quality, security, availability, and performance, applying engineering best practices
• Drive technical discussions, contribute to architecture decisions, and challenge existing solutions where needed
• Build Proof of Concepts to validate ideas and new technologies
• Collaborate closely with engineers, architects, and stakeholders to solve complex problems together
• Troubleshoot production issues, perform testing, and continuously improve system reliability
• Gain deep understanding of the bank’s processes and products
• Be part of a cross-functional Agile team
• Work in an international environment

Requirements

• Strong hands-on experience in software development with Java (preferably Java 21)
• Proven experience designing and building distributed, event-driven systems (Kafka or similar)
• Hands-on experience with AWS cloud platform and container orchestration (e.g. Kubernetes, Docker), as well as CI/CD pipelines (e.g. Argo CD)
• Experience with modern microservices architecture and API design
• Solid understanding of SQL databases; experience with NoSQL databases is a plus
• Strong ownership mindset — you take responsibility for what you build
• Ability and motivation to tackle challenging engineering problems
• Team player who values collaboration and knowledge sharing
• Fluent English is required in spoken and written communication due to working on the Pan-Baltic level

Tech Stack

• Apache
• AWS
• Cloud
• Docker
• Java
• Kafka
• Kubernetes
• Microservices
• NoSQL
• SQL

Benefits

• 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
• Culture. You’ll be joining a team where things move fast, ideas flow freely, and change is part of the everyday. It’s a dynamic environment that keeps you learning, growing, and never bored
• 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, LinkedIn learning, workshops, conferences, online training, etc
• Special Offer for Luminor products & services. Enjoy special offers & pricing for products and services provided by Luminor