Senior Software Engineer (Java)

Join our team as a Senior Software Engineer!

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. 

Whoever you are and whatever your role is, with Luminor, you will get a once-in-a-lifetime opportunity to build a local banking champion.

We are looking for an experienced Java Engineer to join our Payments engineering area. You will design and build secure, reliable and scalable backend services supporting the full customer payment journey end to end across the Baltics.

This is a hands-on engineering role for someone who enjoys complex backend systems, event-driven architecture and solving problems where security, correctness, resilience and operational stability matter. You will stay close to the code while actively contributing to architecture and technical design decisions.

How You Will Make an Impact:

• Design, develop and maintain Java and Spring Boot backend services.

• Build secure REST APIs and event-driven integrations.

• Contribute to architecture and technical design decisions.

• Translate complex business needs into clear and maintainable technical solutions.

• Own solutions throughout their lifecycle, from design and implementation to production support.

• Apply Luminor engineering, architecture, development and security best practices.

• Write clean, testable and maintainable code.

• Improve automated testing, observability and production readiness.

• Review code and technical designs and share knowledge with other engineers.

• Use AI-assisted engineering tools and agents across software design, development, testing, code review, documentation and troubleshooting.

• Work closely with product owners, architects, engineers, business stakeholders and platform teams.

• Support the modernization of payment capabilities into scalable and cloud-ready services.

Our Tech Stack

• Backend: Java 25+, Spring Boot 4+, Spring Framework

• Architecture: Microservices, distributed systems, domain-driven design and event-driven architecture

• Messaging: Apache Kafka

• Cloud: AWS

• Containers and orchestration: Docker, Kubernetes

• Infrastructure as code: Terraform, Helm

• CI/CD: GitLab CI/CD

• Database: PostgreSQL

• Quality: JUnit, automated integration testing, code quality and security scanning

• AI-assisted engineering: AI coding assistants, engineering agents and automation across the software delivery lifecycle

What Makes You a Great Fit:

• Strong hands-on experience with Java and Spring Boot.

• Experience designing distributed, event-driven or high-volume transactional systems.

• Strong understanding of software architecture, microservices, APIs and integration patterns.

• Ability to evaluate options, explain trade-offs and make pragmatic design decisions.

• Experience with Kafka or comparable messaging technologies.

• Practical cloud experience, preferably AWS.

• Experience with relational databases and transaction consistency.

• Understanding of secure development, automated testing, CI/CD and observability.

• Strong practical experience with AI coding assistants and engineering agents, including the ability to apply them effectively while validating generated results and following security requirements.

• Strong ownership mindset and accountability for delivered solutions.

• Ability to work effectively with technical and business stakeholders.

• Clear communication and knowledge-sharing skills.

• Fluent English is required in spoken and written communication due to working on Pan-Baltic level. 

Why You Will Love Working Here:

• 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

• Gross salary. 4500–6500 EUR/month, which is to be determined depending on your level of experience and competencies

The application deadline is the 25th of October. 

We are looking for a candidate primarily already located within the Baltics. Please apply with your CV in English and PDF format!