Java Software Developer – Settlement & Tax Systems

Are you passionate about building modern scalable solutions using Java technologies Join our Settlement & Tax team as we develop and maintain new Settlement & Tax systems as part of our strategic Convergence project a transformation initiative moving from mainframe to a cutting-edge Java platform.

At Euronext Securities youll collaborate closely with colleagues cross borders with a team of experienced developers functional analysts and QA specialists. Together well navigate a complex and dynamic financial domain that impacts clients across Europe.

About the Role

As a Java Software Developer youll support both the development and operational aspects of our Settlement & Tax applications. The position is based in Copenhagen and we practice a 3 days a week in the office- policy. This is a unique opportunity to influence a high-impact system within a critical financial infrastructure.

What Youll Do

Develop test and maintain high-quality backend services using Java/Kotlin and Spring Boot.

Design and implement scalable event-driven architectures.

Build and integrate RESTful APIs aligned with OpenAPI standards.

Collaborate with cross-functional teams to deliver new features and system enhancements.

Troubleshoot and resolve application issues ensuring optimal performance and responsiveness.

Write clean maintainable and testable code following best practices.

Participate in code reviews and share knowledge with team members.

Support unit testing and continuous integration pipelines.

Use GIT for version control and team collaboration.

Contribute to our observability setup (experience with OpenTelemetry is a plus).

Create and maintain clear technical documentation.

What Were Looking For

Strong foundation in software engineering principles (e.g. Clean Code SOLID basic Domain-Driven Design).

Hands-on experience developing RESTful APIs using Java/Kotlin.

Familiarity with event-driven systems; experience with Kafka is a strong plus.

Proficiency in GIT and test-driven development.

Knowledge of or interest in observability practices (e.g. logs metrics tracing).

Experience with Quarkus or similar frameworks is highly desirable.

Strong problem-solving skills and a team-oriented mindset.

Why Join Us

Euronext Securities is a key player in Europes financial sector. As part of the Euronext Group we build solutions with a broad international scope collaborating with colleagues in Norway Portugal Italy and Denmark. Join us to shape the future of post-trade infrastructure and bring innovation to the heart of the financial system.

Euronext Values

Unity

We respect and value the people we work with

We are unified through a common purpose

We embrace diversity and strive for inclusion

Integrity

We value transparency communicate honestly and share information openly

We act with integrity in everything we do

We dont hide our mistakes and we learn from them

Agility

We act with a sense of urgency and decisiveness

We are adaptable responsive and embrace change

We take smart risks

Energy

We are positively driven to make a difference and challenge the status quo

We focus on and encourage personal leadership

We motivate each other with our ambition

Accountability

We deliver maximum value to our customers and stakeholders

We take ownership and are accountable for the outcome

We reward and celebrate performance

We are proud to be an equal opportunity employer. We do not discriminate against individuals on the basis of race gender age citizenship religion sexual orientation gender identity or expression disability or any other legally protected factor. We value the unique talents of all our people who come from diverse backgrounds with different personal experiences and points of view and we are committed to providing an environment of mutual respect.

Additional Information

This job description is only describing the main activities within a certain role and is not exhaustive. It does not prevent to add more tasks projects.