Senior Software Engineer – Java Backend

About the role

Mastercard is looking for a Senior Software Engineer to join the RTP Team in Oslo and help build the next generation of payment services for Norway. You will work on the Norwegian Batch Clearing Service (NICS Core), a critical national infrastructure component.

Key responsibilities

• Design, develop and maintain Java‑based backend solutions for payment clearing and settlement.
• Ensure high quality, performance and scalability of the NICS Core platform.
• Collaborate with product owners, architects, infrastructure and other engineering teams using agile (Scrum/Kanban) practices.
• Continuously improve processes, adopt modern development tools and explore AI‑backed productivity enhancements.
• Contribute to the security and compliance requirements defined by the Norwegian Security Act.

Required profile

• Several years of professional experience in Java development, preferably in the financial or payments sector.
• Hands‑on experience with backend frameworks such as Spring and building REST APIs.
• Familiarity with agile development methodologies (Scrum or Kanban).
• Ability to work in a cross‑functional team and take ownership of delivery.
• Willingness to engage with security standards for critical national infrastructure.

Required skills

• Java
• Spring
• REST APIs
• Hibernate
• Bitbucket
• Git
• CI/CD pipelines
• Maven
• IntelliJ IDEA

What we offer

• Opportunity to work on a mission‑critical national payment platform.
• Access to modern development tools, including AI‑assisted coding utilities.
• Collaborative, agile environment with high ownership.
• Competitive compensation and benefits aligned with Mastercard standards.