Lead Java Engineer: Build Scalable & Secure Systems

Mastercard Payment Services Denmark A/S; København; On-site; DKK 900,000 - 1,200,000; Full time

Job summary

Mastercard Payment Services Denmark A/S in Ballerup is seeking a Lead Java Software Development Engineer to shape and deliver scalable, secure software systems.

You will lead software design, mentor engineers, and own end-to-end delivery from design to deployment across global teams. The role emphasizes modern development practices, testing, CI/CD, and collaboration with product managers and designers.

Qualifications

• Bachelor's degree in computer science or a related field.
• Strong experience in Java and building scalable distributed systems.
• Experience with CI/CD, automated testing, and cloud deployments.

Responsibilities

• Design and develop high-quality Java software solutions meeting performance and security requirements.
• Lead the technical design and architecture of complex systems.
• Take ownership of end-to-end delivery from design through deployment and operation.
• Write clean, maintainable code and perform thorough code reviews to uphold quality.
• Collaborate with product managers, designers, and engineering teams across the organization.
• Identify and resolve technical challenges and production issues, driving improvements.
• Improve system reliability, observability, and operational efficiency.

Job description

Mastercard Payment Services Denmark A/S in Ballerup is seeking a Lead Java Software Development Engineer to shape and deliver scalable, secure software systems.

You will lead software design, mentor engineers, and own end-to-end delivery from design to deployment across global teams. The role emphasizes modern development practices, testing, CI/CD, and collaboration with product managers and designers.