Lead Java Software Development Engineer

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

Placering
Ballerup

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary
Lead Java Software Development Engineer
About Mastercard
At Mastercard, we work to connect and power an inclusive digital economy that benefits everyone, everywhere. We make transactions safe, simple, smart, and accessible through secure technology, partnerships, and innovation.
Our technology teams build the systems that power global commerce. We are looking for a highly skilled and motivated Lead Software Engineer to help shape and deliver the next generation of products and services.

Role Overview
As a Lead Software Engineer, you will play a key role in designing, building, and delivering robust, scalable, and secure software solutions. You will act as a technical leader within your team, driving engineering excellence and contributing directly to the development of critical systems.
This is a hands-on role with significant influence on architecture, technology choices, and delivery outcomes.

Key Responsibilities

Design and develop high-quality software solutions that meet performance, scalability, and security requirements
Lead the technical design and architecture of complex systems
Take ownership of end-to-end delivery, from initial design through deployment and ongoing operation
Write clean, maintainable, and efficient code, and perform code reviews to ensure quality standards
Collaborate closely with product managers, designers, and engineering teams across the organization
Identify and resolve technical challenges and production issues
Drive best practices in testing, automation, and continuous delivery
Improve system reliability, observability, and operational efficiency

Leadership Expectations

Provide technical guidance and mentorship to engineers within the team
Influence technical direction and promote high engineering standards
Foster a collaborative and inclusive team environment
Contribute to knowledge sharing and continuous improvement across teams

Skills and Experience

Strong experience in software development, including design and implementation of scalable systems
Solid understanding of system architecture and distributed systems
Experience with modern development practices, including automated testing and continuous integration and delivery
Ability to troubleshoot complex systems and drive improvements in performance and reliability
Strong collaboration and communication skills in a global environment

What We Offer

The opportunity to work on technologies that power global commerce
A collaborative, inclusive, and innovative work environment
The ability to grow your career across teams, domains, and geographies
Access to learning and development opportunities to continuously build your skills

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard’s security policies and practices;
• Ensure the confidentiality and integrity of the information being accessed;
• Report any suspected information security violation or breach, and
• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.