Java Technical Lead

The Opportunity

If you are a hands-on engineer who loves solving hard technical problems and is passionate about mentoring others, we want to hear from you. Whether you're already a Tech Lead or a Senior Developer ready to take the next step, this role gives you the space to grow into technical leadership.

The Core Foundation & Integration Tribe (CFI) implements and delivers the Issuing core applications, from Card Issuing lifecycle to Transactions clearing & settlement. With over 150 million cards and 1.16 billion monthly transactions, our platforms operate at the forefront of capacity and performance.

We are now seeking a visionary Tech Lead to drive our strategic product transformation and help us build scalable, secure and innovative solutions.

As Tech Lead, you will integrate into a diverse, agile, and collaborative cross-cultural team consisting of business analysts, fellow tech leads, developers, and testers. You will play a pivotal role by exploring and defining technical solutions, mentoring team members, guiding the architecture and evolution of our applications to ensure robustness, scalability and future readiness.

Day-to-Day Responsibilities​

• Architect and develop applications leveraging modern frameworks and cloud platforms.
• Define technological choices, best practices, and ensure secure, maintainable code.
• Conduct code reviews, oversee CI/CD processes, and support technical design decisions to deliver high-quality, scalable issuing payment solutions.
• Promote team skills development through training, knowledge sharing, and technical mentorship.
• Collaborate with internal teams to align on feature development and system improvements.
• Optimize performance, security, and cloud cost efficiency of applications.

Who Are We Looking For

At Worldline, we seek individuals who are visionary and capable of driving positive change. People who can step up and show what’s next. We value those who take initiative, demonstrate a passion for their work, possess a can-do attitude, and have a desire to learn and grow.

In practice this means:

• Degree in scientific fields, 5+ years of hands-on software development experience.
• Strong technical expertise in Java and Spring Boot, with solid frontend experience in at least one modern framework (Angular, React, or Vue.js).
• Proficiency with Kubernetes, REST, MySQL, PostgreSQL, Kafka, and CI/CD tools like GitLab CI.
• Practical experience using AI coding assistants (e.g., GitHub Copilot, Claude Code) in day-to-day development.
• Strong solution design and analytical skills; Scrum experience is a plus.
• Ability to simplify complex concepts, foster team collaboration, and motivate across international environments.
• Demonstrated problem-solving skills, innovation focus, and the leadership potential to guide development teams and foster continuous improvement.
• Experience in the payments industry, including credit card schemes (VISA, Mastercard) and the credit card lifecycle, is a strong plus.
• Excellent written and spoken English (C1); additional languages (French, German, Italian) are appreciated.

Perks & Benefits

At Worldline you’ll get the chance to be at the heart of the global payments technology industry and shape how the world pays and gets paid. On top of that, you will also:

• Hybrid Working Policy
• Gift vouchers on the occasion of Christmas/Easter Holidays
• Private medical services
• 21 vacation days/year
• Referral bonuses for new hires recommended by you
• WFH & Flexible Working Hours
• Full access to the “Learning” platform