Application Engineer II

The role

You will design, build, and maintain backend systems and APIs at high scale. You will take end-to-end ownership of features and contribute to migration and modernisation initiatives.

What you will do

• Design, build, and maintain backend systems and APIs
• Take ownership of features from architecture to production support
• Contribute to migration and modernisation initiatives
• Transform technical and business requirements into production-ready solutions
• Participate in agile ceremonies including brainstorming, estimation, and sprint planning
• Identify and resolve complex issues across distributed systems

Required qualifications

• 5+ years of backend engineering experience
• Strong proficiency in Java
• Experience building and maintaining large-scale, high-volume systems
• Solid understanding of distributed systems, queuing, caching, concurrency, fault tolerance, and scalability
• End-to-end ownership mindset
• Strong communication skills

Nice to have

• Exposure to PHP
• Experience with Go, C#, or Python
• Background in financial systems, payments, or data-intensive applications

Benefits

• Regular feedback and performance reviews
• Fair and transparent salary reviews
• Opportunities to move into new roles or projects
• Support to build new skills

Before you apply

• Apply with your CV in English
• Relocation support is not offered for this role

About the company

Mollie makes payments and money management effortless for businesses in Europe. More than 250,000 companies use their products to get paid, manage money and grow.