Senior FinTech Engineer: Scale Large Systems, Lead & Mentor

Mollie; Amsterdam; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Mollie is seeking a Senior Engineer to lead the design and development of scalable financial products in Europe. You’ll shape architecture, drive end-to-end solutions, and mentor junior developers while collaborating with stakeholders.

The role emphasizes ownership, technical excellence, and delivering value in a fast-growing payment platform. You’ll contribute to Mollie Capital and in-person payments initiatives, expanding product offerings while maintaining high code quality and strong product

Qualifications

• 6+ years of experience in developing large-scale applications, preferably with PHP or Java.
• Proven experience in leading architectural decisions and technical initiatives.
• Experience in mentoring junior developers and driving team growth.
• Excellent communication skills with stakeholders.
• Creative problem-solving and product-focused thinking.
• Accountability and proactive improvement mindset.

Responsibilities

• Building Large-Scale Systems: Designing and engineering systems that can scale to handle high volumes of transactions.

Skills

Large-scale systems design

PHP/Java

Go/C#/Python exposure

Mentoring

Communication

Job description

Mollie is seeking a Senior Engineer to lead the design and development of scalable financial products in Europe. You’ll shape architecture, drive end-to-end solutions, and mentor junior developers while collaborating with stakeholders.

The role emphasizes ownership, technical excellence, and delivering value in a fast-growing payment platform. You’ll contribute to Mollie Capital and in-person payments initiatives, expanding product offerings while maintaining high code quality and strong product