Application Engineer II - Hosted Integrations

Application Engineer II - Hosted Integrations

Mollie is one of the fastest-growing Fintech in Europe, and we are facing many exciting technical and organisational challenges. Serving more than 250,000 businesses across the continent, we aim to cut through financial bureaucracy that hinders great ideas from growing. Our belief is that accepting payments, driving revenue, accessing capital, and managing money should be seamless for every business.

The Hosted Integrations team builds the essential connections between Mollie and major e-commerce platforms like Shopify, Wix, Lightspeed, and Mirakl. As an Application Engineer II on this team, you will design, build, and migrate the services that directly empower thousands of businesses to seamlessly accept payments and grow their operations. We're looking for an engineer with a product mindset who excels at solving complex problems in a distributed systems environment.

What You'll Do

Build and scale robust backend services and APIs using Java.

Migrate legacy integrations to our modern, event-driven microservices platform.

Own the development of new features from technical design to deployment.

Collaborate with Product and other engineers to define and deliver high-impact solutions.

Improve the reliability and performance of our distributed systems.

Your Profile

Required: Strong proficiency in Java.

Experience with distributed systems, microservices

Skilled with relational databases (MySQL/PostgreSQL) and caching (Redis).

Experience with asynchronous communication and event-driven patterns.

You are product-aware and focused on user impact.

Nice to Haves

Some experience with frontend development using ReactJS, TypeScript, HTML, and CSS. The ability to contribute across the stack is a significant plus.

Familiarity with Spring Boot.

Cloud experience (GCP/AWS).

Knowledge of functional programming principles.

Background in payments or marketplace platforms.

Frontend: ReactJS, TypeScript

Database: MySQL, Redis

Infrastructure: GCC

Kindly note that relocation support is not offered for candidates outside of Europe for this role.

Please apply to this job by sending over your CV in English.

MacBook

Birthday off

Complimentary baby days

20 days working from abroad

22 holiday days

Health insurance

Equity plans

Referral bonus

Learning platform

Work from home budget

How we hire

Step 1

Apply

Our Talent Acquisition team and hiring manager will review your application, and respond within 2 weeks.

Step 2

Screening call

If you seem like a Mollie-in-the-making, we’ll invite you to a screening call so we can learn more about each other.

Step 3

Are you the one?

You'll have two or more interviews. And if it's a highly technical role, we'll also assess the specific skills you'll need.