Application Engineer I

MilanFull-time2026-11-11 → 2026-11-12

Core

Reintegrate external e-commerce platform integrations (Shopify, Wix, Lightspeed, Mirakl) into Mollie's unified Java gateway codebase to ensure smooth high-volume payment processing.

Role type

Mid-level backend Java engineer

Builds

Unified e-commerce gateway codebase and partner integrations

Domain

Fintech / Payments / E-commerce

Required skills

Java, object-oriented programming, React, scalable application architecture, cloud environments (GCP preferred)

Preferred skills

Experience with gateway systems

Technologies

Java, React, React Native, Google Cloud Platform

Responsibilities

Reintegrate external integrations into the unified codebase, maintain and streamline existing integrations, deliver small defined projects end-to-end, write testable code and documentation, monitor and extend systems, participate in support rotations

Seniority

Mid-level, hands-on IC

About Mollie

Financial Services1168Amsterdam, North Holland, NLFounded 2004

Mollie offers a single platform for businesses to get paid and manage their money. One that makes payments, reconciliation, reporting, fraud prevention, and financing simple for all – from startups to enterprises. Founded in 2004, Mollie’s mission is to make payments and money management effortless for every business in Europe. Our 850-strong team works from offices across the continent, including Amsterdam, Ghent, Lisbon, London, Maastricht, Milan, Munich, Berlin, Kiel and Paris. Today, more than 250,000 businesses use Mollie to drive revenue, reduce costs, and manage funds.