Your opportunity 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. As an Application Engineer II at Mollie, you will have the opportunity to utilize your technical and leadership skills to develop innovative, user-friendly financial products and APIs that serve tens of thousands of merchants daily. Your role will focus on creating highly scalable solutions capable of processing numerous payments per second, where code quality and system performance are critical. You will play a vital part in building robust architectures and optimizing our systems to meet the increasing demands of our merchants, while also having the chance to bring your product development ideas to life as we pursue ambitious expansion plans. Our Milan Hub: In 2023, we successfully launched a new hub in one of the most vibrant cities in Europe: Milan! Since its inception, the Milan hub has been consolidated and continues to grow at a fast pace, contributing significantly to Mollie's mission with multiple passionate agile engineering teams that will innovate, build, and enhance our portfolio of next-generation payment products. You'll work in a cross-functional team (Data, Machine Learning, Platform and Product) to accelerate our product delivery. What you will be doing: * Technological Flexibility: We welcome experience in any object-oriented programming language. While we primarily use PHP and Java, we view these as tools to create solutions for our customers. * Building Large-Scale Systems: Help us design and develop systems that can scale to manage high volumes of transactions efficiently and effectively. * API and Service Development: Design, build, and maintain APIs, services, and systems across Mollie's engineering teams. Work on service integrations with various systems to ensure seamless operations. * Collaboration Across Domains: Work closely with engineers, marketing, partnership, and product teams to build and enhance features on a large scale. Cross-functional collaboration is key to our success. * Communication: Excellent English communication skills, with experience working effectively with various stakeholders. Can explain complex problems and solutions in simple terms. Have the ability to influence technical and non-technical audiences * Autonomy and Ownership: Lead technical initiatives from architecture design to implementation, ensuring engineering excellence throughout the process. We value autonomy and the ability to drive projects independently. * Problem-Solving: Utilize your creative problem-solving skills and analytical abilities to resolve complex issues and contribute to our mission of making financial processes effortless. What you will bring: * 3+ years of experience in Software Engineering * Experience with large-scale applications * Experience in designing systems and handling queuing, caching, concurrency, fault tolerance and scalability. * Always Be Shipping mindset 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.