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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Application Engineer II - Data Intelligence Products - **Company:** Mollie - **Location:** Amsterdam, Netherlands - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), PHP (Programming Language), Business Analytics Applications, C Sharp (Programming Language), Payment Systems, Fault Tolerance, Data Intelligence, Python (Programming Language), Concurrency, Caching, Backend, Machine Learning Operations, Golang - **Published:** June 7, 2026 - **Apply:** https://nl.indeed.com/viewjob?jk=0e65d9c621fb4350 ## About the Role Do you have experience in Scalability?, * 5+ years of experience developing large-scale backend applications, with strong proficiency in Java (primary requirement); experience with PHP, Go, C#, or Python is also valued * Proven experience designing systems that handle queuing, caching, concurrency, fault tolerance, and scalability in high-volume, high-intensity environments * Experience working with data-intensive systems, ML infrastructure, or analytics platforms - you don't need to build models, but you understand data and how to engineer around it * A product-first mindset - you think in terms of merchant outcomes like conversion, revenue, and protection, not just technical elegance * Excellent communication skills and the ability to work effectively across engineering, product, and business stakeholders in a fast-moving, entrepreneurial environment * An Always Be Shipping mentality - consistently delivering value where speed and quality go hand in hand ## Description Since 2004, we've had one clear goal: to make payments and money management effortless for every business in Europe. Today, more than 300,000 companies use Mollie to get paid, manage money and grow - with products designed to be simple, scalable, and dependable. With 950+ Mollies across 14+ locations, we care deeply about autonomy and craft. So we work in small teams, with real ownership, and we trust you to make the right decisions. We're building for the long term, so we provide the tools you need, processes you can rely on, and a balanced work environment to help you do work you're proud of. Sound like your kind of place? Let's build together. Your impact Mollie is building its next strategic frontier - turning our unique data assets into an intelligence offering that transforms us from a financial toolkit into an indispensable growth partner for our merchants. As an Application Engineer II on the Data Intelligence Products team, you'll be at the centre of that mission: productising Mollie's data to deliver cross-domain, customer-facing capabilities - from actionable business insights and performance benchmarking, to payment optimisation and adaptive fraud protection. This is a high-ownership, entrepreneurial role in a small, fast-paced team operating in a true "zero to one" environment. Your work will be highly visible to senior leadership and will directly shape how Mollie wins and retains upmarket merchants. You'll have the freedom to take ideas from concept to production quickly, building the foundational platform and launching features that span the full breadth of Mollie's product surface - giving merchants the enterprise-grade analytics, monitoring, and optimisation tools they need to drive conversion, protect revenue, and grow with confidence. What you'll ship * Transform internal data into customer-facing products - shifting focus from internal operations to merchant-facing utilities that drive real business outcomes * Build and launch features within Mollie's Insights product and expand into payment conversion optimisation, applying data-intensive engineering to core payment systems * Design and deliver reliable, performant architectures capable of operating at high scale and high transaction intensity * Contribute to the foundational platform that powers Mollie's data intelligence offering across fraud protection, benchmarking, and analytics * Collaborate with engineers, product managers, and senior leadership to shape the product as you build it - from idea through to production ## Related Videos - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [HTTP headers that make your website go faster](https://www.wearedevelopers.com/videos/1676-http-headers-that-make-your-website-go-faster) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Scoring 2000 Products per Request: Performance Pitfalls in Golang](https://www.wearedevelopers.com/videos/2073-scoring-2000-products-per-request-performance-pitfalls-in-golang) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) ## Related Articles - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe)