Senior Software Engineer Mechelen (Hybrid)
Please read the following job description thoroughly to ensure you are the right fit for this role before applying. Every day, billions of financial transactions move through the world's banking system. Fraud hides in that data. Compliance failures lurk in it. Operational risks surface in it - often too late.We're a global leader in real-time transaction intelligence, trusted by over 130 financial institutions across 60+ countries - from retail and private banks to Central Securities Depositories. Our platform gives banks the power to see, secure, and optimise every transaction as it happens.The technology is genuinely hard. And we're looking for an engineer who wants both. We're hiring a Senior Software Engineer to join the core Transaction Observability team in Mechelen. You'll work in a small, autonomous scrum team building the engine that ingests, indexes and makes searchable massive volumes of financial transaction data in real time.This is hands-on backend engineering at scale. You'll design and build core features, optimise performance, and influence architectural decisions that directly impact global banks. If you enjoy solving hard data problems and care about writing clean, performant Java - you'll feel at home here. Java, Spring Boot, Elasticsearch, Gradle, Kubernetes/Helm. xjsrcvq Designing and building high-performance backend components in JavaReal-time ingestion and indexing of large-scale transaction dataWriting clean, well-tested, production-grade code Strong Java backend experience, building production systemsSolid understanding of software design principles and the ability to own technical decisions end-to-endExperience in fintech, regtech, or financial messagingExposure to high-volume, real-time data systems Your code ships to production at some of the world's largest banks - this isn't internal tooling that nobody noticesThe scale is real - real-time search across billions of financial messagesSmall team, high ownership - you shape technical decisions, not just execute ticketsModern delivery pipeline - GitHub Actions, ArgoCD, continuous delivery to soak testing instances - so you can ship with confidenceAI-augmented development - we use Claude Code as part of our daily workflow, so you spend more time on hard problems and less on routine workInternational, English-speaking engineering teamWe welcome applications from candidates who have the right to work in Belgium.