About Unlimit   Unlimit is the global fintech powerhouse behind the world’s largest proprietary payments infrastructure. Founded in 2009, Unlimit operates across 16 global offices with 700+ experts, seamlessly integrating 1,000+ payment methods into a single platform. From London to São Paulo, we empower businesses to scale across borders with a unified suite of financial tools — including payment processing, alternative payment methods, multicurrency business accounts, card issuing, banking-as-a-service, and crypto on- and off-ramps. Our mission is to break down financial barriers and enable seamless money movement across borders. We give forward-thinking businesses the tools to accept, send, and manage payments effortlessly, wherever they operate. We're looking for a detail-oriented and innovative AI QA Engineer to become a key guardian of quality for our mission-critical backend systems and intuitive UI interfaces that handle card transactions from initiation through completion. In this role, you won't just execute tests; you'll embed quality deeply into our payment infrastructure and user experience, ensuring reliability, accuracy, and compliance within our high-volume, cloud-native environment.