Solution Architect (AI-native backend, FinTech) @ Unlimit

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.About the RoleUnlimit is undergoing a deep technology transformation. As a global fintech with a robust suite of products — including card acquiring, banking-as-a-service, payment gateways, crypto solutions, and wallets — we’re rebuilding our core backend platforms to be AI-native, modular, and cloud-agnostic.We’re seeking a forward-thinking and hands-on Solution Architect to lead this transformation from within. This is a strategic yet execution-driven role: you’ll help define and implement next-generation architecture that’s scalable, resilient, and designed with real-time AI capabilities. You’ll work at the intersection of architecture, infrastructure, and delivery, collaborating closely with Product, DevOps, Engineering, and Data teams. Your work will directly shape systems that serve thousands of merchants globally — with near-zero downtime, built-in observability, and seamless integration of AI agents into critical paths. This is a rare opportunity to join Unlimit at a pivotal point and define the future of financial infrastructure. What You’ll Be Doing Take ownership of solution design for backend systems powering payment products (card acquiring, wallets, crypto, BaaS).Design and maintain architecture that is AI-native and cloud-agnostic, aligned with modern security, scalability, and compliance standards.Partner with product managers, engineering leads, QA, and analysts to translate business needs into modular architectural designs.Build out documentation, high-level…

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