Senior Software Engineer (Backend): Fiat Integrations

About us: BVNK is the stablecoin-powered financial stack for enterprises. We're now part of Mastercard, and together we're building a network for every form of money – one that delivers more reach, more capability and more choice. We enable businesses to build financial products, unlock new markets, and move money in seconds across 130+ countries, with 40+ licenses for fiat and digital assets globally. Processing billions annually, we empower enterprises worldwide to send, receive, convert, and settle stablecoins and fiat seamlessly through a single integration. Our mission is to accelerate global money movement, and we're assembling a world-class team to make it happen. Trusted by industry leaders like Corpay, Worldpay, Deel, and Flywire, we deliver the infrastructure that makes new forms of money usable within the financial systems customers already rely on today. By combining Mastercard's global payment reach and trusted networks with BVNK's stablecoin infrastructure, we're building the trusted operating layer for the evolution of money movement, helping customers participate in emerging digital networks without having to rebuild their businesses around every new innovation. We're a diverse team spread across EMEA, North America, and APAC, with a shared belief that stablecoins are the new infrastructure layer for financial services, and that BVNK is at the forefront of this shift. We're incredibly honored to have been recognized by: CNBC World's Top Fintech Companies (2026) FXC Intelligence Top 100 Cross-border Payment Companies (2026) Newsweek's The Top 100 Global Most Loved Workplaces (three years running, most recently 2025) LinkedIn as one of the Top 20 Startups in the UK (2025) Location: We offer a Hybrid/Remote working policy. About this role in the team: The Fiat Orchestration subdomain sits within BVNK's Core Banking domain and is responsible for the reliable, scalable processing of fiat currency transactions across multiple banking rails and payment networks. It ensures that every fiat payment; whether an inbound deposit, outbound settlement, or cross-border transfer, is executed accurately, reconciled, and delivered on time. Our product and engineering organisation is split into small autonomous squads empowered to own their problem space. As a Senior Software Engineer in the Fiat Orchestration squad, you'll design and build the backend systems that power the movement of fiat currency through BVNK's platform. You'll work on services that orchestrate payment instructions, interface with banking partners and payment schemes, manage transaction lifecycle states, and ensure settlement integrity at scale. You'll be expected to form strong opinions and execute in a fast but sustainable way, advocating for the simplest solution that achieves the outcomes our customers are looking for. Key Areas of Responsibilities: Design, develop, and maintain high-performance backend services that power fiat payment processing, including transaction orchestration, settlement, and reconciliation. Build and evolve integrations with banking partners, payment networks, and financial infrastructure to support multi-rail, multi-currency fiat operations. Contribute to the architecture and evolution of the fiat processing platform, ensuring reliability, fault tolerance, and data consistency across high-throughput transaction flows. Build and maintain APIs that manage the full transaction lifecycle — initiation, status tracking, settlement confirmation, and exception handling — consumed by teams across the platform. Drive improvements to system observability, performance, and resilience, including monitoring, alerting, and incident response. Collaborate closely with cross-functional partners including product, design, and other engineering squads to deliver high-impact features. Participate in code reviews, architectural discussions, and technical design sessions to uphold engineering standards. Contribute to the team's engineering culture by…