UQPAY Launches Fiat-Stablecoin Bridge
Fintech firm UQPAY has launched a full-stack payment infrastructure designed to bridge traditional fiat and stablecoin transactions. The Singapore-based company's platform unifies global acquiring, card issuing, and stablecoin accounts into a single ecosystem, aiming to simplify global commerce for businesses operating with both currency types.
The platform's "dual-rail" system refers to its technical integration of traditional payment networks like SWIFT and card schemes with multi-chain blockchain infrastructure for stablecoin transactions. This allows for settlement in both fiat and crypto within a single operational framework, accessible via one API integration. A recent job posting for a Golang Engineer reveals UQPAY's tech stack includes Go, the Gin framework, and gRPC for building a scalable microservices architecture. The role also requires proficiency with MySQL clusters, Kafka or RabbitMQ for messaging, and Redis for caching, indicating a focus on high-concurrency and event-driven systems. The company's stablecoin infrastructure is designed to be "commercial-grade," supporting regulated stablecoins such as USDC, USDT, and XUSD. It is also built to be compatible with the Universal Commerce Protocol (UCP) and the AI-native x402 payment protocol, targeting use cases like AI-initiated autonomous transactions and machine-to-machine payments. Technically, the platform utilizes a UCP-based asynchronous, event-driven architecture. This system relies on Webhook subscriptions for distributing transaction status updates, a design choice that supports horizontal scaling and is engineered to handle high-frequency calls, such as those from AI agents. UQPAY's founder and CEO, Jack Li (also known as Li Wangjian), is a graduate of Zhejiang University's Department of Computer Science and Technology. He has been described as an early Bitcoin participant and blockchain angel investor, which provides context for the company's focus on bridging traditional finance with digital assets. The company's GitHub repositories show public SDKs for Go and PHP, along with a Postman collection for its public APIs, which cover payments, issuing, and conversions. This points to a developer-centric approach, allowing engineers to integrate with their systems for various financial operations. Targeted industries for this new infrastructure include cross-border e-commerce, SaaS and subscription platforms, gaming, and Web3-native companies. UQPAY provides self-service onboarding for startups and growth-stage companies, with more tailored integration support for enterprise clients.
