Backend Engineer, Crypto

OnePay is an all-in-one financial services platform (banking, high-yield savings, credit cards, POS lending, investing, and crypto), backed by Walmart and Ribbit Capital. On the Crypto team you'll help define how customers buy and hold digital assets safely within the financial ecosystem. Stack: Node.js / TypeScript / NestJS microservices on Kubernetes and AWS; React Native clients; AI-assisted development (Claude Code or Cursor). Чем предстоит заниматься: - Build and maintain infrastructure and backend services that enable crypto products - Design APIs and event-driven architectures to handle high-volume transaction processing securely and efficiently - Partner with platform and infrastructure engineers to ensure scalability, observability, and resilience - Contribute to documentation, tooling, and best practices across the engineering organization Наши пожелания к кандидатам: - 5+ years of professional experience in backend or distributed systems development - Experience with L2 blockchains, protocols and crypto infrastructure - Proven success building production-grade APIs and financial services at scale - Proficiency in Node.js or similar modern backend frameworks (TypeScript, NestJS, Go, or Java) - Familiarity with cloud-native architecture (Kubernetes, AWS) and event-driven or microservice-based systems - Strong communication and collaboration skills across product and platform teams