Backend Engineer- Crypto

OnePay is a consumer fintech company trusted by millions of Americans to improve their financial experience. They are seeking a Backend Engineer for their Crypto Team to build and maintain backend services that enable their crypto product, ensuring secure and efficient transaction processing.

Responsibilities:

• Build and maintain backend services that enable our crypto product
• 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 that raise the bar across our engineering organization

Requirements:

• 5+ years of professional experience in backend or distributed systems development
• 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
• Drive and proactivity – everyone here is a builder and executor