Backend Engineer, Crypto

Job not on LinkedIn

🕒 March 27

🇺🇸 United States – Remote

💵 $140k - $170k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🔙 Backend Engineer

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ONE

WebsiteLinkedInAll Job Openings

201 - 500 employees

💳 Fintech

Fintech

ONE is a financial technology company that focuses on providing innovative banking services through a mobile application. Although not a traditional bank, ONE offers various banking services in partnership with Coastal Community Bank. The company's offerings include cash back rewards, credit building tools, early direct deposit options, and high-yield savings accounts. ONE also features a digital wallet for shopping benefits, especially at Walmart. With an emphasis on user-friendly online banking, ONE aims to help customers take control of their credit, manage their finances, and earn rewards without the typical fees associated with traditional banks.

📋 Description

• 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

🏖️ Benefits

• Competitive base salary, stock options, and health benefits from Day 1 • 401(k) plan with company match • Remote-friendly (US), flexible time off (FTO), and opportunities for growth • A high-growth, mission-driven, inclusive culture where your work has real impact