Skip to content
OnePayOnePay

Backend Engineer, Crypto

Builds and maintains backend services for crypto products, designs secure APIs and event-driven architectures for high-volume transactions, ensures scalability with platform teams. Requires 5+ years backend experience, L2 blockchains, Node.js or similar, cloud-native tech.

About the job

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
  • Experience with L2 blockchains
  • 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

Tools We Use

  • Node, TypeScript, NestJS framework
  • Microservice-oriented architecture on Kubernetes and AWS

What We Offer

  • 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

Skills

Node.js, TypeScript, Nestjs, Go, Java, Kubernetes, AWS, L2 Blockchains, APIs, Microservices

Crusoe

Crusoe

San Francisco, CA

Software Engineer II, Storage
$140k+/yrOn-siteBackend Engineering

Develop and operate scalable, fault-tolerant cloud storage infrastructure, contributing across the stack from bare metal to user-facing APIs. The role requires distributed infrastructure experience, software engineering expertise, and proficiency in Java or Go.

Scribe

Scribe

San Francisco, CA

Backend Engineer
$140k+/yrHybrid3+ YOEBackend Engineering

Build backend features and improve performance across document workflows, integrations, and greenfield projects in a Django-based platform. The role requires 3+ years of backend application experience, strong Python skills, and familiarity with testing, database optimization, and engineering best practices.

Reality Defender

Reality Defender

New York, NY

Software Engineer II
$140k+/yrRemote5+ YOEBackend Engineering

Develop Windows and .NET services powering Microsoft Teams bot applications with low-latency real-time audio and video. The role requires 3–5 years of software development experience, strong C#/.NET skills, Kubernetes operations expertise, and familiarity with media streaming and Microsoft APIs.

Upstart

Upstart

United States

Software Engineer, Cash Line
$136k+/yrRemote5+ YOEBackend Engineering

Build and operate backend services and APIs powering Cash Line lending experiences, including pricing, underwriting, funding, and account management. The role requires a bachelor's degree or equivalent experience, at least four years of professional software engineering experience, and proficiency with backend development.

PrizePicks

PrizePicks

United States

Software Engineer III
$145k+/yrRemote3+ YOEBackend Engineering

Build and scale Ruby on Rails backend services for rewards, incentives, and loyalty features in a high-throughput platform. The role owns complex feature delivery, contributes to architecture, mentors junior engineers, and requires 3+ years of professional software engineering experience.