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NEXTMOVEFDE careers · United States
ONE Finance

Software Engineer, Risk

AI summary of the role

Backend engineer on the Risk team at OnePay (One Finance), building resilient services for fraud detection, identity verification, and transaction monitoring at scale.

What you’ll do

  • Build resilient backend services powering fraud detection, identity verification, and transaction monitoring at scale.
  • Develop, test, and maintain backend services and APIs for real-time risk and fraud prevention.
  • Partner with product managers and engineers to design and deploy systems protecting customer accounts and transactions.
  • Implement integrations with third-party risk and compliance platforms ensuring secure data flows.

What you’ll bring

  • 3+ years professional backend engineering experience, ideally in fintech, payments, or external customer-facing systems.
  • Proficiency in building and maintaining APIs, microservices, and distributed systems.
  • Familiarity with cloud infrastructure (AWS, Kubernetes, or similar) and database technologies.
  • Experience with risk, fraud, or compliance systems is a plus.

Technologies

Node · TypeScript · NestJS · Kubernetes · AWS · React Native · Claude Code · Cursor · microservices · fraud detection · identity verification · transaction monitoring

About ONE Finance

Operating as OnePay, Walmart/Ribbit-backed fintech bundles banking, credit, BNPL, investing, crypto, wallet, and workplace financial wellness for U.S. shoppers and workers.

Private Late · 500–1000 people

Source and classification

Internal deployment & tooling · Evidence for this classification:

we. This place moves fast, and we’re looking for people who are: Ready to run Hungry and driven by urgency Exceptional at what they do, with low ego Comfortable operating in motion The Role As a Software Engineer on the Risk team, your work will directly impact the systems that protect our customers and company. You will: Build resilient backend services that power fraud detection, identity verification, and transaction monitoring at scale. Develop, test, and maintain backend services and APIs that enable real-time risk and fraud prevention. Partner with product managers, and other engineers to design and deploy systems that protect customer accounts and transactions. Implement integrations with third-party risk and compliance platforms, ensuring seamless and secure data flows. Contribute to architectural decisions that balance scale, security, and reliability across
More from the job description

About OnePay OnePay is the consumer fintech trusted by millions of Americans to make money better. Our financial system is broken. High fees, low rates, and too few ways to actually grow your money. We’re fixing it. And we’re moving fast. We’re an all-in-one financial services platform that brings together banking, high-yield savings, credit cards, point-of-sale lending, investing, and crypto in one place. We also partner with employers, HCM providers, gig platforms, and others to deliver embedded financial services to millions of employees and frontline workers. We’re backed by Walmart, the world’s largest retailer, and Ribbit Capital, one of fintech’s most respected investors, giving us rare scale, distribution, and the opportunity to build something truly category-defining. But what really sets OnePay apart is how we move. Our customers don’t have time to wait… and neither do we. This place moves fast, and we’re looking for people who are: Ready to run Hungry and driven by urgency Exceptional at what they do, with low ego Comfortable operating in motion The Role As a Software Engineer on the Risk team, your work will directly impact the systems that protect our customers and company. You will: Build resilient backend services that power fraud detection, identity verification, and transaction monitoring at scale. Develop, test, and maintain backend services and A [... source excerpt omitted ...] port collaboration, transparency, and operational excellence. You Bring 3+ years of professional experience in backend engineering, ideally within fintech, payments, or external customer facing systems. Proficiency in building and maintaining APIs, microservices, and distributed systems. Familiarity with cloud infrastructure (AWS, Kubernetes, or similar) and database technologies. Experience working with risk, fraud, or compliance systems is a plus. Drive and proactivity – everyone here is a builder and executor. Tools We Use We use Node and TypeScript on the server, leveraging the NestJS framework within a microservice-oriented architecture running on Kubernetes and AWS.

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