React Native Engineer, Core Banking

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 React Native Engineer on the Banking team at OnePay, you will build simple and beautiful mobile experiences for everyday money movement and account management that millions rely on.

What You’ll Do

• Ship high-quality features across iOS and Android for core banking journeys, including account funding, transfers, and card management.
• Collaborate with product, design, and backend partners to translate requirements into performant, reliable mobile interfaces with clear ownership from concept through release.
• Employ best practices in testing and CI/CD to deliver with quality and speed, including automated unit and integration tests and release process improvements.
• Improve mobile performance, accessibility, and resilience, instrumenting analytics and monitoring to ensure seamless experiences at scale.
• Contribute to our shared mobile platform by adopting design system components, navigation patterns, and developer tooling that enable consistency and velocity.

You Bring

• 5+ years of professional experience developing and deploying iOS and Android applications using React Native.
• Experience building secure, user-centric financial or payments experiences, with attention to precision in money movement, error handling, and compliance-friendly UX.
• Strong TypeScript and React expertise with proficiency in state management, networking, and native integrations; familiarity with GraphQL and React Navigation is a plus.
• Proven track record of collaboration, documentation, and ownership in fast-moving, cross-functional teams.
• Drive and proactivity – everyone here is a builder and executor.

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
• A high-growth, mission-driven, inclusive culture where your work has real impact

Standard Interview Process

• Initial Interview with Talent Partner
• Technical or Hiring Manager Interview
• Team Interview
• Executive Interview
• Offer!

Equal Employment Opportunity To build technology and products that are used and loved by people and solve real-world problems, we need to build a team with many different perspectives and experiences. We are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We encourage candidates from all backgrounds to apply. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us at talent@onepay.com.