React Native Mobile Developer

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.

Role

As a React Native Engineer at OnePay, you'll craft simple and elegant mobile experiences that play a central role in our customers' financial lives. Your primary focus will be on building robust, user-friendly features that enhance our app's functionality and impact. You will:

• Build and ship new product features and improve existing ones to directly support our customers’ financial journeys
• Employ best practices such as code reviews, automated testing, and continuous delivery on a modern React Native stack to achieve both quality and velocity
• Possess strong understanding of mobile performance optimization, including frame rate, rendering, and device resource constraints
• Partner with product managers, designers, and engineers to deliver product concepts and features from idea to launch
• Optimize app performance across devices and platforms, ensuring smooth and consistent user experiences
• Own your work from concept to launch, earning the trust of teammates through accountability and transparency

What You Bring

• 5+ years of professional experience building and deploying iOS and Android apps with React Native
• Experience building scalable, user-focused features for mobile applications
• Strong understanding of mobile performance optimization, including frame rate, rendering, and device resource constraints
• Passion for your craft and genuine care for teammates—quality in code, communication, and culture is non-negotiable
• Act-like-an-owner mentality: you proactively identify problems and drive them to resolution
• 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.
• On the client side, we build and ship product features for iOS, Android, and web platforms using React Native.
• We also embrace AI-assisted development, so engineers have their choice of Claude Code or Cursor to fit their workflow.

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

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.