About OnePay

OnePay is an all-in-one financial platform driven by a simple mission: better money makes life better.

Tens of millions of Americans today are unbanked or underbanked, meaning they don’t have enough money in savings to cover a minor emergency. They pay too much in fees, don’t have access to credit at affordable rates, and have little ability to grow their wealth. OnePay’s vision is to create a single app for consumers to save, spend, borrow, and grow their money, bringing our mission to life with simple and accessible banking, credit, and payments products that deliver a best-in-class experience to millions of customers. Our products include:

• Checking and high-yield savings accounts

• Domestic and international peer-to-peer payments

• Credit Builder and credit score monitoring

• Digital wallet / contactless payment solutions

• Credit card program

• Buy-now-pay-later installment loans at Walmart

• Prepaid mobile service

Why do we have a right to win? We have the backing of Walmart (a Fortune 1) and Ribbit Capital (a preeminent fintech investor), are deeply embedded with the distribution of the world’s largest omnichannel retailer, and have an industry-leading multi-product value proposition — all in addition to having some of the best people and talent in the industry.

There’s never been a better time to build a category-defining business and there has rarely been a team better positioned for the opportunity. Join us!

The Role

As a Full Stack Engineer on our Lending team, you will deliver highly complex projects at scale and shape the technical direction of lending products that reach millions of customers.

What You’ll Do

• Lead the design and delivery of high-impact, technically complex projects that power our lending platform at scale

• Provide technical leadership and clear, impactful communication to cross-functional stakeholders

• Drive hyper-optimization of lending systems to meet the needs of a large and growing addressable market

• Collaborate closely with product, design, and operations partners to build seamless, trustworthy lending experiences

• Mentor engineers across the team, fostering best practices in architecture, code quality, and scalability

You Bring

• Deep expertise in building and scaling distributed systems, high-throughput APIs, and data-intensive services

• Strong full-stack skills, with fluency in backend architecture and modern frontend frameworks

• Experience designing systems with reliability, security, and performance in mind — ideally in payments, lending, or other regulated consumer finance domains

• Exceptional technical leadership and communication skills with a track record of influencing architecture and product direction

• 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. While you don’t need experience with our exact stack, familiarity with modern software engineering practices will help you ramp up quickly.

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 [email protected].