Platform Engineer, Builder Experience
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 grow your money. We’re fixing it by building 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 partner with employers, HCM providers, gig platforms, and others to deliver embedded financial services to millions of employees and frontline workers. Backed by Walmart and Ribbit Capital, we’re moving fast to build something truly category-defining.
What sets OnePay apart is how we move: fast, hungry, and driven by urgency. We’re looking for people who are exceptional at what they do, comfortable operating in motion, and ready to run.
Responsibilities
- Design and operate platform-oriented core services that support high-scale distributed systems across OnePay’s product ecosystem
- Develop internal developer tooling and shared infrastructure that improve velocity, reliability, and observability across engineering teams
- Build and evolve frameworks that support the construction and orchestration of agentic applications, enabling intelligent, automated workflows across products
- Drive enhancements in CI/CD pipelines, automation, and developer workflows to increase deployment speed, reliability, and confidence across teams
Requirements
- 2-9 years of experience in software engineering within fintech, cloud infrastructure, or large-scale distributed systems environments
- Experience building developer platforms, internal tooling, or frameworks that enable other engineers to move faster
- Deep expertise in distributed systems, asynchronous processing, and high-availability platform services
- Production experience in AWS cloud environments and building cloud-native infrastructure
- Demonstrated experience designing and building agentic developer tools that empower automation, collaboration, or intelligent workflows
- Strong experience working with CI/CD pipelines and driving continuous integration and delivery improvements
- Drive and proactivity—everyone here is a builder and executor