Software Engineer, Banking

United States (Remote)full timeRemote

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senior

$150k–$220k

H1B: no

Oneapp Software Engineer at OnePay leads technical design and delivery of scalable banking features supporting real-time money movement. This role sets architectural standards and mentors engineers while collaborating with product, design, risk, and compliance teams.

Responsibilities

As a Software Engineer on the Banking team at OnePay, your work will have a direct impact on how people access, move, and manage their money, driving everything from the design of scalable banking services to the reliability of real-time money movement that help our customers trust us with their finances. You will:
Lead technical design and delivery of banking features that scale with our growing customer base and support a seamless mobile experience
Set architectural standards and best practices for code quality, performance, security, and reliability across our banking services
Own the technical approach to complex challenges at scale, including sensitive financial data and real-time money movement
Mentor and grow engineers through design reviews, code reviews, and hands-on collaboration on tough problems
Partner closely with product, design, risk, and compliance to shape the roadmap and turn it into high-quality, shipped software
Create and maintain clear documentation, a must-have for a growing, remote organization

Qualification

Proven success designingProficiency in NodeWe use Typescript front to back

Required

7+ years of professional experience in backend or full-stack software engineering, including technical leadership of projects or teams
Proven success designing, building, and scaling production-grade APIs and distributed systems, ideally in banking, payments, or other regulated financial services
Experience with sensitive financial data and money movement systems, such as ledgers, account management, ACH, or card processing
Proficiency in Node.js and TypeScript or similar modern backend frameworks, and familiarity with microservices, Kubernetes, and AWS
Experience with mobile or user-facing applications, ideally React Native, is a plus
Strong communication and collaboration skills, with a track record of mentoring engineers and driving technical decisions across teams
Drive and proactivity - everyone here is a builder and executor
We use Typescript front to back, with node and NestJS frameworks for server code and React Native for our iOS, Android, and Web clients. We run on a highly distributed cloud-native stack with Kubernetes and AWS, and scale and resiliency are at the heart of everything we build. We also embrace agentic development, so engineers have their choice of a variety of models and agent harnesses, including Claude Code, Cursor, Codex, and more to fit their workflow. While you don't need experience with our exact stack, familiarity with modern software engineering practices will help you ramp up quickly.

Preferred

Experience with mobile or user-facing applications, ideally React Native

Benefits

401(k)
Equity/RSU

Company

Oneapp

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Source: ashby

Active within the past hour

Remote-friendly

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Must-Have Skills for This Role

Node.jsTypeScriptmicroservicesKubernetesAWSReact Native

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Software Engineer, Banking at Oneapp · LumiJobs