Platform Engineer, Core Services — Remote & Stock Options

OnePay; United States; Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Remote-friendly (US)

Stock options

Health benefits from Day 1

401(k) with company match

Growth opportunities

Job summary

OnePay is a consumer fintech trusted by millions of Americans to help them manage money more effectively. We are building an all-in-one financial services platform including banking, savings, cards, lending, investing, and crypto, with embedded services for employers and frontline workers.

As a Platform Engineer, you will design and operate core platform services for large-scale distributed systems, develop Kafka-based event streams, and create internal tooling to speed up engineering velocity

Qualifications

• 7+ years of experience in software engineering within fintech, cloud infrastructure, or large-scale distributed systems environments.
• Strong hands-on experience designing, operating, and scaling Kafka-based event-driven architectures.
• Deep expertise in distributed systems, asynchronous processing, and high-availability platform services.
• Production experience in AWS cloud environments and building cloud-native infrastructure.
• Experience building developer platforms, internal tooling, or frameworks that enable other engineers to move faster.
• Drive and proactivity - everyone here is a builder and executor.

Responsibilities

• Design and operate platform-oriented core services that support high-scale distributed systems across OnePay’s product ecosystem.
• Architect, build, and manage Kafka-based event streaming systems that power real-time data flows and mission-critical financial workflows.
• 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.
• Partner closely with engineering, data, and AI teams to solve complex distributed computing challenges in a secure, cloud-native AWS environment.

Skills

Distributed systems

Kafka

AWS

Developer tools

TypeScript

Node.js

React Native

Tools

Kubernetes

NestJS

Job description

OnePay is a consumer fintech trusted by millions of Americans to help them manage money more effectively. We are building an all-in-one financial services platform including banking, savings, cards, lending, investing, and crypto, with embedded services for employers and frontline workers.

As a Platform Engineer, you will design and operate core platform services for large-scale distributed systems, develop Kafka-based event streams, and create internal tooling to speed up engineering velocity