Platform Engineer, Core Services

The role

You will build core platform services and developer frameworks for large-scale distributed systems. You will design Kafka-based event streaming systems and develop internal developer tooling.

What you will do

• Design and operate platform-oriented core services for high-scale distributed systems
• Architect, build, and manage Kafka-based event streaming systems
• Develop internal developer tooling and shared infrastructure
• Build and evolve frameworks for agentic applications
• Partner with engineering, data, and AI teams to solve distributed computing challenges in AWS

Required 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

Nice to have

• Familiarity with modern software engineering practices

Benefits

• Competitive base salary
• Stock options
• Health benefits from Day 1
• 401(k) plan with company match
• Flexible time off (FTO)

Before you apply

• AI-assisted initial screen
• Interview with Talent Partner
• Technical or Hiring Manager Interview
• Team Interview
• Executive Interview

About the company

OnePay is a consumer fintech that provides an all-in-one financial services platform including banking, savings, credit cards, investing, and crypto. It is backed by Walmart and Ribbit Capital.