Jonathan User

I am a senior full-stack engineer with 10 years of experience building and scaling high-volume platforms at Stripe and GoDaddy, focused on payments, fraud prevention, and e-commerce. I design and implement resilient backend systems using Go, Ruby on Rails, and cloud-native infrastructure while also contributing to React-based frontends and internal ML/LLM tooling.

At Stripe I architected and optimized services for the Payments API and Radar fraud platform, building high-throughput microservices with gRPC, Kubernetes, MySQL, Redis, and observability tooling to support hundreds of millions of daily requests and trillions in annual volume. At GoDaddy I led core e-commerce platform development, created SPA experiences with React/TypeScript, and implemented reliable payment orchestration across gateways.

I mentor engineers, champion API design and observability, and drive cross-functional integrations (tax, billing, analytics) to deliver global launches. I emphasize scalable architecture, automated CI/CD and IaC, and pragmatic product-focused engineering.