Lead Software Engineer with 14+ years in software, 8+ in fintech: payments, FX and authorization. Polyglot engineer working across the stack, from microservices and fine-grained authorization to micro-frontends and design systems. I’ve been the architect, the team lead or the engineer, whichever the team needed, and I like owning systems end to end: API design and data modeling through CI/CD and observability.

For five years at Xendit I built a zero-downtime authorization service on OpenFGA that every product API depends on, a real-time transaction monitoring system, and the dashboard platform behind Xendit’s cross-border products across Southeast Asia.

You can also view my resume.

What I work with

Go TypeScript Java Python React Web Components Kafka PostgreSQL Redis OpenFGA Docker/K8s

Areas of focus

Payments & FX Distributed Systems Micro-Frontends Event-Driven Architecture DDD Fine-Grained Authorization Design Systems API Design Technical Leadership

Outside of work

Amateur photographer — mostly street, travel, and landscapes. You can see some of my shots on the photography page.

Get in touch

Find me on GitHub and LinkedIn, or drop me an email at kien@maneki.tech.