At ZERO ONE GROUP, I own backend architecture for a field-sales coaching platform serving Indonesia, the Philippines, and Malaysia. I designed its cell-based, multi-country setup and established an RFC and Architecture Decision Record practice to document key technical decisions.
I designed a CQRS and Event Sourcing tender-management application that reduced bid-evaluation read latency from about 1.2 seconds to under 150 milliseconds. I also engineered a double-entry financial ledger in Go and KurrentDB, with p99 balance reads under 20 milliseconds.
For the platform’s data and transaction workloads, I scaled a FinTech wallet and disbursement engine from about 100 TPS to 500+ TPS, and helped reduce PostgreSQL query latency by up to 85%. I also designed AWS lakehouse pipelines that reduced analytics freshness lag from 24 hours to 15 minutes.
Alongside my production work, I build self-directed distributed systems with Elixir and Erlang OTP. I’ve also delivered e-commerce, payroll, pharmaceutical distribution, ERP, and analytics systems, and built independent projects including a Go crowdfunding platform and event-driven data analytics services.
