Selected Projects (Since 2018)
A snapshot across sectors. Brand names indicate client context.
Fivecircles Tech Inc
Fivecircles Tech Inc
A snapshot across sectors. Brand names indicate client context.
Government Modernization
Infrastructure upgrade, legacy system migration, and targeted rewrites to improve reliability, security, and maintainability—while respecting privacy, auditability, and uptime requirements.
Manufacture Parts Tracing System
QR code scanner + Siemens PLC integration to guarantee workflow-driven traceability across stations with full audit history.
Unified Customer Analytics Result (UCAR)
REST API serving subscriber billing by cycle with partial-data streaming via custom events to prevent memory leaks. Backward-compatible API versioning.
Realtime UCAR
Architecture and data pipelines for near real-time account analytics; low-latency API surfaces with freshness/availability SLIs.
Rx Claim Engine
NCPDP D.0 adjudication handling ~1M tx/day at <500ms p95 with 99.999% uptime. Horizontally scalable for Medicaid/Medicare and commercial LOBs.
Rx Claim Reprocessing
CLEAN Architecture & SOLID principles for batch reprocessing with self-healing workers and unlimited horizontal scale.
Distributed Ad Provider
OpenRTB bidder processing ~6B tx/day with 99.99% uptime across tier-1 properties.
Finance Breaking News & Stock Info
Near real-time market news aggregation and delivery from Wall Street and other sources for investors.
Cryptocurrency Exchange White Label
Led 9 backend engineers to customize wallet, signing, risk, asset, and user modules across multiple deployments.
NFT Metadata Service
Microservice REST API resolving NFT metadata by keyword and contract address with high-throughput lookups.