name: deathemperor
location: Saigon, Vietnam
role: CTO / COO & Full-Stack Software Engineer
current: Building hyperscale insurance infrastructure at Papaya
scope: Every country. Every product. Every line of business.
focus:
- AI agent pipelines (claims, fraud detection, document extraction)
- Micro frontend architecture (React + Vite + Module Federation)
- GraphQL federation APIs (WunderGraph Cosmo + Hasura DDN)
- Multi-platform SDKs (Node, React, React Native, iOS, Android)
- Cloud infrastructure at scale (AWS, GCP, Pulumi)
- Observability (OpenTelemetry, Grafana, PostHog, Sentry)|
Languages
|
Frontend & Mobile
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Backend & Data
|
|
AI & Agents
|
Infrastructure
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Observability & IaC
|
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GraphQL Ecosystem
|
Testing
|
Tools
|
 |
Papaya — hyperscale insurance infrastructure platform |
| Domain | What |
|---|---|
| Frontend | Micro frontend architecture — React + Vite + Module Federation, multi-tenant, i18n (4 locales) |
| AI Agents | 37+ pipelines — claims processing, fraud/waste/abuse detection, document extraction, medical analysis |
| API | GraphQL federation — WunderGraph Cosmo gateway + Hasura DDN subgraphs |
| SDKs | 5 platforms — Node, React, React Native, iOS (Swift), Android (Kotlin) |
| Infrastructure | AWS (ECS, Lambda, RDS, CloudFront, S3, SES, SQS) + GCP (Vertex AI) — Pulumi IaC |
| Observability | OpenTelemetry + Grafana Faro + PostHog + Sentry |
| Auth | Passwordless — WebAuthn/passkeys + enterprise SSO (WorkOS) |
Active contributor to projects across the React, React Native, and GraphQL ecosystems:
 ant-design |
 gql.tada |
graphql-eslint |
 serverless-esbuild |
react-native-maps |
| FloatButton fixes | Type depth increase | Sort option | Dep exclusion | iOS nil guard |
|
react-component |
 sentry-react-native |
image-crop-picker |
hasura |
 uizaio |
| React 19 compat | RN compile fix | Camera fix | Inherited roles | Multi-region SDK |
