Ratela, Dagit, Incheon Heroes, Voice Korea

Built backends in Rust with Axum for four shipped products, exposing REST and WebSocket APIs to Dioxus frontends.

Modeled multi-tenant PostgreSQL schemas covering user workflows, property hierarchies, and access control for both signed-in and anonymous sessions.

Wired up AWS (S3, RDS, Lambda, CloudFront) for the cloud side of each deployment.

Integrated Kaia Wallet into Incheon Heroes — middleware in Axum for blockchain identity checks and transactions.

Built a small key-value graph engine so Ratela's support pipeline could change its content model without a migration every time.

Wrote performance tests for Voice Korea with Playwright and some custom benchmarking to check latency under load.

Set up GitHub Actions for CI/CD to AWS, including rollbacks.