Jason open5588

Jason (`@open5588`)

Full-Stack, Systems & Workflow Automation Engineer based in Taiwan (UTC+8).

Portfolio: https://utils-keno-instrument-involved.trycloudflare.com/portfolio.html
Upwork: https://www.upwork.com/freelancers/~0159c00273dd3bd644
Contact: open5588@gmail.com

CelerCam (celercam.com) — Low-latency smartphone-to-OBS camera app on Google Play (app.celercam) and iOS, paired with native Windows (.msi/.dll) and macOS (.dmg) OBS plugins over a custom FVEA binary streaming protocol.
CelerCast (celercast.celercam.com) — Local-network multi-room audio/video broadcast system and device console for macOS (.dmg) and Windows (.msi).
Skywave (skywavedesk.com) — Cross-platform remote desktop client, host agent, and relay service for macOS, Windows, iOS, and Android.
Osprey (osprey-sms.pages.dev) — Self-hosted Android SMS and call gateway with webhook routing and Dockerized backend (open5588/Osprey).
Mobile Apps & Games:
- Spirit Island Defense (spiritisland.urhand.net) — Published on the iOS App Store (id6800583840).
- Cat Move (catmove.urhand.net) — Puzzle game for iOS and Android.
- BrainBridge (brainbridge.urhand.net) — Cross-platform cognitive training app built with Flutter.

Permit.io (permitio/opal#970): OpenFGA policy store backend, tuple/model sync, and transaction support in Python/FastAPI.
Onyx (onyx-dot-app/onyx#16064): Jira Service Management (JSM) RAG connector with checkpointed indexing in Python.
Gyroflow (gyroflow/gyroflow#1258): Rust camera/mount/lens registry, LensFun XML parser, and Qt/QML UI integration.
Dozer (getdozer/dozer#2531, #2532, #2533): Streaming SQL IN subquery evaluation and Wasmtime scalar UDF runtime in Rust.
Spectral Finance (Spectral-Finance/lux#990–995): EVM HD wallet signing, EIP-1559 gas management, and SIWE (EIP-4361) authentication in Elixir.
Kerneta (Kerneta/daidocs#73): Anthropic ephemeral prompt caching (cache_control) and token budget tracking in TypeScript.
ZIO (zio/zio#11285): ZIO.timeoutTo synchronous fast-path optimization in Scala.
Aeternity (mradkov/vscode-sophia#13): Sophia v6.1.0+ smart contract syntax grammar and GitHub Linguist integration.