Yihao Xia · Full-Stack Engineer

// TECH STACK

Full-Stack Developer@Chengdu Haiyi Interactive Entertainment Technology

Nov 2025 — Sep 2026

Core developer on the SeaWork app client (Expo mobile + Web), shipping session/timeline, search, and file preview
Built the SeaWork server daemon: agent turn lifecycle, session persistence, and offline history pagination
Delivered the end-to-end subscription monetization flow for the SeaArt app, and integrated Feed ads and video continuation into its creation flows

Front-End Developer@Shendeke Information Technology

Jan 2024 — Oct 2025

Built the "Amber High-Value User Card" Quick App desktop widget for OPPO Game Center from 0 to 1; no production defect reports since launch
Developed the operations admin console and H5 business pages; wrote Node.js packaging and release scripts to establish an automated build pipeline, filling the team's CI/CD gap

Front-End Developer@Sichuan Shuchan Fanshi (on-site assignment)

Sep 2023 — Dec 2023

Built the front end of a city-wide operations platform: dynamic/step forms, multi-level linked selects, and a spin-to-win widget; enabled cross-subdomain single sign-on via cookies scoped to a second-level domain

Front-End Developer@Sichuan Hailong Intelligent Manufacturing Technology

Feb 2023 — Jul 2023

Built B-side and C-side modules for the TeYouXuan e-commerce Mini Program; split packages by tab for on-demand loading, cutting the main bundle from 3.1 MB to 1.6 MB

Technician@Guangzhou Fuyao Glass

Apr 2021 — Feb 2022

SeaWork Apr 2026 — Sep 2026

TypeScript · React Native/Expo · Electron · Node.js

Built the session/timeline UI: drag-to-reorder, navigation, draft retention, delete-without-resurrection, and project pinning
Built session search: incremental indexing, cold-start index building, and highlighting — hot search over ~100 sessions cut from 3s to 2s; in-file search/preview and Markdown block copy
Moved Symphony (Issue → PR automation) from a standalone process into the daemon: Fastify + SQLite, /symphony HTTP/WS reverse proxy to bypass same-origin restrictions, GitHub PAT auth, all on a single Node runtime
Scheduled releases of RC and stable builds with auto-generated changelogs

SeaArt Nov 2025 — Apr 2026

TypeScript · React Native/Expo

AIGC entertainment community app; delivered the full subscription flow: subscription UI, VIP eligibility, repurchase prompts, and plan nudges for avatars, models, and apps
Rebuilt cold start (icon tap to first screen): async initialization, skeleton screens, home Feed data preloaded into the Store, startup telemetry and polling — 6.4s → 3.5s
Fixed scroll jank and video caching; tiered image format and autoplay by device performance; delivered Pad adaptation, l10n, and route-level lazy loading
Shipped video continuation (reference-, text-, and character-to-video), image LoRA and video model filters; integrated ads into the Feed and avatar Feed

Intuipay · Side / collaborative project (Web front end) Jun 2025 — Sep 2025

Next.js 15 App Router · TypeScript · better-auth · MDX Cloudflare Workers

An online platform for international university tuition and research donations; closed beta onboarded 20+ research projects

Owned the public project detail and certificate modules; independently built the Rewards tab, reward components, and certificate page, helping connect the browse → pick a reward → donate → share/claim certificate flow

Generated per-donor certificate OG/Twitter images dynamically with App Router generateMetadata and next/og; built X/LinkedIn/Facebook share flows whose copy automatically includes the donor's supporter number

Implemented route-level auth and unauthenticated redirects using better-auth with middleware-propagated identity; sanitized project rich text with isomorphic-dompurify allowlists

Guangzhou City University of TechnologyB.Eng. · Vehicle Engineering

Aug 2016 — Jul 2020