Lin Zhangsheng

• Led core Web delivery for the Helix AI research collaboration platform (NewIdea writing workstation) from 0 to 1: task creation and management, step-based task flows, SSE real-time logs/stage updates, token usage dashboards, rich-text editing, review, and export — supporting both SaaS and AIO multi-site deployments.
• Drove frontend architecture and engineering: unified API layer with auth refresh, runtime environment injection, Docker orchestration, Plate/Slate editor pluginization (Diff, Mermaid, tables, serialization), and performance optimization; led code reviews, troubleshooting, and internal knowledge sharing.

• Participated in product requirements analysis and architecture design, translating complex business needs into scalable technical solutions and shipping multiple projects from concept to production within 3 months.
• Led frontend technology selection and framework setup, improving page load speed by 35% and achieving 98% design fidelity.
• Collaborated with backend teams on system modeling and high-availability API development, reducing system failure rate by 45% and maintaining 99.9%+ service stability.
• Core contributor to a Slate.js-based rich-text editor, improving editing performance by 20% and strengthening product competitiveness.

• Developed Web-based frontend pages for the MES system.
• Performed secondary development on Siemens OpCenter EXPR based on business requirements.
• Owned module-level development, debugging, and maintenance.

• Built ToB admin systems using Vue 3, TypeScript, Element Plus, and ECharts for complex data visualization and permission configuration.
• Implemented features from prototypes and resolved complex permission configuration challenges.

AI-powered research and writing workstation: create and manage AI writing tasks, view real-time execution logs and dashboards, edit/review/export in a rich-text environment; supports SaaS and on-premise multi-site deployments.

Next.js 14 (App Router), React 18, TypeScript, Tailwind CSS, Zustand/Immer, umi-request, SSE, Plate (Slate) editor, Chart.js, Zod/TanStack Form, pnpm, biome/Husky.

• Built core business pages: task list/pagination, task detail step flows, dashboards, and token usage with optimized data fetching, state sync, and interaction (visibility-based refresh, debouncing).
• Designed unified API layer: umi-request prefix, Bearer auth, 401/token refresh via @helix/helix-token-manager, business error routing, and i18n error messages.
• Implemented streaming AI output and task logs via SSE, with Streamdown + Markdown for incremental rendering and Safari compatibility.
• Complex multi-type task forms with field dependencies, validation hooks, and conditional rendering.
• Plate plugin system for Diff, Mermaid, tables, and serialization — supporting long-document editing, comparison, and export.

Vertical AI collaboration platform for medical and research workflows. Integrates Dify orchestration and CopilotKit tool-calling to expose page capabilities to AI assistants — covering literature analysis, academic writing, and grant proposal assistance.

Next.js, React, Tailwind CSS, Dify, Docker, CopilotKit

• Maintained and extended writing workbench pages, reusing one codebase across a dozen deployed writing scenarios.
• Architected "AI Agent + immersive workbench" integration, shortening core writing cycles from weeks to hours.
• Customized Platejs research editor with AI text selection, revision mode, and smart reminders; solved atomic incremental rendering for conflict-free AI/human content merging, improving grant proposal output efficiency by 70%.

Enterprise intelligent writing editor built on React and SlateJS. Monorepo architecture with pnpm workspaces for modular, extensible document editing.

React, TypeScript, SlateJS, Vite, pnpm

• Extended SlateJS with configurable core editor and plugin architecture; optimized large-document editing performance.
• Built collaborative editing with Slate.js + Yjs and Hocuspocus for real-time sync and persistence.
• Developed term data processing, multi-format export (Word, plain text), and ECharts chart generation.
• TypeScript type-safe development with comprehensive unit tests and modular code organization.