Frontend Developer

Key Responsibilities

• Implement responsive, high-performance user interfaces using React, TypeScript, and modern front-end tooling.

• Develop and maintain front-end applications, including low-code or visualization platforms, AI portals, and document authoring tools.

• Integrate REST APIs, WebSockets, and SSE for real-time data updates and live dashboards.

• Optimize front-end performance for large-scale data rendering (e.g., 10,000+ live-updating data points).

• Provide production support, debugging, and hotfixes for deployed applications.

• Write and maintain technical documentation for components, frameworks, and integration patterns.

• Collaborate with back-end and AI/ML teams to integrate LLMs, RAG pipelines, and agent workflows into front-end experiences.

• Build or extend hybrid mobile applications (Cordova-based) and Office.js add-ins as needed.

• Maintain and improve shared component libraries and reusable widget frameworks.

Required Qualifications

• 5+ years of front-end development experience, with at least 2 years in a technical leadership or senior individual contributor role.

• Expert-level proficiency in React, TypeScript, and Node.js.

• Strong experience with data visualization libraries (ECharts, D3.js, Three.js, Leaflet).

• Proven experience building AI-integrated front-end applications (LLMs, RAG, AI agents, LangChain/LangGraph, AG-UI).

• Experience developing hybrid mobile frameworks (Apache Cordova) and deploying to iOS/Android.

• Hands-on experience with Office.js (e.g., Word Add-ins for AI-assisted authoring).

• Strong understanding of API integration (REST, WebSockets, SSE, OAuth 2.0).

• Ability to optimize rendering performance under real-time, high-data-volume conditions.

• Experience writing technical documentation and supporting production systems.

• Familiarity with CI/CD pipelines, Docker, and cloud platforms (Alibaba Cloud, Azure).

Preferred Qualifications

• Experience building low-code or drag-and-drop visualization platforms.

• Background in IoT or AIoT platforms with large-scale device management.

• Knowledge of LangGraph, MCP servers, or Claude Skills.

• Experience with Java (Spring) or Python for basic back-end understanding.

• Startup or founding experience (CTO or co-founder level) is a plus.