Senior Frontend Developer

NorthBay is seeking a Senior Front-End Engineer with deep expertise in JavaScript and modern front-end frameworks including React, Vue.js (Nuxt3), Next.js, and Svelte. The role involves building high-performance, responsive interfaces for AI-driven platforms, focusing on clean design, maintainability, and seamless user experience. Familiarity with Nest.js for backend integration and Lit.js for reusable web components is a strong plus. Experience working with AI interface platforms (e.g., OpenWebUI) is highly desirable.

• Lead the development of scalable and dynamic front-end applications using React, Vue.js (Nuxt3), Next.js, Svelte, and TypeScript.

• Build reusable components and design systems, including lightweight Lit.js web components.

• Optimize front-end performance through SSR, code splitting, lazy loading, hydration, and runtime optimization.

• Collaborate closely with ML engineers, backend developers, and designers to deliver intuitive, AI-powered user experiences.

• Work with state management libraries like Redux, Vuex, Pinia, or Svelte Stores.

• Build accessible and responsive applications that are cross-browser and cross-device compatible.

• Contribute to testing, documentation, and CI/CD automation to maintain high code quality.

• Participate in architectural discussions, code reviews, and mentor junior front-end engineers.

• 5+ years of front-end development experience with strong command over JavaScript and TypeScript.

• Deep expertise in React, Vue.js (Nuxt3), Next.js, and Svelte.

• Strong knowledge of responsive design, accessibility (WCAG), and front-end performance optimization.

• Experience with Lit.js for building modular and reusable UI components.

• Familiarity with Git workflows, modern CI/CD pipelines, and build tools like Vite, Webpack, or Rollup.

• Experience designing user interfaces for AI/LLM platforms, AI chat UIs, or output visualizations.

• Hands-on knowledge of OpenWebUI or similar LLM-based interface platforms.

• Integration experience with AI APIs (OpenAI, Hugging Face, Cohere) and handling real-time model output.

• Familiarity with Transformers.js, LangChain.js, WebLLM, or token-based interaction flows.

• Experience with web-based data visualization (D3.js, Chart.js, Recharts, or Plotly).

• Understanding of prompt chaining, model latency, and front-end considerations for AI workflows.