Demo

Senior or Staff Frontend Engineer / React / Remote

Motion Recruitment
San Francisco, CA Remote Full Time
POSTED ON 12/24/2025
AVAILABLE BEFORE 2/16/2026
A cutting-edge AI startup is reimagining how teams communicate using real-time AI companions, and we’re looking for a Senior or Staff Frontend Engineer (React) to lead development of our user-facing applications. This is a full-time, fully remote role focused on building intuitive, high-performance interfaces that showcase the power of modern AI in the workplace.

This is your chance to work on truly meaningful problems at the intersection of AI and human-computer interaction. You'll join a small, senior team building the core UI for our intelligent assistant platform, with an emphasis on real-time collaboration, streaming data visualization, and seamless ML integration. If you’re a frontend-focused engineer who thrives on crafting clean, scalable UI with real-world impact, this is your opportunity to shape the product, influence design systems, and grow into a technical leadership role. Required Skills & Experience

  • 6 years of software engineering experience, with at least 3 years building frontend applications in React typescript
  • Deep understanding of modern frontend architecture, state management, and component-based design
  • Experience working with real-time data (e.g., WebSockets, live feeds, collaborative UIs)
  • Strong eye for design detail and UX, with the ability to translate Figma or design specs into production code
  • Proficient with TypeScript, modern JS tooling (Webpack, Vite, etc.), and REST/GraphQL API integration

Desired Skills & Experience

  • Experience working on AI-powered products or interfaces that integrate ML outputs (e.g., assistants, chat UIs)
  • Familiarity with real-time messaging platforms, collaborative tools, or rich text editors
  • Exposure to data visualization libraries (e.g., D3, Recharts, Visx) and performance optimization techniques
  • Understanding of accessibility, cross-browser compatibility, and responsive design principles
  • Comfortable collaborating across backend, ML, and product teams in a fast-moving startup environment

What You Will Be Doing

Tech Breakdown

  • 80% React (TypeScript, Hooks, Next.js or similar)
  • 20% Real-time data integration, UX/Design collaboration, and performance tuning

Daily Responsibilities

  • 80% Hands-On Engineering (UI development, performance, code reviews)
  • 10% UI/UX Planning & Architecture
  • 10% Cross-functional Collaboration (with Design, Product, Backend, ML)

The Offer

  • Salary Equity

You will receive the following benefits:

  • Medical, Dental, and Vision Insurance
  • Unlimited Vacation Time
  • Remote-First Team with Flexible Hours

Applicants must be currently authorized to work in the U.S. on a full-time basis now and in the future.

Posted By: Tajee Mobley

Salary.com Estimation for Senior or Staff Frontend Engineer / React / Remote in San Francisco, CA
$143,828 to $168,356
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