Frontend Engineer for Real-Time AI Web Apps

ActAI; New York (NY); On-site; USD 120,000 - 180,000; Full time

Job summary

ActAI is seeking a Web Frontend Engineer to build core web experiences across Chat, Notes, Calendar, Docs and Sheets. You will own complex, highly interactive surfaces from architecture through implementation, collaborating with product, design, backend and AI engineers to make AI a native part of user workflows.

You will develop major web experiences, enable real-time messaging, collaborative editing, rich-text editing, scheduling and spreadsheets, and build reusable frontend architecture used

Qualifications

• Strong experience building complex, production web applications using React, TypeScript and modern frontend technologies.
• Experience building highly interactive products such as chat, collaboration, productivity, document editing, calendars, or workspaces.
• Experience with real-time systems, WebSockets, streaming APIs, or collaborative interfaces.
• Strong product and UI judgment with attention to interaction details.
• Able to independently own features from technical design through production.

Responsibilities

• Build major web experiences across Chat, Notes, Calendar, Docs, and Sheets.
• Develop complex interactions including real-time messaging, collaborative editing, rich-text editing, scheduling, tables, and spreadsheets.
• Build reusable frontend architecture and components that work consistently across ActAI applications.
• Integrate streaming AI responses, proactive actions, and model-driven experiences directly into product workflows.
• Work closely with product and design to take ideas from prototype to production quickly.

Skills

React

TypeScript

Next.js

WebSockets

REST / GraphQL

HTML / CSS

Tools

Real-time collaboration

Job description

ActAI is seeking a Web Frontend Engineer to build core web experiences across Chat, Notes, Calendar, Docs and Sheets. You will own complex, highly interactive surfaces from architecture through implementation, collaborating with product, design, backend and AI engineers to make AI a native part of user workflows.

You will develop major web experiences, enable real-time messaging, collaborative editing, rich-text editing, scheduling and spreadsheets, and build reusable frontend architecture used