Frontend Engineer: Real-Time AI-Driven Web Apps

Worky; Ireland (MS); On-site; USD 120,000 - 150,000; 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 features from architecture through implementation, working with product, design, backend and AI engineers to make AI a native part of how users communicate, write and organise.

You will focus on real-time interactions, performance, accessibility and maintainable frontend architecture to deliver fast, reliable user experiences across devices and browsers.

Qualifications

• Experience building production web apps with React and TypeScript.
• Strong understanding of frontend architecture, state management, browser APIs, and performance.
• Experience building highly interactive products such as chat, collaboration, productivity, calendars, or workspaces.
• Experience with real-time systems, WebSockets, streaming APIs, or collaborative interfaces.

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 across ActAI applications.
• Integrate streaming AI responses and model-driven experiences into product workflows.
• Own frontend performance, accessibility, and reliability across browsers and devices.
• Collaborate with product and design to move ideas from prototype to production quickly.

Skills

React

TypeScript

Frontend architecture

Real-time collaboration

WebSockets

UI/UX

Tools

REST/GraphQL

Job description

ActAI is seeking a Web Frontend Engineer to build core web experiences across Chat, Notes, Calendar, Docs and Sheets. You will own features from architecture through implementation, working with product, design, backend and AI engineers to make AI a native part of how users communicate, write and organise.

You will focus on real-time interactions, performance, accessibility and maintainable frontend architecture to deliver fast, reliable user experiences across devices and browsers.