Frontend Engineer at Bjak | KOR | Rezi

Frontend Engineer at Bjak

Frontend Engineer

Bjak · KOR

1 weeks ago

Frontend Engineer

Bjak · KOR

13 days ago
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About the Role

ActAI is building proactive, AI-native applications for everyday users, focusing on seamless integration of intelligence into conversations, errands, organization, and workflows with minimal prompting. The Web Frontend Engineer will build core web experiences for applications like Chat, Notes, Calendar, Docs, and Sheets, owning complex product surfaces from architecture to implementation.

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.
  • Own frontend performance, responsiveness, reliability and accessibility across browsers and devices.
  • Work closely with product and design to take ideas from prototype to production quickly.

Requirements

  • Strong experience building complex, production web applications using React, TypeScript and modern frontend technologies.
  • Deep understanding of frontend architecture, state management, browser APIs, and performance.
  • 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.

Skills

  • React
  • TypeScript
  • Modern frontend technologies
  • Frontend architecture
  • State management
  • Browser APIs
  • Performance optimization
  • Real-time systems
  • WebSockets
  • Streaming APIs
  • Collaborative interfaces
  • Product judgment
  • UI judgment
  • Interaction details
  • Technical design
  • Next.js
  • HTML
  • CSS
  • Node.js
  • REST APIs
  • GraphQL APIs

Location

  • Virtual meetings
  • Onsite

Work Type

  • Full-time

Experience Level

  • Senior

About the Company

  • ActAI is building proactive applications for anyone in the world, aiming to bring intelligence to conversations, errands, organizing, and workflows with minimal to no prompting.
  • The company focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion.
  • ActAI believes products will greatly reduce hallucinations and aims to organize anyone's life.
  • The company operates with a high talent density and hands-on team, making decisions collectively and moving at rapid speed.
  • The goal is to ship high-quality work and learn, with a focus on bringing a truly magical product to users.