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Software Engineer, DesktopBJAK · United Kingdom
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BJAK

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Software Engineer, Desktop

🗓️ Posted 2026-10-07 United Kingdom Fulltime Hybrid ICT
💰 Salary Not shared 📊 Market 3,750 GBP–6,250 GBP/mo

About the Company

ABOUT ACTAI There are over 5 billion users using basic applications today such email, notes, tasks, calendar and they're not AI-native. Our mission is to build proactive applications for anyone in the world, who are not used to complex prompting. We aim to bring intelligence to conversations, errands, organising and workflows, with minimal to no prompting. Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. We believe products will greatly reduce hallucinations. Our objective is to organise anyone's life, allowing us all to spend time on valuable and meaningful things. ROLE

Responsibilities

  • ● on reliability, performance, and real-time behavior in production desktop applications.
  • ● Build and maintain cross-platform desktop applications using Electron.
  • ● Design responsive and scalable UIs for real-time collaboration.
  • ● Implement desktop-specific functionality including file system access, native notifications, auto-updates, and deep linking.
  • ● Integrate AI-powered features (chat, agents, AI assistance) via backend APIs.
  • ● Optimize startup time, memory usage, and runtime performance.
  • ● Profile and reduce Electron overhead.
  • ● Manage large local state and message history efficiently.
  • ● Ensure smooth real-time updates (messages, typing indicators, presence).
  • ● Maintain stability across macOS and Windows environments.
  • ● IDEAL EXPERIENCES
  • ● Proven software engineering experience.
  • ● Hands-on experience building production Electron applications.
  • ● Strong proficiency in JavaScript and TypeScript.
  • ● Solid understanding of the desktop application lifecycle.
  • ● Strong debugging and performance profiling skills.
  • ● Familiarity with native OS behaviors on macOS or Windows.
  • ● The best products today in the world were built by small, world class teams. We are a high talent density and hands-on team. We make decisions collectively, move at rapid speed, striking a balance between shipping high quality work and learning. Joining our team requires the ability to bring structure, exercise judgment, and execute independently. Our goal is to put in hands of our users a truly magical product
  • ● INTERVIEW PROCESS
  • ● If there appears to be a fit, we'll reach to schedule 3, but no more than 4 interviews.