Software Engineer, Desktop

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
You will own how this system behaves on desktop environments. Your work focuses on reliability, performance, and real-time behavior in production desktop applications.

Focus

• 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.

• Experience with React or similar UI frameworks.

• Solid understanding of the desktop application lifecycle.

• Experience with IPC communication.

• Experience working with local storage (SQLite, IndexedDB, filesystem).

• Experience with WebSockets or other real-time transport mechanisms.

• Strong debugging and performance profiling skills.

• Familiarity with native OS behaviors on macOS or Windows.

Tech Stack

• Electron

• Node.js

• Typescript

• SQl & noSQL

How We Work
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.
Applications are evaluated by our technical team members. Interviews will be conducted via virtual meetings and/or onsite.
We value transparency and efficiency, so expect a prompt decision. If you've demonstrated the exceptional skills and mindset we're looking for, we'll extend an offer to join us. This isn't just a job offer; it's an invitation to be part of a team that's bringing AI to have practical benefits to billions globally.
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Source: Arbeitnow (https://www.arbeitnow.co.uk/jobs/companies/bjak/software-engineer-desktop-london-244100)