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Chief Technology Officer

Bjak · United States

Extracted from the posting

Base
Not stated
Remote
Remote
Stack
Kotlin, Python, PyTorch, TensorFlow Lite (company stack)

Owns technology strategy, architecture and engineering standards across ActAI's Group businesses, starting from its agent-first mobile communication app. Reviews critical systems, architecture, infrastructure and code directly, and decides where infrastructure is shared across the Group. Requires deep backend, API, database, cloud and distributed systems experience and the ability to recruit senior engineers.

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 first application is an agent-first mobile communication app. We believe building applications that users use daily for communication, coordination and collaboration needs will help integrate AI into their lives. The net effect is to eliminate misinformation, achieve low coordination costs, enable high quality tasks and collaboration at scale with minimal or little prompting.

About the Role

The CTO will own technology strategy, architecture and engineering standards across the Group. This is a technical leadership role for someone who can operate across multiple businesses while remaining close to systems, architecture and engineering execution.

What you will be doing

  • Own architecture and major technical decisions across group products and platforms.
  • Review critical systems, architecture, infrastructure and code directly.
  • Set engineering standards across reliability, security, performance, testing and code quality.
  • Identify technical debt and architecture constraints and drive their resolution.
  • Improve engineering productivity, development speed and production reliability.
  • Decide where technology and infrastructure should be shared across Group businesses.
  • Recruit and assess senior engineers, technical leads and engineering leaders.

What you will need

  • Deep software engineering background with experience building and scaling production systems.
  • Strong knowledge of backend systems, APIs, databases, cloud infrastructure and distributed systems.
  • Experience making architecture decisions across multiple products or engineering teams.
  • Strong technical judgement and ability to challenge engineering decisions at implementation level.
  • Capable of building world-class engineering teams.
  • Still technically hands-on - able to review code, architecture, incidents and difficult engineering problems directly.

Company stack

This posting doesn’t list technologies. These are the ones Bjak uses across its other roles.

KotlinPythonPyTorchTensorFlow LiteFigmaJAXJetpack ComposeAndroid
Bjak
Bjak
Website

Job details

TypeFull-time
Work ModeRemote
LevelExecutive
LocationUnited States
PostedNov 05, 2026
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