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# AI Phone - AI Application Integration Engineer

- **Company:** Bjak
- **Location:** London, UK
- **Salary:** £54,739.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Android Software Development, Application Integration Architecture, User Authentication, Mobile Application Software, Software Engineering, Systems Integration, Agentic-AI, Enterprise Integration, Api Design
- **Published:** November 6, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5954046664

## About the Role

* Strong software engineering and API development experience.
 * Experience integrating multiple applications or external services.
 * Understanding of mobile application architecture.
 * Experience with authentication and authorization.
 * Strong debugging and integration skills.
 * Experience building reliable APIs and asynchronous workflows.

 * Android development experience.
 * Knowledge of Android intents, IPC and accessibility services.
 * Experience with messaging, email, calendar or productivity integrations.
 * Experience building agent tools or MCP integrations.
 * Experience with application interoperability.

## Description

We are reimagining the phone. AI phones need to be proactive, intuitive, intelligent and low cost. This is a mission critical for rest of the world to adopt intelligence.

There are over 5 billion people using everyday applications such as email, messaging, notes, tasks, and calendars, yet most are not AI-native. Our mission is to build proactive applications and devices that bring intelligence into daily conversations, coordination and workflows, with minimal prompting.

Focus: Making applications accessible and actionable by AI agents, so agents can interact with applications and execute workflows across them.

 * Build integrations between AI agents and first-party applications.
 * Expose structured actions that agents can execute.
 * Implement interfaces for retrieving information from applications.
 * Support actions such as search, create, update, send and delete.
 * Build cross-application workflows.
 * Develop reusable integration interfaces and SDKs.
 * Handle authentication, authorization and permissions.
 * Investigate third-party application integration limitations.
 * Work with Android engineers on system-level application access.