# AI Phone - AI Systems / Agent Architect at Bjak

AI Phone - AI Systems / Agent Architect at Bjak in China. Remote, full-time. Posted November 4, 2026.

- Company: Bjak
- Location: China
- Workplace: Remote
- Job type: Full-time
- Posted: 2026-11-04
- Apply: https://jobs.ashbyhq.com/bjakcareer/3e2e9cea-4d1f-4d62-8053-200e6e81ac73/application
- Source: https://jobmagic.ai/jobs/ai-phone-ai-systems-agent-architect-bjak-fpk9c5

## Requirements

- Strong backend and distributed systems engineering experience.
- Experience building production AI agent systems or complex orchestration systems.
- Strong understanding of LLMs, tool calling, structured outputs and agent execution.
- Experience with stateful workflows and multi-step task execution.
- Experience with context engineering, retrieval and memory systems.
- Strong system design and architecture skills.
- Ability to work across backend, AI and platform engineering.

## Description

### **About**

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:** Agent runtime, context, memory, orchestration and overall AI system architecture.
**Responsibilities**

- Define the overall AI architecture for the phone.

- Design how AI agents interact with the OS and applications.

- Define agent runtime and orchestration architecture.

- Design context and memory systems that allow AI to understand user activities, preferences and ongoing tasks.

- Define how agents execute multi-step workflows across different applications.

- Design long-running task execution, state management and recovery mechanisms.

- Define model routing between on-device and cloud models.

- Evaluate the feasibility of running different AI capabilities locally versus remotely.

- Work with Android engineers to define the interfaces required for system-level AI execution.

- Establish reliability, observability and evaluation standards.

**Requirements**

- Strong backend and distributed systems engineering experience.

- Experience building production AI agent systems or complex orchestration systems.

- Strong understanding of LLMs, tool calling, structured outputs and agent execution.

- Experience with stateful workflows and multi-step task execution.

- Experience with context engineering, retrieval and memory systems.

- Strong system design and architecture skills.

- Ability to work across backend, AI and platform engineering.

**Nice to have**

- Experience building AI assistants or agent platforms.

- Experience with long-running autonomous workflows.

- Experience with model routing and inference optimization.

- Experience with on-device AI or hybrid local/cloud architectures.

- Experience with permission-aware tool execution and agent security.