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Lead Software Engineer, AI Email App

bjakcareerChinaActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Lead
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

Based in China, the Lead Software Engineer, AI Email App position at bjakcareer involves directing application engineering for proactive productivity tools and suits a senior technical leader with extensive production experience. This role requires managing the system architecture across backend, mobile, and desktop platforms while mentoring a compact team of senior developers.

Role Overview

The organization focuses on creating proactive productivity software for standard applications like email, notes, and calendars without requiring complex user prompting. The technical lead owns the application engineering layer, bridging artificial intelligence capabilities with reliable product experiences. This position demands active coding alongside architectural decision-making to maintain system speed, reliability, and scale.

Key Responsibilities

Direct application engineering strategy spanning mobile, desktop, and backend environments.
Architect dependable systems for artificial intelligence workflows handling state, retries, tool usage, orchestration, and failure recovery.
Develop APIs and abstractions linking machine learning capabilities to practical user experiences.
Direct a compact, senior engineering group via code reviews, design evaluations, and direct mentorship.
Balance trade-offs involving latency, security, reliability, cost, and user experience.
Implement production standards including testing, observability, and monitoring.
Collaborate alongside machine learning leadership to deliver robust product features.

Requirements

Extensive background leading application or product engineering for intricate systems.
Practical experience constructing and deploying production backend systems.
Background developing artificial intelligence products or systems integrating modern language model capabilities.
Technical judgment capable of making decisions with incomplete information.
Cross-platform proficiency across backend and client environments, featuring deep knowledge in at least one.
Strong focus on ownership, deployment, and practical learning.

Skills and Tools

Backend Services
APIs
Mobile Platforms
Desktop Platforms
ML/LLM Capabilities

About the Company

bjakcareer operates as a compact, hands-on organization focused on developing artificial intelligence applications designed to organize daily life and routine tasks for global users.

How to Apply

Interested candidates should submit their application through the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the job located?

The position is based in China.

What is the focus of the product?

The product focuses on building proactive applications for email, notes, tasks, calendar, and workflows with minimal to no prompting, emphasizing high reliability and persistent context.

Is this a hands-on role?

Yes, this is a hands-on leadership role where the engineer stays close to the code, makes critical architectural decisions, and leads a small team of senior engineers.

What does the interview process look like?

The interview process consists of three to four interviews evaluated by technical team members, conducted via virtual meetings and/or onsite.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site