About the role
We are looking for an AI Agent Engineer with 3+ years of experience to own and set the technical bar for our coding agent — the core engine that turns natural language into working, shareable interactive mini-apps. This is a high-ownership role where you will lead architecture decisions end-to-end and directly shape the creation experience for our 1M+ monthly active users.
Responsibilities
- Design and own the agent runtime and orchestration layer for our coding agent
- Build long-horizon agent workflows: prompt → plan → generate → run/validate → repair → publish
- Develop robust evaluation and quality loops including eval harnesses, regression testing, and failure taxonomy
- Design model strategies including routing, benchmarking, reliability improvements, and cost/latency optimization
- Create debuggable agent systems with tracing, metrics, alerts, and observability
About Sekai
Sekai is building the TikTok of interactive mini-apps — a consumer social platform where users scroll a feed of playable experiences and create their own simply by describing what they want. Our AI-powered creation flow turns natural language into shareable, interactive content. Backed by a16z, Mayfield, and Khosla, founded in 2024, and already at 1M+ MAUs.
