Member of Technical Staff - Core Runtime

BUILD THE EXECUTION LAYER FOR THE AGENT ERA.

Runta builds runtime infrastructure for long-running AI agents: efficient execution, enforceable access controls, and complete execution records.

We’re a small, well-funded team based in the San Francisco Bay Area and Singapore. High talent density. High ownership.

This is the foundation of Runta. You will build the execution engine itself: the layer where agent processes actually run, get snapshotted, get resumed on different hardware, and recover from crashes without losing state.

Runta does three things: run, govern, record. This role owns run and builds the mechanisms that make record trustworthy. When we say an agent’s execution can be paused for a week and resumed byte-for-byte, or branched into three parallel explorations, or replayed to audit exactly what happened, the machinery behind those guarantees is what you build.

This is kernel-and-VMM-layer work, not orchestration-layer work. The problems live at memory layout, syscall boundaries, context switch costs, and crash recovery, not at the Kubernetes API.