Member of Technical Staff, Agentic Developer Experience

Vapi•San Francisco, CA

13d

About The Position

Vapi is seeking a dedicated owner to transform fragmented agent skills, workflows, and tools into a reliable agentic development lifecycle. The goal is to create a cohesive system that connects sandboxes, CI, verification, and background agents, accelerating the engineering team's ability to ship 10x faster. This role will build the frontier agent harness for real-time voice AI, enabling agents to place real calls, validate their work, and ship with confidence.

Requirements

Built internal platforms, developer tooling, or infrastructure that materially changed how engineers build, test, and ship software.
Hands-on engineer with strong software fundamentals across distributed systems, platform architecture, API design, CI/CD, and monorepo or large-codebase workflows.
Practical experience building agent harnesses and using coding agents such as Claude Code, Codex, Cursor, or open-source equivalents on real engineering work.
Knowledge of how to design secure agent interfaces, MCP integrations, and sandboxed runtimes where agents can call APIs, run CLI commands, and use general-purpose tools safely.
Experience building or operating online and offline LLM evaluation systems and ability to reason clearly about accuracy, latency, reliability, and cost.
Fluent in at least one of TypeScript, Python, or Go.
Comfortable working across containers, databases, queues, orchestration systems, and modern cloud infrastructure.
Keeps current on frontier models and techniques such as prompt caching, context compression, retrieval, and multi-agent coordination, and knows when the newest tool is useful versus distracting.
Thrives in ambiguity, seeks raw input, and turns fragmented experiments into simple systems that other engineers want to use.

Responsibilities

Map and instrument Vapi’s path from task to production.
Identify the largest constraints on agent effectiveness.
Ship first improvements to the sandbox environment, developer tooling, or validation infrastructure.
Launch the first production workflow in Vapi’s internal software factory.
Provide background agents with context, tools, sandbox, telemetry, and automated quality gates.
Own and launch Vapi’s platform for autonomous, background engineering.
Build a harness that lets agents place real calls, measure latency, conversation quality, inspect telemetry, and iterate to a verified result.
Create the foundation that accelerates every engineer and puts Vapi on a credible path to shipping 10x faster.