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Software Engineer, Plugin Developer Platform

San Francisco💼 Full-time🗓 2026-08-18 → 2026-09-26

Core

Design and ship APIs, SDKs, and services enabling developers to create, test, publish, and share plugins for ChatGPT and Codex.

Role type

Senior IC platform engineer (developer tools & APIs)

Builds

Developer-facing APIs, SDKs, plugin lifecycle systems, and open standards (MCP)

Domain

AI developer platforms, plugin ecosystems, open standards

Deliverable

production ML models | product features

Required skills

API/SDK design, developer experience (DX), backend systems, open-source contribution, cross-stack navigation, product-technical translation

Preferred skills

Experience building platforms used by other developers, familiarity with AI agent tooling

Technologies

MCP, ChatGPT, Codex

Responsibilities

Design and ship APIs/SDKs for plugin extension; Improve plugin creation, testing, publishing, and sharing workflows; Enhance compatibility across ChatGPT and Codex; Contribute to open standards like MCP; Collaborate with Product, Research, Security, and Trust & Safety on permissions and safe execution

Seniority

Senior, hands-on IC

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