MCP CLI Engineer Intern - Governed Tooling for Agents

PERCO; San Francisco (CA); On-site; USD 27,552 - 55,104; Part time

Benefits offered by this job

Direct mentorship

Flexible remote work

Hands-on project ownership

Job summary

PERCO is seeking an MCP CLI Development Engineer Intern to help build and refine the PERCO CLI and its MCP integration surface. You will own small, real product slices—from design through testing and evidence-backed handoff—across command design, client integration, reliability, and documentation.

You will work on a governed production layer, with focus on safe, typed inputs, clear context, and durable tooling for coding clients and project environments.

Qualifications

• Demonstrated ability to design, build, test, and debug developer-facing tools.
• Working proficiency in JavaScript/TypeScript or Python, Git, and API fundamentals.
• Comfort with command-line workflows and debugging across local environments.

Responsibilities

• Build and improve the PERCO CLI and MCP connection workflow for coding clients.
• Design clear, reliable command flows for login, project linking, MCP installation, configuration, and error recovery.
• Implement and test developer-facing integrations across coding clients and real project environments.
• Automate checks with unit tests, integration tests, Playwright, and release evidence.
• Investigate failures to root cause and ship durable fixes with regression coverage.

Skills

JavaScript

TypeScript

Python

Git

CLI development

Playwright

JSON-RPC

Tools

npm

CLI tooling

Job description

PERCO is seeking an MCP CLI Development Engineer Intern to help build and refine the PERCO CLI and its MCP integration surface. You will own small, real product slices—from design through testing and evidence-backed handoff—across command design, client integration, reliability, and documentation.

You will work on a governed production layer, with focus on safe, typed inputs, clear context, and durable tooling for coding clients and project environments.