Software Engineer, Open Source

> CrewAI · San Francisco, United States (Hybrid) · Full-time · Posted 2026-06-26

Workplace: hybrid

Department: Engineering

Description

About CrewAI

CrewAI is the leading framework and enterprise platform for building and orchestrating multi-agent AI systems. The open-source framework is a lean, fast Python library that has grown to 53k+ GitHub stars, 7.4k+ forks, and 100k+ developers certified through our community courses. It is rapidly becoming the standard for production-grade agentic automation powering hundreds of millions of agentic executions a month. This role is about building that framework in the open.

The Role

You'll be a core maintainer of the CrewAI open-source framework: the Crews and Flows APIs that hundreds of thousands of developers build on. This is engineering done in public. Your design decisions, code reviews, and API choices are visible to a large community and ripple out to everyone building on the platform.

You'll balance velocity with the long-term stewardship a widely adopted open-source project demands, and you'll treat developer experience as a first-class product.

What You'll Do

• Design, build, and maintain core framework capabilities: agent orchestration, agent harness, Flows, task execution, tools, memory, MCP, A2A, and the public APIs developers depend on.
• Own the contributor experience: triage and review community PRs and issues, mentor contributors, and keep the bar high without killing momentum.
• Make and document API and DX decisions with backward compatibility and migration paths in mind. Changes here affect a very large installed base.
• Uphold engineering quality in the open: clean, well-tested Python, strong typing, and green CI on every change.
• Write and improve documentation, examples, and guides that help developers succeed quickly.