Software Engineer, Open Source

About CrewAICrewAI 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 RoleYou'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 DoDesign, build, and maintain core framework capabilities: agent orchestration, agent harness, Flows, task execution, tools, memory, MCP, A2A, and the public APIs developers depend onOwn the contributor experience: triage and review community PRs and issues, mentor contributors, and keep the bar high without killing momentumMake and document API and DX decisions with backward compatibility and migration paths in mind. Changes here affect a very large installed baseUphold engineering quality in the open: clean, well-tested Python, strong typing, and green CI on every changeWrite and improve documentation, examples, and guides that help developers succeed quicklyPartner with runtime and platform engineers to keep the OSS-to-enterprise boundary coherent, and reconcile versioning so framework changes do not break downstream enterprise consumersEngage the community directly through GitHub Discussions, forums, Discord, and other channels, turning real usage and feedback into roadmap signalRequirementsWhat We're Looking For7 plus years of Python engineering background, with a track record of shipping and maintaining library or framework code, not just application codeGenuine care for API design and developer experience. You've felt the difference between an API that's pleasant and one that isn't, and you can articulate whyExperience contributing to or maintaining open-source projects: reviewing external PRs, managing issue backlogs, and communicating decisions in publicFamiliarity with the modern Python toolchain: uv, pytest, type hints, pre-commit, and well-tested codeWorking knowledge of LLMs and agent concepts, or the appetite and ability to come up to speed fastComfort with the pace, ambiguity, and public feedback loops of an early-stage, high-growth environmentWe are unable to provide immigration sponsorship for this role. Applicants must have existing authorization to work in the U.S.