Thomas Dohmke, CEO of GitHub, has announced he will leave the company at the end of 2025 to launch a new startup. The Microsoft-owned code hosting and collaboration platform has seen significant growth during his tenure, and his departure signals the start of a major leadership shift.
In internal communications and on LinkedIn, Dohmke reflected on GitHub’s evolution: the platform now hosts over one billion repositories, serves more than 150 million developers, and leads the AI-assisted coding space with Copilot’s wide adoption.
Rather than naming a new CEO, GitHub will transition under Microsoft’s CoreAI division. Leadership will be shared between Asha Sharma, who heads AI platforms, and Julia Liuson, president of the developer division. This move integrates GitHub more directly into Microsoft’s broader AI strategy, after years of operating with a degree of independence.
Dohmke plans to remain in his role for the rest of the year to ensure a smooth transition, after which he will fully focus on building his next venture.
For GitHub’s community and developer ecosystem, this marks the beginning of a new chapter—one where AI is expected to play an even greater role in the company’s future direction. The shift underscores how deeply AI is now embedded in the software development lifecycle, shaping the tools and platforms used by millions worldwide.