Python founder Guido van Rossum joins Microsoft
He joins the firm’s Developer Division as Python breaks into the top two most popular languages for the first time


Renowned programmer and founder of the Python programming language, Guido van Rossum, has come out of retirement to join Microsoft’s development team.
More than a year after announcing his retirement, van Rossum has decided to take up a role with the company’s ‘Development Division’, with a view to making Python generally better to use, and not just for Windows 10.
The Python creator left Dropbox in October 2019, having worked at the company for almost seven years, making contributions to Python at Dropbox but also exerting major influence over the company's engineering culture, and staff. Prior to this, van Rossum developed software for Google.
Few details have been disclosed about the nature of van Rossum’s role, although it’s expected his presence will continue to influence Microsoft’s deepening integration with Python. Van Rossum also hinted at “lots of open source” when it comes to his duties.
His latest move coincides with the Python language flying past Java to break into the top-two most popular programming languages for the first time, according to the TIOBE index.
Python ranked second in the latest monthly rankings for the first time in the index’s 20-year history, with C still the most popular language. C and Java have traditionally been the most prevalent languages among developers up to this point.
The TIOBE index is updated once a month, and ratings are based on the number of skilled engineers worldwide, courses and third-party vendors. Popular search engines are used to calculate the ratings. C scored 16.2%, followed by Python on 12.1% and Java on 11.7%.
Sign up today and you will receive a free copy of our Future Focus 2025 report - the leading guidance on AI, cybersecurity and other IT challenges as per 700+ senior executives
Supplementary research has reinforced this point, with Stack Overflow reporting separately last year that Python and Typescript were the joint-second most popular languages among developers. In this study, Javascript was found to be the most popular language.
Python’s relative simplicity against other languages makes it a highly accessible language for developers, including people who want to get to grips with the fundamentals of coding.
Photo by Daniel Stroud / CC 4.0 International

Keumars Afifi-Sabet is a writer and editor that specialises in public sector, cyber security, and cloud computing. He first joined ITPro as a staff writer in April 2018 and eventually became its Features Editor. Although a regular contributor to other tech sites in the past, these days you will find Keumars on LiveScience, where he runs its Technology section.
-
UK government programmers trialed AI coding assistants from Microsoft, GitHub, and Google – here's what they found
News Developers participating in a trial of AI coding tools from Google, Microsoft, and GitHub reported big time savings, with 58% saying they now couldn't work without them.
-
Senior developers are all in on vibe coding, but junior staff lack the experience to spot critical flaws
News Experienced developers are far more confident in using AI-generated code
-
Hexaware partners with Replit to take secure 'vibe coding' to the enterprise
News The new collaboration enables business teams to create secure, production-grade applications without the need for traditional coding skills
-
Microsoft says AI is finally having a 'meaningful impact' on developer productivity – and 80% 'would be sad if they could no longer use it'
News Researchers at Microsoft wanted to demystify how AI is being used by software developers – their findings show the benefits are finally becoming clear.
-
Google's new Jules coding agent is free to use for anyone – and it just got a big update to prevent bad code output
News Jules came out of beta and launched publicly earlier this month, but it's already had a big update aimed at improving code quality and safety.
-
Using an older version of Python? You’re leaving ‘money and performance on the table’ if you don’t upgrade – and missing out on big developer efficiency gains
News New research from JetBrains shows a majority of enterprises are using a version of Python that’s a year or more older – and it's having a big impact on efficiency and performance.
-
Developers say AI can code better than most humans – but there's a catch
News A new survey suggests AI coding tools are catching up on human capabilities
-
84% of software developers are now using AI, but nearly half 'don't trust' the technology over accuracy concerns
News AI coding tools are delivering benefits for developers, but they’re still worried about security and compliance