Coffee and Open Source

Michael Stahnke is a seasoned technology leader and open-source advocate, currently serving as the VP of Engineering Flox. With experience in leading operations and engineering departments, Michael has played a pivotal role in shaping DevOps practices and automation in software development. Prior to joining Flox he held senior leadership positions at CircleCI and Puppet, where he built and led engineering teams solving problems for developers and operations. He is a regular speaker at technology conferences, sharing insights on DevOps transformations, scalability challenges, and the future of automated workflows. He’s obsessed with measurements of engineering performance and finding a great night of karaoke.
You can find Michael on the following sites:
LinkedIn
GitHub
Bluesky
Here are some links provided by Michael:
Flox
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You can check out more episodes of Coffee and Open Source on https://www.coffeeandopensource.com
Coffee and Open Source is hosted by Isaac Levin

Keith Townsend is an independent CTO advisor and infrastructure practitioner focused on how enterprises actually adopt AI, cloud, and open-source platforms at scale. He’s the founder of The Advisor Bench and the voice behind The CTO Advisor, where he helps CIOs and CTOs navigate hard infrastructure decisions around hybrid cloud, AI systems, and platform architecture.
Keith has spent his career inside large enterprises and alongside vendors—working as an enterprise architect, consultant, and analyst—bridging the gap between engineering reality and executive decision-making. He’s known for translating complex systems into plain English and for challenging hype with operational truth.
Today, Keith advises enterprise IT leaders, moderates closed-door executive forums, and builds real AI systems himself—using open source not as ideology, but as a practical tool for control, portability, and long-term leverage.You can find Keith on the following sites:
Blog
YouTube
LinkedIn
X
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You can check out more episodes of Coffee and Open Source on https://www.coffeeandopensource.com
Coffee and Open Source is hosted by Isaac Levin

Jan combines the precision of his background in luxury watchmaking with deep experience in platform engineering and open source. As a GitHub Star and Microsoft MVP, he has demonstrated impact in the community and with companies worldwide. He led teams of dozens of engineers at NIKE EMEA, built the popular cross-platform prompt theme engine Oh My Posh, and guides organizations in their transformation toward AI-native software development. Jan helps companies scale, modernize, and align their technical strategy with business goals—always with craftsmanship and attention to detail.
You can find Jan on the following sites: LinkedIn
GitHub
Bluesky
Here are some links provided by Jan: Oh My Posh
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You can check out more episodes of Coffee and Open Source on https://www.coffeeandopensource.com
Coffee and Open Source is hosted by Isaac Levin

Kat is the Head of Developer Advocacy at Minimus, focused on the growth and nurturing of open source through authentic contribution. In particular, her specialties are approachable 101-level content and deep dives on the history of technology, with a focus on DevOps and cloud native. She was the Kubernetes Release Lead for 1.30 Uwubernetes, and currently serves as a member of the Kubernetes Steering Committee, the Release Team Subproject Lead, and a SIG Docs Tech Lead.
When she’s not at a conference, she spends her time playing video games, watching horror movies, or reading science fiction, but her current hyperfixation is film photography. She lives in Colorado with her cat, Espresso, who is the real brains behind the operation and actually ghostwriting all of her posts.You can find Kat on the following sites:
Bluesky
Linktree
Here are some links provided by Kat:
Minimus
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Spotify
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You can check out more episodes of Coffee and Open Source on https://www.coffeeandopensource.com
Coffee and Open Source is hosted by Isaac Levin

Once described on Reddit as “technically challenged”, Sarah is a Principal Security Advocate working at Microsoft. She has lived all over the place but currently calls Melbourne home.
Sarah has been working in cyber security since before it was cool, has previously spoken at many security conferences including Black Hat and has co-authored a few Microsoft Press technical books. She is an active supporter of security communities across the globe and a co-host of the Microsoft Azure Security Podcast.
Sarah spends most of her spare time gaming, taking part in Melbourne's official sport of brunching, taking high tea and spending a disproportionate amount of her income on her dogs.You can find Sarah on the following sites:
Website
LinkedIn
GitHub
Bluesky
X
PLEASE SUBSCRIBE TO THE PODCAST
Spotify
Apple Podcasts
YouTube Music
Amazon Music
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You can check out more episodes of Coffee and Open Source on https://www.coffeeandopensource.com
Coffee and Open Source is hosted by Isaac Levin