As CEO of Holepunch, Mathias brings his passion and extensive expertise in open-source development to the fore, having published more than 1000 modules to npm, the Node.js package manager, totalling billions of downloads every month.

Mathias Buus is a self taught JavaScript hacker from Copenhagen. He works full time on open source projects and has been working with Node.js since the 0.2 days. Mathias likes to work with P2P and distributed systems and is the author of more than 550 modules on npm, including some of the most popular ones for working with streams. In addition he has spoken about “mad science” projects at various conferences around the world. You can find Mathias on the following sites:

• X
• LinkedIn
• GitHub
• Website

Here are some links provided by Mathias:

• Pear Runtime
• Keet

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Coffee and Open Source is hosted by Isaac Levin

Tessa Kriesel is the CEO of Built for Devs, where she fast-tracks developer tools from idea to essential. With over a decade in DevRel leadership at companies like Snap Inc. and Twitter, Tessa coaches early-stage startups and enterprises to build developer programs that drive adoption, innovation, and revenue. Her unique approach combines deep technical knowledge with strategic marketing, helping dev tools become indispensable parts of developers' workflows. A former engineering manager and self-taught open-source developer, Tessa bridges the gap between technical innovation and business success in the dev tools ecosystem. You can find Tessa on the following sites:

• Twitter
• Website

Here are some links provided by Tessa:

• Built For Dev

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Coffee and Open Source is hosted by Isaac Levin

Jamie is a software developer with 14 years' experience, a Microsoft MVP, 'Most Visionary Software Development & Consultancy Managing Director' awardee for 2023, and a skilled podcaster with 5 years in engaging content creation.

With a versatile tech toolkit, Jamie crafts tailored solutions, while his MVP status showcases his community commitment. His visionary leadership drives excellence, and his podcasting journey reflects his prowess in relatable communication. An inspiring multi-faceted professional, Jamie embodies dedication, innovation, and impactful change. You can find Jamie on the following sites:

• Twitter
• Mastodon
• GitHub

Here are some links provided by Jamie:

• Modern .NET Show

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Coffee and Open Source is hosted by Isaac Levin

April Speight began her career as a menswear stylist and visual merchandiser for brands such as Club Monaco, Saks, and Neiman Marcus. She graduated with a BS in Global Business & Public Policy from the University of Maryland and subsequently embarked on a career transition into tech. To close out her former career in fashion, she completed her Masters in Luxury & Fashion Management at the Savannah College of Art and Design - with a focus on the luxury automobile and luxury marijuana sectors.

In her spare time, she began to learn Python in hopes of becoming a data scientist. With a change of heart, she chose to focus on AI assistants, chat bots, and conversational design.

Always curious and always learning, she witnessed a life changing demo at a Microsoft event that set her on a new path in Extended Reality (XR). In 2020, she joined the Cloud Advocacy organization at Microsoft as a Sr. Cloud Advocate for Spatial Computing.

From 2020 - 2022, April became a thought leader in the XR space promoting safety, diversity, and inclusivity in the design of XR experiences. She served as the former Director of Community & Education for the XR Safety Initiative (XRSI), advising partners on XR curriculum.

Internally at Microsoft, she worked alongside the former Mixed Reality and MRTK teams. She created various XR samples, technical learning content, and was part of the team that won Silver in the 2021 Telly Awards for Remote Production – Non-Broadcast for Microsoft One Dev Question with April Speight. Before her transition to the Cloud Advocacy leadership team, April hosted the 2022 Mixed Reality Dev Days and collaborated with the current Microsoft Mesh team.

Today, she resides in Los Angeles as a Principal Cloud Advocate at Microsoft focused on Generative AI. You can find April on the following sites:

• Twitter
• Website
• GitHub
• LinkedIn

Here are some links provided by April:

• Bite-Size Python
• Visual Studio Code for Python Programmers

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Coffee and Open Source is hosted by Isaac Levin

Lukas Gentele is the co-founder and CEO of Loft Labs. Loft delivers Kubernetes-native tools, functionality and frameworks purpose-built for platform engineers to manage, activate and optimize their platform stack. Gentele is an experienced platform engineering innovator, committed to delivering solutions that empower platform teams to build seamlessly on Kubernetes. Prior to Loft, Gentele served as the co-founder and CEO at covexo GmbH and Webmans. He holds a Bachelor of Science in Computer Science and Information Systems, and a Master of Science, Computer Science & Management of Enterprise Information Systems, both from the University of Mannheim. You can find Lukas on the following sites:

• Twitter
• LinkedIn

Here are some links provided by Lukas:

• Loft Labs
• DevSpace

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Coffee and Open Source is hosted by Isaac Levin

Chris DeMars is a Senior Developer Advocate at DigitalOcean. He has over 20 years of technical experience and speaks globally on various frontend topics and has received accolades for his community contributions, including the prestigious Microsoft MVP and Progress Champion awards. Chris is passionate about enhancing web development and helping developers achieve their goals. In his free time, he enjoys writing blog posts, rating Detroit-style pizza, and investigating UFO's. You can find Chris on the following sites:

• Twitter
• LinkedIn
• GitHub

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Coffee and Open Source is hosted by Isaac Levin

April is a senior developer advocate and DevOps practice lead at GitHub, specializing in application transformation and DevOps ways of working. Her focus is to take customers of a journey from legacy technology, to serverless and containers, where code comes first, while enabling them to take full advantage of DevOps practices.

In April’s spare time she spends time outdoors hiking, skiing or scuba diving. She is also a triathlete competing in Ironman and Half Ironman triathlons.

April is often asked to present at events to showcase the latest GitHub and Microsoft technologies and also to present live demos that are industry specific and applicable to real life use cases.

You can find April on the following sites:

• Twitter
• Website
• GitHub

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Coffee and Open Source is hosted by Isaac Levin

David is a software engineer who spent most of his career in the Seattle area, working at Microsoft and Google. He has contributed to a range of products over the years, including ASP.NET, NuGet, Azure App Service, Azure Functions, Microsoft Office and Google Cloud infrastructure.

He now lives in Paris, near where he grew up, and is currently taking a break from corporate life. In addition to family life, he spends his time trail running, playing pickleball, and contributing to various OSS projects to keep his coding skills sharp! You can find David on the following sites:

• Twitter
• Blog
• GitHub
• Mastodon

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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