
Changelog Interviews
Conversations with the hackers, leaders, and innovators of the software world. Adam Stacoviak and Jerod Santo face their imposter syndrome so you don’t have to. Expect in-depth interviews with the best and brightest in software engineering, open source & leadership. This is a polyglot podcast. All programming languages, platforms & communities are welcome.
Latest episodes

Feb 28, 2019 • 1h 23min
Containerizing compute driven workloads with Singularity
We’re talking with Greg Kurtzer, the founder of CentOS, Warewulf, and most recently Singularity — an open source container platform designed to be simple, fast, and secure. Singularity is optimized for enterprise and high-performance computing workloads. What’s interesting is how Singularity allows untrusted users to run untrusted containers in a trusted way. We cover the backstory, Singularity Pro and how they’re not holding the open source community version hostage, as well as how Singularity is being used to containerize and support workflows in artificial intelligence, machine learning, deep learning, and more.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
Clubhouse – The first project management platform for software development that brings everyone on every team together to build better products. Get an extra two months free - head to clubhouse.io/changelog
Raygun – Unblock your biggest app performance bottlenecks with Raygun APM. Smarter application performance monitoring (APM) that lets you understand and take action on software issues affecting your customers.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Gregory M. Kurtzer – Website, GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XJerod Santo – GitHub, LinkedIn, Mastodon, XShow Notes:
Sylabs.io
Sylabs Cloud
Special thanks to Jacob Chappell (phpHavok) and Andre Marcelo-Tanner (kzap) for kicking things off on Ping
Now Live: Singularity 3.0!
sylabs/singularity
Open Containers Initiative
Founders Talk #61: Isaac Schlueter on building npm and hiring a CEO
Something missing or broken? PRs welcome!

Feb 22, 2019 • 1h 8min
Enabling open code for science at NumFOCUS
We’re talking with Gina Helfrich the Communications Director for NumFOCUS about their story and history, the impact of open code on science, the difference between sponsored and affiliated projects, corporate backing, the back story of their education and events program PyData, and the struggles of storytelling and fundraising.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
Clubhouse – The first project management platform for software development that brings everyone on every team together to build better products. Get an extra two months free - head to clubhouse.io/changelog
Raygun – Unblock your biggest app performance bottlenecks with Raygun APM. Smarter application performance monitoring (APM) that lets you understand and take action on software issues affecting your customers.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Gina Helfrich – XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XJerod Santo – GitHub, LinkedIn, Mastodon, XShow Notes:
Special thanks to Bryan W. Weber for suggesting this episode
NumFOCUS — Open Code • Better Science
NumFOCUS — Sponsored projects
NumFOCUS — Affiliated projects
We talked Spack on Request for Commits #13 with Todd Gamblin
We talked rOpenSci on The Changelog #263 with Karthik Ram
PyData.org
Digitizing images of the Sun from the 1970s with SunPy Maps
Something missing or broken? PRs welcome!

Feb 15, 2019 • 1h 28min
With great power comes great responsibility
Adam and Jerod are joined by JS Party panelist Nick Nisi and #causeascene advocate Kim Crayton for a deep discussion on ethics in the technology industry at-large and our roles as software developers. If you’ve never heard Kim describe what life is like online for underrepresented and marginalized folks, you have to listen to this show!
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:DigitalOcean – The simplest cloud platform for developers and teams Whether you’re running one virtual machine or ten thousand, makes managing your infrastructure too easy. New accounts get $100 in credit to use in your first 60 days.
GitPrime – Ship faster because you know more. Not because you’re rushing. GitPrime helps software teams accelerate their velocity and release products faster by turning historical git data into easy to understand insights and reports.
Rollbar – We move fast and fix things because of Rollbar. Resolve errors in minutes. Deploy with confidence. Learn more at rollbar.com/changelog.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Kim Crayton – Website, GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XJerod Santo – GitHub, LinkedIn, Mastodon, XNick Nisi – Website, GitHub, Mastodon, XShow Notes:
We start by asking the question: should we npm-uninstall-facebook.com?
Jerod and Nick first met Kim at NEJS Conf 2017
Kim also keynoted Node+JS Interactive 2017
Kim’s podcast discusses these topics often
The #causeascene movement being lead by Kim
Read Kim’s article on QZ about defining diversity & inclusion terms
Here’s coverage of bots mimicking female/black voices on NBC, Wired, and NYTimes
Something missing or broken? PRs welcome!

Feb 6, 2019 • 1h 13min
Tactical design advice for developers
Adam talks with Erik Kennedy about tactical design advice for developers. Erik is a self-taught UI designer and brings a wealth of practical advice for those seeking to advance their design skills and learn more about user interface design. We cover his seven rules for creating gorgeous UI, the fundamentals of user interface design — color, typography, layout, and process. We also talk about his course Learn UI Design and how it’s the ultimate on-ramp for upcoming UI designers.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:DigitalOcean – The simplest cloud platform for developers and teams Whether you’re running one virtual machine or ten thousand, makes managing your infrastructure too easy. New accounts get $100 in credit to use in your first 60 days.
GitPrime – Ship faster because you know more. Not because you’re rushing. GitPrime helps software teams accelerate their velocity and release products faster by turning historical git data into easy to understand insights and reports.
Rollbar – We move fast and fix things because of Rollbar. Resolve errors in minutes. Deploy with confidence. Learn more at rollbar.com/changelog.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Erik Kennedy – Website, GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XShow Notes:
Learn UI Design
Erik’s color generator that Jerod logged about
7 Rules for Creating Gorgeous UI
7 Rules for Creating Gorgeous UI — Part 2
3 Pro Tips on Alignment
Learn UI Design Blog
Something missing or broken? PRs welcome!

Jan 30, 2019 • 1h 9min
A UI framework without the framework
Jerod and Adam talked with Rich Harris –a JavaScript Journalist on The New York Times Investigations team– about his magical disappearing UI framework called Svelte. We compare and contrast Svelte to React, how the framework is embedded in a component, build time vs. run time, scoping CSS to components, and CSS in JavaScript. Rich also shares where Svelte v3 is heading and the details on Sapper, a framework for building extremely high-performance progressive web apps, powered by Svelte.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:DigitalOcean – The simplest cloud platform for developers and teams Whether you’re running one virtual machine or ten thousand, makes managing your infrastructure too easy. New accounts get $100 in credit to use in your first 60 days.
GitPrime – Ship faster because you know more. Not because you’re rushing. GitPrime helps software teams accelerate their velocity and release products faster by turning historical git data into easy to understand insights and reports.
Rollbar – We move fast and fix things because of Rollbar. Resolve errors in minutes. Deploy with confidence. Learn more at rollbar.com/changelog.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Rich Harris – GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XJerod Santo – GitHub, LinkedIn, Mastodon, XShow Notes:
Thanks to Kevin McGee for suggesting this interview on Ping
The Great Divide by Chris Coyier
Frameworks without the framework; why didn’t we think of this sooner?
Rich’s spectacular work on display in a piece for The New York Times on Twitter bots
Watch Rich’s talk at JSConf EU 2018, “Computer, build me an app”
Svelte website
Follow Svelte on Twitter
Something missing or broken? PRs welcome!

Jan 23, 2019 • 1h 17min
GitHub Actions is the next big thing
Adam and Jerod talk to Kyle Daigle, the Director of Ecosystem Engineering at GitHub. They talk about GitHub Actions, the new automation platform announced at GitHub Universe this past October 2018. GitHub Actions is the next big thing coming out of GitHub with the promise of powerful workflows to supercharge your repos and GitHub experience. Build your container apps, publish packages to registries, or automate welcoming new users to your open source projects — with access to interact with the full GitHub API and any other public APIs, Actions seem to have limitless possibilities.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:DigitalOcean – DigitalOcean is simplicity at scale. Whether your business is running one virtual machine or ten thousand, DigitalOcean gets out of your way so your team can build, deploy, and scale faster and more efficiently. New accounts get $100 in credit to use in your first 60 days.
GitPrime – GitPrime helps software teams accelerate their velocity and release products faster by turning historical git data into easy to understand insights and reports. Ship faster because you know more. Not because you’re rushing.
Rollbar – We catch our errors before our users do because of Rollbar. Resolve errors in minutes, and deploy your code with confidence. Learn more at rollbar.com/changelog.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Kyle Daigle – Website, GitHub, XJerod Santo – GitHub, LinkedIn, Mastodon, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XShow Notes:
Learn more information about GitHub Actions
Read this post by Jessie Frazelle on how a GitHub action works
Marketplace of GitHub actions (only available to people in the public beta for now)
Pull Reminders helps you remember to review code and get pull requests merged.
Future of Software: Developers at the center of the universe
This org has repos of different GitHub actions for many situations
Adam logged Sarah Drasner’s list of awesome GitHub actions
Article from GitLab about the importance of continous integration
Something missing or broken? PRs welcome!

Jan 16, 2019 • 47min
source{d} turns code into actionable insights
Adam caught up with Francesc Campoy at KubeCon + CloudNativeCon 2018 in Seattle, WA to talk about the work he’s doing at source{d} to apply Machine Learning to source code, and turn that codebase into actionable insights. It’s a movement they’re driving called Machine Learning on Code. They talked through their open source products, how they work, what types of insights can be gained, and they also talked through the code analysis Francesc did on the Kubernetes code base. This is as close as you get to the bleeding edge and we’re very interested to see where this goes.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
Clubhouse – The first project management platform for software development that brings everyone on every team together to build better products. Get an extra two months free - head to clubhouse.io/changelog
Raygun – Unblock your biggest app performance bottlenecks with Raygun APM. Smarter application performance monitoring (APM) that lets you understand and take action on software issues affecting your customers.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Francesc Campoy – Website, GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XShow Notes:
An analysis of the Kubernetes codebase
source{d} and the source{d} community
JustForFunc
Something missing or broken? PRs welcome!

Jan 9, 2019 • 43min
Perspectives on Kubernetes and successful cloud platforms
Adam caught up with Brendan Burns (co-creator of Kubernetes and Partner Architect at Microsoft Azure) at KubeCon + CloudNativeCon 2018 in Seattle, WA to talk about the state of Kubernetes, the importance of community, building healthy cloud platforms, and the future of cloud infrastructure.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
Clubhouse – The first project management platform for software development that brings everyone on every team together to build better products. Get an extra two months free - head to clubhouse.io/changelog
Raygun – Unblock your biggest app performance bottlenecks with Raygun APM. Smarter application performance monitoring (APM) that lets you understand and take action on software issues affecting your customers.
Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Featuring:Brendan Burns – GitHub, XAdam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XShow Notes:
The Commons Clause
Brendan’s talk at KubeCon — !go, Interacting with and Extending Kubernetes in a Polyglot World
Read The Illustrated Children’s Guide to Kubernetes — Here’s a link to a pdf version of it
Metaparticle is a standard library for cloud native applications on Kubernetes.
cncf/artwork — CNCF related logos and artwork
Something missing or broken? PRs welcome!

Dec 19, 2018 • 1h 4min
State of the "log" 2018
On this year’s “State of the ‘log’” episode we’re going behind the scenes to look back at 2018 as we prepare for 2019 and onward. We talk through our most popular episodes, most controversial episodes, and even some of our personal favorites. We also catch you up on some company level updates here at Changelog Media. We hired Tim Smith earlier this year as our Senior Producer, we retired Request for Commits, started some new shows…
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com.
Rollbar – We catch our errors before our users do because of Rollbar. Resolve errors in minutes, and deploy your code with confidence. Learn more at rollbar.com/changelog.
Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
Algolia – Our search partner. Algolia’s full suite search APIs enable teams to develop unique search and discovery experiences across all platforms and devices. We’re using Algolia to power our site search here at Changelog.com. Get started for free and learn more at algolia.com.
Featuring:Adam Stacoviak – Website, GitHub, LinkedIn, Mastodon, XJerod Santo – GitHub, LinkedIn, Mastodon, XShow Notes:Before we officially head into the year end I wanted to take a moment to thank you for your time and attention, it means the world to us. We work very hard to produce this podcast and we do it for you, the listeners — so thank you. Please be safe over the holiday break. Enjoy your time with family, friends, and loved ones. We’ll see you again in 2019!
Most popular episodes
#291 – Winamp2 JS with Jordan Eldredge
#288 – Live coding open source on Twitch with Suz Hinton
#295 – Scaling all the things at Slack with Julia Grace
#298 – The beginnings of Microsoft Azure with Julia White
#297 and #314 on GraphQL
Most controversial
#300 – Corporate interests in open source and dev culture with Zed Shaw
Throwback to #205 – A protocol for dying with Pieter Hintjens
Staff favorites
Adam: Drupal is a pretty big deal
Jerod: A call for kindness in open source
New shows!
You can listen to Backstage on the web or subscribe via Master
You are subscribed to Master, right? 😉
Listen to the new and improved JS Party
Founders Talk is back in a big way!
Tim Smith’s Away from Keyboard is a must-listen
Maybe start with episode #4?
We didn’t talk too much about Practical AI, but it’s rad too
Something missing or broken? PRs welcome!

Dec 13, 2018 • 1h 16min
Untangle your GitHub notifications with Octobox
Jerod is joined by Andrew Nesbitt and Ben Nickolls to talk Octobox, their open source web app that helps you manage your GitHub notifications. They discuss how Octobox came to be, why open source maintainers love it, the experiments they’re doing with pricing and business models, and how Octobox can continue to thrive despite GitHub’s renewed interest in improving notifications.
Join the discussionChangelog++ members support our work, get closer to the metal, and make the ads disappear. Join today!Sponsors:Rollbar – We catch our errors before our users do because of Rollbar. Resolve errors in minutes, and deploy your code with confidence. Learn more at rollbar.com/changelog.
Linode – Our cloud server of choice. Deploy a fast, efficient, native SSD cloud server for only $5/month. Get 4 months free using the code changelog2018. Start your server - head to linode.com/changelog
GoCD – GoCD is an on-premise open source continuous delivery server created by ThoughtWorks that lets you automate and streamline your build-test-release cycle for reliable, continuous delivery of your product.
Command Line Heroes – A new podcast about the epic true tales of the developers, hackers, and open source rebels revolutionizing the tech landscape from the command line up. Presented by Red Hat.
Featuring:Andrew Nesbitt – Website, GitHub, XBenjamin Nickolls – GitHub, XJerod Santo – GitHub, LinkedIn, Mastodon, XShow Notes:
Andrew was a guest on The Changelog #188 and Request For Commits #3
The two met at a 24 Pull Requests event
They’ve been working on Libraries.io for the last couple of years
When it comes to clipboard managers, Andrew recommends Alfred
For all things Octobox, start right here
Or jump straight to its GitHub repo
Find Octobox on GitHub Marketplace
Or support the community on Open Collective
Their Roadmap is also open source
Something missing or broken? PRs welcome!