Pydantic is a Python library for typed validation of external data that has experienced exponential growth since 2020. We’ll hear the story of what motivated Samuel to create Pydantic, the most common ways people use it, and the success and growth of FastAPI with Pydantic. Also, Pydantic V2 has not been released yet, but we’ll learn what motivated Samuel to rewrite it in Rust, besides being faster and some other things happening with it. And if you’re interested, Samuel is always looking for contributors to Pydantic! Go ahead and download this episode now to hear more!

In this episode, we are honored to have Daniel Stenberg, the founder and lead developer of cURL, as our guest. cURL is a ubiquitous data transfer utility that grew into a robust library used in billions of applications worldwide. Daniel is a Swedish developer who has been involved in open source for decades. He is also the recipient of the Polhem Prize 2017 for his work on cURL. Join us as we talk to Daniel about his journey with cURL, his passion for open source, and everything in between.

Jason Warner is a Managing Director of Redpoint Ventures, a venture capital firm focused on investments in seed, early and growth-stage companies. Prior to joining Redpoint Ventures, Jason was the CTO of GitHub.

Beyang sits down with Jean Yang, Founder and CEO of Akita Software the eBPF powered API observability service. Prior to starting Akita, Jean was a professor at CMU where she worked on programming language design.

Beyang sits down with Adam Berry who has worked on developer tools and infrastructure his entire career, starting with Eclipse plugins for Wolfram Research and later moving into team-oriented tools that drastically lower cycle times, especially in organizations that reach scale in terms of humans an...

Beyang sits down with John Kodumal, CTO and co-founder of LaunchDarkly. LaunchDarkly is a SaaS feature management platform for developers that allows them to iterate and get code into production quickly and safely by separating feature rollout and code deployment.

Beyang talks with Ravi Parikh, founder and CEO of Airplane. Airplane is a developer tool for turning one-off scripts into internal mini-apps that can be used by technical and non-technical users across the company.

Beyang talks with Max Howell, creator of Homebrew, about his new package manager, tea, which aims to solve the problem of open-source funding. Max shares his beginnings in programming and what led him to work on early music players in Linux, Last.fm, and eventually get into Mac development.

Why can’t one CI scale alongside a company–from startup to enterprise? In this episode, Fedor Korotkov, founder and CTO of CirrusLabs, joins Beyang Liu, co-founder and CTO of Sourcegraph, to talk about how, as a student back in 2009, he developed a photo app that earned him almost $2,000 a month, share the time he applied to be an intern at Twitter but ended up with a full-time job, and explain how six months of “funemployment” led to the building and founding of Cirrus CI–the one CI to rule them all.

Why is the software industry now willing and excited to buy developer tools instead of building them internally? In this episode, Kelly Norton, principal software engineer at Mailchimp and creator of open-source code search engine Hound, joins Beyang Liu, co-founder and CTO of Sourcegraph, to talk about his work on the controversial project that would become Google Web Toolkit, share his experience trying to build an ecosystem of tooling, which resulted in Google Dart, and explain how the company he founded, FullStory, pioneered user testing.

Why should programmers treat programming like a craft? In this episode, Max Brunsfeld, co-founder of Zed, a collaborative code editor written in Rust, joins Beyang Liu, co-founder and CTO of Sourcegraph, to share the apprenticeship-like pair-programming experience that taught him to appreciate programming, explain how he learned the fundamentals of parsing on the weekends and tell the story of presenting an application he couldn’t explain to Paul Graham at Y Combinator

Why is using PlanetScale a mind-altering experience? In this episode, Sugu Sougoumarane, co-founder and CTO of PlanetScale, shares how one email got him a second job interview with Elon Musk, tells the story of how he became one of the elite engineers at Paypal by solving the company’s most painful process, and explains why database administrators are shifting from managing machines to managing fleets of machines.

Why is a systems engineering mindset essential for a scaling startup? In this episode of the Sourcegraph Podcast, Nelson Elhage, creator of the open source code search engine Livegrep, co-creator of the Ruby type checker Sorbet, and Member of Technical Staff at Anthropic, joins Beyang Liu, co-founder and CTO of Sourcegraph, to discuss how Rust is changing the security landscape, explain why Patrick McKenzie, better known as patio11, called his live code search tool “miraculous,” and dive deep into the weeds on the differences between trigram- and suffix-array-based search systems.

Why is building a technical community the most effective moat out there for startups? In this episode, swyx, who runs DevRel at Temporal and co-founded the Svelte Society, joins Beyang Liu, co-founder and CTO of Sourcegraph, to discuss the stress-induced heart palpitations that led him to transition from finance to tech, show how you can harness a willingness to look stupid to become a standout member of your community, and explain why every book should come with a Discord

When, and how, will computer vision and machine learning revolutionize the world? In this episode of the Sourceraph Podcast, Joseph Nelson, CEO and co-founder of Roboflow, joins Beyang Liu, co-founder and CTO of Sourcegraph, to discuss how Joseph got started in programming (developing a joke generator for a graphing calculator), to share his experience working as a human Google alert for the United States Congress, and to explain why he finds building developer tools so empowering.

How can you build a following, and a career, with memes? In this episode of the Sourcegraph Podcast, Cassidy Williams, Director of Developer Experience at Netlify, joins Beyang Liu, co-founder and CTO of Sourcegraph, to discuss why we should consider communication a core skill instead of a soft skill, why you should be a developer advocate or a software engineer but not both, and why, when learning React, you should start with the fundamentals

How do Google developers create and popularize internal tools? In this episode of the Sourcegraph Podcast, Han-Wen Nienhuys, creator of the open-source code search engine Zoekt, joins Beyang Liu, co-founder and CTO of Sourcegraph, to discuss the agonizing experience with Perforce that drove Han-Wen to build his first dev tool, explain the value of coding on trains and planes, and share the story of how building code search nearly inspired a street named after him in Sweden

How do you improve on C? In this episode of the Sourcegraph Podcast, Andrew Kelley, creator of the Zig programming language and the founder and president of the Zig Software Foundation, joins Beyang Liu, co-founder and CTO of Sourcegraph and special guest Stephen Gutekanst, software engineer at Sourcegraph, to talk about what it takes to create a new programming language.

How do you make security, a topic that often requires a PhD to understand, accessible to your average developer? In this episode of the Sourcegraph Podcast, Sam Scott, co-founder and CTO of Oso, a batteries-included library for building authorization into your application, comes on the podcast to explain to Beyang Liu, CTO at Sourcegraph, his vision for the future of security development.

What’s the future of feature flags? On this episode of the Sourcegraph Podcast, Brothers Ivar Østhus and Egil Østhus, co-founders of Unleash, join Sourcegraph co-founder and CTO Beyang Liu to discuss their open source project and open core company. In this episode of the Sourcegraph Podcast, Ivar and Egil talk about their histories in programming and open source, share the inspiration for turning a side project into a full-time job, and dissect the current state, as well as the future of, the feature flag market

How do you design software docs and websites that both intrigue and educate? As a contributor to popular projects like React Native, Jest, Prettier, and TypeScript, Orta Therox has prioritized design for visual engagement, accessibility, and learning. In this episode of the Sourcegraph Podcast, Orta talks about the importance of engaging docs, how experimentation fuels learning and engineering in TypeScript, and how developers can write better code examples with Shiki Twoslash, a project he developed and designed

On the eve of the pandemic, Christopher Chedeau was procrastinating performance reviews at Facebook and decided to hack together a simple drawing app. That weekend project became Excalidraw, an open-source virtual whiteboard so popular that its users have basically demanded a startup form around it so that they can bring it to work.

What’s it like to deconstruct one of the largest Rails codebases (3 million lines of code, 500,000+ lifetime commits, 40,000 files) on the planet? And why didn’t Shopify follow the standard path to microservices, but instead chose to modularize their monolith? In this episode, Kirsten Westeinde, software development manager at Shopify, describes how her team led the charge in refactoring and re-architecting Shopify's massive codebase, sharing the winding path they took to make this massive change and the way they tackled both the technical and human side of this challenge.

Devon Zuegel, the creator of GitHub Sponsors, tells the story of how an email rant to Nat Friedman on the eve of Microsoft's acquisition of GitHub turned into the most popular way to fund open source. She also shares her thoughts on different models of paying for software and where the future of the code economy is headed.

As an engineer at Puppet, CoreOS, and Google Cloud, Kelsey Hightower has been at the forefront of new deployment technologies over the past decade. Along the way, he has built tools like confd, created learning resources like Kubernetes The Hard Way, co-founded KubeCon, and taught multitudes of people about containers, infrastructure as code, service meshes, and the operating system of the cloud.

Peter Pezaris is the CEO and founder of Codestream, an editor plugin that's bringing code discussions and communication into your IDE. Codestream is starting by bringing GitHub PRs into your editor, but it has a novel vision for knowledge sharing that goes well beyond that. We talk about that vision, the shortcomings of existing communication tools for developers, and the challenges of building a uniform user experience on top of multiple editor APIs.

Andrew Gallant, creator of ripgrep Andrew Gallant (a.k.a. BurntSushi) is the creator of ripgrep, a popular command-line search tool that powers the search box in VS Code. Andrew tells me how ripgrep began, explains why it's faster than GNU grep and other grep alternatives, and gets into the nitty-gritty of regex optimization.

Syrus Akbary is the founder and CEO of Wasmer, the startup behind the open-source web assembly runtime that's doing for WebAssembly what Docker did for LXC. Syrus explains what WebAssembly is, why it matters outside your browser, and how it compares to other virtualization technologies. He shares the pains that motivated him to look into WebAssembly and eventually led him to create a new WebAssembly runtime and a new company around it.

Michael Stapelberg shares with us a multitude of experiences and contributions across the Go and Linux open-source communities. Highlights include creating the popular window manager i3, building Debian Code Search, and researching fast package management for Linux with distri. Thorsten Ball, author of Writing a Compiler in Go and Writing an Interpreter in Go, joins. The three of us talk about the importance of developer experience to open-source communities, how code search changes how you work, and how to decide when to build something new.

Matt Holt is the author of many popular projects in the Go open-source world, among them the popular Caddy web server, which pioneered support for HTTP/2 and might still be the only major web server to support automatic TLS by default. Matt talks about his motivations for creating Caddy, how the project grew and evolved over time, what it was like to do a complete rewrite from Caddy v1 to v2, and the challenges of maintaining a very popular open-source project. He also talks about his latest project, a TCP multiplexer called Project Conncept.

Thorsten Klein is the creator of k3d, a tool that lets you run a lightweight Kubernetes cluster (k3s) inside a single Docker container. This makes it much easier to spin up a Kubernetes cluster in places like your dev environment, your CI pipeline, or a low-resource environment like a Raspberry Pi.

Rijnard van Tonder is the creator of Comby, a pattern-matching syntax and command-line tool that offers a more expressive and more user-friendly alternative to regular expressions for many common patterns in code. Rijnard was previously a PhD student at Carnegie Mellon University, and we chat about the state of the art in static analysis and automated bug-fixing, new tools made in industry like Pyre and Sapienz, and what place machine learning has in the world of developer tools.

Dan Bentley is the CEO and co-founder of Tilt, a company that's bringing order back to the dev environment in the age of microservices and Kubernetes. It features smart rebuilds, live updates, an easy-to-use CLI, and a beautiful GUI dashboard for staying on top of what's happening in your multi-service dev environment.

Yves Junqeira and John Ewart are co-founders of YourBase, a build and test runner service that accelerates testing and CI by understanding the implicit dependency graph of your builds. YourBase integrates with most major build tools and employs system call analysis and static language analysis to infer the build dependency structure without the need for manual configuration. It then uses this information to parallelize and cache builds, yielding significant performance improvements. Yves and John reflect on their experiences working as SRE inside Google and SWE inside Amazon and how writing code is different inside these organizations, both compared to one another and to the rest of the world. They share lessons learned and advice for potential developer tool founders.

If you write code on the modern web, it's almost certain that your life has been shaped significantly by Luke Hoban's work. Luke has worked on developer tools his entire career. He started out on Visual Studio, C#, and .NET in the early 2000s, later joined the ECMAScript standards body as a representative of Microsoft, and then became one of the co-founders of the TypeScript programming language. Today, he is the CTO of Pulumi, an infrastructure-as-code company that lets you write your deployment config as code in your favorite language.

Evan Culver builds developer tools at Segment, a customer data platform that lets product managers and software teams understand their users through data. Evan's career has spanned many years up and down the software stack, from frontend UI development to infrastructure and ops. For the past five years, his focus has been developer tooling and infrastructure, having worked on these during his tenure at Uber during its hypergrowth years and now on the dev tools team at Segment, where his charter is to "empower the engineers of Segment with the tools to automate, optimize, and streamline their workflows."

Charity Majors is the founder and CTO of Honeycomb, an observability tool that combines logs, traces, metrics, and all the relevant data about the production state of your application into a single dataset that can be explored in one place. Charity tells Beyang about how Honeycomb derives its definition of observability for software systems from its original definition in control theory, and how observability differs from monitoring and logging. She shares war stories from her time keeping systems online at Facebook and Parse, gives her predictions about how the landscape of observability and monitoring tools will evolve, and discusses how developer tools can make programming more accessible to everyone.

Ryan Djurovich is a DevOps manager at Xero and former manager of the DevTools team at Cloudflare. He shares with Quinn how he has seen the landscape of Continuous Integration and Delivery (CI/CD) tools change over the years, the three waves of CI/CD, and where he thinks testing and build tools are headed in the future.

David Cramer talks about creating Sentry as an open-source side project, maintaining it while working full-time at Dropbox, and ultimately growing it into one of today's leading application error monitoring tools. We chat about the emergence of new computing platforms, his thoughts on what's truly new and what's just marketing-speak for old ideas, and how he sees the landscape of observability and monitoring tools evolving in the future.

Welcome to the Sourcegraph podcast, a new show about developer tools and their creators. Over the next couple of weeks, we'll be publishing conversations with people we think are some of the best and brightest minds working on tools and infrastructure for developers.