Rahul Malik of Pinterest joins John to talk about working on a large-scale iOS app, using third party build systems, client/server networking architectures and much more.

Brandon Williams and Stephen Celis, formerly iOS developers at Kickstarter and now hosts of Point-Free, join John to talk about functional programming in Swift, and how it can be used to build apps, websites, and even control the world.

Nick Lockwood, Core Animation veteran and creator of tools like SwiftFormat, joins John to talk about animations, layout, building parsers & compilers in Swift, declarative UI patterns and much more.

John heads to the Swift & Fika conference in Stockholm and, equipped with his portable recorder, speaks to four special guests about topics ranging from security to rendering performance to static analysis.

Felix Krause, creator of fastlane, joins John to talk about building developer tools, scaling open source projects, automation, code signing, how fastlane came to be, and how to take the perfect Twitter profile picture.

Sean Allen, YouTuber and host of Swift News, joins John to talk about sharing, creating content for the Swift community, mentoring and giving feedback, teaching new technologies, interviewing and much more.

Niels van Hoorn of Framer joins John to talk about prototyping, experimentation and learning new technologies. When and how to use prototypes, trying out new frameworks and techniques, the value of building your own tools and much more.

Peter Steinberger, creator and CEO of PSPDFKit, joins John to talk about building and maintaining a large framework project, how PSPDFKit came to be, how his team works with Radar, and all the challenges and excitement that comes with running a business based on a closed source SDK.

Ryan Nystrom of Instagram joins John to talk about data-driven UI development, working on open source, how to optimize performance, becoming an engineering manager and much more.

David Hart, regular contributor to the Swift Package Manager, joins John to discuss the present and future of the SwiftPM project - how to get started both using and contributing to it, and how it lets the community build tools on top of it.

Ben Scheirman, creator of NSScreencast, joins John for a special WWDC episode of the show - to talk about the cool new things that Apple announced at the conference. iOS 12's focus on performance, UIKit apps on the Mac, what's new in Xcode and Swift 4.2, and much more.

Carola Nitz joins John to talk about LLDB and debugging, her work on the open source VLC app, how she got her previous job at Apple, and much more.

Harlan Haskins and Robert Widmann - who are both regular contributors to the Swift compiler - join John to take a deep dive into the internals of Swift, its type system, the compilation process and how they used LLVM to build their own programming language.

Meghan Kane joins John for a special Machine Learning episode of the show - talking about how to get started with tools like CoreML and TensorFlow, what they can be used for, deciphering the terminology, how Swift might be used for ML tooling in the future, and much more!

Benedikt Terhechte joins John to talk about Mac development, working as an indie developer, code sharing between Apple's platforms, extending the standard library, system packages, and much more.

Radek Pietruszewski, software writer at Nozbe and creator of SwiftyUserDefaults, joins John to talk about developer seniority, being inspired by the React paradigm, singletons & dependency injection, micro features and much more.

Erica Sadun joins John to talk about Swift Evolution and its proposal process, civility in the community, the state of Apple's developer tools, protocol extensions, Swift Foundation vs Objective-C Foundation and much more.

Tanner Nelson, creator of the Vapor web framework, joins John to talk about the present & future of server-side Swift, designing Vapor's API, Apple's new SwiftNIO project, marrying the concepts of Swift with the web, and much more.

Janie Clayton, author of the Metal Programming Guide, joins John to talk about Metal, GPU & graphics programming, shaders, when to dive into lower levels of abstraction, and much more.

Sommer Panage joins John to talk about all things accessibility, adaptive UIs, learning new APIs, UI testing, her secret (well, not so secret) life as a circus artist, and much more.