How often does this podcast release new episodes?

This podcast updates bi-weekly.

Where can I listen to this podcast?

This podcast is available on 10 platforms including Apple Podcasts, Spotify, and more. You can also use the RSS feed directly.

Does this podcast accept guests?

Yes, this podcast regularly features guests.

Talking Kotlin

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by Talking Kotlin

4.7(49 reviews)

145 episodes

Updated Bi-weekly

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Podcast Overview

A bimonthly podcast that covers the Kotlin programming language by JetBrains, as well as related technologies.

Language

🇺🇲

Publishing Since

1/12/2017

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🇺🇸 Charts #3

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Podcast Authority

Beta

GoodBased on show quality, social media presence, reviews, charts, and more

Quality89

Social0

YouTube0

Engagement96

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Good Performance

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excellent

Episode Length

1h 3m

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needs improvement

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Every 22 days

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Recent Episodes

April 29, 2026

Exposed 1.0 and Beyond

The Kotlin ecosystem is full of powerful tools and frameworks — and in this episode of Talking Kotlin, we’re diving deep into Exposed, JetBrains’ Kotlin SQL library, which recently reached its 1.0 release.Sebastian and Márton sit down with Chantal from the Exposed team to explore what Exposed is, where it came from, and how it helps developers work with databases in a Kotlin-first way. From type-safe SQL DSLs and lightweight DAO support to JDBC, R2DBC, Ktor, Spring Boot, migrations, and future KMP plans — this episode covers the past, present, and future of Exposed.You’ll learn:What makes Exposed different from traditional ORMsHow the DSL and DAO APIs work togetherWhy Exposed 1.0 required a major architecture redesignHow R2DBC support enables non-blocking database accessHow Exposed integrates with Ktor and Spring BootWhat’s coming next: migrations, plugins, DAO improvements, and KMP supportThe surprisingly charming origin story behind the Exposed cuttlefish mascotWhether you’re already using Exposed or just looking for a Kotlin-friendly way to work with SQL databases, this episode is packed with practical insights and behind-the-scenes stories from the team building it.<a href="https://jb.gg/exposed" target="_blank" rel="ugc noopener noreferrer">Try Exposed</a> <a href="https://www.jetbrains.com/help/exposed" target="_blank" rel="ugc noopener noreferrer">Read the docs</a> <a href="https://slack.kotlinlang.org" target="_blank" rel="ugc noopener noreferrer">Join the discussion on Kotlin Slack</a> <a href="https://youtrack.jetbrains.com" target="_blank" rel="ugc noopener noreferrer">Report issues or share feedback on YouTrack</a>

March 5, 2026

How Major Metros Run on KMP

Every time you tap through a subway gate in New York City, you’re using Kotlin Multiplatform! In this episode, we sit down with Paweł Kwieciński from Masabi to explore how they brought a decade-old Java codebase to KMP, powering ticket validation across mobile apps, embedded devices, and backend systems for public transit agencies worldwide.Resources:<ul> <li><a href="https://www.masabi.com/" rel="ugc noopener noreferrer" target="_blank">Masabi</a></li> <li><a href="https://developers.google.com/j2objc" rel="ugc noopener noreferrer" target="_blank">J2ObjC (Java to Objective-C translator)</a></li> <li><a href="https://www.youtube.com/watch?v=5sOXv-X43vc" rel="ugc noopener noreferrer" target="_blank">Google Workspace Migration to Kotlin</a></li> <li><a href="https://www.youtube.com/watch?v=K2PN03AepC0" rel="ugc noopener noreferrer" target="_blank">Large Scale Changes with AI – Uber | Ty Smith</a></li> <li><a href="https://github.com/Kotlin/kotlinx-datetime" rel="ugc noopener noreferrer" target="_blank">KotlinX DateTime</a></li> <li><a href="https://ktor.io/" rel="ugc noopener noreferrer" target="_blank">Ktor (Client & Server)</a></li> <li><a href="https://github.com/square/burst" rel="ugc noopener noreferrer" target="_blank">Burst library (archived)</a></li> <li><a href="https://en.wikipedia.org/wiki/Java_Platform,_Micro_Edition" rel="ugc noopener noreferrer" target="_blank">Java ME (Micro Edition)</a></li> <li><a href="https://www.wolfssl.com/" rel="ugc noopener noreferrer" target="_blank">Mbed TLS</a></li> <li><a href="https://sqldelight.github.io/sqldelight/" rel="ugc noopener noreferrer" target="_blank">SQLDelight</a></li> <li><a href="https://www.jetbrains.com/lp/compose-multiplatform/" rel="ugc noopener noreferrer" target="_blank">Compose Multiplatform</a></li> <li><a href="https://www.jetbrains.com/ai/" rel="ugc noopener noreferrer" target="_blank">JetBrains AI Assistant & Junie</a></li></ul>Hosts:<ul> <li> Sebastian Aigner – <a href="https://sebi.io/" rel="ugc noopener noreferrer" target="_blank">Website</a> | <a href="https://bsky.app/profile/sebi.io" rel="ugc noopener noreferrer" target="_blank">Bluesky</a> </li> <li> Márton Braun – <a href="https://zsmb.co" rel="ugc noopener noreferrer" target="_blank">Website</a> | <a href="https://bsky.app/profile/zsmb.co" rel="ugc noopener noreferrer" target="_blank">Bluesky</a> </li></ul>Guest:<ul> <li>Paweł Kwieciński</li></ul>Timeline: (0:00) Introduction (1:12) What is Masabi? (3:03) How does Kotlin fit into this? (6:30) System architecture overview (8:33) Embedded SDK and mobile apps (10:33) Ticket inspectors and validators (13:22) Offline operation (16:29) The KMP decision (24:42) Evaluating alternatives (27:21) Planning the migration (33:28) First lines of Kotlin (43:45) Translating Java to Kotlin (53:22) AI-assisted code translation (56:39) Early AI era challenges (1:05:01) Testing challenges (1:08:22) KMP dependencies (1:11:34) Domain-specific dependencies (1:16:55) Java ME and C interop (1:23:22) Backend-client sharing (1:26:59) Current status (1:31:48) Future plans: CMP (1:36:26) Wrap-up

February 3, 2026

Kotlin 2.3 Release Special (Audio Exclusive)

Sebastian and Márton host a special, audio-only episode where they discuss everything that’s new and noteworthy in the Kotlin 2.3 release. They touch on new language features like the unused return value checker and explicit backing fields, previously added features that became stable in this release, new APIs for time and UUID handling in the standard library, and improvements across all Kotlin platforms — from Native to Wasm and JS.Resources:<ul> <li><a href="https://kotlinlang.org/docs/whatsnew23.html" rel="ugc noopener noreferrer" target="_blank">What’s new in Kotlin 2.3</a></li> <li><a href="https://kotlinconf.com/" rel="ugc noopener noreferrer" target="_blank">KotlinConf</a></li> <li><a href="https://kotlinconf.com/awards/" rel="ugc noopener noreferrer" target="_blank">Golden Kodee Community Awards</a></li></ul>Hosts:<ul> <li> Sebastian Aigner – <a href="https://sebi.io/" rel="ugc noopener noreferrer" target="_blank">Website</a> | <a href="https://bsky.app/profile/sebi.io" rel="ugc noopener noreferrer" target="_blank">Bluesky</a> </li> <li> Márton Braun – <a href="https://zsmb.co" rel="ugc noopener noreferrer" target="_blank">Website</a> | <a href="https://bsky.app/profile/zsmb.co" rel="ugc noopener noreferrer" target="_blank">Bluesky</a> </li></ul>Timeline: (0:00) Intro (1:13) <a href="https://kotlinlang.org/docs/whatsnew22.html#support-for-nested-type-aliases" rel="ugc noopener noreferrer" target="_blank">Nested type aliases (stable)</a> (1:46) <a href="https://kotlinlang.org/docs/whatsnew2220.html#support-for-reified-types-in-catch-clauses" rel="ugc noopener noreferrer" target="_blank">Data-flow based exhaustiveness checks (stable)</a> (3:28) <a href="https://kotlinlang.org/docs/whatsnew2220.html#support-for-return-statements-in-expression-bodies-with-explicit-return-types" rel="ugc noopener noreferrer" target="_blank">Return statements in expression bodies</a> (4:19) <a href="https://kotlinlang.org/docs/whatsnew23.html#unused-return-value-checker" rel="ugc noopener noreferrer" target="_blank">Unused return value checker (experimental)</a> (12:57) <a href="https://kotlinlang.org/docs/whatsnew23.html#explicit-backing-fields" rel="ugc noopener noreferrer" target="_blank">Explicit backing fields (experimental)</a> (18:51) <a href="https://kotlinlang.org/docs/whatsnew23.html#changes-to-context-sensitive-resolution" rel="ugc noopener noreferrer" target="_blank">Context-sensitive resolution (experimental)</a> (20:11) <a href="https://kotlinlang.org/docs/whatsnew23.html#standard-library" rel="ugc noopener noreferrer" target="_blank">Clock and Instant in the standard library (stable)</a> (21:52) <a href="https://kotlinlang.org/docs/whatsnew23.html#improved-uuid-generation-and-parsing" rel="ugc noopener noreferrer" target="_blank">UUID v7 support and better parsing</a> (26:14) <a href="https://kotlinlang.org/docs/whatsnew23.html#kotlin-jvm-support-for-java-25" rel="ugc noopener noreferrer" target="_blank">Java 25 bytecode</a> (26:36) <a href="https://kotlinlang.org/docs/whatsnew23.html#faster-build-time-for-release-tasks" rel="ugc noopener noreferrer" target="_blank">Faster Native release builds</a> (27:45) <a href="https://kotlinlang.org/docs/whatsnew23.html#improved-interop-through-swift-export" rel="ugc noopener noreferrer" target="_blank">Swift Export: enums and varargs</a> (29:08) <a href="https://kotlinlang.org/docs/whatsnew23.html#c-and-objective-c-library-import-is-in-beta" rel="ugc noopener noreferrer" target="_blank">C and Objective-C library import (beta)</a> (30:49) <a href="https://kotlinlang.org/docs/whatsnew23.html#changes-to-apple-target-support" rel="ugc noopener noreferrer" target="_blank">Apple target support changes</a> (32:15) <a href="https://kotlinlang.org/docs/whatsnew23.html#fully-qualified-names-enabled-by-default" rel="ugc noopener noreferrer" target="_blank">Fully qualified names in Kotlin/Wasm</a> (34:10) <a href="https://kotlinlang.org/docs/whatsnew23.html#new-exception-handling-proposal-enabled-by-default-for-wasmwasi" rel="ugc noopener noreferrer" target="_blank">New exception handling for wasmWasi</a> (35:32) <a href="https://kotlinlang.org/docs/whatsnew23.html#new-export-of-suspend-function-with-jsexport" rel="ugc noopener noreferrer" target="_blank">Suspend function export to JS</a> (37:51) <a href="https://kotlinlang.org/docs/whatsnew23.html#usage-of-the-bigint64array-type-to-represent-kotlin-s-longarray-type" rel="ugc noopener noreferrer" target="_blank">LongArray export to JS</a> (38:40) <a href="https://kotlinlang.org/docs/whatsnew23.html#unified-companion-object-access-across-js-module-systems" rel="ugc noopener noreferrer" target="_blank">Unified companion object access in JS</a> (41:05) <a href="https://kotlinlang.org/docs/whatsnew23.html#support-for-jsstatic-annotations-in-interfaces-with-companion-objects" rel="ugc noopener noreferrer" target="_blank">@JsStatic inside interfaces</a> (41:43) <a href="https://kotlinlang.org/docs/whatsnew23.html#support-for-javascript-default-exports" rel="ugc noopener noreferrer" target="_blank">Default exports in JS</a> (43:45) <a href="https://kotlinlang.org/docs/whatsnew23.html#compose-compiler-stack-traces-for-minified-android-applications" rel="ugc noopener noreferrer" target="_blank">Compose stacktraces for minified Android apps</a> (45:23) <a href="https://kotlinlang.org/docs/whatsnew23.html#breaking-changes-and-deprecations" rel="ugc noopener noreferrer" target="_blank">Breaking changes 🐜</a> (46:14) <a href="https://kotlinlang.org/docs/whatsnew23.html#documentation-updates" rel="ugc noopener noreferrer" target="_blank">Documentation updates</a> (47:24) <a href="https://kotlinconf.com/" rel="ugc noopener noreferrer" target="_blank">KotlinConf, Golden Kodees Awards</a> (48:11) Wrap-up

145 total episodes available

Recent guests on Talking Kotlin

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Joop Korteweg

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John O'Reilly

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Konstantin Tskhovrebov

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Tadeas Kriz

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What is Talking Kotlin?: A bimonthly podcast that covers the Kotlin programming language by JetBrains, as well as related technologies.
How often does this podcast release new episodes?: This podcast updates bi-weekly.
Where can I listen to this podcast?: This podcast is available on 10 platforms including Apple Podcasts, Spotify, and more. You can also use the RSS feed directly.
Does this podcast accept guests?: Yes, this podcast regularly features guests.

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