📢 The Kotlin Multiplatform Contest deadline is January 12! Students and recent grads, this is your chance to win a trip to KotlinConf 2026 in Munich – with tickets and hotels covered. All valid entries receive Kotlin souvenirs! Take part ⤵️ kotl.in/cntst-rmdr

🌱 Spring Boot 4 is taking Kotlin support to the next level! Thanks to a Kotlin 2.2 baseline, deeper null-safety, better serialization, and coroutine context propagation, Spring is now even more Kotlin-friendly. Dive into the latest improvements 👉 https://kotl.in/im2t40

🎁 Holiday shopping hack – Buy a ticket to KotlinConf and enjoy: ✅ Loads of inspiration ✅ Talks that spark new ideas ✅ Some dev happiness Get one for yourself or a friend 👇 https://kotl.in/kc-gift-kbs

✨ Introducing the Golden Kodee Community Awards ✨ We’re celebrating the people who make the Kotlin community shine – educators, creators, organizers, and innovators. Think you deserve an award? 🏆 Nominate yourself now! → kotl.in/golden-kodee...

⭐ 🎤 Kotlin powers products at companies like Meta, AWS, Duolingo, Uber, and more. At KotlinConf'25, these teams revealed how they use Kotlin to solve real engineering challenges in production. Dive into their stories 👉 https://kotl.in/co3t0q

Need manager approval for KotlinConf? Use our ready-made templates and join us in Munich, May 20–22. 👉 https://kotl.in/ma-kbs

A clean, modern intro to Spring Boot with instant switching between Java and Kotlin examples. Worth a look if you’re comparing the two for your next project 👇 https://kotl.in/pkj849

Thinking of taking your Android app multiplatform? Together with the @androiddevs.bsky.social team and using Jetcaster as an example, we’ve created a migration guide that includes a repo where every commit represents a working state. 👉 https://kotl.in/g1q3h5

💡 Did you know? Ktor has a built-in test framework for REST APIs. Run tests in isolation, verify endpoints, and serialize types safely. Docs 👉 https://kotl.in/ktor-test

💸 Kotlin’s gaining traction in fintech! ING’s engineers rebuilt their core payment engine in Kotlin – improving code quality, speeding up delivery, and fostering a growing internal Kotlin community. 🎥 Watch the story: https://www.youtube.com/watch?v=mexcjkGZIm8

KotlinConf workshops dive into the most in-demand areas, including: ✨ Kotlin and Compose Multiplatform ✨ Backend with Spring and Ktor ✨ AI agents in Kotlin ✨ Coroutines ✨ Functional Kotlin 🗓️ May 20 • 📍 Munich Sign up today 👇 https://kotl.in/ws-2026-kbs

👀 We’ve been working on something big – and let’s just say, you had something to do with it. Stay tuned! 📮 https://kotl.in/gkodee-blu

📓 Kotlin Notebooks let you run server-side experiments inline: - query a DB - test Ktor APIs - prototype with coroutines. And more! Try it in @IntelliJIDEA https://kotl.in/cf07id

🚀 Build dynamic web apps without the SPA overhead! Anders Sveen shows how the combination of HTMX, Ktor, and kotlinx.html can simplify full-stack Kotlin. A must-watch! https://kotl.in/7stxd6

🚀 Benchmark smarter with kotlinx-benchmark and Kotlin Notebook! Load results as DataFrames, explore them interactively, and visualize performance with charts – all in one place. Learn more in the blog post 👇 https://kotl.in/6so8mf

🚨 Today: Kotlin Ecosystem AMA on r/Kotlin 🕒 3:00–7:00 pm CET Bring your Kotlin questions on language, multiplatform, backend, AI, libraries, docs, user research, and more 👇 https://kotl.in/reddit-ama

🚀 Spring + Kotlin coroutines: write sequential code that runs async. No more CompletableFuture chains or reactive overload. Docs 👉 https://kotl.in/u95jk8

New update to the Spring docs! 🎉 The “Consuming a RESTful Web Service” guide now includes examples in Kotlin and Java, with easy language switching via interactive tabs. Check it out 👇 https://kotl.in/vivgrq

❓Ask us anything about Kotlin, multiplatform, backend, libraries, docs, education, user research, and Kotlin + AI. Kotlin Ecosystem Reddit AMA on r/Kotlin 🗓️ Dec 11 · 🕒 3:00–7:00 pm CET 👇 Check out the topics and participants in the thread. https://kotl.in/dpkmdp

Start @kotlinconf.com with a full day of training led by Kotlin experts. 🗓️ May 20 • 📍 Munich Here's what you'll walk away with: 🔥 Six hours of hands-on experience 🎯 Direct feedback 📦 Prep materials 📜 A certificate of attendance Sign up today 👇 https://kotl.in/ws-2026-kbs

🚗 From two pilot projects to a Kotlin-first backend! Mercedes-Benz.​io refactored its Java-based systems with Kotlin to reduce boilerplate, speed up development, and enhance stability across its digital ecosystem. For more on Kotlin for backend 👉 https://kotl.in/server-side-landing-ms

KotlinConf’25 was one for the books – full rooms, big announcements, and a legendary party. 🎉 We’re still buzzing! ✨ Want to be part of the experience in 2026? 👉 Come write your own KotlinConf story: https://kotlinconf.com/

⚡ Kotlin coroutines simplify async programming on the server: ✔️ Structured concurrency ✔️ Cancellation ✔️ Clean, readable code Learn more 👇 https://kotlinlang.org/docs/coroutines-basics.html

🟢 Using Spring Boot with Kotlin results in less boilerplate and more clarity. With data classes and @​ConfigurationProperties, you get concise, immutable, and type-safe configuration objects that are easy to maintain. Get started with the official documentation 👇 https://kotl.in/3vlw6o

🎉 Join the Kotlin Ecosystem Reddit AMA! 🗓️ Dec 11, 3:00–7:00 pm CET 💬 r/Kotlin Chat with the Kotlin Ecosystem team about language updates, Kotlin Multiplatform, AI tooling, backend development, and more. https://www.reddit.com/r/Kotlin/comments/1pdvlft/kotlin_ecosystem_ama_december_11_37_pm_cet/

🔴 LIVE: The KMP Career Debate with mobile industry experts We are kicking off the finale with the "Reality Check" game. Are we all becoming "Mobile Engineers"? Is Multiplatform the new default? Join the discussion and ask your questions live: www.youtube.com/watch?v=B9-y...

Hot take: "In 5 years, the role 'Android Developer' won't exist. We will all be 'Mobile Engineers'." 📉📈 True or just hype? We’re debating this live with @zacsweers.dev, @zsmb.co, and mobile development experts. Secure your seat: jb.gg/vbl7v4.

🌱 Getting started with Spring Boot? Check out this "Hello, World!" RESTful web service guide, which now features Kotlin snippets alongside Java code, and choose for yourself which language to pick. https://kotl.in/gtvbjl

⚡ Amper 0.9.0 is here! ⚡ • First preview of extensibility and plugins • Dependency resolution graph caching • Auto-sync in the IDE (using IntelliJ IDEA 2025.3 Beta) Release notes 👉 kotl.in/amper090-github Blog post 👉 https://kotl.in/amper090

📢 If you’ve been meaning to send your KotlinConf 2026 talk proposal – this is your sign to do it now! The Call for Speakers is wrapping up tomorrow! Don’t miss the opportunity to share your expertise at the world’s largest Kotlin event. Submit here ⤵️ sessionize.com/kotlinconf-2...

🎄 Join us live for five days of Advent of Code puzzles and Kotlin livestreams on December 1–5! Solve puzzles in Kotlin with help from team experts and guest creators, climb the leaderboard, learn new tricks, and get a chance to win prizes along the way with fun!! 💜 blog.jetbrains.com/kotlin/2025/...

Exploring Kotlin docs just got smoother. Check out the new navigation! And…🥁 Kotlin Multiplatform docs have officially moved to kotlinlang.org. Switch between Kotlin and KMP with a single click and enjoy the refreshed docs experience. See for yourself! ⤵️

🐳 Ready to take your Ktor app live? With the Ktor Gradle plugin, packaging and deployment become simple and seamless. Check out this step‑by‑step guide to ensure smooth deployment 👉 https://kotl.in/tkzc0l

🗳️ Help us make Ktor better! 💬 Tell us what’s working, what’s missing, and what would make Ktor better for you. Your feedback will help shape the next improvements to the framework, docs, and tools. 👉 Take the survey https://surveys.jetbrains.com/s3/05ddc3ebe003

🖤 Black Friday, but make it Kotlin. 💜 ✨ Get 20% off KotlinConf 2026 tickets ✨ The offer is valid through November 30. 🎟️ https://kotl.in/conf26-blfr-bl 🎟️

Pebble going fully open source is a big win for hardware preservation. ⌚️🔓 But for mobile devs, the real story is in the repo. The new app is a pure KMP + Compose Multiplatform rewrite. 230k lines (Legacy Java/ObjC) ➡️ 37k lines (Kotlin) Shipped in 6 months with just 2 devs 🔥

🤔 Curious about Kotlin but worried about rewriting your Java code? No need – Kotlin and Java work seamlessly in the same Spring project. Start with a single service and expand from there. Check out our updated tutorial 👇 https://kotl.in/rzdau2

Week 3 of #KMPLevelUp is live! 🚀 We’ve curated the definitive KMP Watchlist. See how: 🦉 Duolingo ships to 40M+ users 🍔 McDonald’s shares navigation logic ⚡️ Meetup made their iOS app faster with KMP Get the playlist & register for the expert webinar ➡️ jb.gg/vbl7v4

Kotlin samples are now part of the official Spring tutorials! 🚀 Check out the Spring WebFlux guide to build a RESTful web service, and switch easily between Java and Kotlin examples ⬇️ https://spring.io/guides/gs/reactive-rest-service

See you at KotlinConf 2026! 😉

📹 Registration for our #KMPLevelUp career webinar is now open! Get your questions ready for legends like Jake Wharton, Zac Sweers, and other Android experts. And ICYMI, the 5-hour CMP crash course is the perfect weekend project. Register & watch here: jb.gg/vbl7v4

Spring Framework 7.0 has been released, bringing exciting updates for Kotlin users: 🟣 Kotlin 2.2 as the new baseline 🟣 Improved kotlinx.serialization support 🟣 Better Kotlin integration with JSpecify 🟣 Programmatic bean registration DSL Read more ⬇️ kotl.in/evnyly

📢 Help us improve Kotlin docs! Share your insights on Kotlin’s documentation to help us enhance your developer experience. ➡️ You'll need a Chromium-based desktop browser to take part in the study. Check if you qualify to participate in our research: https://surveys.jetbrains.com/s3/kotlin-docs-t

Boost your skills with hands-on workshops at KotlinConf'26! 🚀 👉 kotlinconf.com/workshops/ 👈

🤖 Ever wondered how AI agents work and why Kotlin is perfect for building them? In the new Talking Kotlin episode, @sebi.io and @zsmb.co chat with @vadim-briliantov.bsky.social, Technical Lead for Koog, JetBrains’ agentic framework for building AI agents in Kotlin. 🎧 https://kotl.in/dvygzb

Ready for a deep dive into Compose Multiplatform? 🚀 For Week 2 of #KMPLevelUp, we've partnered with Philipp Lackner to bring you a FREE 5-hour crash course. Want to go even deeper? Find the 30% discount for his premium course on our learning hub. Get both here ➡️ jb.gg/vbl7v4

⚡ The Kotlin Power-assert is now available for 🪶 Maven! The plugin makes debugging easier with detailed failure messages and no extra libs needed. Enable it in the <plugin> section of `kotlin-maven-plugin` in your `pom.xml`. Read more in the docs 👇 https://kotl.in/wtpugg

Not sure where to start with Kotlin Multiplatform and Compose Multiplatform? Here’s your roadmap📍 Week 1 of #KMPLevelUp drops the Course Matrix with: 📚 best learning paths 🎯 clear skill outcomes 🤝 picks from our Dev Advocates Start your journey: jb.gg/vbl7v4

🖼️ Animation tuning as an art form? At KotlinConf25, @nicole-terc.bsky.social showed us how to master AnimationSpec for custom animations. Catch the full session here: https://youtu.be/clDGqPfaIto?si=Fud8Tagdk8ZE2bPM

We’re getting closer to Exposed 1.0.0! 🎯 In RC-3, we focused on polishing and fixing bugs in previously delivered features (like R2DBC support and cleaner imports), and on updating and streamlining transaction management. Give it a try and share your feedback before the release! kotl.in/vow8yv