💡 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://t.co/ryKu1zJNp3

How can you see what your AI agent is actually doing? 👀 In part three of our blog series, we add observability using LangFuse tracing to our Kotlin coding agent, giving us step-by-step insights and clearer debugging. We even uncover a bug we didn't know about. Read more: 👉

📢 Kotlin 2.3.0 is out! Here are some of the highlights: ✅Language: More stable and default features, unused return value checker, explicit backing fields, and changes to context-sensitive resolution. ✅Kotlin/JVM: Support for Java 25. ✅Kotlin/Native: Improved interop through

👀 We’ve been working on something big – and let’s just say, you had something to do with it. Stay tuned! 📮 https://t.co/1vnr2TRqsi

In “Good Old Data,” Andrey Zaytsev shows how treating state, events, and effects as data enables reproducible, AI-driven systems. He even sketches a “coding agent” loop calling an LLM to fix code. 🎥 Watch the full talk here: https://t.co/YbcFDVTenL

Spring Boot 4 now has automatic context propagation for @Kotlin coroutines 🎉 Trace context flows inside coroutine execution, making async code simpler and ensuring seamless integration – all in the familiar Spring ecosystem. Try Spring with Kotlin 👉 https://t.co/ZmcSKoMbRF

🚀 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!

💸 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. For more on backend development with Kotlin, visit: https://t.co/YzELosn3Q1

Still writing Kotlin like it’s Java? JetBrains-certified trainer @JoseLuisGS_ shares what he’s seen real backend teams doing in 2025: the top Kotlin anti-patterns, how to fix them, and how to debug memory-hungry microservices. Read the full interview:

🚀 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 👇

Kotlin Notebook makes Advent of Code puzzles a breeze, thanks to: ✅ Interactive Kotlin ✅ 2D data handling with Multik ✅ Live visualizations ✅ Easy GitHub Gist sharing See how fun puzzle-solving can be ⤵️ https://t.co/iY971fqH6z

🚨 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://t.co/PXtRQ65Hhe

🚀 Spring + Kotlin coroutines: write sequential code that runs async. No more CompletableFuture chains or reactive overload. Docs 👉 https://t.co/XP4SR88sIj

When AI gets finance wrong, Kotlin keeps it real! In this KotlinConf talk, Enrique López Mañas shows how Kotlin notebooks and DataFrames help verify AI-generated portfolio models – catching errors that even LLMs can miss. 🎥 Watch it here: https://t.co/ieNdM92Ckp

You can build powerful AI-driven backends with Spring AI and Kotlin. Text and image generation, text-to-speech functionality, embeddings, and RAG – all supported. Start here👇

Learn how to write and structure prompts for LLMs using Spring AI and Kotlin. This tutorial covers core and knowledge-enhancing prompt types: • Zero-shot • Few-shot • Meta • Knowledge generation • Prompt chaining Check it out on GitHub!

🟢 Why do teams add Kotlin to Java and Spring projects? Key word: add. Most teams don’t rewrite everything. They start by introducing Kotlin in tests, a new module, or new services, and keep their existing Spring knowledge. Let’s break down why many* teams take this path (and

I turned a gaming handheld into a coding workstation. 🤯 ❌ No Keyboard ❌ No Mouse ✅ Just @IntelliJIDEA, @Kotlin Notebooks, and AI Watch me build a Pong game from scratch using only a gamepad and voice-to-text: https://t.co/GvpTrs803z

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 👇

📢 Kotlin 2.3.0-RC3 is out! Here are some of the highlights: ✅ Language: more stable and default features, a new checker for unused return values, and changes to context-sensitive resolution. ✅ Kotlin/Native: improved interop through Swift export and type checks on generic