Lutske de Leeuw

Lutske de Leeuw smiling with her speaker badge in front of the jfokus logo

🎤 Speaker badge on at @jfokus.se 🇸🇪
Today’s the day!
🕐 13:00 – Room A4
Tame your Llama: run AI in Java 🤖☕

If you’re around, come say hi or join the session!
Who’s already here? 🔥

Jfokus logo with some digital snow and some sponsors. To the right Lutske de Leeuw is smiling because she's happy to be there!

Just arrived in Sweden 🇸🇪❄️
-8°C, no snowstorm (yet!) and sooo excited!

The next days: @jfokus.se 💙
Tue 13:00 Room A4 – Tame your Llama: run AI in Java
Wed 10:10 mentorship on building strong Java User Groups

Who’s already here? 🚀

Illustration in a Norse mythology style showing a llama wearing a Viking helmet, seated at a wooden table with three Java Duke mascots. One Duke wears a Viking helmet, one has a pink bow, and one has no headwear. They sit in a Viking hall with firelight, shields, swords, candles, and mugs, creating a festive JFokus 2026 atmosphere.

Excited for @jfokus.se 🎉
Next week already: my Tame your Llama talk on Tuesday 🦙
and a JUGs mentorship on Wednesday

More info about the talk here: www.jfokus.se/talks.html?s...
Register for the mentorship here: jav.mn/hub-jfokus-r...

See you there 👋

#TameYourLlama #Jfokus #JUG #KnowledgeSharing

Festive winter illustration with falling snow. A smiling llama wearing a Santa hat and scarf stands next to Duke, the Java mascot, and Santa Claus. They are surrounded by wrapped presents and snow-covered trees. Text reads: ‘Merry Christmas and a Happy and Healthy 2026! Best wishes, Lutske

Wishing everyone happy holidays and a healthy 2026 🎄

Thanks for being part of my year!

A Sinterklaas treat with kruidnoten, chocolate kruidnoten and more chocolate wrapped in foil with a red ribbon on a grey background.

Got a Sinterklaas treat box from work ( @craftsmennl.bsky.social ) today 🎁✨

Sinterklaas has always been my favourite holiday, so this absolutely made my day.
Chocolates at the office? Yes please 🍫😄

Anyone else get something fun from their employer this Sinterklaas season? 🎅✨

Trying to catch up on this year’s #CraftingAIAdventOfPrompt already behind, whoops 😅

But today I added a new friend to the scene: a cheerful Christmas-ready lion joining Hugo and Chipper in their cozy countdown corner.

Loving how these little AI-generated characters come to life! 🎄🦁✨

🇫🇷 Bonjour from #NewCrafts Paris!

AI and GenAI are cool, but today I’m taking it back to basics. Machine Learning 101 (with a few cats included 🐱).

Let’s talk code, coffee, and croissants ☕🥐

In this insightful interview at JNation 2025, Lutske de Leeuw talks with Andres Almiray about how Java developers can run local LLMs in their applications us... Interview with Lutske De Leeuw - JNation 2025

“Java is here to stay — maybe forever, or at least our lifespan.” .
In her chat with Andres Almiray, Lutske de Leeuw shows how Java developers can make AI their own, with tools like LangChain4j and a strong community backbone.
#JNation #Java #AI #LLMs #LangChain4j

Lutske de Leeuw holding her speakers badge in front of the voxxed days Luxembourg 2025 poster. With the 4 houses in a magic harry potter inspired theme.

Today at @lu.voxxeddays.com 16:00 in the NT room. Tame your llama, Run AI in Java!

Get ready for live demo's, Llamas and more tech fun!

Do I see you there?

Thank you!

Thank you @hansolo.eu 😄😁☺️and @johanhutting.bsky.social 😃😁☺️🥳

Lutske de Leeuw showing her Jspring speaker badge in front of the welcome banner.

Arrived at jspring @nljug.bsky.social Do I see you there (during my session)?

A blurry photo of Lutske de Leeuw and the audience during JNation 2025. Everybody is smiling and raising or waving their hand to be in the picture.

Lutske de Leeuw raises her hand to ask the audience to answer the question on the screen. During her Jnation talk "Tame your llama, get AI in Java" The room is light and you see the audience listening carefully with every seat is taken.

Lutske de Leeuw smiling and doing thumbs up just before the presentation in a green dress behind her stickered laptop and the JNation stand with an owl with a rock guitar. In the back you see a Jnation flag and a part of the big screen.

Had an amazing time at @jnationconf.bsky.social! Met so many inspiring people, learned a ton, and shared stories about AI in Java. Thanks to everyone who made it unforgettable. See you next time!

#Jnation #craftsmen #speaker #KnowledgeSharing #networking

Lutske de Leeuw is live at JNation 2025 with: “Tame your Llama, run AI in Java”.
A practical session on integrating AI models into Java projects — and making it useful, not just impressive.
#JNation #Java #Coimbra #AI #LLMs #MachineLearning

Lutske de Leeuw smiling while taking a picture with the audience during her talk "Tame your llama, Run AI in Java" at J on the beach. The audience (~150 people) is sitting on white chairs and are smiling, waving and cheering.

Java ☕, LLMs 🧠 & a sunny stage in Málaga ☀️
Yesterday's talk at J On The Beach went great. Demos worked, fun crowd, and lots of good conversations. Still around today if you want to chat about local AI in Java!

#JOTB25 #Java #LLM #ollama #Craftsmen #Speaker

Rijo Sam smiling and telling stories about "Tulips to Turmeric" in front of a big screen stating 'The retrospective' with an image of sticky notes and blue pens. In front of the JUGNoord attendees.

Hanno Embregts playing guitar. In front of him is a music standard for the microphone and a high table with an apple laptop on it. Behind him is a big screen with a cool photo that was taking during his key note at Devoxx Belgium a couple years ago. On the left you see some attendees from the JUGNoord event in the DUO building.

Had burritos, swapped culture stories, and ended up singing “Stairway to Heaven” with a room full of Java devs. Not your average @jugnoord.bsky.social night.
Shout-out to @rijosam.com & @hanno.codes for the laughs, lessons, and live music. 💙🎸

#JUGNoord #Java #DevLife #SoftSkills

Our @jugnoord.bsky.social April event is live. RSVP now!

With talks from @hanno.codes and @rijosam.com

Sign up here: www.meetup.com/jug-noord/ev...

YouTube video by Devoxx Java 24: A story about code, conflicts and conquer by Lutske de Leeuw

The @amsterdam.voxxeddays.com video's are already online! If you missed my talk for whatever reason or just want to watch it back: www.youtube.com/watch?v=I1xb...

#VDAMS25 #voxxedAmsterdam #Speaker

It was great talking at @amsterdam.voxxeddays.com If you want to know more about jep 485 stream gatheres @piotrprz.bsky.social will give a deep dive of it at 15:00 in Room 12

#VDAMS25

Arrived at @amsterdam.voxxeddays.com ! Super exited to talk about java 24 in Room 2 at 10:25
See you there!

#VDAMS25

Love that the "it worked on my machine" is the most damaged one. 😜
I've been places, this laptop is going places, starting tomorrow. 😉

A laptop with a lot of stickers on it, from Java's duke, cats, rubber ducks and more computer related stuff. Surrounded by other stickers, peeled off stickers.

📧 𝐉𝐮𝐬𝐭-𝐢𝐧-𝐓𝐢𝐦𝐞 (𝐉𝐈𝐓) 𝐒𝐭𝐢𝐜𝐤𝐞𝐫-𝐢𝐧𝐠! 💌

I just couldn’t bear to bring a clean-slate laptop to my presentation tomorrow at @amsterdam.voxxeddays.com so here it is, (almost) fully decorated! 🚀🎉 Still some room left for more, of course. 😁

Show me your stickered laptop! 💻✨ Drop a pic in the comments!

⏰𝐂𝐨𝐮𝐧𝐭𝐢𝐧𝐠 𝐝𝐨𝐰𝐧 𝐭𝐨 @amsterdam.voxxeddays.com 🔭

I’m beyond excited to be speaking at this amazing Java conference! In this video, I share why I’m looking forward to it.

If you haven’t got your ticket yet, get yours here: amsterdam.voxxeddays.com! 🎟️

Who is also there this Thursday?

Roy Wasse starting his talk about "How good of a developer are you?" at the JUG Noord. In front of a screen with a presentation, a microphone, camera for the live stream and a laptop.

Jos Roseboom presenting his talk about Spring Modulith. He is in front of a screen that says "Structure" in a big font. You see also the firs row of attendees of the JUG Noord.

A room with ~22 people who where listening to Jos Roseboom during his talk about Spring Modulith at the JUG Noord. The attendees are sitting in colourfull chairs and on the screen is a slide with a happy vs a sad developer. Jos stands next to the screen.

🚀 Had a great time at @jugnoord.bsky.social !

🔹 @roywasse.bsky.social explored better ways to measure Java skills
🔹 @josroseboom.bsky.social showed how Spring Modulith simplifies code
🔹 Live-streamed to ING Back-End Summit + amazing food! 🍰

Join us next time! www.meetup.com/jug-noord/

He said Hi back 😀

Sander ten Brinke introducing Lutske de Leeuw to give her talk about Machine Learning 101

Lutske de Leeuw showing python code how to read data from a .csv in a jupyter notebook

Speakers and host from WebDev Zwolle. From Left to right: Rowdy Rabouw, Lutske de Leeuw, Dennis Doomen, Sander ten Brinke, Danielle Oosten All helding a flower bouquet as speakers gift.

🚀 𝗪𝗲𝗯𝗗𝗲𝘃 𝗭𝘄𝗼𝗹𝗹𝗲 𝐱 𝐖𝐢𝐧𝐝𝐞𝐬𝐡𝐞𝐢𝐦🚀

What an inspiring evening with 70 tech enthusiasts! Danielle Oosten talked internships, Lisa Hoving delved into neurodiversity, and I made machine learning accessible. @dennisdoomen.com explored .NET frameworks

Thanks to Sander ten Brinke for hosting!

Almost starting at WebDevZwolle by Arcady

🚀 Join us for our next @jugnoord.bsky.social event in Leeuwarden!

🗓 20-3-2025 | 🕓 Doors open at 16:30
🍽 Dinner included

🔧 @roywasse.bsky.social : How good of a developer are you?
📦 @josroseboom.bsky.social : Simplify your Spring projects with Modulith

👉 RSVP here: www.meetup.com/jug-noord/ev...

Bouke Nijhuis presenting TDD & generative AI: a perfect pairing? in front of almost 50 attendees at the ApeldoornJUG.

Lutske de Leeuw opening the ApeldoornJUG in front of almost 50 attendees

Andres almiray starting his presentation about Building AI powered applications with Java. In front of almost 50 attendees at the ApeldoornJUG

Ko Turk and Andres Almiray ready to start the raffle rain at the ApeldoornJUG. They gave away Oracle goodies, tickets for Voxxed Days Amsterdam.

🚀 What a night at @apeldoornjug.bsky.social !🚀Great talks from @boukenijhuis.bsky.social on TDD & GenAI and @andresalmiray.com on AI-powered Java apps. Raffles, networking, and stamppot. Huge thanks to @craftsmennl.bsky.social for sponsoring! See you next time!

#ApeldoornJUG #Java #AI #Network

Last call to register for the @apeldoornjug.bsky.social event in February!