Adrian Nowak

GeeCON co-founder & Polish JUG co-leader

[geecon @GeeCON]

The photos from #geecon are now available!
Check out the photo gallery and relive some of the best moments:
https://t.co/Y45cSzzVQe
https://t.co/YoVKVbIHao

[geecon @GeeCON]

#geecon is more than just talks.

Join expert-led panel discussions, explore real-world use cases, and hear diverse perspectives from top speakers shaping modern software development. From AI Agents to architecture, performance, and beyond — this is where ideas meet practice.

⏳ Only 7 days left to register!
📆 14–15 May 2026, Kraków, Poland
👉 https://t.co/Yye8NPdxMJ

#AI #Java #JVM #Cloud #Architecture #Performance #PanelDiscussion

[geecon @GeeCON]

Technical debt: we all hate it… yet we all live with it.

Join Tomer Gabel (@tomerg) for “Mob Rules, or: how I learned to Stop Worrying and Love Technical Debt” — a sharp, honest dive into why debt happens, why we argue about it, and how to actually move forward.

Less dogma. More clarity.
https://t.co/LlilUdSotb

[geecon @GeeCON]

🎸 Meet our keynote speaker: Dylan Beattie!

“How To Be a Rockstar Developer” is more than a talk — it’s a journey from a joke programming language inspired by Bon Jovi lyrics to a global phenomenon.

Expect code, creativity, and a live guitar performance 🤘

This is one keynote you don’t want to miss. #geecon #keynote #RockstarDeveloper

https://t.co/tNtn9dTAlm

[geecon @GeeCON]

🚀 Live coding session you don’t want to miss!

Julien Topçu & Thomas Pierrain will show how to turn a spaghetti monolith into a microservices-ready modular monolith using the Hive pattern 🐝

From legacy chaos → clean architecture → extracting real microservices.

#Microservices #SoftwareArchitecture #LiveCoding
https://t.co/HM26nI2W3m
https://t.co/aukaFw0wI1

[geecon @GeeCON]

Meet Mihaela Gheorghe-Roman, Software Architect at Systematic & Oracle ACE Associate, bringing 14+ years of experience in Java and beyond 🚀

Dive into a live, interactive session full of tricky Java snippets, surprising behaviors, and “aha!” moments.

🧩 Expect quizzes, audience participation, and hands-on problem solving — all designed to level up your Java skills. Don’t miss it!

https://t.co/YCsSNou1cc

[geecon @GeeCON]

Baruch Sadogursky (@BSadogursk88555) is bringing some much-needed reality check to AI coding agents 🤖

“If your AI keeps agreeing with you even when you’re wrong you’ve got a context problem.”

In this talk, you'll learn how to:
• turn prompts into reusable system context
• make agents less “nice” and more correct
• use guardrails, tests & deterministic flows effectively

“You’re Absolutely Right (and Other Lies My AI Told Me)” - don’t miss it.

https://t.co/UjXE6i8Usa

[geecon @GeeCON]

Troubleshooting production is getting harder as AI speeds up delivery. But AI alone isn’t enough.

Learn how Aviva Peisach (@WixEng) & Yasmin Dunsky (Wild Moose) turned tribal knowledge into AI-powered playbooks — cutting MTTR and reaching 80% accuracy.

Join: Troubleshooting Production with AI @ Scale
https://t.co/B9A0Z7nqzw
https://t.co/zZsdXo6RWb

#geecon #DevOps #SoftwareEngineering #AI

[geecon @GeeCON]

AI pair programming: hype or real help? 🤔

Thomas Sundberg (@thomassundberg) will share practical lessons from pairing with Claude while practicing TDD & BDD.

Real examples. Honest conclusions. What should developers realistically expect? #geecon #AI #TDD

https://t.co/V7F31e13z5

[geecon @GeeCON]

AI Agents are reshaping software development.
Meet top experts, explore real-world use cases, and get inspired by what’s next.
Join the AI Agents era with #geecon!

📆 14-15 May 2026, Kraków, Poland
👉 https://t.co/C9DOz1HX3s

#AI #Java #JVM #Cloud #Architecture #Performance

[geecon @GeeCON]

Meet our speaker @AdamBien with a powerful talk: “The 50x Developer: Java’s Unfair Advantage in the Age of AI Agents”

Live coding with #AI #agents, real prompts & real mistakes. Why Java’s specs, patterns, and 25+ years of conventions make AI-generated code actually maintainable.

https://t.co/G6zJU6PmVS

[geecon @GeeCON]

Learning modern Java doesn’t have to be scary.
Java Champions @MaritvanDijk77 & @piotrprz will show how to explore features like Structured Concurrency and Stream Gatherers the playful way — directly in your IDE.
Learn, experiment, and have fun with modern Java! 🚀
https://t.co/arnmiPYIZY
https://t.co/kLRbcQLusD

[geecon @GeeCON]

🚀 “Scotty, I need warp speed!”
Java Champion Gerrit Grunwald (@hansolo_) explores modern ways to turbo-charge JVM startup & warmup — from CRaC and Native Image to Leyden, InstantOn & more.
No silver bullets, just smart choices for scale.
https://t.co/bdHbt5s75E

[geecon @GeeCON]

What if non-player characters (NPCs) could think, talk, and evolve?
Alexander Chatzizacharias (@glyc1n) shows how multimodal RAG (text, images, audio) can bring game worlds to life — and what backend engineers can learn from it. LangChain4j, AI villages & absurd fun included!
https://t.co/BCoZJNwChj

[geecon @GeeCON]

Business won’t wait — and neither should your platform.
Java Champion Marcin Grzejszczak (@MGrzejszczak) will share a real-world case on how platform teams turn infrastructure from a bottleneck into a business enabler.
Faster, safer delivery starts here.
https://t.co/D5wjaULfnD

[geecon @GeeCON]

⌛️ Last day of CFP for @GeeCON!
This is it — final hours to submit your talk and be part of #geecon.
Don’t let “I’ll do it later” turn into “maybe next year”.
🎙️ Submit now. Last chance.
👉 https://t.co/zDPGLHTRNF

[geecon @GeeCON]

⏰Last 3 days of #CFP for #GeeCON!
Don’t miss your chance to share your ideas, stories, and experience with an amazing community of developers.

Submit now 👉 https://t.co/zDPGLHTRNF

[geecon @GeeCON]

GeeCON is all about inspiring each other.
Share your knowledge as a speaker or join us to learn from the best at GeeCON 2026 in Kraków.
👉 https://t.co/C9DOz1HX3s
#GeeCON #Java #JVM #Community #AI #FP #Cloud #Architecture #Performance

[geecon @GeeCON]

Welcome back Steve Poole (@spoole167)! 👋
Developer Advocate, DevSec Champion, DevOps Lead, open-source committer and true greybeard.
In “The Enemy Within: How AI is Weaponizing Your Code”, Steve exposes the dark side of AI-generated code - from poisoned models to supply-chain attacks - and shows how to defend your software before it’s too late.
#geecon #AI #SoftwareSecurity https://t.co/5x7zb3xc1H

[geecon @GeeCON]

#geecon is now open for #CFP submissions for the 2026 edition, happening on May 14–15! Step in, share your story, and inspire the community — submit your talk proposal on #Java, #AI, #SoftwareEngineering, #Microservices, #Cloud, #SoftwareCraftsmanship, or #Agile.
👉 https://t.co/ktVGpnPTTs