Matthias Haeussler

chief technologist @novatecgmbh (ex ibm r&d), cloud-native focus, ambassador @cloudfoundry & stuttgart meetup organizer, frequent speaker & university lecturer

[Matthias Haeussler @maeddes]

@bsideup I just checked. They are fairly uncommon for Canon EF mounts (unfortunately), which means I can't get it. But your photos are very convincing :-)

[DevoxxUK @DevoxxUK]

Newsflash: Devoxx UK is not your average conference!

We go above and beyond to create a happy, inclusive vibe so you’ll leave not only having learned a LOT, but with a big smile on your face too.

Come and see what we mean.

https://t.co/LV3KiGVKh0

6th & 7th May | London

[DevoxxUK @DevoxxUK]

Observability & Flags

If you can't see it, you can't fix it:
🔹 @maeddes & @tiffanyfayj - Hello World, Meet the Spanimals: Observability for Beginners.
🔹 @CarlyLRichmond - Observing AI Applications with OpenLit.
🔹 Simon Schrottner - Feature Flagging Without the Pain.

[Nicolas Fränkel 🇪🇺🇺🇦🇬🇪 @nicolas_frankel]

My talk on #YOW2025 🐨🦘🪃🇦🇺 with special bits of @maeddes @simonbrown @mfeathers @royvanrijn inside

Thanks to the amazing team for an amazing time!

https://t.co/tvDJs3Atcz

[Matthias Haeussler @maeddes]

@Rosenlippengirl @yanashin18618 😅

[Matthias Haeussler @maeddes]

@cat_edelveis so cool. Enjoy it!

[Spring I/O @spring_io]

🍃 What's (new) with Spring Boot and Containers? by @maeddes / Eva Panadero @ Spring I/O 2025

▶️ Video: https://t.co/0jnz6YzfNU

🔗 Slides: https://t.co/svxQ4hs9fj

🛠️ Repo: https://t.co/dvfmdsXxob #springio25

[Matthias Haeussler @maeddes]

@piotrprz @Sharat_Chander Happy Birthday from me as well! 🥂🥳

[Fabian Bahle @funfried84]

War wie immer eine Freude dir zuzuhören! Sehr guter Vortrag über Container und Spring Boot von @maeddes auf dem #jfs2025

[Matthias Haeussler @maeddes]

@sergialmar @spring_io Camp Nou? 🤩

[Matthias Haeussler @maeddes]

@sKriemhild @VoxxedCERN @Docker @java @Paketo_io @Devoxx 🤗

[Matthias Haeussler @maeddes]

For reasons I don't understand my video from @VoxxedCERN got as many likes and views in a day that I normally get within a year.

Hope you like it, too 😇 Happy weekend!

@Docker @java @Paketo_io @Paketo_io @Devoxx

#container #build #voxxed

https://t.co/fImMno13VZ

[Romano Roth @RomanoRoth]

🚀 𝐎𝐎𝐏 2025 - 𝐃𝐚𝐲 4🚀

Today marked the fourth and final day of @oop_conference 2025. So many inspiring talks, thought-provoking discussions, and deep dives into the future of software engineering.

Here are some of my key takeaways from today's sessions:

🎤 Effektives Platform Engineering – @markus_zm
#PlatformEngineering is a game-changer for modern software development, enabling teams to move faster while ensuring security and compliance.
KEY TAKEAWAYS:
💡 The CNCF Maturity Model provides a structured approach to evolving internal developer platforms.
📊 Four maturity levels across five dimensions help teams optimize their platforms.
🛠️ Practical examples showcased how organizations can assess and improve their platforms effectively.

🎤 Codespaces, Gitpod, Devpod ... what cloud-based IDEs can do – @maeddes
Cloud-based development environments are rapidly reshaping the way we build software.
KEY TAKEAWAYS:
💡 #Gitpod, #GitHub #Codespaces, and #Devpod are revolutionizing development workflows.
🚀 Instant setup means faster onboarding, better collaboration, and seamless CI/CD integration.
🖥️ Live demos showed how to develop and deploy polyglot applications in a fully containerized environment.

🎤 GenAI-Bot-Entwicklung: Challenge Accepted – Tessa Pfattheicher & Lars Orta
#GenerativeAI powered chatbots are not just another software project. They introduce new challenges for PO’s, BA’s, and developers alike.
KEY TAKEAWAYS:
🤖 "Garbage in, garbage out" – #DataQuality is crucial for GenAI success.
🧩 AI projects require a shift in mindset: traditional deterministic testing doesn’t apply.
🔄 Experimentation & user feedback loops are key to refining AI-driven experiences.

🎤 From Perfect Surfaces to Virtual Twin Experiences – Sven Havemann
@Dassault3DS has evolved far beyond CAD software, pioneering #VirtualTwin Experiences.
KEY TAKEAWAYS:
🚗 Class A surfacing techniques define the visible design of modern cars.
🌍 #3Dtechnology is now integral to managing the real world through simulations.
🔗 Dassault Systèmes is much more than just CATIA – it’s shaping the future of digital twins across industries.

🎤 From Zero to PROD in 20 Minutes? Securely! – @MirkoQuarg & Kay Thriemer
Deploying #BSI -compliant cloud infrastructure for critical sectors (KRITIS) is no trivial task!
KEY TAKEAWAYS:
🔐 Policy enforcement with #Kubewarden, OPA/ #Gatekeeper, #Kyverno ensures compliance.
📊 Observability is key – #OpenTelemetry, #Grafana, #Elasticsearch power secure monitoring.
🚀 DevOps best practices like #GitOps (#ArgoCD, #Flux) & hardening (#AppArmor, #SELinux) are essential for secure cloud setups.

🔥 Final Reflections from OOP 2025

👉 OOP 2025 reinforced one thing: Innovation thrives when we break silos.

A huge thanks to the speakers, organizers, sponsors and attendees for making OOP 2025 an unforgettable experience! 🚀

Until next time! 👋

#OOP #SoftwareArchitecture #PlatformEngineering #DevOps #Cloud #AI

[Matthias Haeussler @maeddes]

@royvanrijn Why do you use "him" so often in your memes? I mean I totally get your point ... it's just ... I already have to see him way more often than I want already anyways

[Voxxed Days Amsterdam @VoxxedAmsterdam]

🚨 BREAKING: Voxxed Days Amsterdam Schedule online! 🎉

We're excited to share the first wave of confirmed speakers for each track (more to follow): https://t.co/yY9Qhb1SQa 

As tickets are selling fast and the early bird price almost ends on Valentine’s Day! 💘 
🎟️ Grab your ticket and fall in ❤️ with the conference: https://t.co/iS1gke7Rz2 

Get ready to dive into an incredible lineup:

Java (JVM) Track Talks
- Deep Dive: Bring the Action: Using GraalVM in Production (@alina_yurenko) 
- Java 24: A Story About Code, Conflicts, and Conquer (Lutske de Leeuw) 
- Debugging with IntelliJ IDEA (@antonarhipov) 
- Bootiful Spring Boot in 2025 (@starbuxman)
- Hunting with Stream Gatherers (@piotrprz)
- GraalVM in Action: Building a Polyglot Rule Engine for Dynamic Business Logic (@rick_ossies & Enric Sala Cardoso )

Data & AI
- Words as Weapons: The Dark Arts of Prompt Engineering. Let’s Hack Some Models… or Even You?! (@JeroenEgelmeers) 

Development Practices
- Programming’s Greatest Mistakes (@markrendle)
- Cracking the Code Review (@DevPaco) 
⁠- Streamtoxication: How a Fluent API turns into a Tangled Mess (@VictorRentea)

Architecture
- Hexagonal Architecture in Practice: Live Coding That Will Make Your Applications More Sustainable (@JulienTopcu)  

People & Culture
- Effective Software Design: The Role of Men in Debugging Patriarchy in IT (Kenny Baas-Schwegler) 

Build & Deploy
- Reaching Operational Excellence Using OpenTelemetry (@glyc1n  & Riccardo Lippolis) 
- Dockerfiles, Buildpacks, Jib, and More… What’s the Best Way to Run Your Java Code in Containers? (@maeddes) 

🔥 Stay tuned! This is just the beginning, we’ll be announcing more exciting talks and speakers soon.

#VoxxedAmsterdam #Voxxed #Java #Devoxx 

@Devoxx @voxxed @elastic @jdriven_nl @novatecgmbh @SHODOioFR @SHODOioFR  @OpenValue  @sogeti  @Oracle @jetbrains @Broadcom @picnic

[Matthias Haeussler @maeddes]

...,102,104,105,106,107,108,111,114,115,118,119,120,121,122,123,125,127,131,140,143,144,147,148,149,150,152,153,154,155,160,161,164,167,168,170,171,175,178,180,186,187,191,194,196,199

[Matthias Haeussler @maeddes]

mal ein Tweet im #VfB Kontext

Ich suche für mein Rewe Sammelalbum noch genau 1 Bild.
Das Erste - Nr. 001 - das Schönste aller Wappen

Und ich hab die ganz feste innere Überzeugung, daß wir gegen Paris gewinnen, wenn mir jemand hilft es bis dahin zu kriegen

Tauschmaterial 👇🏼

[Matthias Haeussler @maeddes]

4,6,7,9,12,13,14,15,17,21,23,25,27,28,30,32,35,37,38,39,41,42,43,45,47,48,50,52,55,56,57,59,60,61,62,64,66,68,70,72,73,75,77,78,80,81,82,83,84,87,88,89,91,93,96,98,...