Simon Martinelli
@martinelli.ch
Java Champion, Vaadin Champion, Oracle ACE Pro, International Speaker, Programming Architect, and Lecturer for Software Architecture, Java, Persistence, and DevOps.
https://martinelli.ch
https://martinelli.ch
Pinned
Simon Martinelli
@martinelli.ch
· Apr 17
[VDBUH2025] Simon Martinelli - Goodbye Microservices, Hello Self-Contained Systems
YouTube video by Devoxx
www.youtube.com
The recording of my talk "Goodbye Microservices, Hello Self-Contained Systems" at Voxxed Days Bucharest is online!
#SCS #Microservices #Architecture
www.youtube.com/watch?v=Jjre...
#SCS #Microservices #Architecture
www.youtube.com/watch?v=Jjre...
November 16, 2025 at 7:30 PM
Reposted by Simon Martinelli
I created a new Vaadin AI starter that gives you a great starting point for building AI-powered apps. It includes:
💬 Streaming chat interface with Open AI
🔧 MCP support
☕ Java tool calling, local and REST
→ github.com/marcushellb...
💬 Streaming chat interface with Open AI
🔧 MCP support
☕ Java tool calling, local and REST
→ github.com/marcushellb...
GitHub - marcushellberg/vaadin-ai-starter
Contribute to marcushellberg/vaadin-ai-starter development by creating an account on GitHub.
github.com
November 14, 2025 at 3:11 PM
I created a new Vaadin AI starter that gives you a great starting point for building AI-powered apps. It includes:
💬 Streaming chat interface with Open AI
🔧 MCP support
☕ Java tool calling, local and REST
→ github.com/marcushellb...
💬 Streaming chat interface with Open AI
🔧 MCP support
☕ Java tool calling, local and REST
→ github.com/marcushellb...
As requested, I will do a live demo on how I use the AI Unified Process aiup.dev
Join my live stream next week on Tuesday, November 18th, at 4 pm CET.
Prepare your questions!
www.youtube.com/watch?v=jwPB...
Join my live stream next week on Tuesday, November 18th, at 4 pm CET.
Prepare your questions!
www.youtube.com/watch?v=jwPB...
Spec-driven Development with the AI Unified Process
YouTube video by Simon Martinelli
www.youtube.com
November 14, 2025 at 2:41 PM
As requested, I will do a live demo on how I use the AI Unified Process aiup.dev
Join my live stream next week on Tuesday, November 18th, at 4 pm CET.
Prepare your questions!
www.youtube.com/watch?v=jwPB...
Join my live stream next week on Tuesday, November 18th, at 4 pm CET.
Prepare your questions!
www.youtube.com/watch?v=jwPB...
This morning, I had the pleasure of joining the Bootiful Podcast, hosted by @starbuxman.joshlong.com
We were discussing jOOQ, Vaadin, Spring Data, and the Unified Process for AI.
Thank you very much for having me, my friend 🙏
www.youtube.com/watch?v=EvzD...
We were discussing jOOQ, Vaadin, Spring Data, and the Unified Process for AI.
Thank you very much for having me, my friend 🙏
www.youtube.com/watch?v=EvzD...
Simon Martinelli on a Bootiful Podcast
YouTube video by Coffee + Software
www.youtube.com
November 14, 2025 at 9:33 AM
This morning, I had the pleasure of joining the Bootiful Podcast, hosted by @starbuxman.joshlong.com
We were discussing jOOQ, Vaadin, Spring Data, and the Unified Process for AI.
Thank you very much for having me, my friend 🙏
www.youtube.com/watch?v=EvzD...
We were discussing jOOQ, Vaadin, Spring Data, and the Unified Process for AI.
Thank you very much for having me, my friend 🙏
www.youtube.com/watch?v=EvzD...
Reposted by Simon Martinelli
Spring Framework 7.0 is now GA!
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Spring Framework 7.0 General Availability
Level up your Java code and explore what Spring can do for you.
spring.io
November 13, 2025 at 11:05 PM
Spring Framework 7.0 is now GA!
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Hey look what just arrived 🚀
Congratulations @spring.io
Congratulations @spring.io
November 14, 2025 at 6:42 AM
Hey look what just arrived 🚀
Congratulations @spring.io
Congratulations @spring.io
Ich bin nächstes Jahr auch wieder dabei 🚀
🚀 Das #jaxcon Programm 2026 ist online!
Tauche ein in Java, Architektur & Software-Innovation.
📅 4.–8. Mai 2026 | Mainz oder Online
📖Jetzt Programm durchstöbern: https://tinyurl.com/mphrkeus
#Java #SoftwareArchitecture #DevOps #Cloud #AI
Tauche ein in Java, Architektur & Software-Innovation.
📅 4.–8. Mai 2026 | Mainz oder Online
📖Jetzt Programm durchstöbern: https://tinyurl.com/mphrkeus
#Java #SoftwareArchitecture #DevOps #Cloud #AI
November 13, 2025 at 10:10 AM
Ich bin nächstes Jahr auch wieder dabei 🚀
Reposted by Simon Martinelli
🚀 Spring AI 1.1.0 GA Released
🔧 Better MCP Integration ... 🔐MCP OAuth2 server protection 🔄 Recursive Advisors ...📦 Developer Experience: ... Over 850+ commits
Kudos to the entire Spring AI community! 🙌
Find more: spring.io/blog/2025/11...
@spring-ai.bsky.social
🔧 Better MCP Integration ... 🔐MCP OAuth2 server protection 🔄 Recursive Advisors ...📦 Developer Experience: ... Over 850+ commits
Kudos to the entire Spring AI community! 🙌
Find more: spring.io/blog/2025/11...
@spring-ai.bsky.social
November 13, 2025 at 8:01 AM
🚀 Spring AI 1.1.0 GA Released
🔧 Better MCP Integration ... 🔐MCP OAuth2 server protection 🔄 Recursive Advisors ...📦 Developer Experience: ... Over 850+ commits
Kudos to the entire Spring AI community! 🙌
Find more: spring.io/blog/2025/11...
@spring-ai.bsky.social
🔧 Better MCP Integration ... 🔐MCP OAuth2 server protection 🔄 Recursive Advisors ...📦 Developer Experience: ... Over 850+ commits
Kudos to the entire Spring AI community! 🙌
Find more: spring.io/blog/2025/11...
@spring-ai.bsky.social
Reposted by Simon Martinelli
Don't miss my new blog post in the Road to GA series to learn how the Spring team empowers Spring developers to make their Spring Boot 4 application null-safe, to reduce or remove the risk of NullPointerException and to solve "the billion dollar mistake"! spring.io/blog/2025/11...
#spring #java
#spring #java
Null-Safe applications with Spring Boot 4
Level up your Java code and explore what Spring can do for you.
spring.io
November 12, 2025 at 5:09 PM
Don't miss my new blog post in the Road to GA series to learn how the Spring team empowers Spring developers to make their Spring Boot 4 application null-safe, to reduce or remove the risk of NullPointerException and to solve "the billion dollar mistake"! spring.io/blog/2025/11...
#spring #java
#spring #java
20 years ago, we moved from client/server applications to web applications.
10 years ago, we moved from web applications to single-page applications (SPAs).
What many still don’t realize: SPAs are client/server applications again.
Technology changes - the architecture patterns repeat.
10 years ago, we moved from web applications to single-page applications (SPAs).
What many still don’t realize: SPAs are client/server applications again.
Technology changes - the architecture patterns repeat.
November 12, 2025 at 8:56 AM
20 years ago, we moved from client/server applications to web applications.
10 years ago, we moved from web applications to single-page applications (SPAs).
What many still don’t realize: SPAs are client/server applications again.
Technology changes - the architecture patterns repeat.
10 years ago, we moved from web applications to single-page applications (SPAs).
What many still don’t realize: SPAs are client/server applications again.
Technology changes - the architecture patterns repeat.
Reposted by Simon Martinelli
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
#opensource #opentowork | Andres Almiray
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland (...
www.linkedin.com
November 11, 2025 at 10:46 AM
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
Be careful when using Spring Data: if you don't need the total number of elements, you shouldn't use `Page` as the return type. Spring Data performs two queries: one to count and one to fetch when Page is returned. Instead, you can use Slice.
Example project: github.com/simasch/spri...
Example project: github.com/simasch/spri...
GitHub - simasch/spring-data-page
Contribute to simasch/spring-data-page development by creating an account on GitHub.
github.com
November 7, 2025 at 6:57 PM
Be careful when using Spring Data: if you don't need the total number of elements, you shouldn't use `Page` as the return type. Spring Data performs two queries: one to count and one to fetch when Page is returned. Instead, you can use Slice.
Example project: github.com/simasch/spri...
Example project: github.com/simasch/spri...
Reposted by Simon Martinelli
@martinelli.ch on why Vaadin works well with AI code generation: server-side Java keeps logic secure, strong typing catches AI mistakes at compile time, and single-language stack = no context switching. Worth a read 👇
martinelli.ch/why-vaadin-i...
martinelli.ch/why-vaadin-i...
Why Vaadin Is Perfect for AI-Driven Development - Martinelli
AI-driven development is changing how we build software. Instead of writing every line of code by hand, developers increasingly use AI tools and agents to generate, test, and even maintain application...
martinelli.ch
November 6, 2025 at 2:12 PM
@martinelli.ch on why Vaadin works well with AI code generation: server-side Java keeps logic secure, strong typing catches AI mistakes at compile time, and single-language stack = no context switching. Worth a read 👇
martinelli.ch/why-vaadin-i...
martinelli.ch/why-vaadin-i...
I'd like to introduce you to: the Simon Martinelli stack: martinelli.ch/the-simon-ma...
The Simon Martinelli Stack: A Pragmatic Approach to Full-Stack Java Development - Martinelli
In the fast-paced world of software development, developers are often overwhelmed by endless framework choices and architectural trends. Over the years, I have refined a stack that balances simplicity...
martinelli.ch
November 5, 2025 at 5:31 PM
I'd like to introduce you to: the Simon Martinelli stack: martinelli.ch/the-simon-ma...
Reposted by Simon Martinelli
And now @martinelli.ch talks about the return of the full stack developer or jack of all trades and master of none. Still at the lightweight JUG in Munich 🥰
November 4, 2025 at 8:07 PM
And now @martinelli.ch talks about the return of the full stack developer or jack of all trades and master of none. Still at the lightweight JUG in Munich 🥰
Reposted by Simon Martinelli
Der Nachmittag heute auf der W-JAX:
🏗️ Carola Lilienthal über Missverständnisse in der Softwarearchitektur
☕ @martinelli.ch über die Rückkehr des Full-Stack-Developers
☁️ Torsten Bøgh Köster über Cloud, Kosten & Kontrolle
#jaxcon #SoftwareArchitecture #Java #Cloud #FullStack
🏗️ Carola Lilienthal über Missverständnisse in der Softwarearchitektur
☕ @martinelli.ch über die Rückkehr des Full-Stack-Developers
☁️ Torsten Bøgh Köster über Cloud, Kosten & Kontrolle
#jaxcon #SoftwareArchitecture #Java #Cloud #FullStack
November 4, 2025 at 3:38 PM
Der Nachmittag heute auf der W-JAX:
🏗️ Carola Lilienthal über Missverständnisse in der Softwarearchitektur
☕ @martinelli.ch über die Rückkehr des Full-Stack-Developers
☁️ Torsten Bøgh Köster über Cloud, Kosten & Kontrolle
#jaxcon #SoftwareArchitecture #Java #Cloud #FullStack
🏗️ Carola Lilienthal über Missverständnisse in der Softwarearchitektur
☕ @martinelli.ch über die Rückkehr des Full-Stack-Developers
☁️ Torsten Bøgh Köster über Cloud, Kosten & Kontrolle
#jaxcon #SoftwareArchitecture #Java #Cloud #FullStack
Reposted by Simon Martinelli
Ever wondered why in a Spring MVC Controller the query parameters are mapped using a @RequestParam annotation and not a @QueryParam annotation? If you look at the JavaDoc you'll find the answer:
In Spring MVC, "request parameters" map to query parameters, form data, and parts in multipart requests.
In Spring MVC, "request parameters" map to query parameters, form data, and parts in multipart requests.
November 2, 2025 at 11:24 AM
Ever wondered why in a Spring MVC Controller the query parameters are mapped using a @RequestParam annotation and not a @QueryParam annotation? If you look at the JavaDoc you'll find the answer:
In Spring MVC, "request parameters" map to query parameters, form data, and parts in multipart requests.
In Spring MVC, "request parameters" map to query parameters, form data, and parts in multipart requests.
Reposted by Simon Martinelli
💡@martinelli.ch erklärt warum #FullStack Entwicklung ein Comeback erlebt - Weniger FE/BE-Reibung, schnellere API/Data-Entscheide, besseres E2E-Debugging – Fokus aufs breites Skill-Set.
📰Neugierig? Lies den ganzen Artikel: https://f.mtr.cool/ernoljniix
#Java #SoftwareArchitecture #SpringBoot
📰Neugierig? Lies den ganzen Artikel: https://f.mtr.cool/ernoljniix
#Java #SoftwareArchitecture #SpringBoot
Die Rückkehr des Full- Stack-Entwicklers
Die Rückkehr der Full-Stack-Entwickler: Moderne Frameworks verbinden Front- und Backend, meistern komplexe Webanwendungen und fördern Entwicklung.
f.mtr.cool
October 31, 2025 at 10:03 AM
💡@martinelli.ch erklärt warum #FullStack Entwicklung ein Comeback erlebt - Weniger FE/BE-Reibung, schnellere API/Data-Entscheide, besseres E2E-Debugging – Fokus aufs breites Skill-Set.
📰Neugierig? Lies den ganzen Artikel: https://f.mtr.cool/ernoljniix
#Java #SoftwareArchitecture #SpringBoot
📰Neugierig? Lies den ganzen Artikel: https://f.mtr.cool/ernoljniix
#Java #SoftwareArchitecture #SpringBoot
Reposted by Simon Martinelli
We've published a new installment of our "Road to GA" blog series. This time it's about the huge modularization effort the Spring Boot team has done and which is coming in Spring Boot 4: spring.io/blog/2025/10...
#java #spring #springboot
#java #spring #springboot
Modularizing Spring Boot
Level up your Java code and explore what Spring can do for you.
spring.io
October 28, 2025 at 3:47 PM
We've published a new installment of our "Road to GA" blog series. This time it's about the huge modularization effort the Spring Boot team has done and which is coming in Spring Boot 4: spring.io/blog/2025/10...
#java #spring #springboot
#java #spring #springboot
Reposted by Simon Martinelli
How Chat Memory Manipulation Can Ruin Your AI System
foojay.io/today/how-ch...
foojay.io/today/how-ch...
How Chat Memory Manipulation Can Ruin Your AI System
Did you know that by tampering with chat history, you're able to make LLMs respond and execute functions that are out of policy?
foojay.io
October 28, 2025 at 7:44 AM
How Chat Memory Manipulation Can Ruin Your AI System
foojay.io/today/how-ch...
foojay.io/today/how-ch...
The reason for creating tests is not to achieve 80% code coverage, but to gain the assurance that the application will still work after a change.
October 25, 2025 at 2:54 PM
The reason for creating tests is not to achieve 80% code coverage, but to gain the assurance that the application will still work after a change.
Reposted by Simon Martinelli
📢 Announcement 📢
#Java peers, the 2026 #JavaOne call for papers is now LIVE. Please make your submissions by November 11, 2025 5:00 p.m. PT by visiting the conference website:
➡️ social.ora.cl/6013A7UXF
#Java peers, the 2026 #JavaOne call for papers is now LIVE. Please make your submissions by November 11, 2025 5:00 p.m. PT by visiting the conference website:
➡️ social.ora.cl/6013A7UXF
October 23, 2025 at 5:27 PM
📢 Announcement 📢
#Java peers, the 2026 #JavaOne call for papers is now LIVE. Please make your submissions by November 11, 2025 5:00 p.m. PT by visiting the conference website:
➡️ social.ora.cl/6013A7UXF
#Java peers, the 2026 #JavaOne call for papers is now LIVE. Please make your submissions by November 11, 2025 5:00 p.m. PT by visiting the conference website:
➡️ social.ora.cl/6013A7UXF
Wheels down FRA for @vaadin.com Create conference 🚂
October 20, 2025 at 2:42 PM
Wheels down FRA for @vaadin.com Create conference 🚂
#VerboseMode at @baselone.bsky.social @jbaru.ch hosting Simon Martinelli on full-stack development.
www.youtube.com/watch?v=qFZa...
www.youtube.com/watch?v=qFZa...
#VerboseMode at #BaselOne 2025 with Simon Martinelli on full stack development
YouTube video by TuxCare
www.youtube.com
October 16, 2025 at 2:36 PM
#VerboseMode at @baselone.bsky.social @jbaru.ch hosting Simon Martinelli on full-stack development.
www.youtube.com/watch?v=qFZa...
www.youtube.com/watch?v=qFZa...