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AI Expert
The truth is that I had some experience with prompts and Claude Code, but I needed to enrich it with the basic fundamentals, MCPs, skills, and the different methodologies that are emerging to accelerate and improve the results obtained by the agents. Without a doubt, very useful to get up to date, improve skills, and stay informed without having to search for information in countless sources.
Claudia Luque Fernández
M-KOPA
AI Expert
Thanks to Antonio and Nino, I have gone from a superficial use of AI to being able to develop code in languages that are new to me.
Miguel Zaragoza
AI Expert
Although I already had some experience using AI tools, I wasn't entirely sure how to use them correctly to avoid falling into Vibe Coding directly and to achieve proper orchestration of the tools.
Iván Yael García Pérez
AI Expert
The order of the lessons seems very appropriate to me, allowing you to go from less to more, the quality of the classes has been very good, with unbeatable treatment, and moreover, they have managed to cover a lot of information in a very short time.
I would also like to point out how quickly they have adapted the content as things changed, which in this sector is every 10 minutes.
Juan Gabriel Pérez Leo
CapGemini
AI Expert
Now I understand how to integrate AI so it does the heavy lifting, while I take on a more strategic role, guiding it like a conductor.
If you want to transform the way you code and multiply your productivity, this training is the way.
Daniel Benítez de Haro
AI Expert
You start out just "tinkering" with AI tools and end up mastering a set of resources that are useful for your daily work and exponentially increase your productivity.
At the end of the course, you feel like you've moved to the next level ;)
Santiago Pérez Barber
Bytacora Soluciones Informáticas SL
Compose Expert
From my point of view, the strongest aspects are that the content is very well explained, structured, updated quite regularly, and there is a balance between theory and practice.
It is also very interesting that you have access to the course content once you have finished them.
Albert Martorell Garcia
Seidor Opentrends
Accessibility Expert
Ramsés Alarcón Córdova
Happydonia
Accessibility Expert
Juan José Bonillo Espinosa
Happydonia
Accessibility Expert
Julián Marqués García
Dinamic Área Software S.L
Compose expert
Francisco José Bermúdez Hermoso
Vass
Compose Expert
Joaquim Puyo Garrido
Rakuten TV
Testing Expert
The short video format seemed very appropriate to me, and the test configuration section is gold!
Joaquim Puyo Garrido
Rakuten TV
Kotlin Expert, Jetpack Compose
Liset Beatríz Armas Aguila
YPSOMED
Testing Expert
In a short time, you can get up to speed with the best practices in Android testing, guided step by step by Antonio.
I recommend it, even if you have already worked with unit tests. The UI testing module is very interesting.
Julián Marqués García
Dinamic Área Software S.L
Architect Coders/Android Engineer.
Pedro Aguilar Fernández
No tengo más que palabras
Javier Carrasco
Profesor de Informática
Kotlin Expert
It’s true that the pace of technology updates hasn’t been fully reflected in this current version of the course, so sometimes applying certain dependencies (and the appearance of the Kotlin 2.0 compiler) creates learning bottlenecks that, since it’s a non-tutored course, cause slowdowns when trying to put everything taught into practice.
Alex Tolón Gimeno
Compose Expert
Guillermo González
Software Engineer
KotlinExpert
Francesc Perez
Senior Android Developer
Kotlin Expert
I really liked the first part, which dealt with the technical topics of the language itself, although I have to say I missed more examples and more details on usage.
Regarding the second part, the multiplatform one, I found it very difficult to follow Antonio at every step, since Android Studio + IntelliJ IDEA have changed versions and many options shown no longer exist or the creation flow has changed. In fact, I think it’s a good time to update the content, maybe using Fleet directly. That way, the part about refactoring the project and moving things around might be much less confusing.
Thank you!
Oleksandr Tymoshenko
Mobile Developer
Kotlin expert
I’d like to highlight that there are many trainings that don’t cover certain aspects that are explained here, and the Multiplatform part is still very little covered by trainings.
Congratulations on the awesome course!
Jose V. Mirabel
Testing Expert
Victor Manuel Crespo Martín
Testing Expert
Juan Jose Bonillo Espinosa
Happydonia
Architect Coders y Android Boost
Josué Galindo
Desarrollador Android
Kotlin Expert
But overall, I think the training is good.
Victor Manuel Crespo Martín
Compose Expert
Also, you won’t just stay at the basics, you’ll go deeper into its components and functions.
Definitely a great investment.
Juan José Bonillo Espinosa
Android Developer
Kotlin Expert
I definitely recommend this training to anyone interested in the world of Kotlin.
Roberto Muñoz Rodríguez
Desarrollador Android
ARCHITECT CODERS
MANUEL MARÍA ALCONCHEL FERNÁNDEZ
ANDROID ENGINEER
Testing Expert
Santiago Mattiauda
MercadoLibre
Kotlin Expert
Maikel Garrido
Android Developer
KE Essential. I've taken other courses
Pedro Aguilar Fernández
Kotlin Expert
Begoña Fernández
Compose Expert
Begoña Fernández Velasco
Android Developer @ Mercedes-Benz Group Services Madrid
Kotlin Expert
What I liked most: Being able to create a backend with Kotlin... this part felt a bit short to me. I would have liked to see how to connect to an external database and a bit about tools that can be used for better code or security.
Thank you very much Antonio for the effort you are making for the community.
Jorge Tsitsaris Ripolles
Kotlin Expert
Additionally, I would like to highlight that the inclusion of content on Compose and Kotlin Multiplatform in the training has been a great added value. Compose is a very relevant technology nowadays, and teaching Kotlin Multiplatform opens up a world of possibilities for developing applications on different platforms efficiently.
César Jeanpierre Saldivar León
PeruApps / Android Developer
Kotlin Expert
Thank you very much for this training. I enjoyed every step. I would have liked it to be completed in less time, since it was a gamble to join this training when it wasn't finished. This delay meant I didn't join other trainings until this one was done. I was afraid it wouldn't be completed. Luckily, I was wrong.
On the other hand, I think all the sections related to the language were very valuable and, humbly, I think it could be a training on its own.
Now that the training is finished, I will very likely join the Compose training.
Best regards and until next time
Pablo
Pablo Perotti
Kotlin Expert
Santi Pérez Barber
Bytacora Soluciones Informáticas SL
Compose Expert
Santi Pérez Barber
Bytacora Soluciones Informáticas
Architect Coders
Boris Soto Trujillo
Upwork - Android Dev
Compose Expert
David Figueroa
Boa Apps
kotlinExpert
Many thanks to Antonio and his team for all the work and effort put into this course.
Greetings from Argentina.
Nazareno Jose Cesett
Freelance
KDA
David Figueroa
Boa Apps
The course is very complete [KDA]
JESÚS IGLESIAS GARCÍA
Software Developer
I had high expectations and it delivered
It helped me fill in gaps I had, learn the foundations for building a solid architecture, and above all, get rid of my fear and demystify automated testing.
Everything taught in the course I was able to quickly apply at work. Totally recommended.
Antonio Fernández Chamorro
Android dev at Freepik Company
The best compose course I've had
Thank you Antonio
Alvaro Yapu
Jalasoft / Android developer
Android Developer
Juan Francisco Mateos Redondo
Teaching par excellence
Elias Tabban
Android Dev
Fascinating, an essential step for an Android developer
almost constantly highlights the advantages of Kotlin over Java, which you can't appreciate if you don't know at least a little Java, which is even assumed in some modules of the book. But the reality is that knowing almost nothing about Java when I started the course, now I can handle both languages. One more step towards my goal, which is to sell freelance Android services and make a living from it.
Pere Pujol Artés
Freelance as a cybersecurity consultant
12 years developing applications in Android and iOS
Patricio Rodriguez
Desarrollador de aplicaciones móviles (Redegal)
What no one had ever told me about Kotlin until now
Antonio is an exceptional teacher, no one had ever explained the different concepts and characteristics of Kotlin elements to me in such a well-founded way.
I recommend this course to anyone who wants to refine their knowledge and improve their best practices in using Kotlin for Android app development.
Gaston Emiliano Michelan
Desarrollador Android
I finished the architect course
Roberto Hernández Tamayo
Android developer
Fantastic
Eduardo Calzado
Agentero / Lead Mobile Engineer
Combination of basic and intermediate level learned with useful content
It has been a great help that encourages me to continue learning Kotlin with this teacher.
Eduardo Fulgencio Comendeiro
Veridas
The examples are worth gold!
Teresa
Mobile Engineer
Essential to start developing in Android
Adrián Pascual
Kotlin, and the next level
Simon Ignacio Perez Diaz
Android Developer / SMU S.A.
Android Engineer
I started this course just for improvement, with no intention of changing companies, but thanks to the course I managed to get a great job.
Antonio has a way of explaining things that makes them easy to understand.
Cesar Licea
Wizeline / Android Engineer
Very happy to have finished
Carlos Alberto Moreno Manzano
A Level Up
100% recommended. Antonio is an excellent teacher, he makes himself understood very quickly and the practical examples help a lot.
Miguel Godoy Aldana
Android Developer
Compose for Dummies
Laura Velásquez Cano
Merqueo Android Developer
Antonio is awesome
Code quality is fundamental when presenting portfolios and looking for new companies.
Gonzalo Patricio Di Ascenzi Severini
Globant
Technical Engineer in Management Informatics, managing and developing projects in C#.Net, SharePoint and Android with JetPack Compose
I didn't feel comfortable with the classic technologies and decided to start a new project with JetPack Compose. As I progressed through the course, I was able to integrate it into my project.
This is not the first training I've done with Antonio Leiva and I don't think it will be the last because he is a great professional who knows the technology very well.
It is a very complete course, with lifetime access to the content and an affordable price.
David Oliver Ramos Del Oso
Development Engineer at Inetum
Senior Android Engineer
Well, it's the best investment in my knowledge that I've made.
It was a before and after for my career... I started to see things differently and most importantly: the time it would have taken me to find everything Antonio offers in the course would have cost me much more than what I invested in it.
As a result of the course, I met great colleagues with whom we share our experiences every week.
JORGE TSITSARIS
myQodi.com
Great Kotlin course for those coming from Java
Roberto Hernández
Android developer
Simple and effective
I had already had the opportunity to work with Kotlin, but thanks to this training I managed to refresh my knowledge and give real application to many key concepts of this programming language.
Having lifetime access to this training and being able to benefit from updates seems excellent to me, so I ensure I have a very good source of information among my allies to continue improving my application development skills.
Congratulations to the DevExperto team, thank you very much for everything!
Alejandra Acevedo Urrego
Applications Manager / Worldline
Great course to get to know Kotlin
A highly recommended course that you will surely revisit to review some concepts.
Gabriel Bernardo
Kotlin, a powerful tool
It has been an enriching experience, masterfully led by Antonio Leiva, allowing him to convey the key knowledge of Kotlin in a great way, very clearly and thoroughly. I congratulate Antonio for his excellent course and myself for having completed it successfully. It is also a 100% recommended and achievable course.
Join the Kotlin developer community and step into the future of mobile programming that is setting the trend.
Thank you, Antonio!
José Antonio Azpurua Ottengo
Searchbug Web Developer - Systems Engineer
Keys to moving from JAVA to Kotlin
Eduardo Calzado
Agentero - Lead Mobile Engineer
Mobile Developer
Arturo Andres Wilson
Software Engineering, especially in .Net and Android
David Oliver Ramos Del Oso
Development Engineer
A great course to get started in the world of Kotlin
A totally recommended course.
Javier
A pocket guide to learning Kotlin
Nicolás Hernán Rodríguez Formantel
Wally POS
Very complete!
Marcelo Czerewacz
Android Kotlin Developer, Aratech
My experience has been very good
Raúl Cristóbal Liz
IT Technician and Programmer, Mensajeros Costa Blanca
I've finally understood concepts I thought I already mastered
I've finally understood concepts I thought I already mastered, but was actually using incorrectly. Now I'm training my company's team thanks to everything I've learned.
Víctor Manuel Cañada
Senior Android Developer, Everis
Architect Coders is an investment whose return is guaranteed
I have acquired knowledge and skills that would have taken me much longer to get on my own. Also, the support from the community, tutors, and team members has been excellent.
It is an investment whose return is guaranteed, without a doubt.
Nono Francisco Carballo
Associate Partner, Doce Leguas S.L.
I gained confidence with the code I write.
Everything I've learned I'm applying to both applications, iOS and Android. Everything Antonio explains is applicable to different technologies.
Álvaro Blázquez
Head of Mobile Application Development, Nutritienda
I highlight Antonio's clarity in explaining
David Asencio
Android Developer, Jeff
Honestly, for me it has been a good investment.
Thanks to the structure of the Architect Coders course, Antonio's explanations and the exercises, I was able to minimize the time needed to learn what I was missing and compare it with what I already knew, which has been super helpful for me.
Claudia Luque
Senior Android Engineer, London (United Kingdom)
More clarity on Kotlin topics that no one explains to you.
Everything is so dynamic and well explained that your doubts disappear with every line of code that's written.
Jhon Tabares Orozco
Android Engineer, Siont
No matter your current level of Kotlin, this course is essential.
The course is explained in great detail, with many examples to follow and activities during the course to learn through practice.
No matter your current level of Kotlin, this course is essential if you want to grow in Android development with Kotlin.
David Cruz Anaya
Lead Android Engineer
It has been a truly well-structured course
It has been a truly well-structured course with a large number of examples and tips for each of the features included in the Kotlin language.
Without a doubt, I recommend it to any Android developer who wants to take their first (or not so first) steps in this new language that is undoubtedly making a strong impact.
David Hontiveros Gordo
Mobile Software Engineer, Indra
This training has exceeded my expectations.
This training has exceeded my expectations, the investment was worth it. Antonio explains complex topics with an ease that many courses don't achieve so easily.
And another thing I like about him as a teacher is that, when developing a topic in code, he explains the reasoning behind what you're writing at a depth that's also uncommon to find in many online courses, whether free or paid.
Really, 100% recommended course.
Samuel Águila Díaz
Android Developer
It helped me improve the project I'm working on.
I've been working with Android and Java for years, but just a year before I decided to start learning it on my own.
This course helped me improve my skills, understand language concepts, and refactor a lot of the code in the project I'm currently working on.
Carlos Alberto Graniel Córdoba
Desarrollador Android, Eliiot
Antonio helps you understand all the concepts in a very simple way.
Also, Antonio is an excellent teacher and presents all the material in a didactic way, helping you understand new concepts in a very simple manner.
Jorge López
Android Developer
The precise knowledge to make your way in the Android and Kotlin world.
It contains the precise knowledge to make your way in the Android and Kotlin world.
It has been an excellent investment. I encourage you to enroll, you won't regret it.
Fernando Domínguez
CEO, Optimizando Consultores SpA
The way it's put into practice is incredible.
I've been using Java for a long time, and with the syllabus and pace of this course, it's really very good. Everything is made clear and you can start developing in Kotlin right away.
Gerson Álvarez
Android Developer, Traxion
I've learned a lot, even though I already knew Kotlin.
Really good course, I definitely recommend it. I've learned a lot, even though I already knew Kotlin.
Jorge Soto
Android Developer
Here I truly discovered the magic of Kotlin.
I think, as Antonio says, here I truly discovered the magic of Kotlin: many tools to put into practice to reduce code, make it more readable and simplified.
Óscar Lizarazo
Android Developer