Active Learning • Hands-on • Expert Led

Global Expert Training in Java, Spring Boot & Spring AI

High-impact, ready-to-deploy training modules for senior developers. Expert delivery across all time zones with a remote-first mindset. Master the Java ecosystem through elite-level Active Learning.

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20+ Years Experience

Senior Expertise

Global All Timezones

Remote-first delivery

Partner Trusted Subcontractor

For training companies

Custom Tailored Content

Adapted to your needs

Hands-on Expertise

Specialized training for
modern developers

I provide in-depth technical training that combines theoretical architecture with hands-on implementation. From core Java to advanced AI integration with Spring.

Java

A deep dive into the world's most stable ecosystem, focusing on modern releases and efficient code structure.

Modern Syntax (Java 17-25)
Concurrency & Virtual Threads
Functional Programming

Spring Boot

Learn to build scalable and secure enterprise applications with the framework that defines modern Java development.

Enterprise Architecture
Building & Consuming REST APIs
Spring Data & Database Integration

Spring AI

Future-proof your skills by integrating generative AI directly into your existing Java ecosystem.

LLM Integration (GPT, Claude)
Vector Databases & RAG
AI Agent Orchestration

Your Instructor

Andreas Olsson

Expertise through Active Learning

Java and the Spring Framework have been my core focus for over 20 years. Today, my mission is primarily to help organizations step into the future by integrating intelligent agents and AI-driven features into modern Java systems.

Actlea stands for Active Learning – the philosophy that programming is best learned by writing code, not by watching slides. My workshops focus on intensive, hands-on exercises designed to solve real-world problems.

I deliver proven training concepts globally across all timezones. While I specialize in remote delivery, I love to travel for onsite workshops. My modules are ready for immediate impact but can be tailored to your team's specific requirements.

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Java • Spring Boot • Spring AI

End clients I've trained

Participant Reviews

What past participants say

Read about the pedagogical approach, the hands-on labs, and the impact on daily work.

"Andreas is the name of competence, skill and reliability. He is no doubt a guru in the field of Java. His style of teaching is practical, well structured and effortless; I learned Java by doing it because of his well organized assignments.I felt connected, confident and comfortable with Andreas during the whole course because he listens, replies and helps each and every student in a very productive and professional way"

"Andreas is such a very positive and kind teacher, who makes you really feel that all questions are okay. As a beginner in a subject, this is probably the most important thing! It is also clear that he enjoys both Java and teaching, so the course was both fun and very rewarding."

"Andreas is a driven, problem-solving, happy and positive teacher whom I have appreciated during my training in Java."

"Andreas is a very committed and helpful teacher who does everything to ensure that his students not only learn, but also understand what he teaches. It is always a joy to be taught by Andreas as he himself has a noticeable great interest in programming. He always has a smile on his face and makes everyone in his classroom feel welcome and safe."

"It is clear that Andreas has a great passion and a genuine interest in the success of his students. He has really influenced and inspired me! ⭐️⭐️⭐️⭐️⭐️"

"Andreas is an excellent teacher who shows great competence in system development with Java and has developed an effective and engaging curriculum. He is an experienced system developer with broad knowledge of the Java ecosystem and he provides valuable feedback that helps students grow and develop as programmers. Andreas also encourages independent and creative thinking for students. I highly recommend Andreas to anyone looking for a high-quality education in Java development."

"One of the things I appreciated about Andreas as a teacher was the ability to meet everyone at their level in a permissive and understanding way. Whether it concerned questions that were far beyond what we were talking about right now or things that we had already talked about before, there were no questions that felt stupid, but we participants were seen as intelligent, thinking people who have the capacity to filter the information ourselves. That respect for us and our journey meant a lot to me and I think it was a big part of why the training worked so well."

"Andreas is a good teacher with sharp knowledge in java. And his positivity and joy he spread to the whole class during the days we had him as a teacher. The best teacher I've had so far, I have gained a lot of knowledge in java, thanks to Andreas Olsson."

About Partnerships

Your subcontractor for
premium training

I deliver ready-to-use workshops and advanced courses that you can offer under your own brand. A seamless integration of expertise into your existing portfolio.

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Ready-to-go courses & workshops

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White-label delivery

Explore collaboration

Large-scale delivery

Bootcamp Architecture

Scale your portfolio with full-scale transformation programs. I design and lead intensive bootcamps that secure your clients' long-term expertise.

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Trusted Partner & Subcontractor for

Proven Collaborations

Trusted by Program Managers

Hear from the training providers and managers who rely on my expertise for their global educational deliveries.

"Andreas conducted an intensive course in Java with us at The Upskill Company. He was easy to work with throughout the process and agile in his way of adjusting the training and the content according to the conditions required by this specific project. He is a very confident, talented and valued trainer who gave our students exactly the right conditions for learning."

"I have collaborated with Andreas in several educational programs since 2019 and have always appreciated our collaboration very much! On several occasions, Andreas has participated in customer dialogues as an expert trainer and given his input, as well as been involved in developing plans within corporate training. In my previous role as Program Manager, I really appreciated Andreas positive attitude, solution focus and his professionalism. As a trainer, Andreas is extremely appreciated by participants in Bright’s training courses and is described as listening, calm, educational and extremely concerned that all participants should learn and keep up! Andreas always goes the extra mile both for me as a client but also for his participants!"

"In my role as project manager, I have collaborated with Andreas in several projects and have always been very impressed! Just to mention the last project, the 12-week Academy program in Java, Andreas has been a big part of both the planning phase and the implementation phase. Even though he has completed this project several times, he always sees the opportunity for development and goes the extra mile in all situations. What I appreciate most about Andreas in the operational phase is his ability to communicate, always engaged and open for feedback. This is also something that our consultants agree with as he got the result 5.8 out of 6 in the weekly evaluation. Andreas technical competence is very high, mainly in Java and Spring, but also his pedagogical skills. He motivates and coaches the consultants to the highest results! I can really recommend Andreas and hope I have the opportunity to work with him again soon!"

"I’m happy to recommend Andreas, an excellent teacher and colleague. We’ve collaborated for the past five years on various training initiatives. Andreas is a skilled teacher known for his high-quality teaching style and consistently fostering a secure and positive learning environment. He has played a key role in tailoring programs to meet our client’s specific needs when developing new reskill and upskill programs and always ensuring top-notch quality in our recurring programs. I value our collaboration and look forward to future opportunities to work together!"

"I had the privilege of working with Andreas in a 12-week reskill program in Java, where Andreas was the lead trainer and I was the Program Manager. I am incredibly impressed by Andreas, who has been involved in building the program from the ground up and he has been very committed to both the program content and the individual coaching of the participants. He has a high level of technical competence, a good teaching ability and you can see that he is passionate about coaching others. Andreas stands out as he is always happy and positive and good at creating a welcoming and easy-going atmosphere in the classroom. He is easy to work with, always available and open to feedback. Andreas has received very high marks in terms of overall impression as a teacher of the 20 participants who have completed the program and on the final evaluation he received the marks 6 out of 6 possible! I highly recommend Andreas and look forward to working with him again!"

"Andreas delivered a 12-week Java program for us at Brights, where Andreas and I worked closely together in my role as Program Manager. Andreas is meticulous in his planning and committed as a teacher. In addition to this, Andreas is incredibly pedagogical and is happy to take his own initiatives to improve and develop educational content. In summary, this has been an appreciated collaboration and I strongly recommend Andreas for similar assignments."

Methodology & Philosophy

Passion for Active Learning

Actlea was founded with a vision to transform technical education by putting active participation and hands-on programming at the forefront.

The Methodology

The name Actlea is derived from the core philosophy: Active Learning. It's the conviction that true technical expertise cannot be read—it must be coded through active participation.

The Philosophy

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Hands-on Theory is immediately translated into code.
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Activity Participants solve real-world problems.
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Relevance Focus on tools used in modern production.

Take the next step toward
world-class expertise

Whether you want to upskill your existing team or train the next generation of developers, Actlea has proven concepts ready for delivery.

Workshops & Courses: Ready-made modules for immediate delivery to your team.
Bootcamp Modules: Complete packages for training providers needing a reliable partner.
Customization: Ability to tailor content to your specific tech stack.

I am available as a sub-contractor for training organizations or as a direct partner for companies. Reach out, and let's find the format that best suits your challenges.