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Learn to Build apps effectively with AI coding agents without losing your judgment as a developer
In this course with 100+ on-demand video lessons you'll deep-dive into LLMs, AI agents and ultimately plan, design, architect and build a real mobile app for Android & iOS.
Early-Bird Deal:
49€
29€
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Course includes:
- Over 100 on-demand video lessons on LLM internals, agent fundamentals, Claude Code, prompt engineering, context engineering and applying everything in practice
- Certificate awarded at the end for successful completion
- Limited bonus: Full recording for Philipp Lackner's live event "The 2027 AI Coding Stack for Professional Developers"
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3 Skills You'll have after this course
A very complete understanding of LLMs
Real mastery doesn't just requre learning what to do, but also truly understanding how things work behind the scenes.
This is why this course doesn't skip the part about LLM fundamentals & internals.
Working with Claude Code
You'll know exactly how you need to set up Claude Code to get the most out of it, save tokens and choose the right model for the right job.
Working with AI in real projects
You'll learn how you have to work with tools like Claude Code in your IDE to make it gather all the necessary context and have it work on the right chunks of work in the right order.
Who Is This Course For?
This course is for you, if…
- … you are a developer and want to combine your technical abilities & judgment with modern AI tools to accelerate high-quality output.
- … you don't really know where to start with agentic development or lack structure in how you work with AI tools.
- … you need a clear structure for learning without going through all the trial & error yourself.
You Should Not Get The Course If…
- … you’re already very experienced with agentic development and advanced AI coding workflows.
- … you’re looking for a vibe coding course that makes non-technical people build sloppy apps.
- … you expect AI to do everything for you without understanding the fundamentals.
These 100+ Videos are waiting for you
1. LLM Fundamentals
- Why these fundamentals matter for anyone
- What is a neural network?
- What is an LLM from a high level?
- Tokenization and subwords
- Tokenization algorithms
- Tokenization can lead to weird behavior
- The embedding matrix and vectors
- With vectors we can do math
- The math behind LLMs simplified
- Cosine similarity and vector search
- What is a Transformer
- The self attention mechanism
- Multi head attention
- Positional encoding
- Where facts live
- Pre training
- Supervised Fine Tuning (SFT)
- RLHF & DPO (Alignment)
- Catastrophic forgetting
- Decoding strategies (Temperature, Top K, Top P)
- The KV cache memory bottleneck
- Model quantization
- Mixture of experts (MoE)
- Why hallucination is a feature, not a bug
- Do LLMs hallucinate less when outputting code?
- Context rot & lost in the middle
- Non determinism
- Prompt injection attacks
2. Agent Fundamentals & Claude Code
- What is agentic coding?
- Terminology first
- What is an agent harness
- Tools
- Skills
- MCP
- Shells and CLI
- Slash commands
- AGENTS md
- Sub agents
- Hooks
- Plugins
- Permissions and Sandboxing
- Memory and Plan mode
- Scopes
- Installation and Setup
- Terminal vs Desktop
- Claude Code Roundtrip
- The .claude directory
- The Claude Plugin Marketplace
- Creating solid skills
- Configuring MCP connections
- Configuring permissions
- Claude Code with AGENTS.md
- Resuming a previous session
- Model selection
- Configuring the status line
- Seeing where usage goes
- Clearing and compacting a session
- Setting the level of effort
- Save tokens with an advisor
3. Prompting & Context Engineering
- Don't overthink prompting
- There is a science behind prompting
- Tool recommendation: Wispr Flow
- What is the goal of a good prompt
- It is not about always following everything
- Be specific
- Specify output formats explicitly
- Prefer Do X over Don't Do Y
- Break down complex tasks into steps
- Keep prompts lean
- Providing examples the right way (and how many)
- Use Delimiters
- Put critical information first and last
- Explain why
- Don't overload
- Scale with task complexity, not with task size
- Task specific prompting
- What counts as context?
- What context engineering is & why it matters more than prompting
- Template of a well formed initial message
- Project level context: Writing a good system prompt
- Session level context: What accumulates as you work
- Task level context: Specs, acceptance criteria, relevant files
- Heuristics for clearing context
- When to compact a session?
- Figma tip: Make the agent comment the frames
- Handoff documents
- Scratchpads and working memory files
- Spec Driven Development (SDD) - Overview & outlook
- Architectural Decision Records (ADRs)
4. Putting it to practice: Let's build an app!
- Reminder: Your results will be different than mine
- 9 skills you can use to follow along
- You don't have to build exactly what I am
- What will we build?
- Setting up the project
- Drafting some designs first
- Creating AGENTS.md
- Strategy: Shared infrastructure first
- Project structure & project wide utility setup
- Creating the design system
- Note storage setup
- File picker implementation
- Note screens and Markdown rendering
- Searching, import & export
- Final fixes
Philipp Lackner has over 14 years of experience in the software field. Over the past years, he built a following of over 250,000 developers on social media who trust his work. With over 25,000 sold copies of his courses and 1,000h+ spent for teaching Android concepts, he already helped hundreds of thousands people to learn practical skills they can immediately apply.
He has a degree in computer science, however it didn’t go as expected. The amount of theory that was taught in university made him think about a better approach to learn what is really needed in the real world. Over time, Philipp found mentors who taught him exactly that in a practical setting. That was the game changer for his career.
After having worked for dozens of companies around the globe as a consultant, Philipp now wants to teach other Kotlin developers what really counts for becoming an outstanding developer in today’s competitive industry.
800
h
+
Of created Android content
15.000
+
Enrolled students
14
+
Years of software dev
What people are saying
about Philipp’s courses
Real-world insights, structured learning, and expert mentorship that transform careers.
"This course brought me back on track really fast and Philipp really took care to convey general knowledge that can be applied on every Android project."
Matthias Kerat
"I have been using modularization for a long time, but I learned new cool stuff and tricks in your course that will change my way of thinking about how I should design my code."
Amer Hadi
"What’s unique about Philipp, that he cares about those who are looking for help, he answers to PM’s, I’ve never had experience like that."
Ozzy
"Your course let me also the opportunity to enhance my jetpack compose and unit test skills . So, I can consider me super satisfied. Please, don’t stop mentoring."
Vitanio Daniele
"Taking any of Philipp’s courses makes you go from 0 to almost 100 in understanding the concepts in no time. He explains the basics so well and teaches real world application use cases."
Messy Limes
"I’ve had struggles working with big projects, but after this course I feel so much more confident in my skills in building large robust apps."
Luka Luković
"I recently completed this course, and I couldn't be more thrilled with the experience! This course exceeded my expectations in every way. Philipp's real-world experience was evident. He covered everything from Ul design to integrating APls and managing databases,... Overall, this course was an incredible learning journey. I highly recommend it to anyone looking to start or advance their career in Android development!"
Erdem Kaya
"Philipp is an amazing developer who explains the most difficult topics in a way that's digestible and it stays with you. Everything is through practical examples. He's someone you'd want to go to, to understand something that you can't understand"
Omer Quadri
"This is one of the best courses for android development I have taken, not only we get to learn a lot but we also get an insight of where the industry is heading and how to approach problems and projects."
Jose Agustin Reinoso
The full offer at a glance
Make a one-time investment and gain skills that last forever
- 100 Exclusive Videos About Agentic Coding: Learn how to work with AI coding tools effectively and build your first real app with that.
- Certificate Awarded at the End: At the end of the course,you’ll be able to take a quiz and get a certificate after passingto show future employers that you’ve internalized this topic.
- Limited Bonus (only during launch week): Full recording from Philipp's live event "The 2027 AI Coding Stack for Professional Developers"
Early-Bird Deal For "Agentic Development for Beginners"
Get the new course for only 29€. At the end of the sale, the price will almost double.
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