Lukas Lechner

👨‍💻 Freelancer & Course Creator
👋 Sharing everything I learn along the way
⚡️Follow if you are interested in Freelancing | Course Creation | Android | Kotlin

[Lukas Lechner @LukasLechnerDev]

🚀 Get my Course "Kotlin Coroutines and Flow for Android Development" for a very nice discount here 👇

https://t.co/sK71jADGEL

[Lukas Lechner @LukasLechnerDev]

@codinginflow I saw someone writing some code in their IDE today.

Manually.

Line by Line.

He just sat there.
Typing on his keyboard.
Like a Psychopath.

[Lukas Lechner @LukasLechnerDev]

Not bad, GPT 5.4 😂

[Lukas Lechner @LukasLechnerDev]

@JorgeCastilloPr Sometimes, people don't have enough knowledge about a field to know what to ask an LLM.

So courses are still valuable for teaching the fundamentals so that students know what to ask.

[Lukas Lechner @LukasLechnerDev]

This setting is crucial for agentic coding in IntelliJ / Android Studio. Otherwise, your agents could read outdated files that are only in memory and not yet written to disc!

[Lukas Lechner @LukasLechnerDev]

I am going to be at KotlinConf 2026! Join me! https://t.co/OtYvUX3y0L

Who is also attending?

[Lukas Lechner @LukasLechnerDev]

Here you can get the Coroutines & Flow course, if you don't have it yet: https://t.co/sK71jADGEL

[Lukas Lechner @LukasLechnerDev]

I’m now fully back in course creation mode 💪

My first step was updating the "Testing Coroutines" module in my
“Kotlin Coroutines and Flow for Android Development” course.

Next up on my roadmap: a brand-new course on "Modern Spring Boot with Kotlin".

Stay Tuned!

[Lukas Lechner @LukasLechnerDev]

@devforwhile One requirement for this position is that you need to travel once per week to the office in Vienna, so you should live nearby.

If that works for you, please apply via the link in the initial tweet

[Lukas Lechner @LukasLechnerDev]

My team is looking for an Android Developer to help us with our awesome grocery delivery app!

https://t.co/Du9Nck1o4W

#androiddev #Kotlin #JetpackCompose

[Lukas Lechner @LukasLechnerDev]

@solanki_br21047 Oh, I opened it.

[Lukas Lechner @LukasLechnerDev]

@HardikThakker12 Fully-remote is unfortunately not possible, you should be in the office in Vienna at least twice a month ...

[Lukas Lechner @LukasLechnerDev]

@KotlinMENA This looks really helpful. Thanks a lot!

[Lukas Lechner @LukasLechnerDev]

We want the UI of our Android and iOS apps to be more dynamic & controllable by our backend, but we struggle to find the proper degree of flexibility.

Anybody with experience, tips or links to good resources here?

Every kind of help is appreciated :)

#AndroidDev #iosdev

[Lukas Lechner @LukasLechnerDev]

@FatalError1609 Yep, agree! I wonder if there are some kind of best practices around server-driven UI for mobile apps, or if every company their own "system"?

[Lukas Lechner @LukasLechnerDev]

@Gabriel_993 We are already sending the platform and version in the header, so this would be possible.

However, I think the version-feature mapping is hard to maintain... I am also not sure how to implement this with feature flags that can be toggled in the developer settings of the app...

[Lukas Lechner @LukasLechnerDev]

My Backend for Frontend needs to know which features a mobile client supports.

I am thinking about using http headers in request that indicate which features are supported.

Is this a good idea or are there other best practices?

#AndroidDev

[Lukas Lechner @LukasLechnerDev]

Not so sure about that 😆

But thanks for the feedback 🙂

[Lukas Lechner @LukasLechnerDev]

Always great to see that people find my course useful 🙂

[Igor Wojda 🤖 @igorwojda]

I am actively seeking a remote contract role. Got a position or need Android&Kotlin expertise? Feel free to DM me or email me at [email protected]. #OpenToWork #Kotlin #RemoteWork

[Lukas Lechner @LukasLechnerDev]

Check out my podcast (in German) with Ralf from @ElevatexDe!

We talk about freelancing, creating online courses, my transition from Android to Backend, and much more.

https://t.co/Mb7x7tFbDy