Sergei Rybalkin (@lightdelay) header
Sergei Rybalkin (@lightdelay) profile picture

Sergei Rybalkin

@lightdelay

Tech lead for Android Infra @Meta | 🛠 Compilers | all opinions are my own

 Follow me
threads.net/@sergey.rybalkin
Joined August 2010
  • Tweets1.4K
  • Following279
  • Followers1.1K
239Media
Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)Photo by Sergei Rybalkin (@lightdelay)
We finally open sourced DataClassGenerate - a #kotlin compiler plugin to address Data Class codegen overhead in Android applications! github.com/facebookincubator…
GitHub - facebookincubator/dataclassgenerate: DataClassGenerate (or simply DCG) is a Kotlin...

GitHub - facebookincubator/dataclassgenerate: DataClassGenerate (or simply DCG) is a Kotlin...

DataClassGenerate (or simply DCG) is a Kotlin compiler plugin that addresses an Android APK size overhead from Kotlin data classes. - facebookincubator/dataclassgenerate

github.com
4
5
1
56
9,996
Sergei Rybalkin retweeted
Kotlin by JetBrains (@kotlin) profile picture
Kotlin by JetBrains
@kotlin13 Aug 2025
🚀 Big news from the Kotlin Foundation! We’re welcoming @lightdelay, Senior Staff Software Engineer at @Meta and longtime Kotlin champion, to the board. With his technical leadership and community insight, Sergei will help shape Kotlin's future. 👏kotl.in/7mvxly
1
2
68
4,785
#kotlinconf 2025 vs 2023
Image from Sergei Rybalkin (@lightdelay)
Sergei Rybalkin (@lightdelay) profile pictureSergei Rybalkin@lightdelay13 Apr 2023
I have the best possible reason to miss #kotlinconf this year ❤️
Image from Sergei Rybalkin (@lightdelay)
12
774
Sergei Rybalkin retweeted
droidcon USA (@droidconUSA) profile picture
droidcon USA
@droidconUSA2 Aug 2024
Let's give it up for @lightdelay hitting the #dcnyc24 stage 📣 Explore K2 #Kotlin compiler & its impact on production environments. Discover how K2 enhances performance & efficiency in Kotlin compilation with insights & benchmarks from Meta. nyc.droidcon.com/sergei-ryba…
Image from droidcon USA (@droidconUSA)
1
2
640
Replying to @nat_davydova @alexbalandin
Пустой репозиторий - это абсолютно нормальная история у фреш градов и людей которые были интернами, особенно в крупных компаниях
1
79
Replying to @igrekde
Интересно еще что для того чтобы переехать без партнера достаточно было бы £4к
1
463
Replying to @xnimorz
☢️BA has a underwhelming films selection! beware
1
99
Replying to @katellaevgenii
Обратись в NHS, окажется что у тебя всё хорошо
1
196
Replying to @Mi5akaa
В Европе тоже можно столько зарабатывать, но это сильно сложнее.
2
518
Replying to @igrekde
nice!
1
774
15 years less backwards compatibility compared to java
James Ward (@JamesWard) profile pictureJames Ward
@JamesWard30 Jan 2024
What is the "killer feature" for server-side Kotlin (existing or not)?
7
600
Sergei Rybalkin retweeted
Nicola Corti (@cortinico) profile picture
Nicola Corti@cortinico26 Jan 2024
My team is hiring #AndroidDev which wants to work in OSS! Don't be shy. And yes he's my manager 👇 – at Berlin, Germany
vjeux ✪ (@Vjeux) profile picturevjeux ✪
@Vjeux25 Jan 2024
Just saw @Eli_White at the Meta internal eng fair! If you are excited about React for the iOS and Android ecosystems, he’s hiring ;)
Image from vjeux ✪ (@Vjeux)
5
7
75
11,721
Heaving both of your 2FA factors on one device is a bad idea. How do people solve the second device problem? especially when travelling I just found myself in a situation where my password manager required a physical device that I don’t have with me
366
Sergei Rybalkin retweeted
Egor Tolstoy (@HeyTolstoy) profile picture
Egor Tolstoy@HeyTolstoy18 Jan 2024
Try out the Alpha of K2-based IntelliJ plugin and share your feedback! 🎉 blog.jetbrains.com/idea/2024…
Image from Egor Tolstoy (@HeyTolstoy)
2
10
49
4,738
Replying to @katellaevgenii
Тут есть очень интересная грань, I live in London начинают воспринимать в Турции и восточнее - Индия, Китай, Индонезия и другие. На запад пойдешь - всё наоборот с каким-то экстремумом в районе Баварии где переспрашивали и по три раза
1
204
Sergei Rybalkin retweeted
Artem Pianykh (@artem_pianykh) profile picture
Artem Pianykh@artem_pianykh9 Jan 2024
In other news, I'll be talking about Java compiler hacking, type systems, flow-sensitive type inference, and AI* at WITS/POPL. Come say hi if you're going to be around! popl24.sigplan.org/details/w…
2
6
644
Replying to @nat_davydova
Через несколько итераций коррекции обычно достаточно хорошее качество получается (по крайней мере для пет проекта)
1
123
Replying to @nat_davydova
Немного удивлен что референсы предлагается брать не с midjourney или другого genAI который может отрисовать концепт
1
607
Replying to @anioutkajarkova
Я так делал только с виски когда уставал быть гуглдок-инженером
1
140
Replying to @igrekde
lol
1
1,258
Is there a lightweight Json parse for jvm? I want to use it as a part of a kotlin build, and figured out Jackson classloading is too heavy even for compilation with daemon. need minimal classloading, fast runtime (no regexp under the hood).
3
2
713
Load more