andreyka26_se
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Hey, I'm software engineer at Microsoft, with 8+ years of experience. Here we are talking about F(M)AANG big tech interviews: leetcode, system design and corpo life.

YouTube: @andreyka26_se
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TikTok: @andreyka26__
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Thinking about writing the article about Prague -> Dublin relocation, the process, what you should know, pitfalls, pros/cons of country (how I see it) etc?

Pls thumb up/down if you are interested, and leave questions you’d like to be covered
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Daily 368th day streak

I haven't solved yet as was working whole day. But it seems for now as nice one for sliding window (not confirmed), I just have an idea.
Will solve once I go back home

UPD: yes it is sliding window that is extremely rare on Daily, and it is amazing problem for that patter. I definitely recommend!

https://leetcode.com/problems/length-of-longest-subarray-with-at-most-k-frequency/?envType=daily-question&envId=2026-08-12

#daily #medium #pattern
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Daily 369th day streak

Segment tree💀💀💀
Good luck :)

Problem is pretty long, takes time and I would say hard, even if you know segment trees (I failed fully complete it on my own)

https://leetcode.com/problems/longest-substring-of-one-repeating-character/?envType=daily-question&envId=2026-08-13

#daily #hard #pattern
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By the way, update about AI first project.

Today (yesterday) was one more day of 3 engineers were "yes, we have no fucking idea why we get 95% connections not being established, while 5% were sometimes".

Managers are all amazed by that update, but this is legit what we were able to get (and it is not only noname mid devs like me, but one staff💀)

Networks are fun, but not with AI slop projects
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LOL. I have never seen the guy, as I was finishing masters remotely from Prague, but I do remember the avatar and his name. World is really tiny...
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It is , I guess, 5th day of d bugging fucking AI project by 5 engineers cross timezones…

First time in 5 last years of career I want to go to vacation
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Daily 370th day streak

Amazing problem. Definitely recommended. Has pattern.

The solution is just a form of solution from "Daily 368th day".

https://leetcode.com/problems/maximum-length-substring-with-two-occurrences/description/?envType=daily-question&envId=2026-08-14

#daily #easy #pattern
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btw, now gestalt is over. I have enough coins for T-shirt (as bunch of my ex-Microsoft coworkers had T-shirts from LC).

Now feel much better😁
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andreyka26_se
It is , I guess, 5th day of d bugging fucking AI project by 5 engineers cross timezones… First time in 5 last years of career I want to go to vacation
We found the root cause. I mean one senior in US (blindly or not) did a fix and it helped. However it shouldn’t.

Then I investigated why it helped? And it took me 4 hours of checking how rust runtime and thread pool works internally, what kernel does with socket.accept(), socket.recv(). What is the difference between blocking recv() and non-blocking .recv() via epoll.wait() (essentially how your async I/O works in high languages)

Do you want to see simple use case with deep dives into kernel and why it happened(probably short video or/and post here)?
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