[System Design Bits]: The way to HTTP 2 ☃️

Hello folks, finally, the the first part of the HTTP protocol series is arrived 🚀.

In this video, we're going to cover the following:
1. What’s HTTP and how the request is made through the browser
2. Evolution of HTTP and Web, from simple syntax to fully fledged protocol
3. HTTP 1.1 Issues and prerequisites from HTTP 2.0
4. Web Performance Tricks of HTTP1.1, and why they are antipattern now

I've decided to split the topic into 2 videos due to the large size and material complexity. The second part of the video will be published in a few weeks (hopefully)

I’d be happy if you re-share this post to your friends so more people can find it. Thank you!

Happy Upcoming New Year ❄️
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Всем привет! Наконец то закончил работу над серией видео по HTTP 🚀.

В ней мы разберемся:
1. Что за зверь такой HTTP, как браузер делает запрос
2. Эволюция протокола и веба, от простого синтаксиса, до полноценного протокола
3. Проблемы протокола и пререквезиты для второй версии.
4. Какие подходы используются для улучшения производительности веб-приложений, и почему большинство из них теперь антипаттерн (но многие до сих пор используют)

Я решил разделить топик на 2 видео из-за большого размера. Вторая часть выйдет через несколько недель (надеюсь)

Буду очень благодарен за фидбек и если пошарите пост с друзьями, в своих каналах. Это мотивирует меня выпускать больше контента.

Happy Upcoming New Year ❄️

https://youtu.be/gxF9fLo5XQw

Exceptional Talent Visa - Personal Experience

Привет👋, сегодня поговорю с Надей про свой опыт получения визы таланта в ЮК. Присоединяйтесь к стриму, если интересно послушать про визу и документы.

Язык стрима - английский
Время: 06.00pm London Time

Запись будет доступна на ютуб канале Нади
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Hi👋, today I’m going to talk with Nadia about my experience of getting UK Exceptional Talent Visa. Come and join the stream, if you’re interested in UK Talent visa and preparing the documents for it.

Stream language - English
Time: 06.00pm London Time

https://www.linkedin.com/video/event/urn:li:ugcPost:7007799658211074048/

Recording will be available on Nadia’s YouTube Channel

🪆(Версию поста на русском, можно найти перед этим постом)

Hello everyone, it's been a while since I last posted on my blog, but there's a lot to share! I mentioned on my Instagram that some of the best ideas come to me while I'm on vacation. In March, I embarked on a 6-week vacation to Thailand. It was the perfect opportunity to clear my mind. Eventually, a few ideas popped into my head.

Backstory 🤌

In England, more precisely in London, a sector of the market exists where front-end engineers earn 800k-1M pounds annually 💷 (~50k pounds per month after taxes). Up until a certain point, everything remained in the realm of rumours, until a few friends of mine landed jobs in these companies. As you can guess, it's in the finance sector, specifically Hedge Funds. An idea ignited in my mind: why not give it a shot? And so, a journey lasting 4 months began. As I mentioned earlier, I like my ongoing project at Meta and I wasn't willing to give up on the goal of growing into a Staff role, considering the substantial social capital I had already built within the team and the project.

My primary objectives were as follows ✅:

1. Continuing to work on towards the IC6 level.
2. Getting prepared for the interviews with Hedge Funds.

While the goals themselves weren't particularly challenging, the real hurdle lay in managing my time effectively and I have to keep my preparation in secret since many of colleagues subsribed to my channel (thank you). Throughout these 4 months, my daily schedule resembled the following:

- 8 hours for work
- 5-6 hours allocated to interview preparation
- 1.5 hours dedicated to gym and cardio sessions

I dedicated my weekends entirely to preparation, although I did take breaks every 3-4 weeks for 2-3 days of hiking 🥾. These outdoor breaks were crucial in maintaining my mental well-being. I'll dive into reflections and share about the pre-burnout state a bit later on.

Tactics 🤔

The interview process at hedge funds is a secret. I found myself in a position of uncertainty regarding what to expect during the interview. The role is new and obscure for this kind of company. Plus, I hadn't written on the front-end stack in prod for about a year, but kept a love for it and used it in personal pet projects. Also, it was unknown if a leetcode would be needed (spoiler: no)

Preparation 📚

1. Tackled all bfe.dev problems (~200 problems), a process that spanned about 2 weeks, coupled with an additional week dedicated to speed coding
2. Solved ~300 problems on leetcode. This time it was notably easier than when I did it 2 years ago. On average, I managed to solve 10-15 problems per day. This phase stretched over approximately 5 weeks.
3. Re-recorded the System Design videos I had initially published 2 years ago. These videos were subsequently enhanced with fresh insights and valuable tips derived from subscribers and the YouTube community. (Stay tuned for the updated videos - I'll be posting them soon.) This step was accomplished within about a week.

Combat testing 🚀

It was difficult to go straight to the interview, so I decided to apply to small and medium-sized companies to practise my skills. In total I sent my resume to 34 companies, 29 of them responded, and then 23 of them scheduled interviews. Since my visa is not tied to the employer, companies were willing to interview me.

Result: 21/23 offer received
Minimum: 50K gbp (Senior Principal Engineer)
Maximum: 250K gbp (Staff Engineer)

I won't list the companies now, if interested, let's discuss it in the comments. The interview questions were very different, some companies have no coding part at all and it was more about experience and theory knowledge. I liked most of all when they gave a practical task for 2-3 hours and the interviewer came only at the beginning and at the end. Let me know if you want to see interview problems from these companies.

#interview #career

X Time ⏰

The list of hedges where a front-end engineer can go is quite small, I’ve applied to four companies.

1. Jane Street.
2. Two Sigma
3. Jump Trading
4. Citadel

I received responses from all of them quite quickly and interviews were scheduled. The interview process took longer than the preparation itself. Everything took about 2 months to complete. Was I successful in getting an offer? What is the interview process like with these companies? What's up with the promo on IC6?

The continuation follows in part 2, which I'll post in a day. In the meantime, write your comments, I'll be happy to answer if you have any questions. Thank you for being my subscriber 🙂

#interview #career

In the next part, I'll talk about the conclusions I made. What could have been changed in the preparation process, how I almost got burned out. How you can negotiate offers. I'll start posting tasks from my interviews after part 3. However, I won't post the company where I was asked it ( standard NDA)

Stay tuned and thanks for reading! 🙏

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