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Last Friday, some of Serokellers participated in a hackathon in Moscow. Read about the hackathon and their experience in the article.

Serokell at ZHF Hackathon

Last Friday, some of Serokellers participated in a semi-physical [Zero Hydra Failure Hackathon](https://nixhax.github.io/zhf-21.11/index.en.html) in [undefspace](https://undef.club/#about), Moscow.

![event attendants](/files/w2/w2p5yba2.5ef5b309d40d414bbc1dbdeeed5d4cb19cdfbfde.jpeg)

Together with other attendants, we managed to push more 6 PRs in less than 8 hours and fix a lot more packages (due to a fix of  `openjfx` by our site reliability engineer Alexander Bantyev). 

![yx0ymu17.IMG_20211120_004153.jpg](/files/yx/yx0ymu17.IMG_20211120_004153.jpg)

If you want to learn more about the event, you can read a short writeup on the [NixOS Discourse](https://discourse.nixos.org/t/zhf-hackathon-celebration-event/16079/5).

TopDevelopers Interview Serokell CEO Arseniy Seroka

Learn more about Serokell and our recent initiatives by reading this interview from TopDevelopers.co.

> I think that our primary advantage is how we build our team. In the beginning, many of our engineers were friends that we had known for years, and we trusted them. As the company grew, we hired a lot of new people from different continents, but we still maintain this almost family-like relationship inside the company.

Our CEO Arseniy Seroka was recently interviewed by TopDevelopers, a B2B research and rating company that is focused on connecting firms with top IT firms and custom service providers. 

In the interview, Arseniy talks about the founding of Serokell, what he perceives to be the biggest strengths of the company, and some of Serokell's recent initiatives, including Serokell Labs and Serokell Academy. 

The interview also includes his opinion on some of the software development fields like AR/VR, IoT, and mobile. 

You can read the full interview on the [TopDevelopers website](https://www.topdevelopers.co/profile/serokell/191/interview-Arseniy-Seroka).

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<a href='https://www.topdevelopers.co/directory/software-development-companies?utm_source=serokell.io&utm_medium=badge&utm_campaign=email'>
	<img style='max-width:50%;' src='/files/vw/vwvzn9sn.Badge-Top-Software-Development-Companies-2021.png' alt='badge top software developers'>
</a>
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Serokell Data Science Team Takes Part in Open AI Codex Challenge

Serokell came in 158th place in the Open AI Codex competition. Learn more about the competition in this article.

OpenAI Codex is an artificial intelligence system released less than a week ago that generates code based on user requests. On August 12th OpenAI hosted a challenge that allowed anyone to test Codex’s capacities.

Our Data Science team members Dmitry Puzirev and Alexey Khachiyants took part in the competition and came 158th out of a couple of thousands of participants. They had to crack five simple tasks with a twist: using OpenAI Codex as their coding assistant. 

<center>
<blockquote class="twitter-tweet"><p lang="en" dir="ltr">The Codex Challenge is now closed. Congratulations to the 842 challengers who solved all 5 puzzles! Codex is taking a break after assisting with 23,439 completions.</p>&mdash; OpenAI (@OpenAI) <a href="https://twitter.com/OpenAI/status/1425995602236637189?ref_src=twsrc%5Etfw">August 13, 2021</a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
</center>

‘The platform was lagging at first because there were so many participants’, says Dmitry Puzyrev, Junior Data Science engineer at Serokell. ‘But we still managed to complete the tasks and reach top 160. It was a fun experience’.

Serokell at TQuorum Berlin

At the end of August 2019, Serokell's team of developers participated at TQuorum Berlin. Read this event recap to learn more about our experience there and the variety of innovations being done on the Tezos blockchain.

Serokell at TQuorum Berlin 2019

At the end of August 2019, our team participated in the Berlin edition of TQuorum, a global gathering of [Tezos](https://tezos.com/) developers and enthusiasts with a strong focus on building on Tezos. 

## One of the main Tezos events in Europe

Among companies attending were impressive research laboratories like Cryptium Labs, Nomadic Labs, Stove Labs and, of course, Serokell. 

![Representatives of Serokell at TQuorum Berlin](/files/0n/0nvtd28o.IMG_20190822_110936.jpg)

We presented Michelson tooling that we had been working on since February 2019. 

**The Michelson tooling itself consists of the following parts:**

* [Morley framework](https://gitlab.com/morley-framework/morley) — our reimplementation of Michelson typechecker and interpreter, Michelson language extensions, Michelson eDSL (which is basically Michelson lifted to Haskell) and testing primitives for unit, property and integration tests.
* Lorentz eDSL — a more high-level version of Michelson eDSL that we use for writing contracts in productions.
* Indigo eDSL — a high-level eDSL with declarative style of programming, on which we are still working on. 
* Testing support for Lorentz and Indigo.

![Presentation on Morley](/files/gx/gxyqff0u.Tezos_Berlin.jpg)

## Practical workshops on Tezos technologies

The event consisted of series of technical workshops about Tezos and tools for its environment that speakers had been working on. We (especially Ilya) were happy to meet our colleagues from TQ that we’ve been collaborating with remotely.

It's a pleasure to be amongst the companies trying to change the world, and see all the recent innovations in acessibility, privacy, and smart contract language development. To learn in more detail about the solutions presented at TQuorum Berlin, check out the [TQTezos event recap](https://medium.com/tqtezos/recapping-tquorum-berlin-339cc70073b).

Viktor Kazanski

Denis Oleynikov

Pavel Golovin

Mika Logan

Constantine Ter-Matevosian

Alexey Danilevsky

Vladimir Serov

Nikolay Yakimov

Inna Logunova

Ivan Smetannikov

Aleksandr Pak

Leonid Vasilev

Ilya Lubimov

Andrey Borzenkov

Markus Barenhoff

Kirill Kizilov

Kristina Martin

Nurlan Alkuatov

Jay Zelenskyi

Adrián Enríquez

Anton Sorokin

Uliana Sushinskaia

Vadym Salnyk

Vito Canadi

Chris Höppner

Lars Jellema

Yorick van Pelt

Yegor Timoshenko

George Agapov

Kirill Andreev

Brian Kean

Val Baturin

Kyrill Briantsev

John Burnham

Ivan Dolgakov

Kirill Elagin

Pavel Gliev

Joakim Goldkuhl

Ivan Gromakovsky

Kostya Ivanov

Murat Kasimov

Alexander Rukin

Vasiliy Kevroletin

Mikhail Kilianovski

Maxim Koltsov

Dmitry Kovanikov

Artem Kuznetsov

Nikita Lisitsa

Allan Lukwago

Dmitry Mukhutdinov

Alexander Nikolaev

Dmitry Nikulin

Konstantin Andriotis

Artem Ohanjanyan

Ilya Peresadin

Pasquale Pinto

Danya Rogozin

Rinat Stryungis

Alexander Tiunov

Paul Tsupikoff

Mitchell Vitez

Josef Vlach

Mikhail Volkhov

Murad Murzaev

Vladislav Zavialov

Arseniy Seroka

Jons Mostovojs

Felix Stegerman

Roman Melnikov

Jaroslav Shadrin

Marina Sharygina

Leonid Cupikov

Ping Chen

Sergey Litovchenko

Nadir Asanbekov

Dmitry Lifanov

test1

Domagoj Cerjan

Ellina Poponnikova

Dmitrii Susloparov

Damir Garifullin

Aleksandr Pakulev

Kirill Kuvshinov

Roman Alterman

Anton Dobrenkiy

Alexandra Voicehovska

Eduard Sachava

Sandeep Chandrika

Grigory Pevnev

Artem Velychko

Olga Bolgurtseva

Yulia Gavrilova

Zhenya Vinogradov

Alexander Bantyev

Stepan Prudnikov

Moremi Vannak

Fedor Fedorov

Krisztián Ádám

Alyona Antonova

Artem Yurchenko

Diogo Castro

Heitor Toledo Lassarote de Paula

Ilona Prikule

Natalya Kokova

Daria Smirnova

Serokell PR

Gints Dreimanis

Ivan Markov

Andrey Demidenko

Dmitriy Mozhevitin

Iurii Kravchenko

Vlad Shcherbina

Preetham Gujjula

Dina Safullina

Alexey Khaciyants

Dmitri Puzyrev