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Name: Ilya Chesnokov

Position: Senior Backend (Perl, Python, Golang, Lua) Developer

Contact Information

Technical Expertise

  • Languages:

    • Perl:
      • OOP: Moose, Moo, Mo, M, etc.
      • Web frameworks: Catalyst, Dancer, Mojolicious, CGI, CGI::Application, etc.
      • AnyEvent(::*) and other event-based programming techniques (e.g. Mojo::IOLoop)
    • Lua:
      • OOP: middleclass
      • Testing: Test.More, Test.Class.Tiny (custom unit testing framework)
      • Released middleclass-mixin-singleton to Luarocks (code is by the author of middleclass - tests and luarocks package are mine)
    • Other:
      • C/C++ (would love to learn more), Javascript, XML, HTML, SQL (MySQL, Pg, SQLite)

  • Operating systems:

    • Linux (all flavors, currently using Ubuntu/Debian)
    • FreeBSD (from time to time, rarely these days, started from version 4)
    • Mac OS X / Windows
    • Android / iOS / Windows Phone

  • Other technologies:

    • Git - preferred source code tracker
    • Vim - favorite editor
    • MySQL, PostgreSQL, some Oracle
    • RabbitMQ, Redis, Tarantool
    • Webservers: Nginx, Apache, Starman and other Perl-based ones

Professional Experience

  • Custom projects:
    • Trading bot based on the idea of one of my friends Used technologies:
      • Lua: middleclass, Test.More, luacheck
    • http://perljobs.ru - jobs for Perl programmers (in Russian) Used technologies:
      • Perl, SQLite, Bootstrap

Mail.Ru Group, LLC

  • https://mail.ru
  • From January 2021
  • Position: Senior Perl Developer
  • Work area / responsibilities:
    • Support for Company Group-wide payment processing system
    • Participation in implementation of the Continuous Integration (CI) system based on Docker and Gitlab (mainly by setting and clarifying the requirements for sysadmins and testing system they are implementing).

Perceptyx, Inc

  • https://www.perceptyx.com
  • From October 2018 to September 2020
  • Position: Senior Software Engineer, Team Lead (remote)
  • Completed tasks / work areas:
    • Participated in development of new company project helping it move to PAAS model
    • Ongoing support and updates of translation toolkit, working together with project and data management and 3rd party translation service. As a result of that several major and some smaller bugs were fixed, translation-related processes were clarified and the amount of bugreports has lowered significantly.
    • Played a significant role initiating the use of Test::Class::Moose for testing and DBIx::Class as a database interaction layer in the company.
    • Having passed Professional Scrum Master training, played the primary role establishing Scrum processes in the product team of 4 developers (including myself) and a Product Owner.

All Around the World

  • http://allaroundtheworld.fr
  • From August 2016 to September 2018
  • Position: Senior Software Developer / Architect (telecommute)
  • Used technologies:
    • Perl: Moose, DBIx::Class, Catalyst, Test::Class::Moose, Net::SNMP, etc
    • PostgreSQL, Oracle, Redis, MongoDB
  • Completed tasks / work areas:
    • Work for the client - one of the biggest European ISPs:
      • Developed internal RESTful API, well tested and documented
      • Migrated the team from old version of Gitbucket to new version of Gitlab (self-hosted)
      • Fault-tolerance for the internal long-running Oracle data migration script
    • Tau Station browser MMORPG (https://taustation.space - might be blocked in Russia because of Telegram)
      • Features for in-game forums, such as: abuse reporting system, moderation, displaying count of new posts, etc.
      • Built-in issue reporting directly to Github via Github API
      • University course / skills benefits
      • Cooldown timers for any kind of in-game activity with a possibility to reduce them for money
      • Payments processing via Xsolla API (https://xsolla.com)
      • Redesigned together with a team and rebuilt the API infrastructure
      • Email sending test role (opensourced at https://github.com/ichesnokov/p5-test-tcm-role)
      • Put a lot of efforts into standardising / making coding practices better, e.g. convinced a team to formulate and write down database programming guidelines.

UK2 Group Limited

  • http://www.uk2group.com

  • From November 2011 to August 2016

  • Position: Perl Developer (telecommute)

  • Used technologies:

    • Perl, MySQL, REST API, Redis
    • Dancer, Moose, DBIx::Class, Test::Class, AnyEvent

  • Completed tasks:

    • REST API for ordering e-mail addresses, registering domains, provisioning of cPanel accounts, Comodo SSL certificates, VPSes and a lot of similar stuff. This also included communicating with the relevant providers' APIs, of course.
    • Core functionality for different parts of a system: service renewal and suspension, ability to buy service extensions (like additional IP addresses or increased disk quota for VPSes), financial calculations for baskets / orders / services, etc.
    • Performance optimisation improvements:
      • I've completely rewritten domain availability lookup code using AnyEvent and RabbitMQ to make it many times faster, use a tiny amount of CPU / RAM and lookup hundreds of domains in mere seconds.
      • Helped to optimise code for inserting / listing DB objects, which made it about 10 times faster.
    • General architecture-level improvements designed for better system scalability - e.g. suggested to use message queues more intensively to perform some tasks asynchronously instead of making customers to wait for completion of some unrelated processing.

Domain Name Registrar Reg.RU, LLC

  • http://www.reg.ru/en/

  • From July 2009 to November 2011

  • Position: Perl Developer (telecommute)

  • Used technologies:

    • Perl (OO and procedural interface)
    • Catalyst, Template Toolkit, Exception::Class, Moose, Plack
    • Net::Whois::Raw from CPAN, has some my additions
    • Net::EPP module from CPAN, has some my additions
    • Net::EPP::RIPN module, a fork of Net::EPP for registration of .рф (xn--p1ai) domains, developed by myself: https://github.com/regru/Net-EPP-RIPN
    • other common Perl modules
    • Scrum, Agile retrospectives

  • Completed tasks:

    • connection of payment systems (QIWI, Yandex.Money, Money@Mail.Ru, Roboxchange.com, credit card payments)

    • connection of domain name registrars (higher-level domain providers), such as drs.ua (.ua zones), hoster.kz (.kz zones), irrp.net (over 100 zones), tcinet.ru (.rf zone)

    • prepared and completed move from Subversion to Git, which made collaborative work much more easy

S-Groop, LLC (2008 - 2009)

  • http://s-groop.ru/

  • Position: sysadmin

  • Used technologies: Win*, FreeBSD, squid, ipfw, Apache, MySAR

  • Performed Tasks:

    • administration of Win2003-based domain infastructure
    • administration of FreeBSD router (Squid, BIND, Netams, MySAR, Sarg, ipfw)
    • software installation, user support
    • hardware maintenance
    • CCTV
    • backup of critical data

Ryazanhleb, JSC (2007 - 2008)

  • http://www.rhleb.ru

  • Position: sysadmin

  • Used technologies: Win*, FreeBSD, RT, YaBB

  • Performed Tasks:

  • ensurance of smooth operation of production servers in 24x7 mode
  • user's workstations installation and maintenance
  • buying and maintanance of hardware
  • programming of corporate ERP-system (IS-PRO), reports and accounting operations
  • administration of corporate Win2003 domain based network
  • administration of FreeBSD router (squid, ipfw)
  • installation and maintenance of internal corporate forum (YaBB) and task-tracking system (RT)

Other Professional Experience

Education

2001-2007 Engineer specializing "Computational machines, Complexes, Systems and Networks" Ryazan State Radio Engineering University

Spoken Languages

  • Russian - native.
  • English - good reading and writing, reasonable spoken.
  • Spanish - poor, can order bus tickets or food/drinks, and that's it.

Additional Information

  • Have a "Professional Scrum Master I" (PSM-I) certification: https://www.scrum.org/certificates/424850
  • Active community member, participated in a number of Perl and other IT conferences, made presentations on the following subjects:
  • "Using exceptions in Perl development" - YAPC::Russia 2011, Moscow
  • "Experience in development and testing of RESTful JSON API" - Saint Perl 2012, St. Petersburg
  • "Developing documentation for RESTful APIs" - Moscow.pm meetup in Jul 2013
  • "My way to Perl" (lightning talk about myself) - YAPC::EU 2013, Kiev
  • "Once again about queues" (talk about job/message queues, RabbitMQ / AMQP protocol) - YAPC::Russia 2015, Moscow
  • "Methods of concurrent programming" - Saint Perl 2015, St. Petersburg
  • "Is Javascript Perl?" - YAPC::EU 2016, Cluj-Napoca, Romania
  • "Developing in Perl for Raspberry PI" - YAPC::EU 2016, Cluj-Napoca, Romania
  • "Developing RT plugin for fun and profit" - TPCiA 2017, Amsterdam
  • "How to fail a technical talk" - Ryazan, 2017
  • "Testing Lua code with TAP" - Devconf, Moscow, 2018

  • Created and maintaining https://perljobs.ru website - job board for Perl programmers in Russia.

  • Organizer of the local yearly event "Ryazan (Perl|IT) workshop" held since 2015.

Web presence