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Senior PHP Developer
Sergey Kushnirov

Contact Information

Phone: [open contact info](look above in the "contact info" section)​
Telegram: @serg_abc
Skype: kushnirov555
Email: [open contact info](look above in the "contact info" section)
Linkedin: [open contact info](look above in the "contact info" section)

Tech Skills

Languages: PHP, JavaScript
Databases: MySQL, PostgreSQL, MongoDB, Redis, Memcached, ClickHouse, AWS Redshift /
DynamoDB / S3
Frameworks: Yii, Laravel, Symfony
Message brokers: Gearman, Resque, RabbitMQ
Tools: Composer, Docker, Docker Compose, Git, Supervisor, ELK Stack, XHProof, Grafana​
Tests: Codeception, PHPUnit
Administration: Linux, Nginx, Apache, Bash​
Other: Microservices, REST, JSON:API, SPL, SOLID, DDD, KISS, DRY, TDD, OWASP, PSR
Frontend: JavaScript, ReactJS, jQuery, HTML, CSS

Main Responsibilities​

●​ Development architectures and services from scratch
●​ Optimization performance of applications and databases
●​ Refactoring and code review
●​ Development standards implementation
●​ Lead and hiring development teams

Work Experience (14 years)

February 2022 - till now
Freelance

●​ Software Development
●​ IT consulting
●​ Digital marketing

November 2020 - February 2021 (0.5 year)
Technical Manager / Team Lead, Tripple A (Germany)

●​ Team hiring from scratch (frontend, backend, devops, testers)
●​ Clarification of requirements and breakdown into technical tasks
●​ Development of an e-commerce system from scratch on a microservice architecture
●​ Communication with the customer and team management

August 2019 - November 2020 (1.5 years)
​ Senior PHP Software Engineer, Unicheck inc. (USA)
 ●​ General features / Microservices (REST API, AWS S3, AWS ECS, Redis, Docker, MySQL 8, Nginx,
PHP 7.4)
●​ Databases optimization / Refactoring / Codereview / Performance optimization

August 2016 - August 2019 (4 years)
Team Lead / Senior PHP Software Engineer, PDFFiller inc. (USA)

●​ File Storage microservice (REST API, AWS S3, AWS ECS, Redis, Docker, MySQL 5.7, Nginx,
Symfony 4, PHP 7.2)
●​ Databases optimization / Refactoring / Codereview / Performance optimization / Member of CORE
department

September 2015 - August 2016 (1 year)​
Senior Full Stack Software Engineer (PHP/JS), ClickMeIn (Innovecs) (Israel)

●​ System of analytics and statistics (PHP, MySQL, MongoDB, Memcache, Gearman, AWS S3, AWS
Redshift, AWS EC2, JavaScript, jQuery, D3.js, Clickmein Framework)

May 2014 - September 2015 (1.5 years)​
Middle Full Stack Software Engineer (PHP/JS), Freelancer

●​ Online games for social networks (PHP, MySQL, JavaScript, jQuery, Memcache, My Framework)
●​ Bulk SMS-sending system (PHP, MySQL, JS, Memcache, Gearman, Yii2)

March 2012 - May 2014 (2 years)
Middle PHP Software Engineer, Miritec (Ukraine)

●​ Online forex user cabinet (PHP, MySQL, Memcache, Miritec Framework)
●​ Cabinet for travel agencies (PHP, MySQL, Memcache, JS/ jQuery)

September 2010 - February 2012 (1.5 years)​
Junior PHP Software Engineer, Webmanager (Ukraine)

●​ Online-stores and commercial websites (osCommerce, vamShop, Wordpress, Bitrix)

Education / University / Courses

●​ University: Engineer, 6 years studying at National Technical University of Ukraine 'Kyiv Polytechnic
Institute', Engineering Department;
●​ Courses: SEO, Internet marketing, PPC systems (1 year) – Empo School

Other
●​ Was speaker in meetups:
“Optimization MySQL for PHP developers”
“How to build analytic system and collect a huge data”
●​ Was a teacher in PHP School (https://contact.com.ua/index.php?teacher=92)
●​ Visiting PHP Frameworks Days
●​ Have my own portal: https://dolio.ru/​

Languages: Ukrainian (native), Russian (native), English (upper intermediate)

Hobby: guitar, skiing, sport, girls