Aleksandr Grechukhin

Leading 4 engineering teams (~28 engineers) building core systems for public transportation ticketing across Germany. Established clear ownership, people management practices and streamlined processes. Stabilized legacy platform, reduced incidents and improved release reliability. Introduced engineering standards and supported platform modernization in collaboration with infrastructure teams. Stack: PHP, AWS, Kubernetes

Built and led a ~25-engineer organization delivering multi-market e-commerce platform. Hired and mentored teams, introduced end-to-end engineering processes and strong development standards. Reduced AWS costs by 40%. Led platform modernization: EC2 → Kubernetes, monolith → microservices, Zend/PHP5 → Symfony/PHP8, Vue.js frontend. Improved performance (3× faster TTFB) and launched multiple international stores. Skills: Hiring, Team Leadership, Kubernetes, Cloud.

1) Managing team of developers to support and improve current shop system and middleware API (REST) 2) Design of the shop system, working under architecture. 3) Participating in recruiting process, interview process 4) Planning resources 5) Performance, metrics 6) Managing, development, support more than 30 shops across all Europe

Provide communications between all parts of a system: mobile, frontend and backend. 1) Implemented REST-interface to communicate between Mobile application and frontend: data, filters, aggregations. 2) Communication between frontend and backend (Rabbitmq). 3) Building products filters for frontend/mobile, data preparation through aggregations in Elastic Search 4) Performance update through code update. (Thank you, blackfire:)) Stack: PHP Symfony MySQL MongoDB RabbitMQ Elasticsearch Blackfire

1) Replaced Factfinder to ElasticSearch to build shop filters system on all internet-shops of a company, 2) Started working with new communication tool between ERP and shops (RabbitMQ instead of file exchange) 3) Started working with migration from MySQL to MongoDB Stack: PHP, Symfony MySQL MongoDB RabbitMQ Redis, Memcached Elasticsearch Blackfire, xDebug

• http://justclick.ru – russian internet-service for infobusinessmans №1 • Used technologies: PHP5/MySQL, MongoDb, Memcached, particullary Zend Framework (for example all classes to working with databases are descendants of Zend_Db_Table_Abstract and other), Javascript (jQuery, pure) • Highload projects: we are sending just a few millions emails everyday for our subscribers and our clients customers, we have millions subscribers and clients of our customers.

Worked with two projects: http://domino.com (big e-commerce projects by selling interior items, internet-version of Domino Magazine – popularest interior magazine in US, you can buy anything you see on a paper pages in shop, used technologies: Yii 1.x, MySQL, MongoDb, angular/node); Eric Gross Academy (clone of Khan Academy; used technologies: Angular, NodeJS, MySQL) • In a work we are used companies developments: https://github.com/clevertech

• Shina30.Ru – e-shop by selling auto tyres and wheels. • Used technologies: PHP5/MySQL, jQuery, XML parsing, YML • Management Team: 3 programmers, 1 designer

• Krolik.ru – social network for a creative people (project was closes in 2009, http://www.sostav.ru/articles/rus/2009/15.01/news/images/37.jpg) • Used technologies: PHP/MySQL, Jabber (for private messaging), ffmpeg (to processing video), mogilefs (for project filesystem), jQuery and other • Highload project, more than 100 hits per second (in 2008).

Millions of web-projects with different roles.