Sergei

Sergei Zubinskiy
Dnipro, Ukraine | Telegram: Contact @szubinskiy | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)

Summary
Seasoned PHP developer with over 15 years of experience in web development.

Web development experience in platforms like CakePHP, Yii, Wordpress, custom Zend-based
platforms, e-Commerce (Magento, FluentCommerce) etc.

Proven record of providing solutions of the highest caliber, scalable, and secure, on time.

 21 years of experience in programming.
 15 years of experience in web-development (PHP, JS, CSS/LESS)

Education
Ukraine, Dniepropetrovsk National University, Applied Mathematics 2002

Certificates
 Magento 2 Certified Developer
 FluentCommerce Certified Developer

Skills
 As Full stack developer i have good skills in PHP, JS, MySQL, able to work on js/css tasks
without FE developer, got some knowledge on DB optimization.
 Worked with CVS: git, mercurial, svn.
 Have experience with AWS, administration of linux server: able to configure ElasticSearch /
Lamp on server, cron, custom bash scripts, nginx etc.
 Have great experience with NodeRed – used it as middleware for business logic /
postprocessing and 3rd party operations, that could be done outside web-server
 Worked on usual task basis with Redis, Varnish, Fastly.
 Have practice with Virtualbox, Docker, etc.
 Have good experience with RabbitMQ, Gearman
 From JS perspective - worked with Jquery/KnockoutJS
Experience

Webeffector – SEO promotion service:

March 2009 - October 2012

 Worked on implementation of synthetic, morphological analyzer of websites based on
custom parser using multi-thread workers via german. This analysis next going to be used
by another system to promote website itself in Google, Yahoo, etc by 3rd website-satellite.
We used Sphinx as Full-Text search engine for this project.

Allegro Group:
October 2012 – February 2014
Aukro (https://aukro.ua – auction trade platform)

Vcene (https://vcene.ua - 3rd party store price aggregator)

 Support of custom web-site platform based on Zend

 Implementation of additional functionality (custom price rules, catalog listing modifications

– union of 2 separate listing, etc)

 Benchmarking / performance optimizations (DB’s query, cache)

 Worked on background 3rd party store’s custom parser to get up-to-date product base on

project (there were plenty parsers per each website that used Vcene as trade-platform)

 design/business logic changes to support customer experience feedback (via A/B testing)

Vaimo (https://vaimo.com):

June 2018 – December 2018

 Worked on middleware microservice (pure php) – pre/post processing data for analysis to 3rd

party service (image with client’s photo, brief history of website navigation, customer’s personal

health data. Project related to cosmetic suggestions by photo and health-related defined data

 Worked on custom client-oriented modules for Magento 2 (products listing, customer

notification)
Sam-Solutions (https://sam-ecommerce.com/) :

February 2014 – September 2023

https://www.bombardier.com/ (international rail transportation company)

 Worked on custom tool for import/export of products set (DB/CSV) from/to SAP-system

https://www.discountfilterstore.com/ (fridge system seller company)

 as per client requirements implemented custom catalog module for Magento 2 website as

alternative – to speed up shop process

on patronate of Sam-Solutions:

Ewave (https://ewave.com/)

May 2019 – December 2019

 Worked on custom API endpoint for sync purpose of e-Shop key data to 3rd party

services (pure PHP)

 Common ongoing task from project and business team (pure PHP, frontend)

 Worked on implementation of custom Magento B2B enterprise module (customized

as client had unique requirements with complicated hierarchy of business structures)

SomethingDigital

March 2015 – June 2016

Participated in implementation of e-Commerce-related services, worked on implementation

of custom client-oriented modules for different commercial websites, insurance website

 Worked on implementation of service related to pull and parse list of shopping rules

provided by several 3rd-party sources. This was service in pure PHP that validate incoming

data by specification defined in xml config, update data in non-production DB, execute

related rules-oriented set of tests and then apply update to production DB.

 Worked on custom e-commerce module for greeting card (product) customization:

complex WYSIWYG page editor

 Common ongoing tasks from client with new FE/BE features or required modifications
 Redbox (SQLI) (https://sqli.com/)

October 2017 – September 2023

Participated in creation of websites; creation of custom php services; support of ongoing

projects; creation custom client-oriented modules for commerce platform

 Worked on middle-ware NodeRed (node.js) that gives the possibility of product’s
data synchronization by 3rd party requests; customer validation subsytem (pure php):
sequential queries to several 3rd party services with complex logical thread, response
processing; custom delayed order submission system (pure php): that sends out
created orders data using 3rd party API to external services

 Implementation of custom export/import (pure php) subsystem that triggers on daily
basis. There were complex conditions and advanced sorting that required by
business department to be applied to exported data.

 Implementation of wrapper to Avatax API (service that provided taxes by address),
modification of address recognize process (by several additional requests determine
invalid address fields and remove them from requests, etc).

 Integration of STC Payment service to web-shop.

 Integration Fluent Commerce Order Management System to web-shop, including
additional customization.

 Participated in creation of custom interactive web-pages: interactive redraw of
HTML canvas (colors, masks from set of sprites, text) based on responses from 3rd
services (customer data, page type, options on page selected by customer, etc)

As freelancer:
October 2023 – April 2024
Worked on creation of message broker middle-ware (pure php, based on rabbitmq) for sync between
e-Shops based on different platforms java-based and magento’s one. Google Protocol Buffer format
were used for message exchange. Implemented middle-ware validates, processes data and fulfills
synchronization of DB (various e-Shop structures) and also able to process create/update/delete
various media data attachments (images, pdf) related to e-Shops (used Base64 format for
packaging).
Worked on Klaviyo platform integration to website, implemented specific business logic for
subscribers as per client’s requirements.
Participated in extending of Klevu platform integration (product listing).
DefaultValue

April 2024 – December 2024

Implemented custom reporting system based on pure php for e-Shop:

 admin-oriented reporting of customer/product/orders/etc based on date and other requested

filters;

 DB data optimization, queries optimization because of big data (decreased number of joins;

remove some joins by post-processing on php side; update some tables with proper FK and

indexes).

Worked on stand-alone shipping calculator service that used by group of e-shop websites.

Implemented of scheduled custom export system (pure php) : admin-oriented exporting of e-shop

data for analytic department on daily basis by predefined complex logic conditions.

Worked on redesign of website using provided new design documentation via Adobe XD.