Андрей

Andrii T.
NodeJS, PHP (Laravel 9, Yii2, Symfony6 Behat), Rust, Solidity, AWS (S3, Lambda),
Docker, Docker-compose, MySQL, NoSQL (MongoDB), ArangoDB
Frontend (Vue.js SCSS HTML, integration with SPA: Angular Angular.js React v.16)

Higher education
The NTU «Kyiv Polytechnic Institute», Electronic facility, 1992-1997, Bachelor’s degree

Professional Experience

Company: Crypto/fiat exchange (Under NDA)
Duration: April 2023 – Till now
Role: Senior fullstack (React / PHP) Developer

Project Name: Crypto/web3/fiat exchange (NDA)
Project description: Cryptocurrencies to/from fiat exchanger with lighting mode & cheaper-or-fast rate selector.
Responsibilities: Writing Google sign-in & people API & GraphQL endpoints for a set of exchange or swap
operations & some backend microservices like advertising.
Adjust React markup for the admin panel & some logic on subgraphs to web3 connector
(https://thegraph.com). Develop Postgres structure for the backend & logic layer for React
frontend. Designed custom bundles (RoutingI18n, TranslationDB, PageContent Module,
LiipUploadable and etc.)
Different researches related with Symfony architecture, for example, implemented internal
multikernel.

Technologies: Backend: Symfony4 (Slim4 for microservices), Solidity, subgraphs, GraphQL
Frontend: React v.16, Sass

Company: Rafall (US)
Duration: January 2023 – March 2023
Role: Senior Web3 (React / Solidity) Developer

Project Name: https://raffle-market.com
Project description: This POLYGON-based raffles marketplace is on the US market.
Responsibilities: Writing Google sign-in & people API & GraphQL endpoints for a set of subgraphs &
backend microservices.
Adjust react markup for the admin panel & some logic on subgraphs
(https://thegraph.com). Develop Postgres structure for the backend.
Technologies: Backend: Node.js (Nest.js) Typescript, Solidity, subgraphs, GraphQL
Frontend: react, redux, sass

Company: StartUpSoft for ORDA (US / Nigeria)
Duration: August 2022 – February 2023
Role: Senior Symfony / Node.js Developer

Project Name: https://orda.africa
Project description: Food delivery service in the African market.
Responsibilities: Writing REST API (Symfony) & GraphQL endpoints (Nest.js) for a set of
backend microservices.
Refactor React markup & some logic. Develop MySQL structure.
Technologies: Backend: Symfony, Nest.js Typescript, GeoSpatial, GraphQL
Frontend: react, redux, sass
Company: Hero Teams (AU/US)
Duration: August 2021 – August 2022
Role: Senior Node.js Developer

Project Name: https://play.battlefly.game
Project description: This blockchain-based game is on the worldwide market.
Responsibilities: Writing REST API & GraphQL endpoints for a set of backend microservices.
Refactor React markup for the admin panel & some logic. Develop MySQL structure.
Refactor parsers for use typescript instead js, which gives us a profit in server
resource usage etc
Technologies: Backend: Node.js (Nest.js) Typescript, parsers, GraphQL
Frontend: React (for admin panel only), react bridge

Company: http://teamharbour.com (US) for MyBrokerTools
Duration: August 2019 – August 2021
Role: Senior Node.js/ Fullstack Developer

Project Name: XchangePlus LLC
Project description: This site is used for buying/ selling real estate on the US market. Big real estate portal
with a huge amount of users, various API integrations, AWS
Responsibilities: Writing various parsers for getting information in HTML format from MLS GRID public sites
& optimizing by load speed and data format compressing, writing & refactoring
REST API endpoints for the backend. Refactor React markup & some logic.
Refactor some datatable to use MongoDB instead of MySQL. Refactor overall
database architecture to use all dictionary entities (such as regions, products, industries,
and so on) like models (in separate tables) & add CRUD for him to the admin panel.
Refactor REST API for SPA for use of GRPC server. Refactor parsers for use node.js
instead of PHP, which gives us a profit in server resource usage etc
Technologies: Backend: PHP (Slim) Node.js Typescript, parsers, GRPC
Frontend: React (for admin panel also)

Company: http://sapaso.com (DE)
Duration: February 2019 – August 2019
Role: Senior PHP/ Fullstack Developer

Project Name: http://sapaso.com
Project description: This site used for tracking GYM Customers for back-payments.
Responsibilities: Refactor all database to use PostgreSQL instead MySQL. Refactor overall database
architecture to use all dictionary entities (such as regions, products, industries and so on)
like models (in separate tables) & add CRUD for him to admin panel. Refactor REST API
for SPA for use RPC server. Refactor parsers for use node.js instead PHP, that give us a
profit in server resource usage etc
Technologies: Backend: PHP (Symfony) Node.js Typescript, XML, RPC
Frontend: Angular (admin panel)
 Company: http://finsight.com (New York, NY)
Duration: January 2018 – January 2019
Role: Senior PHP/ Fullstack Developer

Project Name: http://finsight.com
Project description: This site is used for tracking deals on asset backed securities in the corporate US market.
It can be used within or across companies, called issuers\sponsors . Using different type
of categorization by field of industry, statistics and reports by timeline, corporate finance
managers can make decisions regarding loan processes. On a need basis, financial
management can gain visibility into the history of the borrower, calculate profitability and
decide on the amount of tranches and return periods of tranches.
Responsibilities: Writing various parsers for getting information in XML format from government public sites
& optimize by load speed and data format compressing, writing & refactor REST API
endpoints for backend. Refactor Vue.js markup & SPA (Angular for admin panel) services
on frontend.
Refactor all database to use PostgreSQL instead MySQL. Refactor overall database
architecture to use all dictionary entities (such as regions, products, industries and so on)
like models (in separate tables) & add CRUD for him to admin panel. Refactor REST API
for SPA for use RPC server. Refactor parsers for use node.js instead PHP, that give us a
profit in server resource usage etc
Technologies: Backend: PHP (Laravel) Node.js Typescript, XML, RPC
Frontend: Vue.js, Angular (admin panel), React + Redux

Company: http://minexcoin.com (Kyiv, Ukraine)
Duration: July 2017 – December 2017
Role: Senior PHP Developer

Project Name: http://minexcoin.com, https://minexbank.com
Project description: This system use as own company cryptocurrency & build full ecosystem around it. Strictly
speaking site used as landing page for tracking deals \ show current exchange rate and so
on. Also we develop admin panel for control servers, called nodes, for properly working
overall blockchain of this cryptocurrency & payment gates to different exchange platforms &
markets, on which we listed. Also we build large service, called MinexCoin Bank, that used
for decrease volatility of this cryptocurrency.
Responsibilities: Writing backend modules for blockchain explorer, BTC-like blockchain. Some stuff with
parity for ETH based blockchain & ERC20 tokens & Solidity smart contracts.
Writing REST API for SPA. Writing interfaces for third-party APIs & services. Use
RabbitMQ for highload modules. Refactor authorization for use JWT token authorization.
Technologies: Backend: PHP (Yii2) Node.js Typescript, Solidity, RPC, MySQL
Frontend: Angular 2\4 (HTML SCSS).
Company: http://mobipay.ua (Kyiv, Ukraine)
Duration: May 2017 – July 2017
Role: Senior PHP Developer

Project Name: http://mobipay.ua
Project description: Simple administration panel developed on native PHP (for security reasons ☺). Use
PostgreSQL as main DB, develop Restful API for mobile applications (IOS & Android).
Responsibilities: Writing backend as a set of endpoints of REST API for mobile applications .
Writing REST API for SPA. Writing interfaces for third-party APIs & services. Use
RabbitMQ for highload modules. Refactor authorization for use JWT token authorization.
Technologies: Backend: Native PHP, PostgreSQL
Frontend: material UI theme (HTML SCSS).

Company: http:// InstallMonster.ru (Kyiv, Ukraine)
Duration: December 2016 – April 2017
Role: Senior PHP Developer

Project Name: http:// InstallMonster.ru
Project description: Big administration panel developed on PHP (Yii2) used for billing of CPA program.
Heard of overall system was spam file loader, link of which was placed on file loading
resources instead of link for direct file upload.

Responsibilities: Web applications development using AJAX technology: XML, DOM, CSS, JavaScript,
jQuery, PHP (Yii1\2), MySQL.
Some stuff of system (server) programming for pre-configure executable file of loader
& pre-loader (executable for use under different OSes\ version of OSes)
Technologies: Backend: PHP (Yii 1\2) + MySQL
Frontend: CSS, JavaScript, jQuery.

Company: Binopt LLC (Kyiv, Ukraine)
Duration: December 2015 – December 2016
Role: Senior PHP Developer

Project Name: https://binopt.com
Project description: Big administration panel developed on PHP (Cohana 3.1) used for billing / control /
configure of several services & program. WYSIWYG editor for building landing pages from
templates in personal cabinet of landing page owner. All this landing pages build referral
network, for lead generation in overall system, called “playing platform” with IOS\
Android\Desktop version for thousands customers (14k customer registrations per day).
Responsibilities: Web applications development using AJAX technology: XML, DOM, CSS, JavaScript,
jQuery, PHP (Cohana 3.1), MySQL\MariaDB.
Reengineered search data algorithm in huge tables using Sphinx & SphinxSE (engine).
Refactor lead generation procedure from Facebook & other social networks.
Build data interface between billing system and various type of online and offline
(including on-street terminal) payment system, based on XML-interface.
Refactor user private cabinet, where users can control they prepaid services set (for
internet & TV), receive they balance statement, traffic usage, etc.
Technologies: Backend: PHP (Cohana 3.1) MySQL\MariaDB
Frontend: HTML5, CSS3, DOM, JavaScript, jQuery.

Company: Astrafit Ltd (Kyiv, Ukraine)
Duration: July 2013 – December 2015
Role: Senior PHP Developer

Project Name: http://astrafit.com
Project description: Main product is “Visual Fitting Room" widget.
This plugin is installed in an online shop to help customers get accurate body
measurements. The widget utilizes our Fit Analysis algorithm to demonstrate the fit to the
customer. The plugin includes Visual Fit Experience and adaptive human-language
descriptions. The visualizations are based on the individual body parameters of each
customer, and customers receive a 2D/3D body model.
Responsibilities: Corporate applications and databases Web interfaces development, Web applications
development using AJAX technology: XML, DOM, CSS, JavaScript, jQuery, PHP,
MySQL, Linux. Open Source solutions implementation.
Developed administration panel for easy system configure &
testing: MySQL + Silex + Ajax + jQuery + Javascript (using kinetic, canvas graphic
libraries etc)
Developed Web reports graphic representation subsystem.
Technologies: Backend: PHP (Silex \ Symfony 1\2) MySQL
Frontend: HTML5, CSS3, DOM, JavaScript, jQuery, HiCharts.

Company: BEST ISP (Kyiv/ Irpen, Ukraine)
Duration: February 2010 – July 2013
Role: Middle PHP Developer

Project Name: https://best.net.ua
Project description: Regional-level Internet Service Provider with TV network. CRM & billing & control panel
for ISP network infrastructure.
Responsibilities: Storage internet traffic usage to MySQL database from data access & exchange
equipment (access servers, traffic routers etc).Build CRM system for technical support
department, later build interface for third-party tools with the same functionality.
Build data interface between billing system and various type of online and offline
(including on-street terminal) payment system, based on XML-interface.
Refactor user private cabinet, where users can control they prepaid services set (for
internet & TV), receive they balance statement, traffic usage, etc.
Technologies: Backend: PHP (Zend 1\2), MySQL
Frontend: HTML5, CSS3, DOM, JavaScript, jQuery.