Oleksii is available for hire
Hire OleksiiOleksii Teterin
Verified Expert in Engineering
JavaScript Developer
Location
Lviv, Lviv Oblast, Ukraine
Toptal Member Since
April 14, 2014
Alexey is a top developer capable of developing efficient, scalable, and fault-tolerant server solutions for complex problems. He has extensive experience with all levels of software and architecture. Programming is his passion. He loves speed, performance, and optimal approaches.
Portfolio
EPAM Systems Ltd.
JavaScript
Master of Code
Sitecore, ASP.NET, Titanium, PhoneGap, MongoDB, Node.js, JavaScript
MEV
MySQL, Zend Framework, PHP, jQuery, Ext JS
Experience
Availability
Part-time
Preferred Environment
WebStorm, Git, Windows, Linux, MacOS
The most amazing...
...app I've created is an interactive tool for exploring the beauty of fractals.
Work Experience
Senior Software Developer
2014 - PRESENT
EPAM Systems Ltd.
- Created a web portal for medical institute using AngularJS.
- Supported a management portal for one of the world's top sportswear manufacturers.
- Created a testing framework for use in existing and new projects.
- Implemented generation of server side pages for an SPA project using AngularJS.
- Implemented auto-detection of user location using geolocation with fallback to a detection by IP address.
Technologies: JavaScript
Senior JavaScript Developer
2011 - 2014
Master of Code
- Implemented a complex project with 3 web services and a web portal.
- Developed a mobile application on PhoneGap using Sencha Touch for iOS and Android platforms.
- Participated in the development of the front-end of 5 websites.
- Created a slidecast player with audio.
- Developed an interactive video player and web editor for preparing the necessary video.
Technologies: Sitecore, ASP.NET, Titanium, PhoneGap, MongoDB, Node.js, JavaScript
Web Developer
2009 - 2011
MEV
- Mastered Ext JS and used it on a creation admin panel for 5 web sites.
- Implemented a Xapian Search Engine for theevolutionstore.com.
- Developed 8 web sites.
- Created an image tool library on PHP for resizing and cropping.
- Learned to write clean, readable, and reusable code.
Technologies: MySQL, Zend Framework, PHP, jQuery, Ext JS
Web Developer
2005 - 2009
TWS Solutions
- Developed 6 web sites.
- Created a world map on Adobe Flash.
- Acquired experience with MS SQL, SQL procedures, and triggers.
- Developed fully functional single page sites using jQuery.
Technologies: Microsoft SQL Server, ASP.NET, ASP, jQuery, JavaScript
Software Developer
1996 - 2004
Freelance
- Created an application for entering, storing, ordering, and printing text with special metadata. Used the platform DOS, Turbo Pascal language, Turbo Vision library, and OOP paradigms.
- Created an application on MS Access for storing and manipulating text for a publishing company.
- Created an application for entering, validating, and collecting a special type of financial data using Delphi.
- Created an interactive financial calculator on Flash for calculating different loan values over time.
- Created a pure AJAX-driven web site, before jQuery was released.
Technologies: Delphi, Visual Basic for Applications (VBA), SQL, JavaScript, PHP, Adobe Flash
Experience
HouseTab
HouseTab is a mobile application for payment in bars and restaurants, socializing with friends, sending goodies to friends, and receiving deals.
I was responsible for the back-end REST API and Owner Web Portal, both written in Node.js and using MongoDB and Redis.
I was responsible for the back-end REST API and Owner Web Portal, both written in Node.js and using MongoDB and Redis.
Interactive Video Player
Interactive Video Player is a system allowing users to create interactive videos based on the existing video file or video stream. It consists of a wizard enabling users to upload video and add interactive elements, and a HTML5 video player for embedding interactive video to any web page. Users can generate the embedded video with banners, links, questionnaires, and selectable areas, as well as create endless video chains using links to other embedded videos.
I was responsible for the front-end, video player, interactive elements, and video creator.
I was responsible for the front-end, video player, interactive elements, and video creator.
Object selector system
A web application for collecting, organizing, storing, and selecting/searching objects (especially 3D models and texture files). The application has a control panel for organizing and storing a collection, and has a public part for selecting/searching, previewing, and downloading objects by tags and key words.
Superwijnen
A mobile application for iOS. This app helps users to easily find the best wine and wine offers in the supermarket. It can scan a wine for a score or discover a new wine from the simple filter function. Technologies used: JavaScript, Appcelerator Titanium SDK, and SQLite DB.
Fractal explorer
http://lexxus.github.io/fractals-explorer/An interactive fractal explorer tool capable of changing a fractal's formula and deep diving into the beauty of fractal patterns.
Game of Life
http://lexxus.github.io/game-of-life/A JavaScript implementation for Conway's Game of Life with an unlimited grid size and high performance speed.
Skills
Languages
HTML5, JavaScript, CSS3, SQL, JADE, Less, Visual Basic for Applications (VBA), Delphi, C#, PHP
Other
Back-end Development, Sitecore, SVG
Frameworks
Flux, Bootstrap, Express.js, AngularJS, ASP.NET, Zend Framework, ASP, Ext JS, Sails.js, Sencha Touch, PhoneGap, Titanium
Libraries/APIs
React, Node.js, jQuery, Sinon.JS, jQuery Mobile, Backbone.js, jQuery UI
Tools
Mocha, Grunt, Bower, Gulp, Adobe Photoshop, Adobe Fireworks, Mongoose, Adobe Flash, Git, CasperJS, Karma, NPM, WebStorm, Vim Text Editor, Canvas
Paradigms
Object-oriented Programming (OOP), Agile Software Development, Functional Programming, Model View Controller (MVC), Test-driven Development (TDD), Scrum
Storage
MongoDB, Redis, MySQL, Microsoft SQL Server
Platforms
MacOS, iOS, Android, Windows Phone, Windows, Linux
Education
1991 - 1996
Master's Degree in Physics, Mathematics
Cherkasy National University - Cherkasy, Ukraine