Andrey Z.

Andrey Z.

Kyiv, Ukraine
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About Me

Andrey is a Senior Ruby on Rails Developer with 10+ years of experience using RoR and React.js to create innovative APIs and SPA front ends for clients. He works on complex web development tasks, employs new technologies, and develops detailed, useful, and effective plans as a solution to client needs. With good analytical skills and extensive experience in web development using Ruby on Rails, Andrey’s main goal as an engineer is to find an efficient and simple solution to satisfy business needs.

Frontend

Angular.JS JavaScript React.js

Backend

PHP

Database

MongoDB MySQL PostgreSQL

Other

Graphql Mac OS Ruby Unix Web Crawler

Work history

UpStack
UpStack
Senior Ruby on Rails Developer
2016 - Present (9 years)
Remote

  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

RubyRuby on RailsPHPJavaScriptAngular.JSReact.jsUnixMac OSPostgreSQLMongoDB
Whitespectre
Whitespectre
Full-stack Ruby on Rails Developer
2021 - Present (4 years)
Remote

Working for a company developing products - web/mobile apps and back-end platforms - to help companies grow and innovate.

Ruby on RailsRubyPostgreSQLReact.js
GlobalLogic
GlobalLogic
Full-stack Ruby on Rails Developer
2016 - 2021 (5 years)
Kiev, Ukraine

  • Migrated a project and its assets to Amazon services for better asset handling and a more scalable project.

  • Migrated about 80% of the project components from jQuery to SPA on React.js, considerably improving UI and UX for users.

  • Worked with a client to improve the performance of a large project separated into two services by successfully integrating RabbitMQ.

Ruby on RailsRubyPostgreSQLReact.jsjQueryMercurialRabbitMQ
GlobalLogic
GlobalLogic
Ruby on Rails Developer
2015 - 2016 (1 year)
Kiev, Ukraine

  • Reviewed code and refactored unit and integration tests, decreasing test execution time from 12 hours to 5-6 hours.

  • Made effective architectural design decisions that improved UI and UX and added the ability for admins to upload images directly to the S3 Amazon service.

  • Built advertisement specifications into the platform including VPAID, MRAID, and VAST for administrative use.

RubyRuby on RailsPostgreSQLJavaScriptCoffeeScriptjQuerySlimHAMLGitCode ReviewIntegration TestingUnit TestingArchitectural Design MRAID VAST
Sphere Software
Sphere Software
Ruby on Rails Developer
2015 - 2015
Kharkov, Ukraine

  • Supported and enhanced a management system that helps businesses to choose the right job candidates for an organization.

  • Developed a secure system interface with the Indeed jobsite API and implemented new features for the system.

  • Defined and built new services to generate numerous and complex status reports for the client.

ES6GulpPolymerJavaScriptCoffeeScriptjQueryMySQLRubyRuby on Rails
Envion Software
Envion Software
PHP Developer
2013 - 2014 (1 year)
Kharkov, Ukraine

  • Wrote a clean, modularized, and testable application for a US dance school from scratch using PHP Symfony 2 framework.

  • Created and maintained a custom jQuery calendar for parents to quickly enroll their children for dance lessons.

  • Provided high-level product support by refactoring current codebase of an online bookstore that sells books, CDs, and other contents for children in the UK and US.

PHPJavaScriptSymfony FrameworkMySQLGitjQuerySymfony 2
Freelance
Freelance
PHP Developer
2012 - 2013 (1 year)
Remote

  • Built responsive and native modules and scripts for existing portals and developed sites from scratch.

  • Used the latest development tools to gather requirements, create project specifications, and improve the quality of products and codes.

  • Developed and maintained client web applications and APIs using PHP.

PHPHTMLXMLCSSMySQLJavaScriptGitSVNSSHEclipsePHPMyAdmin

Showcase

Ruby on Rails Engineer - Better Feedback
Ruby on Rails Engineer - Better Feedback

  • Responsible for creating employee feedback, reviews, recognitions, and goals.

  • Focused on improving collaboration between employees and top clients like BuzzFeed, Ubisoft, and Tumblr.

  • Developed new features and improved existing functionality through code refactoring.

Ruby on Rails Developer - InfoFocus
Ruby on Rails Developer - InfoFocus

  • A Ruby on Rails Developer project focused on supporting phone devices using the OOMA API.

  • The Infocus platform offers tools for global enterprise infrastructure and employee collaboration.

  • The project aims to enhance efficiency, productivity, and success through seamless solutions.

Ruby on Rails Developer - Better Interviews
Ruby on Rails Developer - Better Interviews

  • A management system to help businesses select the right candidates.

  • Users can source candidates from various channels.

  • The project focuses on improving interview processes.

Education

Master's Degree, Information Security
Master's Degree, Information Security
Kharkiv National University of Radioelectronics - Ukraine
2003 - 2008 (5 years)