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Summary

Expertise

Project Highlights

Education

Agency

SO

English:

Upper Intermediate

Sergiy O.

vetted by Youteam

Vetted by YouTeam

Ukraine

UTC +02:00

Ukraine/Kyiv

English:

Upper Intermediate

I am a software engineer with more than 5 years of experience in the IT sphere.

Want to hire this engineer?

Check if Sergiy is available

Expertise

Years of commercial development experience

5 years of experience

Core technologies

Ruby on Rails 5 years
React.js 4 years
PostgreSQL 5 years

Other technologies

Heroku
JavaScript
MySQL
TypeScript
Bootstrap
Cucumber
Git
RSpec
Capybara
Sidekiq
SQLite
CircleCI
Pure.js
SCSS
Jest
Travis CI

Project Highlights

icon
Full-Stack developer

Fee-free financial services

This project was written to provide fee-free financial services. It is an alternative for traditional banks. It appeals to users with mobile-friendly features. The project is created for people who need to manage their money on the go. It is the fastest growing mobile banking challenger. It offers many features for users to expect from mobile banks, like real-time spending notifications, card blocking in case of loss or theft, and instant payments to close people.

Responsibilities & achievements

Developing product based on the project specification, extracting data from micro services, interacting with customers. Refactoring. Cover code by tests. Code review.

React.js
Ruby on Rails
RSpec
Docker
icon
Full-Stack developer

Browser-based online tutoring platform

This is a browser-based online tutoring platform. It connects tutors and students over online video. If you are a parent of a child, It is also possible to be present at children's lessons as a separate participant. Users can find tutors who are online and start chatting with them. It has an easy-to-use interface and excellent configuration options that avoid overburdening the user and the best learning environment with all the features such as classrooms and whiteboards etc.

Responsibilities & achievements

Developing product based on the project specification, interacting with customers, refactoring, covering code by tests, code review.

AWS
JavaScript
PostgreSQL
React.js
Ruby
Ruby on Rails
Redis
Docker
Moment.js
icon
Full-stack developer

Delivery platform

Continuous integration and delivery platform One of the most-used tools for developers that process lots of builds per day. It can be configured to build very complex pipelines with cashing, docker layer, security features, on faster machines, where developers can SSH to any job for debug issues or set up parallelism which helps to run jobs faster. The new user interfaces developed in the MVP model and satisfy all user's needs. Every code changes on GitHub or Bitbucket triggers automated tests. Each job runs in a separate container. Each build status sends to emails as notification about failed or success build results.

Responsibilities & achievements

Developіng new features, code reviewing, pair programming, refactoring, unit testing, creating project pages from scratch and build pages which respond on design needs.

React.js
Jest
GraphQL
Next.js
icon
Full-stack developer

Continuous Integration and Continuous Deployment

Fast solution for Continuous Integration and Continuous Deployment. This project reduces testing time for customers, allows developers to focus on building products and care about innovations and new technologies instead of waiting until test builds to finish. It automatically applies parallelism for software test and deployment processes and supports an analytics that adds the ability to see what's breaking after each build.

Responsibilities & achievements

Designing, code reviewing, implementing, interacting with customers, fixing flaky tests, creating synthetic tests, code pagination service for GitHub fetched repositories, implementing new front-end related features and fixing old bugs.

React.js
Ruby on Rails
Redis
Docker

Education

Higher education in Computer Science

Agency

Web & Mobile development agency #12

50-100

GMT+2

Kyiv/Ukraine, Austin/TX

Core Expertise

AngularJS
AWS
Azure
CSS
Express.js
Grails
Groovy
HTML5
Java
JavaScript
Kotlin
Meteor
MongoDB
MySQL
.NET
Node.js
OpenCart
Oracle
PHP
PostgreSQL
Python
React.js
React Native
Ruby
Ruby on Rails
Selenium
Sinatra
Spring
SQL
Symfony
Vaadin
Yii
Amazon Relational Database Service
Bitrix
CSS3
Elasticsearch
HTML
Jenkins
JMeter
Laravel Framework
NoSQL
QA Management
Redis
Swift
CouchDB
MS SQL Server
Postman
TeamCity
Webpack
Zabbix
Zookeeper
MariaDB
Quality Management
CircleCI
Polymer
Vue.js
Bamboo
Flutter
Nest
Google Cloud Platform
InfluxDB
Koa.js
Firebase
Sonarqube
Rollbar

Industries

Education & Science, Business & Productivity, Logistics & Transportation, E-Commerce & Retail, Banking & Finance, Information services & Technologies, Entertainment & Games, Construction & Real estate, Human Resources & Career, Mapping & Navigation, Internet & Telecom, Law & Government, Social Media & Communication, Travel & Tourism, Healthcare & Medicine, Safety & Security, Booking & Rent, Food & Drink, Electronics & Equipment, Books & Catalogs, Home & Garden

Want to hire this engineer?

Check if Sergiy is available