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Kristina K.
Last update: 15 Oct 2019
MIDDLE
Back-end Developer with more than 4 years of experience in Ruby/Rails and Object Oriented Programming.
Trusty Ruby+rails engineer from Ukraine with vast experience in back-end development.
Main technologies stack: Ruby/Ruby on Rails, Sinatra, Ember.js, AWS, DO, Heroku, MongoDB, PostgreSQL, MySQL, Redis, REST API, GraphQL etc.
All rates are indicative, annual rate includes 10% discount
10% discount on yearly basis
GMT+3 Middle East
Kyiv/Ukraine

Works

EXPERIENCE

Industry Experience

E-Commerce & Retail, News & Media

Product Experience

Responsive Web application, eCommerce web platform, Mobile applications

PORTFOLIO HIGHLIGHTS

Under NDA

Backend engineer

— matchmaking: finding a tasker, service and task; — chat, live chat and chatbot; — payments and reviews; — message center, subscription plans and many others.

The app will facilitate the matchmaking, booking and payment between clients (non-professionals) and taskers (professionals and non-professionals). Users must be served quickly. There are a website and an app so people can consult their tasks when and where they want.

Technologies Stack:

PostgreSQL Ruby Ruby on Rails

Product:

Responsive Web application

BuyBay

Backend engineer

— upload/parsing docs of incoming goods — participate in gem creation for third-party services the app is based on — improving performance for queries and data load — user access control

The e-commerce web app for selling refurbished, used and new goods in different sales channels automatically for owner’s and partner’s products. Separated in several thirty-part services. https://www.buybay.com/

Technologies Stack:

PostgreSQL Ruby Ruby on Rails

Industry:

E-Commerce & Retail

Product:

eCommerce web platform

Works:

Flaredown

Full-stack engineer

— implement d3 graphics for tracking data — server-side rendering (Fastboot) on the staging — improving performance for queries and data load — sharing user graphics through socials and directly to another user — weekly digest emails — white label apps (Caredown) which are based on Flaredown with own data, UI and logic.

A symptom tracker which allows to customize symptoms, share the history of trackings and share advice with another people.

Technologies Stack:

Ember.js MongoDB Ruby on Rails

Works:

LAVO

Full-stack engineer

Interested users can register and search for nearest Laundries available. The mobile app has such features as specific vendor service area, service charge, pick up and drop down schedule etc. The vendor has options to check about active orders, history of orders, change the status of the orders etc.

Technologies Stack:

Ember.js MySQL Ruby on Rails

Under NDA

Back-end engineer

Admin Panel, Push Notifications (APNS, GCM), embed Pubnub service, push notification statistic, sign in via facebook, vk, registration via email, via device token, user roles, abilities, following/followers, likes implementation, back compatibility, internationalization, Amazon S3, background jobs, bootstrap, deploy on Heroku.

Mobile (IOS, Android) apps for news feed. Categorized news with filters, favorite choices.

Technologies Stack:

Amazon S3 Heroku Ruby on Rails Bootstrap GCM APNS Facebook Login API

Industry:

News & Media

Product:

Mobile applications

Under NDA

Back-end engineer

Direct video upload to Amazon S3, js, jquery, bootstrap, responsive design, registration via device token, background jobs, user roles

Mobile app for streaming advertising for technique shop

Technologies Stack:

Amazon S3 JavaScript jQuery Ruby on Rails Bootstrap

EDUCATION

Donetsk National Technical University

Master's degree, Mathematics

Web & mobile development agency #316

100-400
Kyiv/Ukraine
GMT+3

Industries

E-Commerce & Retail, Advertising & Marketing, Photo & Video, Social Media & Communication, Healthcare & Medicine, Blockchain & Cryptocurrency

As an innovative custom software development company, we render only premium software development services and ensure that all our clients remain satisfied. Due to such an approach to custom software development, we have acquired a solid reputation among IT software development companies and remain one of the market leaders now.

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