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Sergey K.
Last update: 24 Jun 2019
ARCHITECT /team lead
Senior iOS Engineer with unique expertise in a big list of technologies.
Sergey has more than 17 years of Development experience in many spheres. Started as a backend Engineer, he was always looking for new technologies. For the last 3 years, he has been working as a client-side Engineer.

Lastly, he has been working with these spheres of development:

- Mailing client creation on Ruby Motion, AppKit + CoreData;
- Implemented MVVM + RxSwift + Realm on the existing project;

We suppose Sergey's working with you as a Lead Engineer. He may manage and help your existing team with tough issues for approx. 10 hours/week. - this time will be enough to resolve complex problems.

Contact Sergey to learn more information.
All rates are indicative, annual rate includes 100% discount
100% discount on yearly basis
GMT+1 West/Central Europe
Las Vegas/USA, Dnepropetrovsk/Ukraine, Alicante/Spain, Minsk,Grodno/Belarus




Ruby on Rails


Product Experience

A social e-commerce platform


Mar `18 – Jul `19

1 year


Tech Lead

Sergey was dealing with implementing various payment systems in this Projects. His role was to manage a team of Ruby on Rails developers, constantly implementing new approaches to the existing code.

Daily deal & e-shop website generator.

Technologies Stack:

Ruby on Rails Cucumber Functional testing RSpec Test Driven Development


A social e-commerce platform

Mar `18 – Jul `19

1 year


Tech Lead

Sergey was developing a mailing client on Ruby Motion;

Technologies Stack:

Ruby Swift CoreData AppKit

Mar `18 – Jul `19

1 year


Tech Lead

He was developing this project from Scratch, being a team leader and main developer.

Have friends and anonymous people help you "Make Up My Mind." Add a text/photo/video question, multiple answers in the form of texts/photos, a time you would like the question to be answered in, and then send to friends, anonymous people or both. You will be able to review the results of questions for 24hrs after the time set expires. After 24hrs the results of questions will disappear. When you receive a question, you will select one of the answers, have the option of adding a comment and reply

Technologies Stack:

Realm RxSwift MVVM patterns



Donetsk National University

MA in Applied Math

Web & mobile development agency #147

Las Vegas/USA, Dnepropetrovsk/Ukraine, Alicante/Spain, Minsk,Grodno/Belarus


Education & Science, Logistics & Transportation, Entertainment & Games, Construction & Real estate, Human Resources & Career, Sports & Fitness, Advertising & Marketing, News & Media, Statistics & Atalytics, Fashion & Style, Healthcare & Medicine, Safety & Security, Audio & Music, Environmental Activism & Social Organisations

Full-cycle custom web and mobile application development, support and consulting