Kostia Kolesnyk

Senior Software Engineer

N-IX•  June 2020 - Present

iOS application for mobile cell provider. • Architecture review and optimization • Code style implementation, Swiftlint integration • CI/CD improvements • Security improvements • Implementation of key feature for contract users 2005-2009 2001-2005 Swift, Alamofire, Adyen, Firebase Analytics, Fastlane, Bitrise, Apple Keychain

Senior Software Engineer

Eleks•  November 2018 - May 2020

Mobile social application for Saudi Arabia market Find places and events nearby, add photos and reviews, follow friend’s activity. • Designing architecture. • Recreating of the basic functionality in accordance with the legacy React Native app. • Writing unit tests and integration tests • Push notification and deep links implementation. Taking part in the development of Facebook and Apple-ID authentication. • Development of other key features. • Configured CI/CD. Did set up an automated continuous localization process, regular releases to AppStore. Swift, Alamofire, CoreLocation, Fastlane, GitlabRunner, FacebookSDK, Firebase Analytics, Swinject, Apple Keychain, GoogleMaps, GooglePlaces, XCTest

Senior Software Engineer

DataMart•  June 2018 - November 2018

TipBox - application designed for money transfer and tips. • Refactoring and wrapping old legacy code. Separating business logic from the UI. • Security improvements. • Working on an independent networking SDK. • Implementing onboarding flow for the application. Swift, Objective C, Alamofire, CoreBluetooth, CoreLocation, Fastlane, Stripe, Sift, Plaid

Software Engineer

GlobalLogic•  August 2017 - May 2018

Development of native iOS and tvOS apps for US TV channels. • Analytics implementation • Implemented DRM playback, offline encrypted playback • Implemented Google cast streaming • UI improvements, custom animations and transitions • Fixing bugs, preparing for App Store submission Swift, AVFoundation, REST, Alamofire, Google analytics, MOAT, DRM (FairPlay), GoogleCast, AirPlay, Adobe authentication, Fastlane

Software Engineer

Turfmapp•  March 2015 - July 2017

Turfmapp mobile application. Complex application, that has functionality for players (find games, turfs, partners to play soccer), for managers (managing fields and games) and in-game functionality (to manage current games and tournaments real-time, track score, build tournament tables). • iPhone app development and support, adaptation for iPad • In-game functionality implementation using web sockets • Unit Tests, CI/CD Objective C, Swift, Core Location, URLSession, Socket, APNs, MapKit, WebKit, AFNetworking, ReactiveCocoa, GoogleMaps, GooglePlaces, MapBox, Braintree, Facebook services, AWSS3 (Amazon services), UIKit, WatchKit, Google Analytics, Heap, Xcode server, XCTest, Fastlane, Fabric, TestFlight, Braintree

Software Engineer

Stfalcon•  April 2013 - February 2015

UARoads – mobile application to collect and process data of a road surface condition • Collecting data by using accelerometer and gyroscope. • Adding location tags and processing all the data to server. • Implementation of background modes for location services, improving energy efficiency. Objective C, CoreLocation, CoreMotion, CoreData, AFNetworking, Google Maps Coocorama – mobile application with cooking recipes. • Development of key functionality • Distribution to AppStore Objective C, CoreData, AFNetworking, Apple In-App Purchases, Google Analytics