- Location: Tullamore, Co. Offaly, Ireland
- Email: root@yurikoles.com
- Mobile: +353851953851
- LinkedIn: linkedin.com/in/yurikoles
- Github: github.com/yurikoles
- The latest version of this CV is always here:
- Doc format: doc.yurikoles.com
- Web format: yurikoles.com
Summary
Highly motivated and experienced Senior Software Developer with over 10 years of expertise in native iOS (Swift, Objective-C) and cross-platform Flutter development. Proven ability to architect, develop, deploy, and maintain complex mobile applications from concept to launch across diverse industries, including Fintech, Fitness, Social Networking, and Utilities. Skilled in full-stack development (Python/Django, Ruby on Rails) and DevOps practices (CI/CD). Seeking a challenging long-term remote contract role where I can leverage my technical skills and experience to contribute to innovative projects within an open-minded company.
Key Skills
- Mobile Development: Swift, Objective-C, Flutter, Dart, UIKit, Cocoa Touch, Core Data, Core Location, MapKit, Push Notifications, HealthKit Integration, Bluetooth Device Integration
- Architecture & Design: OOP, OOD, SOLID, Design Patterns, Mobile Application Architecture
- Development Practices: Agile, Scrum, Unit Testing (XCTest), Performance Optimisation (Core Graphics/Quartz), CI/CD (Setup & Maintenance), Git, SVN
- Backend & DevOps: Python, Django, Ruby on Rails, LAMP/MEAN Stack Administration, Server Maintenance & Recovery
- Tools & Platforms: Xcode, CocoaPods, TestFlight, App Store Connect, Firebase (Crashlytics), Jira, Redmine
- Languages: English (Upper-Intermediate), Ukrainian (Native)
Professional Experience
Freelance DevOps and System Administrator | Remote
February 2022 – Present
- Automated CI/CD pipelines for various backend, frontend, and mobile applications, improving deployment frequency and reliability.
- Configured, managed, and maintained web hosting servers (LAMP & MEAN stacks), ensuring high availability and performance.
Freelance Senior iOS Software Developer | Remote
July 2014 – February 2022
- FitTrack (Flutter Fitness App):
- Spearheaded the integration of native Swift iOS modules with Flutter for seamless communication with fitness hardware (watches, scales, tonometers, glucometers) via Bluetooth.
- Chevron (Petrol Station App):
- Developed and implemented new user-facing features and UI enhancements across the application.
- Engineered a key feature enabling fuel pump selection via QR code scanning, providing a fallback mechanism when GPS is unavailable.
- Fitplan (Gym & Home Workouts App):
- Launched a new marketing invite campaign, incorporating A/B testing and deep linking functionality to drive user acquisition.
- Improved user onboarding flow related to the campaign, enhancing conversion rates.
- DocChat (Telemedicine App):
- Led the redesign of the iPhone and iPad user interface (programmatically using frames) to improve user experience.
- Optimised real-time communication features (text, audio, video) for online medical consultations.
- Atracx (Indoor Navigation POC):
- Developed a Proof-of-Concept application for indoor mall navigation using Bluetooth beacons, demonstrating feasibility and potential features like proximity-based notifications.
- Go Problems (Go Game App):
- Significantly optimised 2D drawing performance using Core Graphics (Quartz).
- Improved the efficiency of browsing large datasets of predefined game situations.
- Contributed to the development, maintenance, and feature enhancement of numerous other small-to-medium scale iOS applications.
Middle iOS Software Developer | Biruza Software | Donetsk, Ukraine
August 2013 – July 2014
- Bestie App:
- Focused on implementing data persistence using CoreData, including fetching, parsing, and storing data from the backend API.
- Developed and maintained continuous synchronisation of Facebook friend lists with the application’s backend.
Middle iOS Software Developer | Go interactive! | Kyiv, Ukraine
June 2012 – August 2013
- Fourcoins (Social Loyalty App):
- Developed core map and chat functionalities within the social networking application.
- Implemented features for a loyalty program allowing users to gain discounts via location check-ins.
Junior iOS Software Developer | GrandSoftStudio | Donetsk, Ukraine
June 2011 – June 2012
- Canal+ Touch (iPad Streaming App):
- Gained experience implementing live and on-demand video streaming features, addressing challenges related to unstable network conditions.
- Le Bled (Education App):
- Responsible for fixing bugs and preparing the application for new feature releases.
Education
Department of Computer Engineering
Donetsk National Technical University, Ukraine (2005 – 2009)
Code Examples
- GiphySearch: github.com/yurikoles/GiphySearch
- CarsTest: github.com/yurikoles/CarsTest
Additional Information
- Possess temporary protection status in Ireland, granting full legal permission to work.
- Available to contract as a private entrepreneur incorporated in Ukraine (ФОП 3-ї групи).