• Location: Ballybofey–Stranorlar, Co. Donegal, Ireland (Open to 100% Remote)

• Work Auth: Stamp 4 Holder (Full, unrestricted right to work in Ireland)

• Contact: +353 85 195 3851, root@yurikoles.com

• Links: LinkedIn, GitHub, Website, Doc

PROFESSIONAL SUMMARY

Senior iOS Engineer with 14 years of experience building high-performance native (Swift, Objective-C) and cross-platform (Flutter) applications. Specialist in architecting complex mobile solutions for FinTech, HealthTech, and social networking. Expert in integrating mobile apps with hardware via Bluetooth and automating CI/CD pipelines. Based in Ireland, a Stamp 4 holder seeking long-term remote opportunities.

KEY EXPERTISE

• Mobile: Swift (SwiftUI/UIKit), Objective-C, Flutter (Dart), CoreData, Bluetooth integration.

• Architecture: SOLID, Clean Architecture, MVVM-C, Modular Design.

• Backend & DevOps: Python (Django), Ruby on Rails, CI/CD (GitHub Actions/Bitrise), AWS/Linux.

• Tools: Xcode, Firebase, GraphQL, RESTful APIs, Jira.

SELECTED ACHIEVEMENTS & EXPERIENCE

• Senior iOS Engineer — Fitplan (HealthTech) — Dec 2022 – Present

  • Developed and A/B tested a high-conversion referral campaign, implementing deferred deep links to seamlessly route users from external links, through the App Store, and into custom onboarding flows.

  • Engineered a reward-based invite system that incentivised users with free subscription days, driving organic user acquisition and retention.

• Senior iOS/Flutter Engineer — FitTrack (HealthTech) — Mar 2020 – Dec 2022

  • Architected the integration of native Swift modules with Flutter, enabling 99.9% stable Bluetooth communication with 5+ types of medical devices (glucometers, scales).

  • Reduced data synchronisation latency by 40% through optimised background processing.

• Senior iOS Engineer — Chevron (Retail/Utilities) — Aug 2017 – Feb 2020

  • Developed a QR-based fuel pump activation system, ensuring 100% functionality in areas with poor GPS coverage.

  • Improved UI responsiveness by 30% by refactoring legacy UIKit components.

• Senior iOS Engineer — DocChat (Telemedicine) — May 2015 – Jul 2017

  • Led the UI/UX redesign for iPad, resulting in a 25% increase in user session duration for medical consultations.

  • Implemented secure real-time WebRTC audio/video features.

• iOS Software Engineer — Biruza Software, Ukraine — Sep 2013 – May 2015

  • Bestie App (Social Network): Optimised CoreData stack, reducing app launch time by 1.5s and ensuring seamless Facebook friend-list synchronisation for 100k+ users.

• iOS Software Engineer — Go interactive!, Ukraine — May 2012 – Sep 2013

  • Fourcoins (Social Loyalty): Developed core map and chat features for a social networking platform, integrating location-based check-ins and loyalty program discounts.

• iOS Software Engineer — GrandSoftStudio, Ukraine — Feb 2011 – May 2012

  • Canal+ Touch (iPad Streaming): Implemented live and on-demand video streaming features to address technical challenges caused by unstable network conditions for a premium media service.

EDUCATION

• Computer Engineering — Donetsk National Technical University — 2009

ADDITIONAL INFORMATION

• Languages: English (Upper-Intermediate / B2), Ukrainian (Native).

• Availability: Immediate (1-week notice).