Kirlos Yousef

About

Senior iOS Engineer | SwiftUI & UIKit Expert | Proven Track Record in Developing High-Quality Mobile Applications | Passionate about Creating Seamless Mobile Experiences

Kirlos Yousef | Senior iOS Engineer

Birthday: 14 Feb 1998
Degree: Computer Science, BSc
Email: kirlosy@icloud.com

Age: 27
Phone: +1 (201) 777-1054

Senior iOS Engineer with 5+ years of experience, I architect scalable iOS apps and SDKs using Swift, SwiftUI, and UIKit, delivering enterprise-grade solutions. Specialized in performance optimization (35% latency reduction, 60% fewer bugs) and Agile collaboration. Published 5+ apps on the App Store, contributed to and led projects involving geolocation, payments, and offline functionality, and mentored peers in technical best practices. Passionate about solving complex challenges with clean, maintainable code.

Feel free to connect if you'd like to discuss potential collaborations.

Skills

Swift
Objective-C
UIKit
SwiftUI
Cocoa Touch
Multi-threading
Xcode

Git
CocoaPods
Swift Package Manager
SDK Development
Networking
Third-party APIs and SDKs
RESTful APIs

Unit testing
TDD (Test-Driven Development)
XCTest
XCUITest
Localization
Auto Layout

MVC
MVVM
Core Data
Core Location
Notifications
UI/UX Principles
App Store Submission Process

Resume

Education

Computer Science, BSc

2017 - 2020

University of Debrecen (Debrecen, Hungary)

Graduated top of my class
Earned a fully funded scholarship

Side Projects

RaceMe!

GPS-powered running app with real and AI competitors, live leaderboards, and social challenges
Available on the AppStore

Built AI BOTs to simulate human running behavior, enabling competitive races without requiring a large user base
Implemented real-time leaderboards and social features (friend challenges, chat), achieving 99.8% message reliability
Integrated gamification (leveling, milestones), boosting average session time to 15+ minutes

AI SmartQuiz

AI-powered quiz app with custom dynamic quizzes
Available on the AppStore

Integrated OpenAI API to dynamically generate quizzes across 20+ topics, reducing question creation time by 70%
Developed a custom topic engine, allowing users to input any subject and receive tailored quizzes in <2 seconds
Introduced adaptive difficulty algorithms, increasing average session duration by 30%

Focus4

Productivity app with personalized AI suggestions
Available on the AppStore

Created a gamified focus tracker with streaks and calendar insights to boost user engagement
Designed an interactive animated virtual bird companion, boosting daily app opens by 25%

Professional Experience

iOS Software Engineer

2021 - Present

Iomob - The Internet of Mobility (Barcelona, Spain - Remote)

Built a scalable iOS SDK to unify 10+ mobility provider (including Uber, Bolt, and Via), cutting integration time by 40%
Delivered 2 enterprise apps, implementing performance-first architecture and code quality standards
Improved API performance using Combine and caching, reducing payload parsing time by ~25% in real-world tests
Implemented rigorous unit testing for critical SDK components, ensuring reliability for enterprise clients

Database systems Teaching Assistant

2019 - 2019

University of Debrecen (Debrecen, Hungary)

Taught Oracle SQL to 20+ students with personalized guidance
Conducted assessments and practical workshops, achieving a 90% student pass rate
Simplified complex topics to enhance comprehension and engagement

Academic Mentor

2018 - 2020

HÖOK (Debrecen, Hungary)

Mentored and supported 30 students annually
Developed strong relationships based on mutual trust and up-to-date information
Collaborated to create individualized academic and professional plans for each mentee
Regularly submitted detailed reports to senior management