Saruul-Ulzii (Sarul) Sampilnorov

Senior iOS Developer with 9+ years of experience building scalable, high-performance mobile applications using Swift and SwiftUI, and 16+ years of overall experience in software engineering.

I specialize in transforming detailed Figma designs into clean, production-ready interfaces, with a strong focus on smooth interactions and responsive layouts.

Beyond mobile development, I bring a solid fullstack background (Java, Spring Boot, cloud systems), enabling me to design and integrate scalable backend systems that support long-term product growth.

My focus is on delivering well-structured, maintainable solutions — from UI to backend — with an emphasis on performance, clarity, and long-term scalability.

Languages:

Swift, Objective-C, Kotlin, Java, TypeScript, JavaScript, C#, PHP

Frameworks:

SwiftUI, UIKit, Spring Boot, Node.js, Angular, Vue.js, Unity3D

Cloud & DevOps:

AWS, GCP, Docker, Kubernetes, CI/CD

Some of my projects

Frontend (iOS, Flutter, Ionic) and Backend (Java, Node.js, Express.js)

Learning Management System

• Designed and implemented native iOS screens using Swift, UIKit, and AutoLayout for mobile functionality.

• Added push notifications and payment systems, boosting engagement and scalability by 30%.

• Built backend services using Java/Spring Boot to support scalable features.

• Tech Stack: Java, Spring, Swift, Angular, HTML, CSS, JS, MySQL, GCP - Firebase

Near Me app

• Designed and implemented native iOS screens using Swift, UIKit, and AutoLayout for mobile functionality.

• Developed 100+ backend services for eCommerce and sports betting platforms using Java and Hibernate.

• Improved performance by 15% and ensured seamless frontend-backend integration.

• Tech Stack: Swift, Objective-C, IGListKit, Java, Hibernate, PostgreSQL, HTML/CSS, GCP - Firebase.

Realtime GPS tracking app

• Built a GPS tracking system with real-time sync, notifications, and chat features using Java and Firebase.

• Enhanced tracking and productivity for 200+ users.

• Tech Stack: Swift, Flutter, Java, GCP - Firebase, Firestore, GCM, MapKit, WebSocket.

eCommerce app

• Designed a responsive shopping platform with secure transactions, order tracking, and personalized recommendations.

• Tech Stack: Swift, Objective-C, IGListKit, GCP - Firebase, WooCommerce, MySQL.

Kids Education app

• Developed an interactive learning app using Unity 3D and C#, JavaScript to teach the alphabet and early learning concepts. I created many hobby games using Unity3D, Blender, and Adobe Animation Builder (I used Xbox Kinect for real-time motion tracking for animation).