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Rost User

@rostuser

Senior iOS Developer at Tirastel GmbH who developed a custom Apple TV player with offline playback, ads, and advanced controls.

Germany

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At Tirastel GmbH, I developed a custom Apple TV media player using AVFoundation and HLS, with VOD and TV, picture-in-picture, offline playback, downloads, ads, and advanced playback controls.

I migrated the app from MVC to MVVM-R and introduced modular components and Swift Concurrency to improve networking, caching, and playback performance. I also built custom iOS and tvOS interfaces and Focus Engine interactions.

At Vkino, I developed functionality for an iOS cinema ticketing app, including loyalty cards, product recommendations, backend integration, and local data persistence. At WebCreek, I developed an iOS app for oil and gas well analytics with animated data visualizations, REST APIs, JWT authentication, Firebase, and real-time notifications.

Earlier, I maintained a currency trading platform at Simcord LLC and supported banking applications at First JSC Bank “BASIS.” I bring 16 years of software engineering experience across iOS and tvOS apps, media playback, and mobile architecture.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS/tvOS Developer

Current

Tirastel GmbH

Apr 2020 - Present (6 years 6 months)

Developed a custom Apple TV media player with AVFoundation/HLS, supporting VOD/TV, PiP, offline playback, downloads, ads, and advanced playback controls. Migrated MVC to MVVM-R, introduced modular components and Swift Concurrency, improving networking, caching, and playback performance.

Swift Objective C AVFoundation HLS UIKit TvOS Development MVVM R Swift Concurrency AirPlay Chromecast Bluetooth StoreKit 2 Core Animation Core Data URLSession REST APIs JSON JWT Realm SQLite Cocoapods Firebase Git Jira

iOS Developer

Vkino

Sep 2019 - Feb 2020 (5 months)

Developed key functionality for an iOS cinema ticketing app, including loyalty cards, product recommendations, backend integration, local data persistence, and responsive UI.

Swift UIKit Autolayout REST APIs Cocoapods Google API Facebook API Core Data

iOS Developer

WebCreek

Jan 2019 - Jul 2019 (6 months)

Developed an iOS app for oil and gas well analytics with custom UI, animated data visualizations, REST APIs, JWT authentication, Firebase, and real-time notifications.

Swift UIKit Core Animation Storyboards Autolayout REST APIs JWT Firebase Swagger

iOS Developer

Next Chain

Apr 2018 - Sep 2018 (5 months)

Developed iOS functionality for a crypto wallet and real-time messaging platform, including secure transaction processing, custom UI, and VoIP-based group audio/video communication.

Swift UIKit VoIP Cryptocurrency Real time Messaging UI

iOS Developer

Simcord LLC

May 2017 - Apr 2018 (11 months)

Maintained and evolved an iOS currency trading platform, working with real-time socket communication, trading charts, custom UI, multithreading, notifications, and a new Swift-based application.

Swift Objective C Socket Communication Trading Charts Multithreading Notifications

iOS Developer

IT Companies

Aug 2010 - Apr 2017 (6 years 8 months)

Refactored and modernized legacy iOS applications, improving performance, stability, maintainability, and code quality. Developed new iOS applications and features from requirements and UI concepts through implementation and release.

Swift Objective C UIKit Refactoring Performance Optimization Code Quality

Senior Engineer-Programmer

First JSC Bank BASIS

Jun 2005 - Feb 2010 (4 years 8 months)

Supported and enhanced banking applications and the bank website, including data import/export, core business workflows, and applications and infrastructure troubleshooting.

Banking Applications Data Import Export Troubleshooting Infrastructure