- Led the iOS and macOS development—working on multiple client projects, being involved in all aspects of the software development process from project estimates, development, testing, and releasing it in the App Store.
- Worked on several mobile-calling card applications, integrating PJSIP (Voice-over-IP), a custom JSON API, payment processing, and over-the-air calling rates update.
- Developed a full desktop magnification solution in Objective-C for macOS using primarily the GPU for the magnification and image-filtering algorithms.
- Wrote the several database administration back-ends using Yii (PHP-based) and integrating them with MySQL databases.
- Performed several bottleneck assessments and server optimization—integrating content-delivery-networks (CDN), caching servers, database replication, SQL query optimization, and code reviews/updates.
- Created several Google Analytics profiles with custom reporting scripts and dashboards.
- Tracked and investigated bug reports, coordinated with the client for bug fixes, and publishing software updates.
Technologies: Asymmetric Encryption, Advanced Encryption Standard (AES), Data Encryption, Jira, iPad, MacOS, Cocos2d-x, Memcached, Content Delivery Networks (CDN), App Store Optimization (ASO), Facebook SDK, iOS API, JSON, REST, Concurrent Programming, Functional Programming, App Store Acceptance Process, Data Structures, CocoaLumberjack, Python 3, Yii 2, Yii 1, Facebook API, Swift 3, Algorithms, Firewalls, Databases, PHP 7, iOS SDK, GitLab, Swift 4, Git, Linux, iOS, MySQL, PHP, Python, Swift, Objective-C, Xcode