If you are focused on achieving the best results, good in generating elegant and functional solutions, know how to analyze and optimize the code to improve the app’s performance, this job is definitely for you.

Your responsibilities:

  • Working with new software design patterns and expertly applying them when coding
  • Using classical algorithms and data structures
  • Analyzing conditions and selecting the best ways for data storing and processing
  • Working with SQLite and Realm databases


  • 3+ years of iOS app development experience
  • Proficiency in Objective-C and Swift
  • In-depth knowledge of network protocols and working with sockets
  • Deep knowledge of iOS SDK, basic frameworks (Foundation, UIKit, CoreData, AutoLayout, CoreGraphics, and MapKit), and XML and JSON formats
  • Experience with Push Notifications and understanding of their limitations
  • Experience with SOAP and REST services and knowledge of the characteristics and differences between iPad, iPhone and iPod
  • Experience in app profiling, search for bottlenecks and optimization; good understanding of work with binary file formats, and speed and memory usage optimization
  • Ability to work with low-level devices, such as iBeacon and BLE
  • Knowledge of OpenGL and Metal
  • Knowledge of libPng, libJpeg and Open Source, and experience of Open Source libraries porting are preferable
  • Knowledge of C++ and STL is an advantage
  • Proficiency in English

Contact Us

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Email address:hr@onix-systems.com
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