Hamza Öztürk, Developer in Istanbul, Turkey
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Hamza Öztürk

Verified Expert  in Engineering

iOS Developer

Istanbul, Turkey

Toptal member since November 10, 2022

Expertise
GitHubiOSXcodeSwiftDatabaseWebRTCEmbedded Systems EngineeringRoboticsAlgorithmsVoIP
Bio

Hamza is a customer-focused software professional with superior communication skills and expertise in various technical platforms. He understands and meets client and employer needs and develops highly functional, robust, and easy-to-use applications. Hamza excels as a hands-on developer, overseeing the work of software teams.

Portfolio

Kamion Lojistik Teknolojileri
iOS, Swift, Xcode, Firebase iOS SDK, Alamofire, OneSignal...
Açık Deniz Bilişim
iOS, Xcode, Swift, XMPP, XMPPFramework, Openfire, Push Notifications, WebRTC...
Turkcell
iOS, Swift, Xcode, Core Audio, Push Notifications, Mobile Apps, iOS SDK

Experience

  • Database Management Systems (DBMS) - 15 years
  • GitHub - 15 years
  • iOS - 13 years
  • Xcode - 12 years
  • Swift - 7 years
  • XMPP - 6 years
  • Openfire - 6 years
  • WebRTC - 3 years

Availability

Part-time

Preferred Environment

iOS, Xcode, GitHub

The most amazing...

...app I've developed is a music app called fizy, with over 10 million downloads, ranking number one in the App Store.

Work Experience

Senior iOS Developer

2019 - 2022
Kamion Lojistik Teknolojileri
  • Developed an app that connects shippers and truckers in the largest economy of the Middle East and North Africa.
  • Tracked and fixed bugs using Trello as a reporting tool.
  • Participated in all processes from the design stage to the release of the application.
Technologies: iOS, Swift, Xcode, Firebase iOS SDK, Alamofire, OneSignal, Location Services and Maps, Zeplin, Push Notifications, Mobile Apps, iOS SDK

Senior iOS Developer

2016 - 2022
Açık Deniz Bilişim
  • Developed an app that provides a secure, end-to-end encrypted collaboration and messaging platform for enterprises.
  • Tracked and fixed bugs using GitHub Issues as a reporting tool.
  • Created strategies to ensure compliance with new standards.
  • Handled debugging and troubleshooting with a high success rate.
Technologies: iOS, Xcode, Swift, XMPP, XMPPFramework, Openfire, Push Notifications, WebRTC, Alamofire, RealmSwift, Firebase iOS SDK, Socket.IO, VoIP, Signal Protocols, Encryption, Messaging, Message UI, Background Threading, Mobile Apps, iOS SDK

Senior iOS Developer

2014 - 2016
Turkcell
  • Developed a Spotify-like music app that ranked number one in the App Store.
  • Tracked and fixed bugs using Jira as a reporting tool.
  • Oversaw launch processes, resulting in over 10 million downloads in the first year.
Technologies: iOS, Swift, Xcode, Core Audio, Push Notifications, Mobile Apps, iOS SDK

Experience

Music App for Turkcell

https://fizy.com
This project is a Spotify-like music app developed for Turkcell. I was the sole iOS mobile developer, liaising with the back-end team to integrate back-end services. The project resulted in over 10 million downloads in the first year.

Education

2011 - 2016

Bachelor's Degree in Computer Engineering

Boğaziçi University - Istanbul, Turkey

2009 - 2011

Associate's Degree in Computer Programming

Karadeniz Technical University - Trabzon, Turkey

Skills

Libraries/APIs

WebRTC, Firebase iOS SDK, Alamofire, Socket.IO, Core Audio

Tools

Xcode, GitHub, OneSignal, Zeplin

Languages

Swift, Objective-C

Frameworks

XMPPFramework, iOS SDK, RealmSwift, Message UI

Platforms

iOS

Storage

Database Management Systems (DBMS)

Paradigms

Compiler Design

Other

Programming, XMPP, Openfire, Mobile Apps, Signal Processing, Project Development, Embedded Systems, Robotics, Operations Research, Operating Systems, Algorithms, Programming Language Design, Digital Systems, System Programming, Location Services and Maps, Push Notifications, VoIP, Signal Protocols, Encryption, Messaging, Background Threading

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