Istvan E.

Mobile Developer

265 dollar
11 years
Odorheiu Secuiesc, ROMANIA

My experience


Project Roccs AppFebruary 2020 - Present

Roccs is a SIP/VoIP app for iOS, can be used for GSM(actual phone number) calls and SIP calls. The app architecture is very simple, now it uses the Apple standard MVC pattern with storyboards.

♣ Swift 5.0, VoIP 

♣ Xcode, GIT 


Project Rebounty AppFebruary 2017 - Present

Rebounty is a mobile business marketplace where people can easily and privately transact on who and what they know. The app uses pure swift, there is no bridging with Objective-C. The architecture is very clean and understandable based on Viper. The project is extended to support white label apps, now we have 3 consecutive apps with different features. The project has two backend services: Firebase and one conventional REST API 

♣ Swift 5.0, Firebase 

♣ Xcode, GIT 

iTunes link:  


Project Lumenshine AppFebruary 2018 - December 2018

Lumenshine is a cryptocurrency wallet for iOS, makes it safe and easy to buy and manage your coins. It’s based on Stellar which is relative a new currency on the market. 

♣ Swift 3.0, Encryption, 2FA 

♣ Xcode, GIT 


Project iAccordion AppApril 2016 - June 2017

iAccordion is a music specific app which should connect to an accordion. This instrument has limits to configure various settings, therefore the app was designed to extend settings and software capabilities. 

♣ Objective-C, Swift, Realm, ReactiveCocoa, Core MIDI 

♣ Xcode


Project 4D Medien GmbH AppsJanuary 2016 - June 2017

4D Medien apps such as the app, the Forever Aloe app, the Kauf vor Ort app represent the frontend of a mobile CMS used by different 4D Medien customers such as Ausgburger Allgemeine Zeitung, Forever Living Products GmbH and others. I am constantly improving and extending the IOS applications. The app can display different assets and layers of information depending on their configuration in the CMS. Such as end customer presentations with video and image galleries, contacts, events, vouchers, html pages, and much more. 

♣ Objective-C, Core Data 

♣ Xcode, GIT 

iTunes links: 

Kauf vor Ort App: App: 

Forever Aloe App: 


Project Meine Fahrzeuge AppJanuary 2016 - June 2017

Meine Fahrzeuge is an app that helps users to manage their vehicles. It has many features. The users can save vehicles related data, upload vehicle related documents, create appointments, use the drivers log, the tank log, service log, repair log, they can also manage the vehicle costs and much more. I am improving, and adding new features to the app and I am preparing it for the next big release. 

♣ Objective-C, Core Data, Masonry 

♣ Xcode, GIT 

iTunes link: id846623915?l=en&mt=8


Rivo ClassicAugust 2014 - January 2016

Rivo Classic is a risk management platform that helps you to manage risk in safety, security and sustainability. I was part of the mobile team. My main responsibility was to keep the rivo iOS app up to date, with new features and design. The client/server communication was the main part of the application. And also the database handling to reflect the actual state played a big role in the app. 

♣ Objective-C, Swift, Core Data, RestKit, Masonry 

♣ Xcode, GIT, UI Automation 

iTunes link:


3D-Zeitschrift, Project KeoskJanuary 2011 - August 2014

Keosk is a platform for digital magazines, newspapers on the iPad, iPhone and Web. As a part of a small team it has been possible for me to touch all areas of functionality on this app: API integration, client/server communication, user interface, PDF rendering optimization, and other features. The most part I worked on was the UI with various animations and PDF related topics. 

♣ Objective-C, Core Data, PDF rendering 

♣ Xcode, GIT 

iTunes link:

My stack






Realm, REST API, Reactive Cocoa, Firebase, Core Data, RestKit, Software Development

Environment of Development


Software testing

UI Automation, Appium




SQL, Swift, Swift 3, PHP, CSS, C++, Java, Objective-C, HTML


Cocoa Touch

IT Infrastructure

Git, iOS



My education and trainings

Mathematics and Computer Science, Informatics - Babeș-Bolyai University2007 - 2011