Duyen Hoa Ha

Senior iOS ingénieur

Remote from Baar

  • 47.1952
  • 8.5254
  • Indicative rate €500 / day
  • Experience 7+ years
Propose a project The project will only begin when you accept Duyen Hoa's quote.

Availability not confirmed

Part time

Propose a project The project will only begin when you accept Duyen Hoa's quote.

Location and geographical scope

Baar, Suisse
Remote only
Works remotely most of the time


Project length
Would prefer:
≤ 1 week
Would prefer avoiding:
  • Between 1-3 months
  • Between 3-6 months
  • ≥ 6 months
Company size
  • 2 - 10 people
  • 11 - 49 people


  • Verified email


  • Français

    Native or bilingual

  • Anglais

    Full professional proficiency

  • Vietnamien

    Native or bilingual

  • Allemand



Skills (6)

Duyen Hoa in a few words

12 years of experiences in Information Technologies in software development, including 9 years in Mobile.

+ Analysis of technical/functional needs.
+ iOS application architect & development.
+ iOS application distribution: iTunes Store and B2B (Business to Business)
+ Working methodology: AGILE


Mobile News Channel


Senior Software Engineer

Lausanne, Suisse

July 2018 - Today

- iOS conception/development/improvement/unit test/delivery for ZVV (Zürcher Verkehrsverbund), in partnership with SBB, Datatrans, BLS & Byjuno.
- Atlassian products (Jira/Confluence Cloud) installation/management
- DevOps (Jira, Fastlane, SonarQube)

Mobilire SAS


iOS developer

Paris, France

September 2010 - April 2012

• Development of Comic and romance Reader on iPod / iPhone / iPad (2 years)
+ Image based reader
+ ePub based reader by using RMSDK of Adobe.
+ In-app purchase for iOS applications.
• Ebook content management (DRMed): installation & configuration of ACS4 (Adobe Content Server).
• Comic Reader in J2ME for old mobile phone models: Samsung, Nokia, Motorola, ... (6 months)
+ MIDP 2.0 (Mobile Information Device Profile)
+ Obfuscation of code with Eclipse.
• Distribution of application to iTunes Store.

Rayonnance Technologies

High Tech

Senior iOS developer @Nespresso

Paris, France

May 2012 - December 2015

• Concept, Design & Development of business applications on iOS for NESPRESSO
+ Point Of Sale (POS) Mobile for Nespresso Boutiques in France, Australia, US, Israel, Italy, etc...
+ Inventory application
• Collaboration with partners: Ingénico, Verifone, Zebra,...
• Integration of payment terminals in iOS applications.
• Integration of data acquisition terminals: bar code scanner
• Printing / labeling in iOS applications (via WiFi and / or Bluetooth ) :
+ ZPL - Zebra Programming Language (I & II).
+ PCL - Printer Command Language.
+ Epson ePOS SDK
• In charge of technical problem on iOS projects: reliability, crash test, debug, ...
• Creation of libraries/frameworks to share between applications: SOAP client iOS, synchronization, network tools, etc...
• Deploying the application in InHouse distribution mode



Lead iOS developer @FDJ

Boulogne-Billancourt, France

January 2016 - September 2016

I'm working on several projects for FDJ (Français Des Jeux). My main role in those projects is to improve the performance, the design of their current iOS application (Parions Sport) and to deploy new applications of their roadmap.

As a senior consultant, I have the responsibility to insure that the iOS applications work well as expected, have good performance, without bugs and are up to date with new OS.

Nespresso - Nestlé


Senior iOS Engineer

Lausanne, Suisse

September 2016 - June 2018

Made in Switzerland, Nespresso is the most famous coffee enterprise of the world. Here, I'm participating to:
- create solution design for new demands of Nespresso mobile app
- develop new feature for iOS app that is currently published in AppStore.
- write unit test to make sure every implementation are correct with the requirements
- code review, analyse + fix bugs & improve performance.

Xcode, Swift, Objective-C, Reactive, Quick, XCTest, Instruments, Continuous integration (Fastlane, Jenkins), JSON, Atlassian tools.
  • Solution design
  • iOS
  • Code review
  • Atlassian
  • unit test


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