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Senior iOS Engineer - TWINT Team

Senior iOS Engineer - TWINT Team

Our partner, TWINT, creates digital innovations in the financial sector. Since being founded in 2014, it has been developing Switzerland’s digital wallet, combining various types of payments, money transfer, coupons and membership cards and much more into a single app. Today, Switzerland’s biggest banks and SIX/Worldline are united in their support of the TWINT app, the Swiss standard solution in the area of mobile payments. With more than 1.400.000 registered users, TWINT is the most widely-used mobile payment app in Switzerland.

To expand our TWINT team in Belgrade, we are looking for a

Senior iOS Engineer

As part of a team of senior iOS engineers, you work on ensuring that the TWINT iOS App is the best payment app in Switzerland. You help to improve user experience, realize new use cases for our customers and improve the quality of our app.

You are fully integrated into our team of top-notch developers. You will work on a large and complex codebase that is the basis for all the existing TWINT apps. You regularly interact with our product management, quality assurance teams, and our implementation partners. The code you write will go live in one of the most-downloaded applications in Switzerland.

Your Responsibilities:

  • Develop the native TWINT iOS Application
  • Work in a team using modern tools and practices
  • Participate in code reviews, tech workshops and retrospectives
  • Interact with product management to improve the user experience of the application
  • Work with quality assurance, business analysts and architects to find the best way to solve challenging problems

Your Profile:

  • Master in computer science, information technology, electrical engineering or related subjects
  • 4 years of experience in native iOS software development
  • 6 years overall experience in professional software development
  • Proficient in Objective-C, Swift, Git, Xcode, the Cocoa SDK, XCTest
  • You know how to talk to a backend: REST, JSON, etc.
  • These iOS-specific skills are a plus: CoreData, CoreBluetooth, iBeacons
  • You have a high sense of quality and help others achieve the same (through code reviews etc.)
  • You are communicative, eager to be part of our team and speak English fluently
  • Strong analytical skills and eagerness to learn

Our Offer:

  • Make a difference in how Switzerland pays
  • We are a large, dynamic team of top developers from several countries
  • Work with cutting edge technology using a modern toolchain
  • You will have an opportunity to grow and find tasks that suit and expand your skills
  • Visit Switzerland, meet the team and see the product in action
  • Competitive salary and a variety of fringe benefits
  • Personal development/education (conferences, workshops)
  • Excellent work life balance
Apply for this job

Or, know someone who would be a perfect fit? Let them know!


Working with us will provide you with exciting career opportunities in an international environment, a wide range of fringe benefits and the chance to develop further professionally as well as personally.

You will work out of our development center, which is located in the Belgrade Science Park. A modern working environment with free coffee, beverages, fresh fruits and a refrigerator full of candies along with a relaxation area with playstation and lazy bags await you.


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