iOS Software Engineer, Mobile Applications

Job description

21 Buttons is changing the fashion game - through technology and talent. It has become the leading fashion social network in Europe where more than 6 million users come to get inspired by their favourite influencers and friends’ ready-to-shop content. With over 10 million outfits shared, 21 Buttons allows anyone no matter their audience size to earn revenue from sharing their personal style.

With over 2 years and more than 3000 influencers across the UK, Germany, Italy and Spain, we’re growing faster than ever. Now is the moment to join! 


Our Engineering & Technology team kick-ass in the development of an innovative product that will be used by (hope!) billions of users.

If you’re a curious and collaborative visionary, someone excited about tackling the hard problems in technology, this is the place to be!

You will: 

  • Design, develop, test, deploy, maintain and improve our iOS app;

  • Optimize mobile applications on the iOS platform;

  • Manage individual project priorities, deadlines, and deliverables.


  • Degree in Computer Science, Computer Engineering, related technical field or equivalent practical experience;

  • Software development experience in Objective-C and Swift using iOS;

  • Experience working with Restful APIs to integrate mobile applications to server side systems;

  • Working proficiency and communication skills in verbal and written English;

  • Understanding of recommended design patterns and architectures;

  • Experience implementing complex architectures such as VIPER, MVVM;

  • Experience with functional reactive programming such as ReactiveCocoa;

  • Familiarity with TDD and Continuous Integration

What else is important for you to know?

  • Location: Barcelona, Spain (we do not sponsor work visas)

  • You will report to the CTO

Feel free to get to know us a bit more! Here are a few places you can visit to learn more about what our tech team is doing:


We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status