Barcelona, ES

Senior iOS Engineer, Frontier

The Global Markets team is a centre of excellence that supports our marketplaces that span across 10 Countries and 2 Regions (Europe and LATAM). It is a cross-functional central team whose role is to accelerate the growth of our marketplaces in all these countries.

We are looking for a skilled iOS Engineer to join the Frontier team in Global Markets as an enabler; someone who can solve complex mobile engineering problems for our marketplaces and promote best practices globally.


  • Working in a multi-disciplinary team, develop client code that can be used by many disparate properties.
  • Develop prototypes quickly but deliver production code that works well in emerging and established markets
  • Be involved in a full spectrum of mobile engineering, including new features and new applications but also SDKs and tools to support experimentation, localisation and customisation.
  • Develop and implement systems using best practices and tools. Document and communicate them.
  • Be creative and experiment with new solutions but pragmatic and committed to code optimisation, maintainability, and quality


  • Extensive experience with Swift & iOS app or component development
  • Proficient with RESTful APIs or GraphQL to connect iOS applications to back-end service
  • Distinctiveness - someone who can help us raise the bar
  • Enthusiasm for solving interesting problems with real intellectual curiosity
  • Experience working collaboratively with geographically distributed teams (we have countries in Europe and Latin America)

Desirable experience (you'll be exposed to this if you haven't worked with it already)

  • Experience with handling data, gathering and processing user metrics (Tableau / Prometheus / Grafana / Datadog / etc.)
  • Familiarity with A/B testing
  • Experience with server side technologies for building services for mobile devices
  • Experience handling legacy code-bases / Objective C