Senior iOS Engineer

Our mission is to become the global standard for addressing. Street addresses weren’t designed for 2025. They aren’t accurate enough to specify building entrances, and they don’t exist for parks, rural areas and many parts of the world. This makes it hard to find places and causes problems and inefficiencies on a global scale.

That’s why we created what3words. We divided the world into 3m squares and gave each square a unique combination of three words. It’s the easiest way to find and share precise locations.

Over the last year, what3words has been used in 193 countries, and our monthly active users continue to grow at an impressive pace. Our tech is used by emergency services, delivery companies, eCommerce businesses, ride-hailing apps and NGOs, and is integrated into the navigation systems of millions of cars around the world.

Role:

The role is for a Senior iOS developer to work on our core app used by millions. We’re scaling a our existing engineering, product and sales team in Ho Chi Minh City so it’s a very exciting time to join if you want to have impact. You’ll be designing, building and scaling our mobile apps and working with engineers and product specialists in London. You’ll be working to deliver our product roadmap, choosing technologies and delivering features. The job will be working closely with the QA, UX and product teams as well, helping to iteratively develop new features and will be based out of Ho Chi Minh City, Vietnam

You:

You should have experience working in a startup environment or high impact environment, delivering apps on iOS, watchOS and others, working with a range of technologies, be able to pick up new skills quickly.

Responsibilities:

• Build and maintain features on our core app
• Collaborate with our other mobile and front end engineers to make a consolidated portfolio of products
• Deliver features end to end from inception and design through implementation and deployment and testing
• Stay up to date on the latest technologies and trends in iOS development
  
  

Essential Skills:

• 5+ years Swift development in XCode
• Familiar with common iOS frameworks (e.g. UIKit, SwiftUI, Combine, Foundation, MapKit, Core Location, Core Animation)
• Extensive end-to-end experience developing mobile apps, from interpreting UX designs to working with product teams on recursive feedback and analytics/testing
• Experience building and distributing components for third parties
• Experience with Git, and GitHub
• Distributing software via Swift Package Manager, CocoaPods, Carthage
• Unit testing/UI testing with XCTest (SonarCloud a plus)
  
  

Desirable Skills:

• Ci/CD experience (CircleCI a plus)
• Objective-C, C++/NDK/JNI experience
• Using RESTful web APIs
• watchOS, and CarPlay experience would be a plus
• Familiarity with GoogleMaps, Firebase, Lottie, SnapKit, Realm, or MixPanel libraries
• Android/Kotlin experience would be a plus
  
  

You will have:

• Excellent communication skills in both spoken and written English
• The ability to talk to techies and non-techies in suitable language
• A passion for development and staying current with technology trends
• The ability to work both independently and with others
• A focus on high quality software engineering work and attention to detail
• The ability to work in a fast-paced, deadline-driven environment
  
  

Extra credit if you:

• Like maps and location based services and know what a GIS is (we love maps)
• Are able to understand the business context of what you’re doing – understand the value your work creates.
• Enjoy learning new skills in scripting languages and how to use those to showcase our products
  
  

Equality, Diversity And Inclusion At What3words

Our mission is to help everyone talk about everywhere, and we believe diverse perspectives make for a better company and better products too. We strongly encourage applications from underrepresented groups and are committed to diversity, equity and inclusion in our hiring processes and company culture.

Benefits

We offer the following benefits to all permanent employees of what3words:

• Competitive salary
• Flexible working (3 days / week in the office and 2 days remote)
• 6 week remote working (work from anywhere) policy
• 25 days paid holiday
• Share options
• Pension
• Private health and dental insurance
• Life insurance
• Wellbeing Days
• Generous parental leave policies
• Family friendly policies
• Employee Assistance Programme (EAP)
• Lunch & learn sessions
• Office perks; free breakfast, snacks & regular team lunches
• Sports and hobbies clubs
  
  

Our mission is to become the global standard for addressing. Street addresses weren't designed for 2025. They aren't accurate enough to specify building entrances, and they don't exist for parks, rural areas and many parts of the world. This makes it hard to find places and causes problems and inefficiencies on a global scale.