Senior iOS Engineer

As a Senior iOS Engineer at what3words, you'll be responsible for building and maintaining features on our core app while collaborating closely with other mobile and front-end engineers. You'll deliver every feature end-to-end, from conception and design through to implementation, deployment, and thorough testing. Additionally, staying updated with the latest iOS technologies and trends will be crucial, as you work alongside QA, UX, and product teams to iteratively develop new features.

To excel as a Senior iOS Engineer at what3words, you should have at least five years of experience in Swift development using XCode along with familiarity in prominent iOS frameworks such as UIKit, SwiftUI, and Core Location. Comprehensive end-to-end experience in mobile app development is essential, demonstrating your understanding of UX designs and engaging constructively with product teams for iterative feedback on analytics and testing.

In addition to essential skills, what3words values familiarity with CI/CD practices, experience with Objective-C, and knowledge of third-party component distribution tools like Swift Package Manager or CocoaPods. Experience with watchOS, CarPlay, RESTful web APIs, and libraries such as Firebase and MixPanel would also be a huge plus, enabling you to deliver robust mobile applications.

At what3words, we prioritize equality, diversity, and inclusion as central pillars of our workplace culture. We believe that diverse perspectives lead to a better company and superior product outcomes. We actively encourage applications from underrepresented groups, creating an environment that values different viewpoints and encourages collaboration among all staff members, including Senior iOS Engineers.

As a Senior iOS Engineer at what3words, you'll enjoy an array of competitive benefits including a flexible working policy, generous paid holiday, private health and dental insurance, and equity options. Additionally, we promote work-life balance through programs like our six-week remote working policy, team lunches, and family-friendly policies, ensuring a supportive environment for all employees.

In your response, highlight specific projects or apps you've developed using Swift. Discuss how you've utilized various iOS frameworks and your approach to problem-solving during app development. Share your passion for iOS technologies and any continuous learning efforts to stay updated.

When answering this question, outline your approach from gathering requirements to final deployment. Emphasize your methods for interpreting UX designs and how you collaborate with product teams. Mention tools and practices you've used, such as version control and testing strategies.

Discuss your experiences with unit testing and UI testing using XCTest. Emphasize your commitment to quality through continuous integration practices and the importance of seeking iterative feedback from QA and other team members to improve your code.

Provide examples of successful collaborations with designers, product managers, or QA specialists in your previous roles. Talk about how you effectively communicate technical concepts to non-technical colleagues and how you value feedback from different perspectives.

Your response should reflect your commitment to professional growth. Mention resources you follow, such as blogs, industry conferences, or forums, and discuss any active involvement in communities that focus on iOS development.

Outline a specific instance where you faced a significant bug. Discuss the investigative steps you took, your debugging techniques, and how you collaborated with your team to find a solution, underscoring your persistence and problem-solving ability.

Talk about your familiarity with continuous integration and delivery practices. Share specific tools you've used, how you set up pipelines, and how these practices have improved your development process's efficiency and quality.

Discuss your time management strategies when working under pressure. Highlight how you prioritize tasks, communicate with stakeholders, and ensure the team stays focused on high-quality output even in challenging situations.

Mention popular version control systems like Git and tools that facilitate team collaboration, such as GitHub or project management software. Discuss any effective workflows you've established to enhance team communication and track project progress.

Share what excites you about iOS development, whether it's building innovative features, exploring new frameworks, or engaging with users. Your enthusiasm for the work you do can leave a positive impression on your interviewers.