Remote Senior iOS Engineer — App Growth & Platform

Wikimedia Foundation; Philadelphia (Philadelphia County); Remote; USD 120,000 - 150,000; Full time

Job summary

The Wikimedia Foundation is seeking a Senior Software Engineer, iOS to join the App Growth team on a 3-month full-time contract. The role focuses on delivering iOS features for a global multilingual audience, with emphasis on design, performance, and collaboration across product and native engineering.

We operate as a remote-first organization and require availability for a 14:00–21:00 UTC work window. Bring strong Swift, SwiftUI, UIKit expertise and a track record of delivering high-quality

Qualifications

• Bachelor's degree in computer science, information systems, or STEM field, or equivalent.
• 5+ years building iOS apps with Swift / SwiftUI.
• Experience in performance optimization and responsive mobile experiences.
• Experience in lean, autonomous team environments.
• Commitment to Wikimedia Foundation values.

Responsibilities

• Delivery of medium complexity initiatives from technical discovery through delivery, breaking down into features and estimating scope.
• Lead system design for medium-sized iOS projects and build accessible, scalable components.
• Write maintainable, testable, observable code and enable product analysts with instrumentation.
• Collaborate with product managers, designers, analysts, and native engineers to balance user needs and technical constraints.
• Identify high-impact opportunities and align the team on priorities and timelines.
• Adhere to team standards in code review, design, testing, documentation, and accessibility.

Skills

iOS development

Swift

SwiftUI

UIKit

Xcode

Performance optimization

Self-driven / lean environment

Strong communication

Education

Bachelor's degree in CS/IS/STEM

Tools

Xcode

Job description

The Wikimedia Foundation is seeking a Senior Software Engineer, iOS to join the App Growth team on a 3-month full-time contract. The role focuses on delivering iOS features for a global multilingual audience, with emphasis on design, performance, and collaboration across product and native engineering.

We operate as a remote-first organization and require availability for a 14:00–21:00 UTC work window. Bring strong Swift, SwiftUI, UIKit expertise and a track record of delivering high-quality