Remote iOS Senior Engineer – App Growth & Core Experience

Wikimedia Foundation; Washington (District of Columbia); Remote; USD 56,000 - 87,000; 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. This fully remote role requires aligning your workday with 14:00–21:00 UTC for collaboration across time zones.

You will deliver medium complexity iOS initiatives, design scalable components, ensure testable and observable code, and collaborate with cross-functional partners to balance user needs and technical constraints.

Qualifications

• Bachelor's and 5-10+ years related professional experience with significant experience building iOS applications.
• Strong proficiency with Swift, SwiftUI, UIKit and familiarity with iOS architectural patterns.
• Experience with iOS performance optimization techniques for smooth, responsive apps across conditions.
• Experience working in a self-driven, lean environment.
• Commitment to the Wikimedia Foundation's Mission and Values.

Responsibilities

• Delivery of medium complexity initiatives from discovery through delivery; break down into features and manage scope.
• Lead system design for medium-sized projects and build accessible, scalable components.
• Write testable, observable code and support debugging and quality.
• Collaborate with product, design, analytics, and native app engineers to balance user needs and constraints.
• Identify high-impact technical opportunities and risks; align priorities and sequencing.

Skills

Swift

SwiftUI

UIKit

iOS architecture

Performance optimization

Autonomy

Lean environment

Cross-functional collaboration

Education

Bachelor's degree in CS or related field

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. This fully remote role requires aligning your workday with 14:00–21:00 UTC for collaboration across time zones.

You will deliver medium complexity iOS initiatives, design scalable components, ensure testable and observable code, and collaborate with cross-functional partners to balance user needs and technical constraints.