Remote Senior iOS Engineer (Contract) — Global App Growth

Wikimedia Foundation, Inc.; San Francisco, Northern (CA, KY); Hybrid; 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 within the Core Experiences engineering group on a 3-month full-time contract. This is a fully remote role with a required daily overlap between 14:00 and 21:00 UTC.

You will deliver medium complexity initiatives, lead iOS design, ensure testability and observability, and collaborate with product, design, and analytics to ship high-quality, accessible experiences for a multilingual global audience.

Qualifications

• Bachelor's degree with 5–10+ years of iOS app development experience.
• Strong proficiency in Swift, SwiftUI, UIKit, and iOS architecture patterns.
• Experience with iOS performance optimization for diverse conditions.

Responsibilities

• Delivery of medium complexity initiatives from technical discovery through delivery.
• Lead system design for medium-sized projects and build accessible, scalable iOS components.
• Ensure code quality with testing, observability, and debugging practices.

Skills

Swift

SwiftUI

UIKit

iOS performance

Architecture patterns

Lean environment

Autonomy

Cross-functional collaboration

Education

Bachelor's degree

Job description

The Wikimedia Foundation is seeking a Senior Software Engineer, iOS to join the App Growth team within the Core Experiences engineering group on a 3-month full-time contract. This is a fully remote role with a required daily overlap between 14:00 and 21:00 UTC.

You will deliver medium complexity initiatives, lead iOS design, ensure testability and observability, and collaborate with product, design, and analytics to ship high-quality, accessible experiences for a multilingual global audience.