Wikimedia Foundation - Senior Software Engineer, iOS (Contract)

• Bachelor's and 5-10+ years related professional experience with significant experience building iOS applications. • Strong professional experience and proficiency with Swift, SwiftUI, UIKit, and familiarity with architectural patterns in iOS. • Experience of iOS performance optimisation techniques to ensure smooth, responsive, and high-performing applications under a variety of conditions. • Experience working in a self-driven, lean environment. • Commitment to the Foundation's Mission and Values. • Experience adding webview-wrapped experiences to existing native mobile apps (iOS or Android). • Experience in maintaining cross-platform mobile applications. • Experience building mobile games or other interactive mobile experiences. • Experience with data science, machine learning, and/or AI (e.g., familiarity with prompt engineering, Jupyter notebooks experience, etc.). • Familiarity with Wikipedia / wikitext / markdown editing or content management systems (e.g., MediaWiki, Drupal, WordPress). • Experience with leveraging agentic coding to scale the work of small engineering teams. • Bachelor's, master's, or doctorate degree in computer science, management information systems, or STEM field (or equivalent certification). • Prior experience with MediaWiki or Wikimedia projects. • A history of open source contributions. • The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive. • The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA. • News from across the Wikimedia movement • Wikimedia Blog • Wikimedia 2030