Wikimedia Foundation - United States, IT - Software Development

Join the Wikimedia Foundation as an Email Developer (Fundraising) in San Francisco. You'll code multilingual HTML emails for global campaigns, leveraging A/B testing to optimize donor engagement across 15 million contacts. Requires 1+ years of HTML email experience, CSS proficiency, and strong QA...

Join the Wikimedia Foundation as a Senior Software Engineer on the MediaWiki Platform team. You will enhance the core open-source platform powering Wikipedia, focusing on performance, scalability, and reliability. We seek backend engineering expertise, strong system design skills, and experience ...

Senior UX Researcher (3-month contract) needed to lead mixed-method research for Wikipedia. You will drive end-to-end quantitative and qualitative studies, delivering actionable insights to improve global user experiences. Requires 5+ years of UX research expertise, statistical analysis, and coll...

Senior Product Manager, Mobile Apps – 6-month contract with Wikimedia. Lead product development for Wikipedia’s Android and iOS apps, serving 1B+ monthly users. Requires 5+ years PM experience, 3+ years in mobile-first environments, and a track record of launching features in large-scale consumer...

Join the Wikimedia Foundation as a Senior Fundraising Data & Analytics Analyst. In this remote US contractor role, you'll analyze global campaigns and build predictive models to optimize donor strategy. Leverage your expertise in SQL, Python, and BI tools to deliver insights that support Wikipedi...

Join the Wikimedia Foundation as a Senior Site Reliability Engineer. You will ensure the reliability and scalability of Wikipedia's global infrastructure using Python, Puppet, and Linux. This remote US role involves automation, on-call rotation, and collaborating with product teams to support our...

Lead the Product Analytics team at Wikimedia Foundation, guiding data-driven strategies for global knowledge sharing. Manage a team of data scientists, partnering with product and engineering to deliver actionable insights. Requires expertise in experimental design, large-scale data tools, and pe...

Join the Wikimedia Foundation as a Senior Software Engineer (Privacy) in San Francisco. Design and implement critical security features to protect Wikipedia's users and platform resilience. This hands-on role requires 5+ years of experience, expertise in PHP/JavaScript, and a passion for secure s...