The Wikimedia Foundation is looking for a Senior Software Engineer, Android to support the App Experience and App Growth teams within the Core Experiences engineering group. It’s important to state that we are a fully remote team at a global organisation. Identifies risks early, and helps the team make pragmatic tradeoffs across quality, velocity, maintainability, and user impact.
Implementation – Improving the mobile Wikipedia product experiences that serve a general, multilingual audience on Android. Leads system design for medium-sized projects and can design and build accessible, adaptable, scalable components.
Quality, testing and observability – Consistently builds software that is easy to test, observe and debug. Instruments features that enable deeper analysis by Product Analysts.
Culture and standards – Complies with team standards in code review, technical design, testing, documentation, accessibility, observability, and decision-making – fostering transparency, empathy, and collaboration.
Qualities that are important to us:




Bachelor’s and 5-10+ years related professional experience with significant experience building Android applications
Strong professional experience and proficiency with Kotlin, XML, Jetpack Compose, and familiarity with architectural patterns in Android
Experience of Android performance optimisation techniques to ensure smooth, responsive, and high-performing applications under a variety of conditions.
Additionally, we would love it if you have:
Experience adding webview-wrapped experiences to existing native mobile apps (iOS or Android)
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 e

📌 Senior Software Engineer (España)
🏢 Wikimedia Foundation
📍 España