Responsibilities
- Deliver medium-complexity initiatives from technical discovery through implementation, breaking work into features, estimating, managing scope, and identifying risks.
- Design and build accessible, adaptable, and scalable Android components for Wikipedia’s mobile product experiences.
- Lead system design for medium-sized projects and optimize Android application performance for smooth and responsive experiences.
- Build software that is testable, observable, and debuggable, including instrumentation for Product Analysts.
- Collaborate with product managers, designers, analysts, and native app engineers to shape pragmatic solutions.
- Prioritize technical opportunities, risks, sequencing, team capacity, and outcomes across the engagement.
- Follow standards for code review, technical design, testing, documentation, accessibility, observability, and decision-making.
- Plan work with awareness of upstream and downstream effects and contribute to knowledge sharing and team effectiveness.

Requirements




- Bachelor’s degree and 5–10+ years of related professional experience, including significant experience building Android applications.
- Strong professional experience and proficiency with Kotlin, XML, Jetpack Compose, and Android architectural patterns.
- Experience optimizing Android performance to provide smooth, responsive, and high-performing applications.
- Experience working autonomously in a self-driven, lean environment.
- Commitment to the Wikimedia Foundation’s mission and values.
- Preferred qualifications include experience with webview-wrapped experiences, cross-platform mobile applications, mobile games, data science, machine learning, AI, prompt engineering, Jupyter notebooks, Wikipedia or wikitext, MediaWiki, Drupal, WordPress, agentic coding, Wikimedia projects, and open source contributions.
- Preferred education includes a bachelor’s, master’s, or doctorate in computer science, management information systems, or a STEM field, or equi

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