Senior Software Engineer - Core Experiences
Core
Build web-first product experiences, APIs, and platform integrations that create natural handoffs between web and mobile apps to deepen reader engagement and increase retention for a global, multilingual audience.
Role type
Senior Software Engineer (Full Stack Web)
Builds
Mobile web and native app surfaces, RESTful APIs, and scalable data pipelines for Wikimedia projects.
Domain
Non-profit / Free Knowledge / Web & Mobile Platforms
Deliverable
product features
Required skills
JavaScript/TypeScript, Vue.js or React, backend languages (PHP, Python, Java, Go), RESTful API design, responsive/mobile-first web development, system design, observability, mentoring
Preferred skills
Webview integration, native mobile app development, mobile games, data science/ML/AI, MediaWiki/Wikitext, agentic coding
Technologies
Vue.js, React, PHP, Python, Java, Go, MediaWiki
Responsibilities
Lead delivery of medium complexity initiatives from discovery to deployment; Design and build accessible, scalable frontend components; Create and maintain RESTful APIs and data pipelines; Build systems that are easy to test, observe, and debug; Mentor engineers through code review and technical design; Partner with product managers and designers to shape pragmatic solutions.
Seniority
Senior, hands-on IC with mentorship responsibilities