Senior Software Engineer, Wikidata Platform

November 21

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Wikimedia Foundation

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Non-profit • Education • Media

Wikimedia Foundation is a nonprofit charitable organization dedicated to the growth, development, and distribution of free, multilingual content. It provides the essential infrastructure for free knowledge, including hosting Wikipedia, the free online encyclopedia that is created, edited, and verified by a global community of volunteers. Supported primarily through donations, Wikimedia Foundation promotes collaborative projects that aim to share knowledge reflecting human diversity and strives to protect everyone's right to access free and open knowledge.

501 - 1000 employees

Founded 2003

🤝 Non-profit

📚 Education

📱 Media

💰 $2.5M Grant on 2019-09

📋 Description

• Design, build, and maintain backend systems and APIs that power Wikidata’s query infrastructure • Improve reliability, observability, and automation of the Wikidata Query Service and data pipelines • Collaborate with SRE, data engineers, and product teams to ensure stability and scalability under growing usage • Monitor production systems, respond to operational incidents, and proactively identify and resolve bottlenecks • Support platform migrations and system upgrades (e.g., triple stores, streaming ingestion) • Contribute to deployment automation, CI/CD workflows, and service instrumentation • Participate in code reviews, design discussions, and technical planning • Document systems and share knowledge with team members and Wikimedia’s broader technical community

🎯 Requirements

• 5+ years of experience as a backend or platform engineer working on distributed systems or data platforms • Deep understanding of database and knowledge graph representation technologies and standards • Proficiency in Java, C++, or other systems languages • Experience building and operating production-grade services with SLOs • Familiarity with modern observability tools (metrics, logging, tracing) • Understanding of graph databases, search indexes, or data processing pipelines • Ability to work collaboratively across disciplines and communicate clearly across technical and non-technical audiences • A commitment to learning, resilience, and contributing to a mission-driven engineering culture.

🏖️ Benefits

• Salaries at the Wikimedia Foundation are set in a way that is competitive, equitable, and consistent with our values and culture.