Summary The Wikimedia Foundation is seeking a Software Engineer to join the team supporting the Wikidata Platform — the structured data backbone of Wikimedia projects and a key part of the general open knowledge ecosystem. You’ll help scale and sustain the Wikidata Query Service (WDQS) and related platform services that power tools, features, communities, and research efforts across Wikimedia projects and beyond.
You’ll implement high-scale, production-grade services while ensuring performance, reliability, and maintainability. Working alongside the rest of the team, you’ll contribute to shaping the future of how the world queries and interacts with structured, linked data.
Important : We are a fully remote team. Improve reliability, observability, and automation of the Wikidata Query Service and data pipelines
Integrate Wikidata Platform services with other systems and data sources across Wikimedia
Support platform migrations and system upgrades (e.g., 2+ years of experience as a backend or platform engineer working on distributed systems or data platforms




~ Solid understanding of database and/or knowledge graph representation technologies
~ Proficiency in Java, C++, or other systems languages. Familiarity with data processing technologies such as graph databases, search indexes, or data processing pipelines
~ Familiarity with streaming data systems (e.g., We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive.
We do not discriminate against any person based upon their race, traits historically associated with race, religion, color, national origin, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disabilit

📌 REMOTE SERVICE SOFTWARE ENGINEER (España)
🏢 Wikimedia Foundation
📍 España