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 integral 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.
This role combines backend engineering and operations ownership. 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. Help 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
Integrate Wikidata Platform services with other systems and data sources across Wikimedia




Contribute to deployment automation, CI/CD workflows, and service instrumentation
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. Ability to set up, scale, and investigate systems is more important than expertise in a particular language.
~ Experience building and operating production-grade services with SLOs - good appreciation of scalability, performance, reliability and other non-functionals
~ Familiarity with data processing technologies such as graph databases, search indexes, or data processing pipelines
~ Familiarity with streaming data systems (e.g., Kafka, Flink)
Docker, Kubernetes)
The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projec

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