Software Engineer

Job Description

Responsibilities

• 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
• Develop features and capabilities to ensure stability and scalability under growing usage
• Monitor production systems, respond to operational incidents 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 and design discussions,
• Document systems and share knowledge with team members and Wikimedia’s broader technical community

Skills and Experience We’re Looking For

• 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 modern observability tools (metrics, logging, tracing)
• Familiarity with data processing technologies such as 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

Nice to Have

• Experience working with knowledge graphs or RDF/SPARQL
• Familiarity with streaming data systems (e.g., Kafka, Flink)
• Comfort with CI/CD pipelines and containerization tools (e.g., Docker, Kubernetes)
• Experience in open source or open knowledge communities
• Familiarity with Wikimedia technologies, Wikidata, or MediaWiki

Are you interested in this position?
Apply by clicking on the “Apply Now” button below!
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