Wikidata Platform Backend Migration Specialist (Contract Position)

Wikimedia Foundation(12 days ago)

RemoteContractSenior$70,228 - $85,837Wikidata Platform Engineering

About this role

Contract Backend Migration Specialist supporting the Wikidata Platform team to migrate the Wikidata Query Service (WDQS) away from Blazegraph to a standards-compliant SPARQL 1.1 backend. The role works remotely with global teammates to help ensure continuity of access to structured Wikimedia data during the migration. Fixed-term engagement (Mar/Apr–Oct/Nov 2026), ~20 hours/week, with required overlap in UTC+1 to UTC-5.

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Required Skills

SPARQL
RDF
Query Rewriting
Query Analysis
Data Migration
Documentation
Community Support
Technical Writing

About Wikimedia Foundation

wikimediafoundation.org

Wikimedia Foundation is a nonprofit that hosts and operates Wikipedia and the wider family of Wikimedia projects, providing the technical infrastructure and organizational support that enables free, openly licensed knowledge worldwide. It supports the volunteer community, builds and maintains the software and servers, and advances policies, research, and tools to improve content quality and accessibility. Funded primarily by donations, the Foundation runs global programs and partnerships to expand access, combat misinformation, and promote inclusion across languages and regions.