Job Url: https://www.remoterocketship.com/company/wikimedia-foundation/jobs/senior-software-engineer-united-states-remote

Job Description: 
Wikimedia Foundation
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About the Wikimedia Foundation

Non-Profit • Free knowledge • Open Source Culture • Internet • Technology


501 - 1000 employees

💰 $2.5M Grant on 2019-09

Senior Software Engineer
2 hours ago

🇺🇸 United States – Remote

💵 $141.4k - $175.7k / year

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

🦅 H1B Visa Sponsor

Distributed Systems

Docker

Java

Kafka

Kubernetes

Open Source

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📋 Description
• Help scale and sustain the Wikidata Query Service (WDQS) and related platform services
• 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
• Work closely with technical and product leads to shape future of how the world queries and interacts with structured, linked data; ensure performance, reliability, and maintainability

🎯 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; 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
• 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
• Working hours must overlap with UTC+1 to UTC-5 (team overlapping hours 14:00 UTC to 17:00 UTC)
• Nice to have: Experience working with knowledge graphs or RDF/SPARQL
• Nice to have: Familiarity with streaming data systems (e.g., Kafka, Flink)
• Nice to have: Comfort with CI/CD pipelines and containerization tools (e.g., Docker, Kubernetes)
• Nice to have: Experience in open source or open knowledge communities
• Nice to have: Familiarity with Wikimedia technologies, Wikidata, or MediaWiki

🏖️ Benefits
• U.S. Benefits & Perks (see link)
• Salaries at the Wikimedia Foundation are set in a way that is competitive, equitable, and consistent with our values and culture
• The anticipated annual pay range of this position for applicants based within the United States is US$141,352 to US$175,725
• Remote-first organization (fully remote team)
• Non-US employees are hired through a local third party Employer of Record (EOR)
• Accommodation for applicants with disabilities available upon request (contact recruiting@wikimedia.org or +1 (415) 839-6885)