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Build and operate backend and platform services for the Wikidata Query Service and related data pipelines. Improve reliability, scalability, observability, and automation; respond to incidents; support migrations and deployments; integrate with other Wikimedia systems; participate in design, code review, documentation, and knowledge sharing.

Design, build, and maintain backend systems and APIs for the Wikidata Query Service. Improve reliability, observability, automation, and scalability; monitor production, respond to incidents, support migrations, and collaborate across SRE, data, and product teams.

The Senior Site Reliability Engineer is responsible for maintaining Wikimedia's infrastructure, improving reliability, automating processes, and collaborating with teams. The role involves troubleshooting, managing deployments, and leading incident responses while working remotely.

Serve as a strategic HR advisor delivering employee relations, talent management, organization design, performance management, and change leadership for global teams. Coach managers, mediate complex cases, conduct talent reviews and succession planning, and partner with HR Centers of Excellence to design and implement people solutions that improve engagement, retention, and productivity.

Lead and execute multi-channel donor acquisition, retention, upgrade, and reactivation initiatives. Design donor journeys, manage segmentation and campaign execution across email, direct mail, SMS and paid channels, track KPIs, forecast and report on ROI, and collaborate with product, data, and agency partners to grow donor lifetime value and engagement.

The Senior Software Engineer will design and maintain MediaWiki's backend components, ensuring quality and operational excellence across the platform while mentoring team members and aligning with WMF strategies.

Outbound-focused SDR responsible for prospecting enterprise accounts, booking qualified meetings, qualifying using MEDDIC, and handing leads to AEs. Run multi-touch outreach across email, phone, LinkedIn, and video, manage pipelines and automation in HubSpot, collaborate with product and solutions engineering, and feed market intelligence into GTM playbooks.

Build and maintain Wikimedia editing features (primarily VisualEditor). Fix bugs, implement new functionality, collaborate with cross-functional teams, write multilingual accessible performant code in JavaScript and PHP, instrument components, and work within the MediaWiki API ecosystem. Contribute tests and use version control in a distributed, open-source environment.

The Senior Data Scientist will integrate data from various sources, analyze web performance, and provide insights for strategic decision-making. Responsibilities include developing automated systems for content coverage, tracking metrics, and designing experiments to assess new initiatives' impact.

As a Senior Site Reliability Engineer, you will manage and improve Wikimedia's infrastructure, handle operational tasks, automate processes, and provide mentorship while participating in a 24/7 on-call rotation.