[Remote] Senior Software Engineer at Wikimedia Foundation

The Senior Software Engineer will be responsible for designing, developing, and maintaining key parts of the MediaWiki stack. They will drive technical quality and operational excellence by defining and reinforcing standards in testing, observability, and system reliability. This role involves autonomously creating proofs of concept, writing design documents, and breaking down complex projects into actionable tasks to support less experienced team members. The engineer will contribute to the adoption and advocacy of API-first development, influencing best practices in system design, SLOs/SLAs, and OpenAPI Specification. Championing product metrics by ensuring key user journeys are instrumented and monitored to guide decisions and evaluate success is also a key responsibility. The role includes leading by example in code review, decision-making, and team culture, fostering transparency, empathy, and collaboration. Improving and automating processes for identifying, tracking, and resolving production issues, and collaborating with the Product team and the community to ensure technical solutions align with user and contributor needs are also part of the duties. Additionally, the engineer will coach and mentor teammates to support continuous growth and confidence.