Senior Software Engineer, MediaWiki Content Platform Team
Listed on 2026-09-02
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Software Development
Software Engineer, Full Stack Developer, Backend Developer
Senior Software Engineer, Media Wiki Content Platform Team
Remote
SummaryThe Wikimedia Foundation is looking for a software engineer to join our team, reporting to engineering management. As a software engineer, you will be responsible for engineering software that supports our product user experiences. In this role, you will work in a fully-remote environment (with occasional travel for team, department, or organization events), where we value teamwork and a consensus-oriented approach.
You get to write open source code for collaborative experiences supporting well over half a billion pages accessed per day, and you get to do it at a place that believes we’re all more successful when everyone has a good work-life balance.
On the Content Platform team, we work to support and evolve all things wikitext, the markup language behind Wikipedia. We aim to make wikitext easier to write, faster to parse, and less error-prone for humans. We also strive to support editing and content analysis tools with structured representations. We also maintain the web services associated with content rendering and transformation.
In this role, you will work in a mostly-remote environment. To ensure there are enough opportunities to communicate, the preferred timezone for this candidate will be GMT-4 to GMT+2.
You are responsible for:- Designing and delivering improvements to Wikipedia's wikitext processing infrastructure, balancing user experience, performance, backwards compatibility, and maintainability
- Iterating on new features through collaboration with fellow engineers, product managers, designers, client teams, and community members
- Creating and maintaining internet APIs with server scripting languages
- Instrumenting components to monitor feature and quality characteristics
- Leveraging caching and persistence technologies
- 5+ years of related professional experience in software engineering
- Experience with one or more of: parser generators, interpreters, language runtimes, compilers, or bringing a language feature through a product cycle
- Demonstrated ability to own complex technical projects from problem definition through implementation and delivery, including making and communicating architectural decisions and navigating ambiguity
- Experience designing and maintaining reliable, performant software components used by other teams, products, or large numbers of users
- Strong engineering practices: you enjoy writing unit and integration tests, proactively addressing security and code review feedback, and balancing architectural tradeoffs
- Ability to work effectively across team and organizational boundaries, identify and resolve technical dependencies, and bring projects to completion with limited direction
- Experience mentoring other engineers and raising the technical quality of a team, through code reviews, design discussions, documentation, or direct mentorship
- A desire to make meaningful contributions to knowledge equity, free culture, and open access
- An emphasis on communicating clearly in both synchronous and asynchronous channels
- Self motivated with an ability to navigate through ambiguity and bring a project to completion with limited direction
- Familiarity with the HTML5 spec and DOM manipulation
- Expertise in Node.js and related technologies
- A history of open source contribution
- Bachelor's, master's, or doctorate degree in computer science, software engineering, or other STEM field (or equivalent certification)
The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely.
We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate…
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