Senior Software Engineer

The Wikimedia Foundation is looking for the software engineer to join the Product Safety and Integrity Team. In this role, you will work in a mostly-remote environment, where we value teamwork and close collaboration to achieve our goals. Engineers at the Wikimedia Foundation get to work on technology that truly makes a global impact — powering Wikipedia and its sister projects, which serve billions of pageviews every month across hundreds of languages. It's a rare opportunity to contribute to one of the largest knowledge-sharing platforms in the world, and to help protect free access to information for everyone, everywhere.

As a software engineer, you will work closely with the team to:

Proactively develop and maintain tools that empower communities to identify, mitigate, and prevent various forms of abuse across Wikimedia projects.
Design privacy-conscious systems that detect behavioral patterns indicative of abuse while minimizing false positives and respecting user anonymity.
Continuously adapt abuse detection and mitigation strategies in response to changes in browser privacy standards, networking protocols, and platform architecture.
Collaborate cross-functionally with product managers, designers, and researchers to create holistic, human-centered solutions that balance safety and freedom.
Write resilient, maintainable systems and high-quality code with a focus on long-term sustainability.
Implement observability to maintain high levels of quality and system stability.
Instrument and measure the impact of anti-abuse across Wikimedia projects.

Skills and experience:

4+ years related professional experience
Experience building and maintaining large-scale applications
Proficiency in PHP, Javascript and relational databases
Strong foundation in security principles
Experience in driving cross-teams objectives
Experience in driving user and product impact

Qualities that are important to us:

Collaboration, humility, and a shared commitment to Wikimedia’s vision of free knowledge for all guide everything we build
Communicate with clarity and empathy, both in synchronous and asynchronous settings Additionally, we'd love it if you have this:
Familiarity with abuse fighting or security concerns
A history of open source contributions
Familiarity with editing Wikipedia, Wikitext, Markdown, or using content management systems (e.g., MediaWiki, Drupal, WordPress)
Bachelor's, master's, or doctorate degree in computer science, management information systems, or STEM field (or equivalent certification)

Senior Software Engineer - Product Safety & Integrity

Anywhere in the world

Remote

Senior

Wikimedia Foundation