Software Engineer III, Product Safety & Integrity

Summary 

The Wikimedia Foundation is looking for a software engineer to join the Product Safety and Integrity Team. 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 is 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.

In this role, you will work in a mostly-remote environment.

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:

• 1+ years related professional experience
• Experience building and maintaining large-scale applications 
• Proficiency in PHP, Javascript or similar 
• Proficiency in relational databases
• Strong foundation in security principles
• Experience in driving cross-team 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 which guides everything we build
• Communicate with clarity and empathy, both in synchronous and asynchronous settings

Additionally, we'd love it if you have:

• Familiarity with abuse fighting or security concerns
• A history of open source contributions