Senior Software Engineer - Product Safety & Integrity Remote

Social Impact Guide; San Francisco (CA); Hybrid; USD 92,267 - 144,201; Full time

Job summary

The Wikimedia Foundation is seeking a Software Engineer III to join the Product Safety & Integrity team. You will help build tools that detect abuse across Wikimedia projects, with a focus on privacy and scalable, reliable systems.

This remote-first role emphasizes cross-functional collaboration with product, design, and research, writing high-quality code, and instrumenting observability to measure impact on safety and user experience.

Qualifications

• 1+ years of relevant professional experience.
• Experience building and maintaining large-scale applications.
• Proficiency in PHP, JavaScript or similar; relational databases.

Responsibilities

• Proactively develop and maintain tools to identify, mitigate, and prevent abuse across Wikimedia projects.
• Design privacy-conscious systems that detect abusive behavior while protecting user anonymity.
• Collaborate with product managers, designers, and researchers to balance safety and freedom.
• Write resilient, maintainable code and ensure observability for system quality and stability.

Skills

PHP

JavaScript

Relational databases

Security principles

Cross-team collaboration

Open source contributions

Job description

The Wikimedia Foundation is seeking a Software Engineer III to join the Product Safety & Integrity team. You will help build tools that detect abuse across Wikimedia projects, with a focus on privacy and scalable, reliable systems.

This remote-first role emphasizes cross-functional collaboration with product, design, and research, writing high-quality code, and instrumenting observability to measure impact on safety and user experience.