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Senior Software Security Engineer


Posted on 7/3/2024

Wikimedia Foundation

Wikimedia Foundation

501-1,000 employees

Provides infrastructure for hosting Wikipedia

Social Impact

Compensation Overview

$105.3k - $163.6kAnnually


Remote in USA

IT & Security
Required Skills
  • Strong software engineering experience with a focus on security
  • Ability to work effectively in a modern, object-oriented PHP code-base
  • Experience developing client-side JavaScript
  • Experience in developing secure software or security-related product features
  • A strong interest in working with a talented security team and learning more specialist security skills
  • Patience in explaining security issues and their implications on privacy and risk to non-technical audiences
  • Sensitivity to the security challenges faced by participants in a large, international project
  • Experience using Linux at the command line for tasks related to web application development and deployment
  • Ability to maintain focus when working remotely
  • Experience working on anti-abuse mechanisms such as CAPTCHA and bot detection
  • Previous experience building security countermeasures against attacks on technologies at the web, backend, and database level
  • Experience finding and fixing security bugs and reviewing code for security gaps
  • A working knowledge of threat modeling and secure design patterns
  • Help design and build MediaWiki security capabilities
  • Review and deploy security features developed by the Foundation and community members
  • Work with other development teams to ensure that they make safe architectural and implementation choices
  • Perform security maintenance and address technical debt in security-critical components
  • Provide support for application security incidents and operations

The Wikimedia Foundation offers a dynamic and rewarding work environment where contributions make a global impact. As a leader in providing free access to knowledge through platforms like Wikipedia, the company utilizes cutting-edge open-source technology, ensuring its team is at the forefront of tech advancements. This stimulating setting not only fosters innovation but also promotes an inclusive culture where diverse ideas thrive, making it an exceptional place to work.

Company Stage

Series C

Total Funding



San Francisco, California



Growth & Insights

6 month growth


1 year growth


2 year growth