Software Engineering • Senior

Who you are

You are a seasoned software engineer with a strong background in building security features for large-scale systems — you understand the critical importance of testing and documentation in developing secure web applications. With a passion for the Wikimedia Foundation's mission, you thrive in a transparent environment where your work impacts thousands of users daily.

You have experience working on security challenges, including modern authentication technologies and platform abuse detection — your expertise allows you to plan and implement improvements to security architecture effectively. You are comfortable collaborating with other engineering teams to ensure safe and compliant architectural choices, leading by example in code reviews and fostering a positive team culture.

What you'll do

In this role, you will help design, develop, and deliver security features with a focus on safety and security — your hands-on engineering skills will be crucial as you work alongside a team of engineers and product managers. You will be responsible for ensuring that the MediaWiki platform remains resilient against attacks while meeting stringent performance standards.

You will tackle emerging security threats and contribute to the overall integrity of the Wikimedia projects — your work will directly impact the safety and reassurance of users interacting with Wikipedia and other platforms. You will lead initiatives to enhance security measures and collaborate with cross-functional teams to implement best practices in security engineering.

What we offer

Wikimedia offers a unique opportunity to work on one of the top websites globally, contributing to a mission-driven organization that values transparency and community engagement. You will be part of a team that is dedicated to protecting user data and enhancing the security of widely used platforms. We encourage you to apply even if your experience doesn't match every requirement, as we value diverse perspectives and backgrounds.