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Software Engineer III, Fundraising Tech

Wikimedia

Remote Remote permanent

Posted: March 19, 2026

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Quick Summary

We are looking for a highly skilled Software Engineer III to join the Wikimedia Fundraising Tech team. The ideal candidate will be responsible for developing scalable software solutions that help the Wikimedia Foundation increase accessibility worldwide.

Job Description

Summary

We are searching for an experienced full-stack software engineer to join the Wikimedia Fundraising Technology team. Each year, small donations from hundreds of thousands of individuals constitute the majority of the budget for the Wikimedia Foundation. This money is used primarily for projects, such as Wikipedia, and operational costs. We are looking for someone who wants to help Wikimedia’s non-profit fundraising efforts to become more accessible worldwide, while maintaining integrity and scalability across changing markets and over numerous engagement methods.

We'd like you to do these things:

• Support Wikimedia’s online fundraising goals worldwide by developing tools and features that empower users to create effective fundraising campaigns

• Write code to integrate with payment providers and other tools and services, both internal and third-party

• Help the team surface important patterns and trends by improving internal visibility and reporting capabilities

• Share the ongoing responsibility of maintaining the security and integrity of the existing donation infrastructure

• Provide an increased level of engineering support during high-traffic or critical campaigns

We'd like you to have these skills:

• Two years experience developing in PHP or similar web scripting language(s)

• Experience developing, deploying, and debugging in LAMP environments

• BS in Computer Science or the equivalent in relevant work experience

• Knowledge of MySQL and other relational databases

• Comfortable working with JavaScript/HTML/CSS for front-end development

• Experience integrating with third-party web APIs, and maintaining those integrations

• Highly collaborative work style

• Ability to work confidently in open source environments

And it would be even more awesome if you have experience with:

• Open-source software architecture and development

• Payments-related code

• CiviCRM or other customer relationship management software

• MediaWiki and other open source PHP-based content management systems

• Working remotely, or with a distributed team

• Developing and maintaining software with high security and accuracy requirements, at scale

About the Wikimedia Foundation

The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive.

The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.

As an equal opportunity employer, the Wikimedia Foundation values having a diverse workforce and continuously strives to maintain an inclusive and equitable workplace. We encourage people with a diverse range of backgrounds to apply. We do not discriminate against any person based upon their race, traits historically associated with race, religion, color, national origin, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, or any other legally protected characteristics.

The Wikimedia Foundation is a remote-first organization with staff members including contractors based 40+ countries*. Salaries at the Wikimedia Foundation are set in a way that is competitive, equitable, and consistent with our values and culture. The anticipated annual pay range of this position for applicants based within the United States is US$92,267 to US$118,045 with multiple individualized factors, including cost of living in the location, being the determinants of the offered pay. For applicants located outside of the US, the pay range will be adjusted to the country of hire. We neither ask for nor take into consideration the salary history of applicants. The compensation for a successful applicant will be based on their skills, experience and location.

*Please note that we are currently able to hire in the following:
US States: Arizona, California, Colorado, Connecticut, District of Columbia*, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico*, Rhode Island, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming (*US Territory or Federal District)

Countries: Brazil, Canada, Colombia, France, Germany, Ghana, India, Indonesia, Italy, Kenya*, Mexico, Morocco, Netherlands, Poland, Singapore*, South Africa, Spain, Switzerland and the United Kingdom. Our non-US employees are hired through a local third party Employer of Record (EOR) and must have current work authorization in their location. (*native citizens/permanent residents only)

We periodically review this list to streamline to ensure alignment with our hiring requirements.

All applicants can reach out to their recruiter to understand more about the specific pay range for their location during the interview process.

If you are a qualified applicant requiring assistance or an accommodation to complete any step of the application process due to a disability, you may contact us at [email protected] or +1 (415) 839-6885.

More information

U.S. Benefits & Perks

Applicant Privacy Policy

Wikimedia Foundation

What does the Wikimedia Foundation do?

What makes Wikipedia different from social media platforms?

Our Projects

Our Tech Stack

News from across the Wikimedia movement

Wikimedia Blog

Wikimedia 2030

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