Senior UX Prototyper

The Wikimedia Foundation’s Product Design team is seeking a Senior UX Prototyper to support the Moderator Tools team. You’ll design and build high-fidelity, code-based prototypes to explore and validate workflows for the Moderator Homepage, ensuring seamless user experiences for contributors with extended permissions.

What You’ll Do

• Develop interactive, production-adjacent prototypes using live data and modern web technologies (TypeScript/JavaScript, React or Vue, HTML/CSS)
• Run iterative experiments, defining hypotheses, testing with users, and synthesizing results
• Collaborate with product and design teams to prototype intelligent workflows and user interactions
• Translate complex concepts into clear communication for both internal teams and community stakeholders
• Align prototypes with existing design systems and guidelines
• Document and hand over work to the returning designer after the contract

Who You Are

• 5+ years of experience contributing to design teams
• Strong technical skills in UX prototyping and coding
• Portfolio demonstrating creative use of code and prototyping abilities
• Comfortable moving between ideation and tactical execution
• Collaborative and enjoys engaging with a global design community
• Experience mentoring other designers is a plus
• Bachelor’s or Master’s degree, or equivalent professional experience

About Wikimedia Foundation

The Wikimedia Foundation operates Wikipedia and other free knowledge projects worldwide. Our mission is to make knowledge freely accessible to everyone. We support volunteer communities, build software for contribution and consumption, and advocate for free knowledge globally.

We are remote-first, with staff and contractors across 40+ countries. The Foundation is committed to diversity, equity, and inclusion in hiring and workplace culture.

Eligibility: U.S.-based applicants only for this posting. Non-U.S. applicants may inquire about hiring in other countries through our Employer of Record process.

‍