Principal UX Engineer (Ads)

Location: Remote - United States

Salary: $245,800–$344,100 USD base salary, plus potential equity and commission depending on the position offered.

Company

Reddit is a large online community platform with more than 100,000 active communities and approximately 130 million daily active unique visitors; the Ads Design & Research team develops advertising experiences and supporting systems.

What you will do

• Define and lead UX Engineering strategy across multiple Reddit Ads areas.
• Build high-quality functional prototypes and product experiences to explore ideas, test assumptions, and support product decisions.
• Partner with Design, Research, Product, Engineering, and Data Science leaders to shape product direction and resolve complex, ambiguous opportunities.
• Create reusable tools, systems, components, and workflows that connect design and research with production.
• Improve interaction quality, accessibility, performance, and technical craft across the Ads experience.
• Explore AI applications for advertiser products and design and development workflows while mentoring UX Engineering practitioners.

Requirements

• Deep experience combining product design and engineering while building sophisticated interactive products.
• Strong hands-on expertise with modern frontend technologies, including React and TypeScript.
• Excellent product and interaction judgment, with the ability to turn complex ideas into intuitive experiences.
• Experience influencing product direction across multiple teams or product areas.
• Experience creating reusable patterns, platforms, or tools that help teams work more efficiently.
• Strong systems thinking, communication, collaboration, and decision-making skills in ambiguous environments.

Nice to have

• Experience in advertising or complex products such as marketplaces, enterprise tools, analytics, commerce, developer platforms, AI-powered experiences, or other multi-sided ecosystems.

Culture & Benefits

• Comprehensive healthcare and income replacement programs.
• 401(k) with employer match and benefits for U.S.-based employees.
• Flexible vacation, paid volunteer time off, and generous paid parental leave.
• Family planning support, gender-affirming care, and mental health and coaching benefits.
• Global benefits supporting workspace, professional development, and caregiving.
• Interviews may be recorded, transcribed, and summarized by AI, with an option to opt out before scheduled interviews.