Principal UX Engineer, Ads — Prototyping, Systems & AI

Reddit; United States; Remote; USD 150,000 - 230,000; Full time

Job summary

Reddit is seeking a Principal UX Engineer to bridge design and engineering within the Ads Design Research team. You will shape product direction, build robust prototypes, and establish reusable patterns that empower teams to move from idea to production.

You will mentor others, raise interaction quality, and explore AI-driven enhancements across advertiser products and design workflows.

Qualifications

• Experience at the intersection of design and engineering.
• Ability to turn complex ideas into intuitive experiences.
• Strong collaboration across senior cross‑functional partners.

Responsibilities

• Define and lead the UX engineering strategy across multiple areas of Reddit Ads.
• Build high-quality prototypes and product experiences that help teams explore ideas and test assumptions.
• Partner with senior cross‑functional leaders to shape product direction and bring clarity to opportunities.
• Create reusable tools, systems, components, and workflows that move designs into production.
• Raise the bar for interaction quality, accessibility, performance, and technical craft.
• Explore how AI can improve advertiser products and team workflows.
• Mentor other practitioners and grow UX Engineering as a capability across Reddit.

Skills

UX engineering

React

TypeScript

Cross-functional collaboration

Mentoring

Tools

React

TypeScript

Job description

Reddit is seeking a Principal UX Engineer to bridge design and engineering within the Ads Design Research team. You will shape product direction, build robust prototypes, and establish reusable patterns that empower teams to move from idea to production.

You will mentor others, raise interaction quality, and explore AI-driven enhancements across advertiser products and design workflows.