Senior Frontend Engineer, Ads Formats
Reddit · Remote - United States
About this role
**Senior Frontend Engineer, Ads Formats** ## Team Description The Ad Formats team builds and evolves Reddit’s ad experiences across all platforms and format types (image, video, carousel, shopping, etc.). The team defines how ads behave across placements like feed, conversation, and search—ensuring each format works in the right surfaces and contexts. You’ll support the end-to-end ad experience, including media rendering, click behavior (including special click variants like lead gen), and UI details that keep promoted content feeling native to Reddit while optimizing for advertiser goals. Within this area, the **Ad Formats Foundation** team owns the common infrastructure behind all ad formats, with a mission to improve developer efficiency, system reliability, and long-term scalability across the stack. ## Role Description We’re looking for a **senior frontend engineer** with deep **JavaScript, TypeScript, and browser platform** expertise to strengthen Reddit’s advertising experiences across **desktop and mobile web**. You’ll partner with product and design to work through ambiguous requirements and make sound product/engineering tradeoffs. ## Responsibilities - Develop resilient frontend approaches to reduce ad disruptions using JavaScript, TypeScript, HTML, CSS, the DOM, and browser networking - Partner with Ads and Web Platform teams to integrate solutions into shared rendering infrastructure, frontend architecture, and build systems - Design controlled experiments and phased rollouts to measure effectiveness while protecting performance, accessibility, and UX - Build instrumentation and monitoring to track mitigation effectiveness, detect regressions, and guide iteration - Implement ad rendering, event collection, click handling, and browser extensions across multiple ad formats - Contribute to foundational improvements in web advertising reliability, performance, and measurement - Raise engineering quality through technical design, testing, code reviews, documentation, and mentorship ## Required Qualifications - **5+ years** building production web applications with **JavaScript, TypeScript, and/or React** - Comfort using **agentic coding tools** (e.g., Codex, Cursor, Claude, or comparable) day-to-day - Track record of independently delivering complex frontend projects from technical design through launch and iteration - Strong judgment in frontend architecture, state management, component design, testing, and API integration - Experience building polished UIs with attention to usability, performance, accessibility, and maintainability - Ability to work effectively through ambiguous product and technical problems - Strong communication and collaboration across engineering, product, design, and data - Experience using instrumentation, experimentation, or product metrics to improve user experiences - Habit of improving engineering quality via code reviews, documentation, and technical mentorship ## Bonus Points - Experience working with various ad formats (e.g., video ads, display ads) ## Technologies Used - JavaScript, TypeScript, React - Modern frontend testing, experimentation, and observability tools ## Benefits - Comprehensive healthcare benefits and income replacement programs - 401k match - Family planning support - Gender-affirming care - Mental health & coaching benefits - Flexible vacation and Reddit Global Days Off - Generous paid parental leave - Paid volunteer time off ## Location - **#li-remote** ## Pay Tra
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