Senior Frontend Engineer - Ads Formats Platform

Reddit, Inc.; United States; Remote; USD 191,000 - 267,000; Full time

Benefits offered by this job

Comprehensive Healthcare Benefits and

Income Replacement Programs

401k Match

Family Planning Support

Mental Health & Coaching Benefits

Flexible Vacation & Reddit Global Days

Paid Volunteer time off

Job summary

Reddit, Inc. is seeking a Senior Frontend Engineer for the Ad Formats team to advance ad experiences across platforms and formats.

You will design scalable frontend architectures, implement polished UIs, and collaborate with cross-functional partners to improve performance, accessibility, and measurement. You will own instrumentation, run controlled experiments, review code, and mentor teammates while shipping reliable frontend features that align with product goals and privacy standards.

Qualifications

• Comfort using Codex, Cursor, Claude, or comparable agentic coding tools in day-to-day software development.
• Track record delivering complex frontend projects from design to launch and iteration.
• Sound judgment in frontend architecture, state management, component design, testing, and API integration.
• Experience building polished user interfaces with attention to usability, performance, and accessibility.
• Ability to work through ambiguous product and technical problems.
• Strong communication and collaboration across engineering, product, design, and data disciplines.
• Experience using instrumentation, experimentation, or product metrics to improve user experiences.
• Habit of improving engineering quality through code reviews, documentation, and mentorship.
• Experience working with various ad formats (video ads, display ads, etc).

Responsibilities

• 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 site performance and accessibility.
• Build instrumentation to track mitigation effectiveness, detect regressions, and guide iteration.
• Contribute to foundational improvements in web advertising reliability, performance, and measurement.
• Raise engineering quality through thoughtful design, testing, code reviews, documentation, and mentorship.

Skills

Codex/Cursor/Claude tools

Frontend project delivery

Frontend architecture

UI design and usability

Performance and accessibility

Cross-functional collaboration

Instrumentation and metrics

Code reviews and mentorship

Ad formats experience

Job description

Reddit, Inc. is seeking a Senior Frontend Engineer for the Ad Formats team to advance ad experiences across platforms and formats.

You will design scalable frontend architectures, implement polished UIs, and collaborate with cross-functional partners to improve performance, accessibility, and measurement. You will own instrumentation, run controlled experiments, review code, and mentor teammates while shipping reliable frontend features that align with product goals and privacy standards.