Senior Frontend Engineer, Ad Formats & Web Platform (Remote)

Resume Skip; United States; Remote; USD 191,000 - 267,000; Full time

Benefits offered by this job

Healthcare benefits

401k match

Family planning support

Mental health & coaching

Flexible vacation

Parental leave

Volunteer time off

Job summary

Reddit is seeking a senior frontend engineer with deep JavaScript, TypeScript, and React experience to strengthen advertising experiences across desktop and mobile web. You will partner with product and design to navigate ambiguous requirements and make sound product and engineering tradeoffs.

You’ll work closely with Ads and Web Platform engineers to solve complex frontend challenges while maintaining site performance, accessibility, and a dependable user experience, building maintainable

Qualifications

• 5+ years of experience building production web applications with JavaScript, TypeScript, and/or React.
• Comfort using Codex, Cursor, Claude, or comparable agentic coding tools in day-to-day software development.
• A track record of independently delivering complex frontend projects from technical design through launch and iteration.
• Sound judgment in frontend architecture, state management, component design, testing, and API integration.

Responsibilities

• Develop resilient frontend approaches to reduce ad disruptions, drawing on deep knowledge of 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 site performance, accessibility, and user experience.
• Build instrumentation and monitoring to track mitigation effectiveness, detect regressions, and guide iteration.
• Implement ad rendering, event collection, click handling, browser extensions across multiple Ad formats.
• Contribute to broader foundational improvements in web advertising reliability, performance, and measurement.
• Raise engineering quality through thoughtful technical design, testing, code reviews, documentation, and mentorship.

Skills

JavaScript

TypeScript

React

Frontend development

Performance optimization

Tools

Codex

Cursor

Claude

Job description

Reddit is seeking a senior frontend engineer with deep JavaScript, TypeScript, and React experience to strengthen advertising experiences across desktop and mobile web. You will partner with product and design to navigate ambiguous requirements and make sound product and engineering tradeoffs.

You’ll work closely with Ads and Web Platform engineers to solve complex frontend challenges while maintaining site performance, accessibility, and a dependable user experience, building maintainable