Senior Staff Software Engineer, Client Architecture

Role Overview

Senior Staff Software Engineer (Client Architecture) in Reddit’s Content Ecosystem organization, leading the architectural overhaul of post and comment composers across web and mobile. You’ll define the multi-year technical vision for how users create content on Reddit, modernize composer experiences, and help build new contribution formats—especially video creation and editing.

Responsibilities

• Architect for scale: Define and execute an org-wide client architecture strategy to support seamless video creation, editing, and uploading within shared composers.
• Accelerate product roadmap: Build and scale new contribution formats natively inside shared post/comment experiences, including formats that reduce barriers for sensitive content and enable viral, low-effort creation.
• Mentorship & org leadership: Serve as the technical anchor for Contribution engineering; translate product requirements into technical roadmaps and align teams across Web, iOS, and Android.
• Leverage modern tooling: Use AI-assisted development tools for prototyping and system design while applying rigorous judgment to validate and own final outputs; evangelize AI internally.
• Optimize contribution funnel: Engineer high-performance client infrastructure, including:
  • zero-latency rich-text rendering
  • resilient, edge-optimized media upload pipelines
  • complex state synchronization for offline/online editing

Requirements

• 10+ years professional software engineering experience, with proven track record as a Senior Staff Engineer or Principal Engineer on consumer-facing web and/or mobile client applications.
• Client architecture expertise: Deep mastery of modern web architecture (e.g., React and TypeScript), advanced state management, and strong command of native mobile paradigms (iOS/Swift, Android/Kotlin) to define unified client APIs and cross-platform standards.
• Domain expertise: Proven success resolving large-scale client performance and rendering bottlenecks; built complex interactive features (e.g., zero-latency rich-text editors, async media processing pipelines, real-time/offline state synchronization systems).