Senior Software Engineer, Consumer Engineering

Reddit is a community of communities built around shared interests, passion, and trust. The Senior Software Engineer will build and scale consumer-facing backend products, partnering cross-functionally to design, develop, experiment with, and operate reliable distributed systems and APIs.

Responsibilities:

• Cross-Functional Product Architecture: Partner closely with Product Management, Product Design, Data Science, and Client Engineers (iOS/Android/Web) to translate business and user needs into reliable, low-latency technical solutions
• End-to-End Delivery: Own the full software lifecycle for major product initiatives from technical design docs and API contracts to development, testing, rollout, and observability
• Metrics & Experimentation-Led Engineering: Design, build, and evaluate A/B experiments. Work with tools like BigQuery, HEX, or Firebase to analyze user behavior, conversion funnels, and retention loops to make data-backed engineering decisions
• API & System Performance: Build and maintain scalable APIs (GraphQL, REST, gRPC) and distributed backend services optimized for client consumption and consumer UI performance
• Technical Rigor & Modern Tooling: Establish engineering best practices, improve developer workflows, mentor teammates, and use modern, AI-integrated tools to ship high-quality products efficiently

Requirements:

• An advocate for the user with an intuitive feel for product usability, interaction design, social dynamics, and user growth loops. You care deeply about why a feature is being built and its impact on the end user
• Comfortable working alongside Data Scientists and PMs to design experiments, establish core performance metrics, and iterate quickly based on real-time feedback
• 5+ years of hands-on backend development experience building and operating large-scale distributed serving systems in high-concurrency environments
• Self-directed, innovative, and comfortable navigating ambiguity in fast-paced product environments where balancing velocity with system reliability is essential
• Outstanding communication skills with a track record of driving cross-functional alignment in fully remote or hybrid team environments
• Proficiency in modern backend languages such as Go or Python (or Java, Kotlin, Rust, C++)
• Expertise in designing and maintaining scalable, maintainable APIs using GraphQL, REST, or gRPC for native mobile and web applications
• Experience with high-throughput caching layers and distributed datastores (e.g., Redis, Cassandra, PostgreSQL)
• Experience or interest in using AI-assisted engineering tools to accelerate development workflows