Join Reddit’s Core Systems & Libraries team to develop, operate, and scale media ingestion, processing, storage, and distribution for hundreds of millions of users. The role requires 5+ years working on large-scale distributed systems, experience with languages like Python or Go, familiarity with Kubernetes and cloud platforms (AWS/GCP), and expertise in media delivery and processing technologies.

Design, build, deliver, and operate large-scale services and platform APIs for ingestion, processing, storage, and distribution of media. Mentor junior engineers and ensure high uptime, performance, and scalability for Reddit's media experience.

Work on ingestion, processing, storage, and distribution of media at scale; design, build, and operate platform APIs and foundational services used across the company. Requires 5+ years with large-scale distributed systems and experience with Python/Go, API technologies (GraphQL, gRPC, Thrift, Protobuf), Kubernetes and cloud platforms (AWS/GCP), and media processing/delivery technologies.

Senior Engineer on the Core Systems & Libraries team responsible for designing, building, and running foundational media and non-media services and APIs at massive scale. Role emphasizes distributed systems, API design, media processing and delivery, performance and availability, mentoring junior engineers, and working with Kubernetes and cloud platforms (AWS/GCP). Requires 5+ years experience and proficiency with Python, Go, or similar.

Join Reddit's Agentic Ads Experience team to build AI-powered advertiser-facing systems (campaign assistants, creative generation, audience discovery, analytics, optimization). Role involves end-to-end product execution, architecting agentic/LLM workflows, building reliability and guardrails, defining measurement and evaluations, and cross-functional collaboration. Requires 5+ years as a software engineer and hands-on experience building generative AI applications.

Senior technical role (7+ years) on Reddit's Onboarding team owning backend architecture for signal collection, personalization pipelines, and experimentation infrastructure. Responsibilities include partnering with Product, Design, and Data Science, driving instrumentation and A/B testing, collaborating with relevance/feeds/notifications teams, and advocating for reliability, scalability, and engineering excellence.

Role focuses on designing and building scalable backend systems, APIs, infrastructure, and AI-powered developer workflows to improve developer productivity at Reddit. Requires 5+ years professional software development experience, strong Go proficiency, experience with large-scale distributed systems, APIs (GraphQL/REST/gRPC), Kubernetes/cloud, CI/CD and developer tooling; includes project leadership and mentoring responsibilities. Salary range stated for US-based applicants: $190,800–$267,100 USD/year.

Lead the design and implementation of a modular, easy-to-integrate iOS video player and collaborate with backend/CDN teams to optimize global media delivery and performance. Work cross-functionally with product and design, set engineering standards, and mentor other engineers. Requires 8+ years building user-facing native iOS applications with Swift and deep knowledge of AVFoundation, Core Media, Core Video, streaming protocols (HLS, MPEG-DASH, MP4), and CDN integration. Role is remote (United States) and listed with a base salary range of $217,000–$303,000 USD.

Reddit is hiring a Staff Product Security Engineer to lead design and delivery of secure frameworks, paved paths, and workflow-native controls (including for AI-assisted development) to prevent vulnerabilities before production. Responsibilities include building guardrails and library-level controls, driving product security reviews, and improving vulnerability discovery and remediation pipelines. Requirements include 8+ years in software engineering/product/application security (with at least 2 years at staff scope), proficiency in one or more languages (Go, Python, JS/TS), and experience with CI/CD, developer-facing platforms, and vulnerability management. Base salary range (US): $217,000–$303,900 USD/year.

Remote (United States) senior role focused on refining and owning Reddit’s data storage and caching infrastructure to support hundreds of millions of users. Requires 5+ years building internet-scale software and experience with distributed storage, languages such as Golang/Python/C++/Java, and storage technologies like Postgres, MySQL, Cassandra, Redis, and Memcached.

Mid-level generalist backend role on Reddit Ads. Responsibilities include designing and implementing advertiser-facing microservices and APIs, building distributed and real-time data systems, improving operational stability, and collaborating with product, platform, and data teams. Requires 3+ years of software development experience in languages such as Java, Scala, Go, C++, or Python.

Mid-level backend engineer role on Reddit Ads teams (e.g., Ads ML Serving, Attribution & Identity, Ads Growth, Business Manager). Work includes building microservices/APIs, distributed and real-time data systems, and infrastructure for ad products using technologies such as Go, Python, Scala, Spark, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo, and Docker. Requires 3+ years of software development experience.

Generalist mid-level backend role in Reddit's Ads organization. Responsibilities include designing and implementing ads products and microservices, collaborating with platform and data teams, improving operational stability (code quality, dashboards), and building extensible components. Technologies mentioned: Go, Python, Scala, Spark, Thrift, Baseplate, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo, Docker.

Generalist senior backend engineer role on Reddit's Ads organization responsible for building microservices and APIs, distributed and real-time data systems, ad backends and interactive ad experiences. Technologies listed include Go, Python, Scala, Spark, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo and Docker. Requires 5+ years of software development experience. US-based remote; base salary range $190,800–$267,100 USD per year.

Reddit is hiring a Senior Machine Learning Engineer to own end-to-end ML systems including model development, scalable data and model pipelines, model serving, and monitoring. The role focuses on recommendations, search/ranking, advertising systems, representation learning and LLM/Gen AI techniques, and requires production ML experience, strong software engineering skills, and familiarity with modern ML frameworks and large-scale data processing tools.