Reddit

Reddit is one of the largest community platforms on the internet, hosting millions of active communities that generate massive volumes of user-generated content, discussions, and real-time interactions. The company's technical challenges center on content ranking and recommendation at scale, real-time feed personalization, content moderation using ML, and advertising systems that respect community context. Since its IPO, Reddit has invested heavily in machine learning infrastructure, search improvements, and developer platform capabilities. Engineering roles span backend systems handling billions of daily page views, mobile and web clients, data engineering pipelines for analytics and ad targeting, and trust and safety tooling. Reddit's hiring reflects a company transitioning from startup-era infrastructure to enterprise-grade platform engineering.