Senior Backend Engineer - Recommendation Systems (Contractor) at OPPO US Research Center

Join OPPO US Research Center’s core team to develop and optimize backend services for high-traffic products (App Store, Global Search, Game Center). You’ll build scalable, reliable systems that serve millions of daily users. ### Key Responsibilities Design and implement backend services for recommendation and search with a focus on low latency and high availability. Implement multi-level caching and optimize data access patterns. Build, monitor and tune data pipelines and indices using Redis, Elasticsearch, and Kafka. Develop production-quality Java services using Spring / Spring Boot and…