Senior Backend Engineer - Recommendation Systems (Contractor)
Company: OPPO US Research Center
Location: Palo Alto
Posted on: February 17, 2026
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Job Description:
Job Description Job Description 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 collaborate on
deployments and incident response. Work cross-functionally with
MLE, product, SRE, and data teams to deliver features and
improvements. Requirements Minimum Qualifications: BS or MS in
Computer Science or a related field. 4 years building backend
systems in Java (Spring / Spring Boot). Solid knowledge of
multithreading, caching strategies, and distributed systems.
Hands-on with Redis, Elasticsearch, and Kafka. Good communication,
problem solving and teamwork skills. Preferred Qualifications:
Experience in recommender or search system backends. Experience
operating high-traffic, high-concurrency services. Benefits OPPO is
proud to be an equal opportunity workplace. We are committed to
equal employment opportunity regardless of race, color, ancestry,
religion, sex, national origin, sexual orientation, age,
citizenship, marital status, disability, gender identity or Veteran
status. We also consider qualified applicants regardless of
criminal histories, consistent with legal requirements. The US base
salary range for this contractor position is 60-120/hour. Our
salary ranges are determined by role, level, and location.
Keywords: OPPO US Research Center, Elk Grove , Senior Backend Engineer - Recommendation Systems (Contractor), IT / Software / Systems , Palo Alto, California
