Senior Backend Engineer - Recommendation Systems (Contractor)
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.
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.
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.
Recommended Jobs
Field Reliability Tester- San Francisco, CA
Who we are: Motive empowers the people who run physical operations with tools to make their work safer, more productive, and more profitable. For the first time ever, safety, operations and financ…
Senior QA Automation Engineer
Hi, We're Centerfield. Supercharged customer acquisition. Centerfield delivers outcome-based digital marketing solutions and personalized omnichannel experiences for the world’s leading brands. Powe…
Repack Project
Description We are hiring for a Warehouse Associate in Napa, CA Schedule: Monday-Friday Hours: 8:30am to 5:00pm Job duties: ~Process small parcel shipments and complete rework projects. ~Pickin…
Licensed Practical/Vocational Nurse (LPN) Hospice - Per Diem
You will participate and work with a team to deliver hands-on, compassionate, end of life care while supporting patients, family members, and other community caregivers as they navigate the complexit…
Technical Product Manager, Supply Chain
At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch ca…
Senior Site Reliability Engineer, Infrastructure
Who We Are Cisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network – even the ones they don’t own. Po…
NGAT Certified Tech
Job Summary: Ensures proper and timely installation of approved Energy Efficiency Measures and assists in the identification of additional energy efficiency measures available to the Customer. Respo…
Lead Product Security Engineer
About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mis…
Lead Cyber Architect
At INflow Federal, we’re not just building infrastructure—we’re shaping the future of national defense. We design and engineer secure, intelligent systems that empower mission success through the se…