Backend Engineer - Search, Ads & Recommendation Mandarin Required

Backend Engineer – Search, Ads & Recommendation (Mandarin Required)

Location:
- New York City (5 Days onsite only)

Function:
- Backend Engineering / Search, Ads & Recommendation

About the Role:
Our client is a rapidly scaling global consumer internet platform with hundreds of millions of users across content, community, e-commerce, and advertising ecosystems. As the company expands internationally, it is building out its engineering capabilities in New York to support its growing global user base. This role is part of the core engineering organization responsible for the systems powering Search, Advertising, and Recommendation across the company's main platform and international product. You will work on large-scale online systems operating at tens-of-millions-of-users scale, tackling challenges in distributed systems, high concurrency, system architecture, latency, and performance optimization. The team is also integrating LLMs and multimodal AI capabilities into production, offering a unique opportunity to work at the intersection of large-scale backend engineering, Search/Recommendation/Ads, and AI-native applications.

Key Responsibilities:

Search, Ads & Recommendation Backend Engineering
- Design, build, and continuously optimize the core engine and business architecture powering Search, Advertising, and Recommendation.
- Build systems supporting both the company's main platform and international product.