xiang liu
@xiangliu
I build and scale high-performance Android products across AI, video, messaging, and real-time communication.
United StatesWhat I'm looking for
I've built and shipped 0-to-1 Android products at Meta across Facebook, Messenger, Instagram, Portal, and Workplace. Most recently, I architected AI You Pro for Facebook and served as Uber Tech Lead for a 40+ engineer organization spanning post-training, infrastructure, backend, and mobile.
I turn complex mobile systems into measurable product outcomes: I reduced time to responsive content from 3.5 seconds to 0.8 seconds, improved RAG knowledge retrieval success from 0.5% to 89%, and led Messenger AI iterations that increased user-generated-content sender daily active users by 180–280%.
I've also led calling, encryption, signaling, reliability, and architecture programs across Meta products, including a patent-pending multitenancy architecture for Portal calling. I work comfortably from rapid codebase onboarding and prototyping through architecture reviews, cross-functional delivery, quality instrumentation, and production rollout.
Experience
Work history, roles, and key accomplishments
Architected a 0-to-1 AI You Pro Android experience for Facebook News Feed, video posts, and video calling, reducing time to responsive content from 3.5s to 0.8s. Led a 40+ engineer organization as systems architect, designing a RAG knowledge pipeline that improved retrieval success from 0.5% to 89%.
Education
Degrees, certifications, and relevant coursework
Purdue University
Bachelor of Science, Computer and Information Technology
Grade: GPA 3.6 overall, 3.9 major
Activities and societies: Dean's List, six times
Bachelor of Science in Computer and Information Technology from Purdue University, graduating in 2018 with a GPA of 3.6 overall and 3.9 in major.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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