08/2024-now: EM at Instagram Feed Retrieval team to be responsible for all the modeling development for Instagram Feed Retrieval & Early Stage Ranking (ESR) to improve user experience and drive impact. We are actively hiring for multiple ML engineers to join our team.09/2023-08/2024: EM at Instagram support Instagram trends and recency ML team to be responsible for timely content recommendation to drive topline metrics and improve culture relevance for the app.08/2020-09/2023: EM/TL at Messenger support Messaging ML Infra team, lead the team as TL to build Messaing recommendation platform from 0 to 1, transited to EM role to support recommendation serving infra and core modeling workstreams to advance the capabilities for Messaging ML.08/2016-08/2020: Software engineer in Facebook Newsfeed infra team, working on feed storage, indexing and generic ranking services to support a wide range of head product use cases' ML needs including feed, stories, notifications, groups etc.