{"username":"junfengj","header":{"name":"Junfeng Jin"},"personalInfo":{"email":""},"experience":[{"company":"Google","role":"Machine Learning Engineer","startDate":"Apr 2025","endDate":"Present","bullets":["Trained distilled models on zero-ground-truth events to fix overprediction.","Cut training delay with synthetic labels and auxiliary towers.","Built end-to-end user signal pipeline from ad request to serving."]},{"company":"ByteDance","role":"Software Engineer","startDate":"May 2024","endDate":"Apr 2025","bullets":["Launched Customer Service Agent for 20,000+ shops in 8 markets.","Built Graph RAG on Neo4j with multi-agent automation.","Designed Intention Router and memory layer for 5+ teams.","Merged 30+ microservices into a Python framework; latency -40%."]},{"company":"Alibaba Cloud","role":"Software Engineer Intern","startDate":"Jun 2023","endDate":"Aug 2023","bullets":["Built Java/gRPC microservices for a console with 80K DAU.","Shipped Spring Boot + MySQL backend; launch effort -70%.","Designed Java/GraphQL BFF layer; request efficiency +30%.","Built React/TypeScript/Redux frontend."]},{"company":"DeepLang AI","role":"Software Engineer Intern","startDate":"Nov 2022","endDate":"Mar 2023","bullets":["Scaled Django/PostgreSQL on AWS to 200K+ MAU.","Extended Amazon EMR for big data; cloud cost -38%."]}],"education":[{"school":"Carnegie Mellon University","major":"Mobile and IoT Engineering","degree":"M.S.","startDate":"Aug 2023","endDate":"Dec 2024"},{"school":"Beijing University of Posts and Telecommunications","major":"Telecommunications Engineering with Management","degree":"B.E.","startDate":"Aug 2019","endDate":"Jun 2023"},{"school":"Queen Mary University of London","major":"Telecommunications Engineering with Management (First-class)","degree":"B.E.","startDate":"Aug 2019","endDate":"Jun 2023"}],"projectsRecent":[{"title":"Raily Friends","description":"Highway-matching MVP shipped in 8 hours.","url":"https://raily.lawted.tech"}],"projectsDetailed":[{"title":"Raily Friends","type":"Personal Project","startDate":"2025","url":"https://raily.lawted.tech","bullets":["Shipped highway-matching MVP in 8 hours, concept to prod."]}],"skills":[],"contact":[],"meta":{"updatedAt":"2026-05-07T02:35:14.469Z"}}