Chen Tong

About Chen Tong

Software Engineer with more than two years\' experience of ELT/BI data system.• Hands-on practice of handling billions of records on various cloud computing system such as Apache Spark.• Proficient in Python, Java, Apache Airflow, Kubenetes, PostgreSQL, MongoDB.• Strong presentation and communication skills, excellent critical thinking and problem-solving skills, attention to detail.

Experience

1. Senior Software Development Engineer

   Amazon

   Jul 2022 — Present · Seattle, WA, US

   2026 — Leading large-scale LLM reinforcement learning and next-generation training systems to improve alignment quality, training stability, and convergence efficiency.2025 — Driving major improvements in LLM training and evaluation efficiency across multi-hundred-GPU clusters, significantly reducing training cost and cycle time.2024 — Architected and scaled production LLM and agentic runtime services operating on thousands of GPUs to support low-latency, highly reliable AI experiences.2023 — Built model-driven personalization systems delivering adaptive, context-aware user experiences at global scale.2022 — Designed ML-powered transcription auto-correction pipelines that materially improved speech recognition accuracy and downstream user comprehension.

Education

• New York University

  Master’s Degree, Computer Science

  2016 — 2018

Skills

• Mysql
• Git
• Microsoft Excel
• Data Mining
• Algorithms
• Teamwork
• Deep Learning
• Amazon Web Services (Aws)
• Matlab
• Python
• Scala
• Hadoop
• C/C++
• Computer Science
• Statistical Modeling
• Mapreduce
• R
• Html
• Apache Spark
• Mongodb
• Hbase
• Machine Learning
• Statistics
• Mathematics
• Data Analysis
• C++
• Financial Analysis
• Java
• Big Data
• Sql
• C
• Hive/Pig