Yin Chen, Liao (廖尹禎)

[email protected]

Experience 


Senior Data/ML Engineer, MobLab Inc., 2022 July - Present

  • Algorithm Design: game data analysis, user clustering
  • RESTful API development: extensive experience on FastAPI, along with asyncio.
  • Large-Language-Model(LLM): Hands-on experiences on building GPT-powered machine learning/AI system, which is capable of handling hundreds of note processing within 2 mins.
  • Prompts Engineering, Evaluation and Optimization.
  • Streaming pipeline with Apache Kafka.

Principal EngineerCoretronic Corporation., November 2020 - July 2022

  • Robotic development with Python and  C/C++
  • Deep-learning based algorithm for robotic grasping
  • Robotic Hand-Eye calibration, reach less than 5 mm projection error on Realsense L515 LiDAR camera with ordinary tripod
  • Augmented Reality: design and implement algorithm for camera pose estimation, significantly improve the tracking performance by boosting the detection distance from less than 30cm to over 1m with frames per second rate over 65
  • SLAM system development
  • Large scale business strategic analysis with Spark

Senior Software Developer, Wuduker Inc., January 2020 - October 2020

  • iSchedule, a preference aware scheduling system. Responsible for designing RESTful API, database schema and core scheduling solver
  • Anomaly detection system with Deep Metric Learning
  • Develop deep learning model with PyTroch and PyTorch-Lightning
  • Consulting service. Including Spark pipeline optimization, deep learning model development and general Python/C++ development

Machine Learning Engineer, Pinkoi Inc., December 2017 - December 2019

  • Recommendation System, including item-based/store-based recommendation, keyword suggestion, making significant improvement on recommendation quality and coverage.
  • Machine Learning Algorithm Design
  • Data Pipeline, including on-site advertising and internal BI reporting with Apache Airflow.
  • Design and maintain automatic testing scheme
  • Database optimization for accelerating internal BI reporting system by 50% (query time drops from approximately 2 mins to less than 1 min on average)
  • https://www.pinkoi.com/

R&D Engineer, Speed 3D Inc., July 2015 - June 2017

  • SDK Development (iOS, Android with Unity 3D)
  • Backend Server Maintenance
  • Algorithm Design
  • http://www.spe3d.co

Co-Founder, 木刻思,  June 2014 - June 2015

Research Assistant, National Taiwan University, June 2012 - June 2014

  • Econometric Model Simulation

Projects (Selected)


Talks


Skill Sets


Python

Scientific computing and data visualization, including Tensorflow, PyTorch, numpy, scipy and matplotlib. Experience with RESTful API development using Flask and FastAPI.


C++

Familiar with OpenCV basic data structures such as Mat in addition to basic and advanced image processing API. 
Building external library for python with pybind11



PySpark / Spark

Proficiency in Spark SQL for building efficient data processing pipeline. Experience in both integrating Python ML libraries with PySpark such as distributed hyperparameters search.


Apache Airflow

Familiar with the API for managing complex tasks scheduling and pipelines management

GCP DataProc, BigQuery

Working knowledge on GCP DataProc and BigQuery for building/tuning Spark Cluster and building large scale data warehouse with BigQuery


Tensorflow / PyTorch

Deep understanding of Tensorflow / PyTorch frameworks. Proficiency in designing tools and models based on these frameworks.

Apache Kafka

Proficiency in building streaming processing pipelines with Apache Kafka.



Education

M.S, Economics, National Taiwan University,  2011

Graduated in the top 5% of the class

B.S, Mathematics, National Taiwan University, 2009