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National Taiwan University
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人工智慧工程師 @玉山銀行智能金融處 (Intelligent Finance Dept., E-SUN Bank )
2020 ~ Present
Machine Learning Researcher / Engineer
Within one month
Research
Music Information Retrieval
Natural Language Processing
Employed
Full-time / Interested in working remotely
4-6 years
National Taiwan University
Graduate Institute of Communication Engineering
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Engineer II @SiFive
2022 ~ Present
Within one month
Employed
Open to opportunities
Full-time / Interested in working remotely
4-6 years
National Taiwan University
Mechanical Engineering
Avatar of Jingping Wang.
Avatar of Jingping Wang.
Consultant @TATA Consultancy Service (TCS)
2023 ~ Present
Senior Software Engineer
Within one month
— Jingping Wang 王景平 More than 15+ years of experience in software development. Projects participated include from large scale insurance/banking web applications to mobile applications. In recent years, I have been engaged in software defined networking and 4G/5G user data plane networking. Taipei City, Taiwan Phone:E-Mail: jingping.w@tcs.com EXPERIENCE Full Stack Engineer • TATA Consultancy Services (TCS) JanPresent TaiShin Bank Richart App Frontend / 台新 Richart 數位銀行 TaiShin Bank Richart App Backend / 台新 Richart 數位銀行 TaiShin
Java
JSP/Servlet
JavaScript
Employed
Full-time / Interested in working remotely
More than 15 years
National Taiwan University
Atmospheric Sciences
Avatar of 林軒立.
Avatar of 林軒立.
Project leader engineer(主任工程師) @TSMC
2014 ~ Present
Optical engineer, Semiconductor engineer
Within three months
keep high-quality, speed-up data processing & maintenance E-beam writer of data re-structure : Benefit of 10%~25% mask exposure cost by software solution New Re-tape-out Flow of double-patterning technique (DPT) & OPC consistency : minimum process variation & quality insurance Benefit of 30%/year cost in mask data processing Education SepJun 2013 National Taiwan University master's degree in Photonics and optoelectronic SepJun 2011 National Cheng Kung University bachelor's degree in Photonics and optoelectronic Skills Language Data Science & Data analysis OPC , EDA related tools Python , C++ , Perl Mask data process Chinese - Native English - Professional
OPC
Data Science
Python
Employed
Full-time / Interested in working remotely
6-10 years
National Taiwan University
Photonics and optoelectronic
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Optimization Algorithm Engineer @Taiwan Semiconductor Manufacturing 台灣積體電路製造股份有限公司
2020 ~ Present
Algorithm Designer
Within one year
C++
Combinatorial Optimization
Operation Research
Employed
Full-time / Interested in working remotely
4-6 years
National Taiwan University
Industrial Engineering

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Logo of 玉山銀行智能金融處 (Intelligent Finance Dept., E-SUN Bank ).
玉山銀行智能金融處 (Intelligent Finance Dept., E-SUN Bank )
2020 ~ Present
Taipei, Taiwan
Professional Background
Current status
Employed
Job Search Progress
Professions
Data Engineer, Machine Learning Engineer
Fields of Employment
Software, Banking
Work experience
1-2 years work experience (4-6 years relevant)
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I've had experience in managing 1-5 people
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Research
Music Information Retrieval
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sklearn
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Pytorch Lightning
PostgreSQL
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Intermediate
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Positions
Machine Learning Researcher / Engineer
Job types
Full-time
Locations
台灣台北市, 台灣新竹市
Remote
Interested in working remotely
Freelance
Yes, I freelance in my spare time
Educations
School
National Taiwan University
Major
Graduate Institute of Communication Engineering
Print
Zx6amgvjmkxenvsveonw

Jeffrey Lin (林奕勳)

[email protected] TW, Taipei

CAREER SUMMARY 


  • 6+ years of deep learning research and development experience, with a strong ability in prototyping, evaluation, and deployment of models, in both academical and industrial environment.
  • 2+ years of financial AI development experience, specialized in the design of python API, SDK, and framework for optimizing the deployment flow of data science, ETL, and machine learning pipelines. 
  • 1+ year of participation in the technology management assistant bootcamp, with real-experience on business user support, gaining first-hand insight on financial and corporative AI usage via cross-department collaboration. 
  • Having excellent code-quality standard, efficiency-oriented thinking, and perseverance in face of challenging problems; Continue absorbing “technical-nutrients” from the development of open-source AI community.

PROJECT

Next-Generation ETL Framework for Data Science Team

2022/7-2022/12

  • Goal: 
    1. Design a lightweight ETL python framework enabling data scientists to seamlessly deploy their pandas/SQL processes to airflow in a maintainable format.
    2. Reduce the maintenance and optimization cost of AI projects with integration of customizable data validation, metadata registration, and time/memory-profiling tools. 
    3. Ensure flexibility and extensibility in pandas-like packages (such as CuDF, Polars, PySpark, etc) for future parallelizability, targeting 1000X speedup.
  • Responsibility: Coordinate the design and development of ETL framework components. Give instruction to ETL research intern and provide code review and design guidance for the project participants.
  • Accomplishment: Have wrapped the framework into a workable python package and successfully imported it into two production projects, with ETL business logic automatically rendered on the Airflow UI in an easily traceable way.

Enhance and Maintain House Price and Mortgage Loan API

2022/2-2022/7

  • Responsibility: API Service maintenance, code refactoring, and model performance enhancement for the house-price/mortgage loan automatic appraisal system. 
  • Accomplishment: 
    1. Encrypted API re-routing: 
      • Re-route the internal mortgage API service as an encrypted API service for external client. Understand and implement the RSA/AES double encryption protocol under spec-ambiguous situation by investigating client-side PHP code. 
    2. Code refactor and migration: 
      • Reduce the cognitive complexity of service code from 1000-line-single-file situation by thoroughly understand the business logic and refactoring it into chain-of-command design pattern. 
      •  Design common module with logging mechanism to reduce future maintenance cost. 
      •  Draw and carry out the code migration plan without compromising the 24/7-criteria. 
    3. Re-design of house appraisal model for interpretability:  
      • Coordinate with research institution and business unit to build a business interpretable deep learning model. 
      • Re-design the loss function with regularization term to meet the legal requirements. 
      • Reducing the model inference time by adopting Google’s state-of-the-art nearest neighbor algorithm for referential house searching.  

Scalable ETL Pipeline for Credit Loan Marketing Data

2021/8-2022/1

  • Responsibility: 
    1. Orchestrate the cross-department coordination of the development process.
    2. Design a low-code python-SQL interface for the data-analyst of business unit and provide development and CICD guidance.
    3. Ensure business-logic-extensibility in considerations of future marketing campaign. 
    4. Ensure timely delivery of 7 million customer campaign data under 1day computation criteria.
  • Accomplishment: 
    1. Have helped the data-analyst of business unit successfully incorporate new campaign business logic into the production pipeline.
    2. A comprehensive tutorial to the development interface and CICD toolkits, enabling smooth new feature extension with zero-guidance.
    3. Significantly speedup the pipeline from 5d to 8h via map-reduce parallelization with multiple Airflow worker nodes. 

PyTorch development framework for Industry-Academy Cooperation

2021/4-2022/8

  • Goal: Develop Pytorch model development framework to reduce the academy-to-company code migration cost.
  • Features:
    1. Support training, validation, testing, weight/performance inspection, and  check-pointing of models with different architecture.
    2. Fixed experimentation flow for all models with formatted running script and folder structure, to enhance code readability and reproducibility.
    3. Support lazy evaluation and visualization of data pre-processing, avoid re-generation of data in experimentation scenario.
    4. Supporting parallel model hyper-parameter tuning via Ray (a general python parallelization framework).
  • Tools: Pytorch-lightning, Ray, TensorBoard, pyflow-viz

2D Indoor Positioning System through Android App

2014/1-2015/1 

Instructor: Professor Ren-Song Tsay
  • Survey on the state-of-the-art indoor positioning technologies and write a project proposal. Investigate the relationship between distance and the amplitude of the Bluetooth signal through experiment. Develop an android app that fuses the signals of Bluetooth and Geo sensor for position estimation. 
  • Score: A+ 

RESEARCH

Develop techniques applicable to the music industry and design experiments for proof-of-concept

2015/9-2020/1  

Instructor: Professor Homer H. Chen  

  • Developed a context-based tag propagation method to reduce the training noise and successfully improved a deep music auto-tagging model (SampleCNN) by 25.8% in MAP
  • Enhance the robustness of the tag propagation method and successfully extended the improvement to two other neural networks (CRNN and 2D-CNN) with the increase of improvement reaches 6.5%, 4.9%, and 5.5% (for SampleCNN, CRNN, and 2D-CNN, respectively)
  • Responsibility: Build up the experiment acceleration (via GPU) environment on a Linux-based server; Design the model evaluation and training strategy with TensorFlow. 
  • Conduct error analysis to understand the problem in the training data using Matplotlib and Seaborn. Tune the hyper-parameters during model development. Accelerate the evaluation and data visualization process using ray, a parallel processing package. 

Research proposal in music for lab funding from the Ministry of Science and Technology (MOST)

2015/9-2017/10 

EDUCATION 

M.S. in Graduate Institute of Communication Engineering, National Taiwan University 

2015/9 ~ 2020/1 

  • Multimedia Signal Processing (A) 
  • Special Topics on Internet of Things (A): Develop an IOT product and demonstrate its functionality. 
  • Computational Methods and Tools for Data Science (A): Familiarize myself with basic EDA (exploratory data analysis) techniques including PCA and t-SNE.

B.S. in Electrical Engineering Department, National Tsing Hua University

2011/9 ~ 2015/6

  • Programming Classes: Logic Design (A+) / Logic Design Lab (A+) / Embedding System Lab (A+)  / Computer Programming Design (A+)
  • Math Classes: Calculus I&II (A+/A+) Linear Algebra (A+) / Numerical Analysis (A) 

SKILLS


    • Programming Skills: Design Patterns、ETL、Image Building、Machine Learning、Parallel Acceleration、Python SDK Design、Refactoring 
    • Development Environment: Linux, Docker, Oracle-Cloud, Visual Studio Code 
    • Computer Languages: Python、C++、SQL、JAVA 
    • Tools for Machine Learning and Data Science: Pytorch、Pytorch-Lightning、CuDF (GPU-accelerating dataframe)、Pandas、Networkx、LightGBM、DeepGraphLibrary 
    • Tools for Model Serving, Deployment, and Data Pipeline: Airflow、FastAPI、 k8S、PostgresDB、RedisGraph、Neo4j、Ray For Collaboration: Github、Azure DevOps 

Resume
Profile
Zx6amgvjmkxenvsveonw

Jeffrey Lin (林奕勳)

[email protected] TW, Taipei

CAREER SUMMARY 


  • 6+ years of deep learning research and development experience, with a strong ability in prototyping, evaluation, and deployment of models, in both academical and industrial environment.
  • 2+ years of financial AI development experience, specialized in the design of python API, SDK, and framework for optimizing the deployment flow of data science, ETL, and machine learning pipelines. 
  • 1+ year of participation in the technology management assistant bootcamp, with real-experience on business user support, gaining first-hand insight on financial and corporative AI usage via cross-department collaboration. 
  • Having excellent code-quality standard, efficiency-oriented thinking, and perseverance in face of challenging problems; Continue absorbing “technical-nutrients” from the development of open-source AI community.

PROJECT

Next-Generation ETL Framework for Data Science Team

2022/7-2022/12

  • Goal: 
    1. Design a lightweight ETL python framework enabling data scientists to seamlessly deploy their pandas/SQL processes to airflow in a maintainable format.
    2. Reduce the maintenance and optimization cost of AI projects with integration of customizable data validation, metadata registration, and time/memory-profiling tools. 
    3. Ensure flexibility and extensibility in pandas-like packages (such as CuDF, Polars, PySpark, etc) for future parallelizability, targeting 1000X speedup.
  • Responsibility: Coordinate the design and development of ETL framework components. Give instruction to ETL research intern and provide code review and design guidance for the project participants.
  • Accomplishment: Have wrapped the framework into a workable python package and successfully imported it into two production projects, with ETL business logic automatically rendered on the Airflow UI in an easily traceable way.

Enhance and Maintain House Price and Mortgage Loan API

2022/2-2022/7

  • Responsibility: API Service maintenance, code refactoring, and model performance enhancement for the house-price/mortgage loan automatic appraisal system. 
  • Accomplishment: 
    1. Encrypted API re-routing: 
      • Re-route the internal mortgage API service as an encrypted API service for external client. Understand and implement the RSA/AES double encryption protocol under spec-ambiguous situation by investigating client-side PHP code. 
    2. Code refactor and migration: 
      • Reduce the cognitive complexity of service code from 1000-line-single-file situation by thoroughly understand the business logic and refactoring it into chain-of-command design pattern. 
      •  Design common module with logging mechanism to reduce future maintenance cost. 
      •  Draw and carry out the code migration plan without compromising the 24/7-criteria. 
    3. Re-design of house appraisal model for interpretability:  
      • Coordinate with research institution and business unit to build a business interpretable deep learning model. 
      • Re-design the loss function with regularization term to meet the legal requirements. 
      • Reducing the model inference time by adopting Google’s state-of-the-art nearest neighbor algorithm for referential house searching.  

Scalable ETL Pipeline for Credit Loan Marketing Data

2021/8-2022/1

  • Responsibility: 
    1. Orchestrate the cross-department coordination of the development process.
    2. Design a low-code python-SQL interface for the data-analyst of business unit and provide development and CICD guidance.
    3. Ensure business-logic-extensibility in considerations of future marketing campaign. 
    4. Ensure timely delivery of 7 million customer campaign data under 1day computation criteria.
  • Accomplishment: 
    1. Have helped the data-analyst of business unit successfully incorporate new campaign business logic into the production pipeline.
    2. A comprehensive tutorial to the development interface and CICD toolkits, enabling smooth new feature extension with zero-guidance.
    3. Significantly speedup the pipeline from 5d to 8h via map-reduce parallelization with multiple Airflow worker nodes. 

PyTorch development framework for Industry-Academy Cooperation

2021/4-2022/8

  • Goal: Develop Pytorch model development framework to reduce the academy-to-company code migration cost.
  • Features:
    1. Support training, validation, testing, weight/performance inspection, and  check-pointing of models with different architecture.
    2. Fixed experimentation flow for all models with formatted running script and folder structure, to enhance code readability and reproducibility.
    3. Support lazy evaluation and visualization of data pre-processing, avoid re-generation of data in experimentation scenario.
    4. Supporting parallel model hyper-parameter tuning via Ray (a general python parallelization framework).
  • Tools: Pytorch-lightning, Ray, TensorBoard, pyflow-viz

2D Indoor Positioning System through Android App

2014/1-2015/1 

Instructor: Professor Ren-Song Tsay
  • Survey on the state-of-the-art indoor positioning technologies and write a project proposal. Investigate the relationship between distance and the amplitude of the Bluetooth signal through experiment. Develop an android app that fuses the signals of Bluetooth and Geo sensor for position estimation. 
  • Score: A+ 

RESEARCH

Develop techniques applicable to the music industry and design experiments for proof-of-concept

2015/9-2020/1  

Instructor: Professor Homer H. Chen  

  • Developed a context-based tag propagation method to reduce the training noise and successfully improved a deep music auto-tagging model (SampleCNN) by 25.8% in MAP
  • Enhance the robustness of the tag propagation method and successfully extended the improvement to two other neural networks (CRNN and 2D-CNN) with the increase of improvement reaches 6.5%, 4.9%, and 5.5% (for SampleCNN, CRNN, and 2D-CNN, respectively)
  • Responsibility: Build up the experiment acceleration (via GPU) environment on a Linux-based server; Design the model evaluation and training strategy with TensorFlow. 
  • Conduct error analysis to understand the problem in the training data using Matplotlib and Seaborn. Tune the hyper-parameters during model development. Accelerate the evaluation and data visualization process using ray, a parallel processing package. 

Research proposal in music for lab funding from the Ministry of Science and Technology (MOST)

2015/9-2017/10 

EDUCATION 

M.S. in Graduate Institute of Communication Engineering, National Taiwan University 

2015/9 ~ 2020/1 

  • Multimedia Signal Processing (A) 
  • Special Topics on Internet of Things (A): Develop an IOT product and demonstrate its functionality. 
  • Computational Methods and Tools for Data Science (A): Familiarize myself with basic EDA (exploratory data analysis) techniques including PCA and t-SNE.

B.S. in Electrical Engineering Department, National Tsing Hua University

2011/9 ~ 2015/6

  • Programming Classes: Logic Design (A+) / Logic Design Lab (A+) / Embedding System Lab (A+)  / Computer Programming Design (A+)
  • Math Classes: Calculus I&II (A+/A+) Linear Algebra (A+) / Numerical Analysis (A) 

SKILLS


    • Programming Skills: Design Patterns、ETL、Image Building、Machine Learning、Parallel Acceleration、Python SDK Design、Refactoring 
    • Development Environment: Linux, Docker, Oracle-Cloud, Visual Studio Code 
    • Computer Languages: Python、C++、SQL、JAVA 
    • Tools for Machine Learning and Data Science: Pytorch、Pytorch-Lightning、CuDF (GPU-accelerating dataframe)、Pandas、Networkx、LightGBM、DeepGraphLibrary 
    • Tools for Model Serving, Deployment, and Data Pipeline: Airflow、FastAPI、 k8S、PostgresDB、RedisGraph、Neo4j、Ray For Collaboration: Github、Azure DevOps