Charles Lee, Query Optimization Developer in New York, NY, United States
Charles Lee

Query Optimization Developer in New York, NY, United States

Member since February 7, 2017
Charles is an application and database developer with more than 5 years of experience. He has been the database owner of multiple products—including an automation tool used extensively in asset management at JPMorgan Chase and a bank deposits pricing tool with 20+ clients and more than $1 billion under analysis.
Charles is now available for hire


  • Novantas
    Windows PowerShell, Sublime Text, Subversion (SVN)...
  • JPMorgan Chase
    Informatica, Oracle, Visual Studio, SQL Server Management Studio, T-SQL...



New York, NY, United States



Preferred Environment

Spyder, Sublime Text, SQL Management Studio, Windows

The most amazing... I considered recently was a joint venture to buy a Bitcoin ATM and put it in a high-traffic area in New York City or India.


  • Senior Database Developer

    2014 - 2017
    • Worked as the database owner of a bank deposits analytics dashboard with 20+ clients and more than $1 billion in total assets under analysis.
    • Helped a triple-client base and assisted an international expansion by maintaining a master version of the SVN code repository and synchronizing the shared code across all clients and environments.
    • Coordinated the database deployments of bi-monthly UI releases across 5 time-zones and multiple servers.
    • Developed new features, enhancements, utilities, and bug fixes—e.g. improved the accuracy of tracking CD renewal balances.
    Technologies: Windows PowerShell, Sublime Text, Subversion (SVN), SQL Server Management Studio, Microsoft SQL Server
  • Application Developer

    2011 - 2013
    JPMorgan Chase
    • Led the development of a technology cost savings initiative that was promoted globally and led to $3 million in savings for asset management in 2012.
    • Brought transparency to recurring and erroneous technology charges via monthly billing to all asset management end-users.
    • Led the development of a suite of email-based automation tools used firm-wide—15,800 distinct users and 116,000 transactions processed in 2012.
    • Owned the Informatica ETL process and Oracle PL/SQL algorithm that allocated server-level costs to individual applications based on usage.
    Technologies: Informatica, Oracle, Visual Studio, SQL Server Management Studio, T-SQL, Subversion (SVN), VB.NET, C#, Microsoft SQL Server


  • Personal Website | Hugo on GitHub Pages

    This GitHub repository contains both the code for my personal website (master) and the files built using Hugo (GitHub-pages).

  • Steem Upvote Bot | Python and Heroku

    Steem is a blockchain-based, social news platform where posters and upvoters, i.e. curators, are rewarded directly with cryptocurrency. This is a guide to creating a simple bot that will periodically upvote a random post on the Steem blockchain.


  • Languages

    SQL, T-SQL, Python, VB.NET, C#, Visual Basic .NET (VB.NET)
  • Storage

    Databases, Microsoft SQL Server, SQL Server Management Studio, PL/SQL, PL/SQL Developer, Oracle PL/SQL, PostgreSQL, SQLite, MySQL
  • Other

    Freelance, Software Development, Blockchain Development, Performance Optimization, Operations Research, Query Optimization, Informatica, Algorithms, Machine Learning, Data Structures, Bitcoin, Deep Learning
  • Frameworks

    Windows PowerShell
  • Libraries/APIs

    Scikit-learn, SciPy, NumPy, Pandas
  • Tools

    SQL Management Studio, Spyder, Visual Studio, Subversion (SVN), Sublime Text, Sublime Text 3, Notepad++, Git, Jira, MATLAB
  • Platforms

    Windows, Oracle, Blockchain


  • Bachelor of Science in Operations Research
    2007 - 2011
    Cornell University - Ithaca, NY, USA

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