QMoney

QMoney is a visual stock portfolio analyzer. It helps portfolio managers make trade recommendations for their clients.

During this Micro-Experience-

• Implemented the core logic of the portfolio manager and published it as a library.
• Refactored code to add support for multiple stock quote services.
• Improved application stability and performance.

QMoney Architecture

Basic Concept Image

QMoney Portfolio Manager Interface

QMoney Modules

1. Fetch stock quotes and compute annualized stock returns

   • Used Tiingo’s REST APIs to fetch stock quotes.
   • Computed the annualized returns based on stock purchase date and holding period.
   • Skills Learned:
     • Java, REST API, Jackson
       

2. Refactor using Java interfaces and publish a JAR file

   • Refactored code to adapt to an updated interface contract published by the backend team.
   • Published the portfolio manager library as a JAR for easy versioning and distribution.
   • Created examples to help document library (JAR) usage.
   • Skills Learned:
     • Interfaces, Code Refactoring, Gradle

3. Improve application availability and stability

   • Added support for a backup stock quote service (Alpha Vantage) to improve service availability.
   • Improved application stability with comprehensive error reporting and better exception handling.
   • Skills Learned:
     • Interfaces, Exception Handling