Overview

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

During the course of this project,

• 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

QMoney Portfolio Analyser Interface

Fetch stock quotes and compute annualized stock returns

Scope of Work

• Used Tiingo’s REST APIs to fetch stock quotes.
• Computed the annualized returns based on stock purchase date and holding period.

Skills used

Java, REST API, Jackson

Refactor using Java interfaces and publish a JAR file

Scope of Work

• 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 used

Interfaces, Code Refactoring, Gradle

Improve application availability and stability

Scope of Work

• 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 used

Interfaces, Exception Handling

Enhance application performance

Scope of Work

• Improved application responsiveness by introducing multithreading.
• Wrote unit tests to measure performance improvements.

Skills used

Multithreading