BiWeekly Mortgage Calculator

Developed an interactive mortgage calculator that integrates with an amortization API to model loan repayment scenarios. Transforms complex financial data into a clear, real-time experience that helps users understand the impact of additional payments.

Live demo

Impact

• Converts raw amortization data into actionable financial insights, with downloadable PDF
• Enables users to visualize time and interest savings from extra payments
• Delivers real-time feedback through dynamic frontend calculations

My Role

• Integrated with an external amortization API to retrieve loan schedules in JSON format
• Parsed and mapped API response data to drive UI outputs
• Built frontend logic to calculate and display interest savings and reduced loan duration
• Designed dynamic UI updates to reflect user input instantly

Approach

I leveraged an external API to handle the core calculations and focused on transforming its JSON response into meaningful, user-facing insights.

On the frontend, I extracted key values—such as payment schedules, interest totals, and loan timelines—and layered additional calculations to compare baseline vs accelerated payoff scenarios. This allowed users to clearly see both time saved and money saved based on their inputs.

Technologies Used

Vue JS

Bootstrap

Swagger API

Azure DevOps

Github Copilot

Node JS

Product