Financial platforms often require reliable access to capital gains data for reporting, analytics, and financial operations. The objective was to transform large datasets stored in spreadsheets into a programmatic interface that software companies could integrate directly into their applications.
The client maintained a large and frequently updated dataset of capital gains information stored in Excel spreadsheets. The goal was to create a system capable of delivering this data efficiently and securely to partner companies through an API.
Backend
Node.js

Hosting
AWS ECS with auto-scaling

Database
MongoDB Atlas
Virstack developed a REST API that allows software companies to retrieve capital gains data in a standardized format while ensuring reliability, scalability, and secure access.
A RESTful service allows partners to query capital gains data through HTTP requests, returning results in a standardized JSON format.
Unique API keys enable secure access while tracking usage and managing permission levels for partner companies.
Unique API keys enable secure access while tracking usage and managing permission levels for partner companies.
The platform is deployed on AWS ECS with auto-scaling to support concurrent requests and maintain service reliability.
The system allows seamless database replacement with updated spreadsheet data, ensuring the API consistently serves the most current information.
The platform enabled partner companies to access capital gains data programmatically while improving reliability and operational efficiency.

Efficient programmatic access to updated capital gains data

Infrastructure capable of handling concurrent requests and large query volumes

Improved partner management through API key-based authorization and usage tracking

Seamless updates allowing new spreadsheet data to be integrated without service disruption