Fractional share trading for global equity acquisition

DESIGN • SOFTWARE DEVELOPMENT • MOBILE • DESIGN • SOFTWARE DEVELOPMENT • MOBILE

Challenge

Democratize access to international equity markets using domestic currency

New investment module

Develop a feature that integrates with the existing core platform, and multiple external providers to execute secure, real-time transactions.

Project

Fractional shares

The architecture followed a layered approach and MVVM (Model-View-View-Model).

The backend was built on Amazon Web Services (AWS) using a serverless and event-driven paradigm to ensure scalability, reliability, and cost efficiency.

Latency and performance

Amazon DynamoDB serves as the primary NoSQL datastore, enabling low-latency access to the core investment objects (users, tickers, holdings, transactions, etc.) required for a real-time mobile experience.

Latency and performance

Amazon DynamoDB serves as the primary NoSQL datastore, enabling low-latency access to core investment objects (users, tickers, holdings, transactions, etc.) required for a real-time mobile experience.

Event-driven integrations: Amazon SQS

Asynchronous communication both internally and with external systems for reliable execution of complex workflows.

SQS facilitates order processing from external brokers and enables decoupling from core banking systems.
Lambda functions ensure resilient event handling with built-in retry policies and DLQs.

Task automation

Amazon EventBridge automates recurring operational tasks that don’t require real-time user input, such as market data updates, and daily performance calculation for user portfolios and instruments.

New work framework

Administration of development, staging, and production environments via an IDP platform. Significant contribution to the modernization of the client’s mobile stack by driving the first 100% SwiftUI project on iOS.