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Mobile Application for Brokerage Clients

Expertise:
Mobile Development
FinTech
UI/UX Design
Tech Stack:
Swift (iOS)
Kotlin (Android)
Java (Backend Services)
Client: Major Banking Institution
One of the region’s largest banks, offering a wide range of financial services to both retail and corporate customers. As part of its digital transformation strategy, the bank set out to launch its first proprietary brokerage product — a mobile solution designed to serve a growing base of investment clients.
About the Client
The goal was to develop a cutting-edge mobile app for investors and traders — a solution built from scratch, avoiding off-the-shelf products. The app had to reflect the bank’s premium identity, deliver an intuitive user experience, and support real-time access to market data and trading insights. As the bank’s first standalone brokerage app, it needed to be secure, scalable, and visually striking.
Project Overview

Challenges & Objectives

The development team was tasked with building a fully custom mobile application tailored to brokerage clients. Key objectives included:
  • Designing a stylish, modern user interface that aligned with the bank’s brand.
  • Implementing multiple types of trading charts (line, candlestick, etc.).
  • Ensuring real-time market data via WebSockets.
  • Delivering native, high-performance apps for iOS and Android.
  • Integrating with the bank’s internal brokerage and trading systems.
  • Guaranteeing enterprise-level data security.
  • Laying the groundwork for future scalability (portfolio analytics, push notifications, multi-portfolio support).
Implementation
The app was developed entirely from scratch, with no reliance on pre-built frameworks or design systems:
  • 01
    Built natively using Swift for iOS and Kotlin for Android, ensuring a responsive and fluid user experience.
  • 02
    Used Java on the backend to develop secure APIs and integrate with internal brokerage systems.
  • 03
    Integrated WebSockets to deliver live quotes and real-time trading updates.
  • 04
    Developed custom interactive charts with zoom, pan, and historical data views (line, candlestick, etc.).
  • 05
    Designed a bespoke UI with a clean, premium look — optimized for both light and dark modes.
  • 06
    Implemented OAuth 2.0 and JWT authentication, with full encryption of all user data and API communications.
  • 07
    Adapted the app for various screen sizes and devices, ensuring consistent UX across platforms.
  • 08
    Conducted comprehensive QA and usability testing with both internal teams and live user groups.

Outcomes & Business Impact

The launch of the brokerage mobile app marked a major milestone in the bank’s digital journey. Notable outcomes included:
  • Smooth rollout on both iOS and Android with user ratings of 4.8+ in app stores.
  • 25% increase in client engagement with brokerage services within the first 3 months post-launch.
  • Boosted customer loyalty through enhanced functionality and seamless user experience.
  • Established a robust technical foundation for future features like investment insights, portfolio analytics, and alerts.
  • Positioned the bank as a modern, innovative player in the brokerage space.
  • Strengthened internal expertise — the app became a benchmark for mobile development across the organization.
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