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Modernization of Legacy Trading Platform with Enhanced User Experience and Scalable Infrastructure

tallium.com

Financial services

Fintech

Investment

Legacy System Limitations and User Experience Challenges

The existing monolithic trading platform suffered from performance instability, an overly complex interface, and difficulties in accessing essential data. The backend infrastructure (managed by Skillgo and LeanOn) was tightly coupled, leading to trading disruptions and scalability issues. Additionally, 15K existing users required seamless migration to a modernized platform.

About the Client

Prominent Swedish brokerage company specializing in trading, corporate finance, asset management, and issuing services with 15K custodian customers and 200 corporate clients.

Platform Modernization and Enhanced User Engagement

Replace legacy backend infrastructure with a scalable BaaS solution
Redesign UI/UX for intuitive user experience across web and mobile platforms
Integrate 14 third-party services for comprehensive financial operations
Migrate 15K existing users with zero data loss or service disruption
Implement AI-powered features and automated investment plans

Core System Functionalities and Feature Set

Multi-step user onboarding with personalized profiling
Real-time portfolio dashboard with asset breakdown
Market data visualization and trading interface
Order history tracking and execution management
Automated savings plan configuration
Secure document management and e-signature functionality
Integrated help desk with live chat support
Dark mode accessibility feature
Multi-language and RTL interface support

Technology Stack Requirements

Crosskey 1Factor backend solution

React.js for web development

React Native for mobile apps

Figma for UI/UX design

AWS for cloud infrastructure

OpenAI API integration

Third-Party System Integrations

BankID (digital identification)
Infront (real-time market data)
Morningstar (financial analytics)
Swish (mobile payments)
SharePoint (document management)
Graylog (log management)
Rollbar (error monitoring)
Zabbix (system reliability monitoring)
Postmark (email delivery)
Softtronic (custom IT solutions)
Milistream (data feeds)
SPAR (population register access)
OpenAI (AI features)
Crosskey (core banking backend)

System Performance and Security Standards

High-frequency trading capability with low-latency execution
99.99% system uptime SLA
End-to-end encryption for financial transactions
Multi-factor authentication and compliance with GDPR
Horizontal scalability for future user growth
Real-time error monitoring and automated recovery systems

Operational Efficiency and Market Competitiveness

The modernized platform is expected to reduce customer support requests by 100% through intuitive design, attract 1260+ new users annually, and streamline internal business processes across compliance and support departments. Enhanced performance will enable faster trade execution while AI-powered features and automated investment plans will position Mangold as a market innovator in Scandinavian financial services.