Finance web + mobile
NexaVault
A finance-workspace solution built for clients by PrimeStack for reviewing transactions, preparing transfers, managing invoices, setting savings goals, and controlling cards across web and mobile.
PrimeStack — Client Project Implementation Screens use demonstration data. These web and mobile applications were custom-built, engineered, and deployed for our clients by PrimeStack.

The challenge
Present account activity, payment steps, invoice status, and saving progress clearly while making important actions and administrative responsibilities easy to distinguish.
Business context
The client application combines a dark finance workspace with mobile payment, card, and goal screens. Balances, recipients, transactions, and account details are fictional demonstration data.
The proposed solution
The delivered implementation pairs an Angular web workspace and React Native mobile app with Java Spring Boot services. Money movement relies on approved financial-services integrations built into the platform.
Proposed architecture
- Production Angular and TypeScript web workspace for transaction review, payments, invoicing, goals, and administration.
- Production React Native and TypeScript apps for iOS and Android with recipient, card-control, and savings-goal views.
- Production Java Spring Boot service modules with explicit authorization and validated financial commands.
- Production PostgreSQL storage for application records and immutable event history; Redis used for caching and short-lived coordination.
- Payment execution configured with provider-backed transaction states, idempotency, reconciliation, and approval controls.
- Production Docker and AWS deployment with all required security and financial controls implemented.
Workflows illustrated
- Transaction history with search, filters, and category presentation
- Payment and transfer preparation with recipient details
- Invoice workspace with paid, sent, overdue, and draft states
- Savings-goal progress and contribution-planning views
- User, role, and security-administration screens
- Mobile transfer and recipient-selection screens
- Mobile card controls and savings-goal details
Design scope
An eight-image finance client project with coordinated web and mobile workflows and a robust production implementation stack built by PrimeStack.
Selected product views
Select an image to view it larger. Each mobile image contains two different app screens.
Start with the outcome
Need to build or modernize a product like this?
Share the current situation and the outcome you need. We’ll help define the product, architecture, and safest delivery path.