KelaGroup – Banana Brokerage System
A production-grade fintech-style brokerage system handling complex financial calculations, real-time synchronization, and scalable data management using Flutter, .NET, and Firebase.
Calculation Accuracy
100%
Calculation Accuracy
100%
Financial Ledger Sync
Real-time
Stakeholder Management
Multi-party
The Challenge
Fragile Legacy Systems
Banana brokerage traditionally relies on manual paper-based ledgers, leading to calculation errors, data inconsistency, and lack of transparency between farmers and traders.
- 1
Manual billing errors in commission and tax calculations.
- 2
Difficulty tracking running balances for hundreds of farmers (Kissan) and traders (Vyapari).
- 3
Data loss risks and lack of real-time visibility into financial health.
The Solution
Quantum Engineering
We developed a cross-platform ecosystem with a smart 'Ledger Integrity System' that handles reversible transactions, ensuring financial data consistency even during bill edits.
- ✓
Flutter Desktop for high-volume brokerage operations.
- ✓
Cloud-synced mobile companion for lightweight access.
- ✓
.NET Backend for secure business logic and Firebase for real-time storage.
What We Built
Core Features
Automated Billing
Smart calculation of Gross/Tare/Net weights, commissions, and local taxes with multi-entry support.
Account Management
Dedicated ledgers for Farmers and Traders with full transaction history and running balances.
Reversible Edits
Unique rollback mechanism for bill edits to maintain financial integrity across all ledgers.
Real-time Sync
Firestore-backed updates ensure all devices see the latest transaction state instantly.
Enterprise Security
Multi-layer protection using Firebase Auth, .NET validation, and Cloudflare edge security.
Optimized UX
Keyboard-friendly desktop workflows designed specifically for low-tech high-volume users.
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