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ESTYNELTD
International LimitedBuilding Solutions • Empowering Possibilities
Fintech, Wallets & VTU Telecom Engineering

Bank-Grade Fintech Systems & Automated VTU Platforms.

Build secure financial applications engineered for zero-discrepancy double-entry accounting, automated telecom bill payment switches, and multi-currency checkout. Estyne International Limited delivers enterprise fintech architectures with 100% IP ownership.

ACID Double-Entry Ledgers
PCI-DSS Security Standards
100% Source Code Transfer
WhatsApp Direct
FINTECH CORE PROTOCOL
Standard Security Protocols:
  • Immutable Double-Entry Ledger Bookkeeping
  • Automated Airtime, Data, Electricity & Cable VTU Switch
  • Multi-Provider Smart Failover with Zero Transaction Drop
  • Virtual Bank Account Generation (Wema/Providus/Monnify)
  • Tier 1-3 Automated KYC Verification (BVN/NIN/Liveness)
  • HMAC SHA-256 Webhook Signature Verification
Reconciliation Accuracy:100.00% Zero-Loss
Fintech Capabilities

Fintech & Payment Solutions We Deliver

Engineered with cryptographic rigor, fault-tolerant failovers, and seamless UX across web and mobile.

01

VTU & Telecom Bill Payment Platforms

Automated airtime, mobile data, electricity disco tokens, and cable TV subscriptions with instant multi-telco failover switches.

Stack: Node.js, PostgreSQL, MTN/Airtel/Glo APIs, Redis
02

Digital Wallets & Neo-Banking Apps

Customer and merchant mobile wallets, virtual account generation, P2P money transfers, and transaction statements.

Stack: Flutter, React Native, Monnify, Paystack, Providus
03

Escrow & P2P Payment Platforms

Trust-free milestone escrow contracts for e-commerce, real estate, and freelance marketplaces with dispute arbitration flows.

Stack: Next.js, Node.js, Webhooks, Multi-sig logic
04

Cross-Border Remittance & Currency Swap

Multi-currency wallet ledgers (USD, GBP, EUR, NGN, KES), live FX rate aggregation, and international settlement rails.

Stack: Python, Redis, Stripe, Wise, Banking APIs
05

POS Terminal & Hardware Integration

Custom POS applications communicating with Android POS terminals, thermal printers, and barcode scanners for retail transactions.

Stack: Android SDK, Kotlin, Thermal Bluetooth SDKs
06

Automated Reconciliation & Accounting

End-of-day bank statement parsing, settlement batching, discrepancy alerts, and accounting export for financial audits.

Stack: PostgreSQL, Celery/BullMQ, Cron, Excel Exports
Flagship Fintech Architecture

High-Throughput VTU Telecom & Bill Payment Switch

Engineered an automated telecom VTU mobile and web platform processing high-volume daily transactions. Designed multi-provider automatic failover between aggregators, double-entry wallet balance ledger, instant virtual accounts, and real-time push notifications.

99.98%
Delivery Success Rate
< 1.2s
Avg Transaction Speed
0.00%
Ledger Discrepancy
Read Full Case Study
FAQ

Frequently Asked Questions About Fintech Development

We architect immutable double-entry ledger systems with database-level ACID transactions, row-level locks, and idempotent webhook processing. Every debit has a corresponding credit, eliminating duplicate disbursements, race conditions, or negative balance vulnerabilities.

Ready to Launch Your Fintech or VTU System?

Schedule a 30-minute technical architecture session with our principal fintech engineers. We will review your transaction flow, API integrations, and regulatory requirements.

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