FINTECH INFRASTRUCTURE // SUB-50MS LEDGER ENGINE

Fintech, Digital Banking &Payment Infrastructure

Institutional-grade financial technology platforms built with distributed ledger precision, sub-50ms transaction processing, automated KYC/AML pipelines, and multi-rail payment gateway routing.

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TELEMETRY // Fintech, Digital Banking &

VERIFIED

Transaction Latency

< 45ms

Sub-Second Ingress & Ledger Posting

Security Standard

PCI-DSS L1

SOC-2 & Hardware Vault Hardened

Ledger Reliability

100%

Zero-Drift Double-Entry Accounting

Transaction Concurrency

High Concurrency

Target Architecture Benchmark (<50ms)

>_IP Ownership:100% Guaranteed

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System Topology

High-Throughput Financial Rails & Ledger Mesh

Secure end-to-end payment lifecycle with real-time fraud scoring and ledger immutability

STEP 01VERIFIED GATE

Customer Ingress & Biometric KYC

React Native & OCR / Liveness Engine

National ID verification, facial biometric matching, and automated AML sanctions screening.

STATUSACTIVE PIPELINE

STEP 02VERIFIED GATE

Payment Gateway & Switch Router

Go Microservices & Kafka

Smart routing across UPI, Cards, Wire (ACH/NEFT/SWIFT), and crypto settlement rails.

STATUSACTIVE PIPELINE

STEP 03VERIFIED GATE

Real-Time AI Fraud Prevention

Python / Redis Vector Engine

Sub-15ms velocity checks, device fingerprinting, and risk-score authorization.

STATUSACTIVE PIPELINE

STEP 04VERIFIED GATE

Immutable Financial Ledger

PostgreSQL Serializable Isolation

Double-entry cryptographic ledger guaranteeing debit-credit balance with zero drift.

STATUSACTIVE PIPELINE

Modular Architecture

Deep-Dive Engineering Modules

Every system is decomposed into robust, battle-tested architectural layers built for fault tolerance.

01FINANCIAL CORE PRECISION

Immutable Double-Entry Core Banking Ledger

Institutional multi-currency ledger engine enforcing mathematical balance across customer accounts, escrow holdings, and settlement clearing accounts.

Strict double-entry bookkeeping guaranteeing zero phantom balances or rounding drift

Sub-50ms transaction execution supporting thousands of concurrent balance updates

Automated end-of-day (EOD) interest calculation, ledger reconciliation, and batch clearing

Cryptographic hash chaining on transaction records ensuring audit immutability

Technical Specification:Go (Golang) + PostgreSQL 16 Serializable + Redis Redlock

02REGULATORY COMPLIANCE

Automated KYC, AML & Biometric Onboarding Pipeline

Frictionless user identity verification connecting with government registries, AI face liveness detection, and global sanctions watchlists.

AI document OCR extracting data from Passports, Driving Licenses, National IDs, and PAN/Aadhaar

3D Facial Liveness detection preventing spoofing, deepfakes, and identity fraud

Automated AML screening against OFAC, PEP, and international sanctions databases

Risk-tiered onboarding approval workflows with manual compliance officer review desks

Technical Specification:Python FastAPI + Onfido/Persona API Integration + OpenCV

03PAYMENT RAILS ROUTER

Multi-Rail Payment Gateway Switch & Escrow Engine

Intelligent payment orchestration platform dynamically routing transactions through optimal gateway providers to maximize success rates and minimize fees.

Smart routing engine falling back to backup gateways if the primary provider fails

Multi-party split payments and timed escrow release for digital marketplaces

Tokenized card vault compliant with PCI-DSS guidelines (zero plain card data stored)

Instant webhook dispatchers delivering real-time payment status updates to merchant apps

Technical Specification:Node.js TypeScript + Kafka Event Bus + Stripe / Razorpay / Adyen Integrations

04CREDIT & RISK SCORING

Lending, Micro-Credit & Automated Loan Servicing Engine

End-to-end loan origination and servicing software with automated credit risk scoring, EMI schedule calculation, and automated collection dunning.

Configurable loan products (Buy-Now-Pay-Later, Peer-to-Peer, SME Working Capital, Mortgages)

Automated bank statement analyzer calculating Debt-to-Income (DTI) ratios and risk scores

Recurring auto-debit collection integration (e-NACH, SEPA, Recurring Card Subscriptions)

Delinquency management and automated late penalty calculator with recovery dispatch workflows

Technical Specification:Next.js + Go Microservices + Automated e-Mandate Integrations

05INSTANT TRANSFERS

Digital Wallet, Peer-to-Peer (P2P) Rails & Escrow Accounts

High-throughput digital wallet infrastructure supporting virtual balances, stored value accounts, instant QR code peer payments, and conditional escrow.

Sub-100ms wallet-to-wallet internal transfers with zero ledger reconciliation discrepancies

Dynamic QR code generator for merchant payments with instant WebSockets confirmation

Tiered daily wallet balance and transaction limits with automated KYC-gated upgrades

Multi-currency wallet balances with real-time foreign exchange (FX) conversion rates

Technical Specification:Go (Golang) + Redis In-Memory Shards + PostgreSQL Ledger

06THREAT MITIGATION

Real-Time AI Fraud Detection & Transaction Anomaly Engine

Autonomous machine learning risk engine analyzing velocity, device fingerprints, geolocation hops, and spending anomalies to block illicit transactions.

Real-time machine learning inference assessing transaction risk scores in under 15ms

Device fingerprinting detecting root/jailbreak, VPN/proxy spoofing, and emulator environments

Automated challenge triggers (SMS OTP, Biometric MFA) on anomalous transaction spikes

Regulatory suspicious activity report (SAR) generator for financial intelligence units

Technical Specification:Python / Rust Anomaly Engine + Kafka Stream Processor + Redis Bloom Filters

Production Tooling

Battle-Tested Technology Stack

Strictly modern, open-source, and long-term durable frameworks with zero proprietary lock-in.

Frontend & Mobile Banking

Next.js 15

React Native (iOS/Android)

TailwindCSS

Biometric SDK

Core Backend & Engines

Go (Golang)

Rust / C++ Microservices

Node.js TypeScript

Apache Kafka

Databases & Ledgers

PostgreSQL 16 (Serializable)

Redis Cluster

ClickHouse (Analytics)

AWS KMS Vault

Compliance & Security

PCI-DSS–Aware Payment Architecture Hardening

SOC 2–Aligned

mTLS 1.3

Hardware Security Modules (HSM)

Sprint Roadmap

Phased Sprint Delivery Lifecycle

Predictable 2-week agile sprints with tangible deliverables and live demos at every milestone.

Phase 01Week 1 - 2

Regulatory Compliance Audit & Ledger Architecture Design

Financial data models, double-entry ledger architecture, and compliance roadmap.

SIGNED OFF

Phase 02Week 3 - 6

Core Ledger, Account Vault & Database Engine Build

Double-entry ledger engine, transaction state machine, and balance locks.

SIGNED OFF

Phase 03Week 7 - 9

Payment Switch Integration & KYC/AML Pipeline

Gateway adapters, smart routing switch, OCR document ingestion, and liveness check.

SIGNED OFF

Phase 04Week 10 - 12

Mobile Banking Apps & Merchant Portal Development

iOS/Android customer banking app, merchant checkout SDK, and admin risk console.

SIGNED OFF

Phase 05Week 13 - 14

Penetration Testing, PCI-DSS Hardening & Production Go-Live

Third-party VAPT report, encryption key rotation, bank sandbox verification, and go-live.

SIGNED OFF

Tangible Handover

What You Receive Upon Completion

Complete operational independence with 100% intellectual property transfer and documentation.

Git Repository (Go / TypeScript)

Fintech Core Engine & Ledger Repository

Complete banking microservices, ledger codebase, and gateway orchestration engine.

INCLUDED IN REPO

JavaScript / Python SDK + OpenAPI 3.1

Merchant Integration SDKs & OpenAPI Specs

Developer documentation, sandbox environments, and plug-and-play checkout widgets.

INCLUDED IN REPO

Security Assessment Report

Security Hardening & VAPT Audit Dossier

Penetration test report, threat modeling diagrams, and PCI-DSS–aware workflows verification.

INCLUDED IN REPO

Operational SOPs

Disaster Recovery & Key Management Runbooks

Standard operating procedures for ledger audits, key rotation, and automated failover.

INCLUDED IN REPO

Production Case Study

Fintech & Cross-Border Payments

Representative Implementation: Digital Wallet & Payment Routing Engine

The Architectural Challenge

Suffering from payment drop-offs due to unstable single-gateway connections and manual KYC reviews that took 48+ hours per customer onboarding.

The Deployed Engineering Solution

Engineered an automated payment orchestration switch across multiple banking rails with sub-45ms latency and an instant AI KYC pipeline verifying national IDs in under 30 seconds.

Validated Business OutcomesLIVE AUDIT

KPI 01

99.4% (Up from 95.2%)

Transaction Success Rate

KPI 02

Sub-Minute Automated

Customer KYC Verification

KPI 03

Multi-Currency Automated Settlement

Payment Routing Engine

KPI 04

0.00% (Zero Drift)

Ledger Discrepancy

Transparent Pricing

Investment & Delivery Tiers

Milestone-gated fixed sprint agreements with 100% intellectual property transfer and no hidden fees.

MERCHANTS & AGGREGATORS4 - 6 Weeks

Payment Gateway & Checkout Platform

$8,500 - $15,000

Custom payment switch and checkout orchestrator with multi-gateway failover.

Multi-gateway payment routing with automated instant failover

Custom branded checkout modal with tokenized card vault

Automated merchant settlement calculations and fee deductions

Real-time webhook notifications and transaction query APIs

Merchant dashboard with refund management and analytics

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MOST POPULAR8 - 12 Weeks

Digital Wallet & Neo-Banking Platform

$18,000 - $35,000

Full neo-banking suite with double-entry ledger, customer mobile apps, and automated KYC.

High-throughput double-entry core ledger engine (25K TPS)

Automated AI KYC/AML verification pipeline with liveness check

Customer iOS & Android mobile banking apps with biometric auth

Peer-to-peer instant transfers, QR payments & bill settlements

PCI-DSS compliant architecture with encrypted data vault

Super-admin risk management and suspicious activity monitoring

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ENTERPRISE & NBFC12 - 18 Weeks

Institutional Core Banking & Lending Suite

$40,000 - $80,000+

Comprehensive financial ecosystem for licensed digital banks, NBFCs, and global lending networks.

Complete lending management system with automated credit scoring

e-NACH / recurring auto-debit collection and late fee dunning

Multi-currency cross-border remittance engine with FX rates

Direct core banking integration (ISO 20022 / Open Banking APIs)

Multi-region active-active cloud deployment with 99.9%+ uptime SLA

Dedicated fintech architect and compliance auditing support

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Technical Clarity

Frequently Asked Questions

Direct technical answers to common questions regarding our Fintech, Digital Banking & engineering protocol.

Our ledger operates on strict double-entry principles inside PostgreSQL serializable isolation transactions with distributed Redis redlocks. Every credit has an equal debit, and balance locks prevent concurrent race conditions under any traffic surge.

INTEGRATED ENGINEERING ECOSYSTEM