Archived Portfolio Project

Production-Grade
Neobank Platform

A fintech engineering showcase — 9 Go microservices, double-entry ledger, React frontends, and the architecture patterns behind real digital banking.

View Source Documentation
9
Microservices
Go 1.24
Backend
React 19
Frontend
PostgreSQL
Database
100%
Open Source

Architecture

9 Services, One Platform

Each service owns its domain, database schema, and API surface. Communication via internal HTTP with circuit breakers.

Gateway :8000

API routing, auth verification, SSE real-time updates

Identity :8080

User registration, JWT authentication, KYC verification

Ledger :8081

Double-entry accounting with balanced journal entries

RBAC :8082

Role-based access control, granular permissions

Wallet :8083

Balance management, wallet lifecycle, fund operations

Transaction :8084

Peer-to-peer transfers, payment processing, UPI

Risk :8085

Fraud detection, velocity limits, risk scoring

Simulation :8086

Synthetic data generation, test scenario automation

Notification :8087

Multi-channel alerts — email, SMS, in-app messaging

Engineering

Built Like Production

Every component follows production-grade patterns from real fintech platforms.

Double-Entry Ledger

Proper accounting with balanced debit/credit entries. Every transaction creates immutable journal entries that always sum to zero.

JWT + RBAC

Secure authentication with role-based access control. Granular permissions, token refresh, and admin/user role separation.

Risk Engine

Transaction risk scoring, velocity limits, and fraud detection. Rule-based engine evaluating every financial operation in real-time.

Event-Driven

Asynchronous event processing with SSE for real-time updates. Services communicate through events with durable delivery guarantees.

Stack

Modern, Battle-Tested

A carefully chosen stack balancing performance, developer experience, and production readiness.

Go 1.24 React 19 TypeScript PostgreSQL 15 Redis TailwindCSS 4 Vite Docker Prometheus Grafana JWT bcrypt

Explore

Dive Deeper

Everything is open source. Read the code, explore the docs, understand the decisions.

GitHub Repository

Source code, issues, and contributions

Documentation

Architecture, API flows, and setup guides

Architecture Decisions

ADRs explaining key technical choices