Production-Ready FinTech Systems: Architecture, Scale & Security
Details
## ⏱️ 3‑Hour Agenda
| Segment | Duration | Focus |
| ------- | -------- | ----- |
| | 15 min | Why FinTech? Challenges & trends |
| | 45 min | Monolith → Microservices → Serverless |
| | 40 min | Event sourcing, CQRS, security by design |
| ☕ Break | 10 min | — |
| | 40 min | Bottlenecks, migrations, scale |
| | 30 min | Teams design a FinTech micro-service |
| | 20 min | Tools, best practices, next steps |
### 1. 🔍 Welcome & Context (15 min)
- The FinTech landscape: payments, wallets, crypto
- Key demands: performance, reliability, regulation
- Overview of session flow and objectives
### 2. 🏗️ FinTech Architecture Patterns (45 min)
- Monolith (e.g., PayPal early): pros & cons
- Microservices (e.g., Venmo): decomposing for scale
- Serverless (e.g., Chime): autoscaling & cost-efficiency
- Hybrid/hub-and-spoke (e.g., Nubank): mixing approaches
***
### 3. 🔐 Key Design Principles (40 min)
- Asynchronous & Event-Driven flows (Kafka, RabbitMQ)
- Event Sourcing + CQRS: reliable ledgers & materialized views
- Security & Compliance by design: IAM, encryption, PCI/GDPR
- Resilience: retries, idempotency, circuit breakers, observability
***
### ☕ Break (10 min)
***
### 4. 📚 Real-World Case Studies (40 min)
- Database bottleneck audit: MongoDB freeze at 15 RPS → fix with microservices
- Legacy revamp: Bank system → cloud microservices & CI/CD
- Cloud scaling: AWS wallet launch 0 → 750K users with auto-scaling, Kubernetes, monitoring
***
### 5. 👥 Interactive Studio (30 min)
Task: Design a service (e.g., Payments, Fraud Detection, Wallet) focusing on:
- Architecture pattern
- Event handling
- Security & compliance
- Tech stack
Teams present core design in 5 minutes.
***
### 6. 🧭 Wrap-Up & Q&A (20 min)
- Revisit architecture choices and trade-offs
- Share FinTech tools and frameworks: Apache Kafka, Axon, Kubernetes, AWS Lambda, Datadog
- Provide next steps and community resources
- Encourage follow-up via GitHub/Discord for continued learning
***
## ✅ Why This Session Delivers
- Explores top FinTech architectures and real tradeoffs
- Combines theory with hands-on strategy
- Leaves attendees inspired to build secure, scalable systems
- Ideal for developers aiming to architect production-grade solutions