AWS Event-Driven FinOps Platform

A realistic reference architecture for an event-driven banking platform on AWS, combining domain events, service selection, FinOps, security and observability.

Live portfolio / Portfolio ao vivo

• Production: AWS Event-Driven FinOps Platform
• Documentation: Project docs
• GitHub: fernandofatech/aws-event-driven-finops-platform
• Author: Fernando Francisco Azevedo · LinkedIn · GitHub

This public repository is part of a bilingual portfolio focused on solution architecture, AWS, AI, MCP/tooling, DevSecOps, and production-ready engineering practices.

Este repositório público faz parte de um portfólio bilíngue focado em arquitetura de soluções, AWS, IA, MCP/tools, DevSecOps e boas práticas de engenharia para produção.

Scenario

The fictional platform models a banking event mesh with events such as:

• AccountOpened
• PixPaymentRequested
• TransactionAuthorized
• FraudRiskScored
• StatementGenerated

AWS services covered

• Amazon EventBridge for domain event routing.
• Amazon SQS for buffering and decoupling.
• Amazon Kinesis Data Streams for ordered streaming.
• Amazon MSK for Kafka-compatible high-volume workloads.
• AWS Lambda and Step Functions for serverless processing.
• DynamoDB for idempotency and event state.
• CloudWatch and X-Ray for observability.

What makes it portfolio-ready

• Shows real trade-offs between AWS event services.
• Treats cost as an architectural requirement.
• Documents event contracts and ADRs.
• Includes tests for decision logic.
• Uses CI and GitFlow-compatible contribution guidance.
• Includes a static frontend in frontend/ ready for Vercel deployment.
• Automates CodeQL, Trivy, Gitleaks, dependency review and package audits.

Run locally

python -m pip install -e . pytest
pytest -q

Frontend

cd frontend
npm ci
npm run lint
npm run build

The frontend is intentionally static and dependency-light to keep the portfolio demo fast, secure and easy to deploy.

Operations

See OPERATIONS.md for GitFlow, Vercel secrets and security pipeline details.