Challenges

14 technical challenges covering the full fintech stack — from banking ledger to Kubernetes infrastructure.

Backend Services

#	Challenge	Tech Stack	Status
01	Ledger GraphQL	Koa + GraphQL + Relay + MongoDB	Done
02	SPI Simulator	Fastify + ISO 20022 XML	Done
03	DICT Simulator	Express + Pix Keys	Done
04	ISO 8583	Fastify + Binary TCP	Done
05	Workflow Engine	Fastify + DAG + WebSockets	Done
06	Open Finance	Fastify + OAuth 2.0	Done
07	NFS-e	Fastify + SOAP/XML	Done
08	Report System	Fastify + PDF/CSV/XLSX + MinIO	Done
09	Leaky Bucket	Fastify + Redis + GraphQL	Done

Frontend

#	Challenge	Tech Stack	Status
10	Landing Page	Next.js 14 + Storybook + Radix UI	Done
11	KYC System	Vite + React + Zustand	Done

Infrastructure

#	Challenge	Tech Stack	Status
12	Proxmox	Ansible + Terraform	Done
13	CI/CD	GitHub Actions	Done
14	RFC	Documentation	Done