Home Blog Series About

Loading home…

Makingcode

Practical notes on architecture, trade-offs, and code you can run in production.

Explore

Blog
About
RSS feed

Portfolio
GitHub
LinkedIn
Medium
CV

Technical blog by Andrés Esquivel

© 2026 · Built with Next.js

Loading series…

Fintech Core Platform | Making Code

Explore

Search articles…

Categories

Backend
Cloud & AWS
Architecture
Algorithms
Security & Crypto
AI & Applied ML
DevOps & Platform

Recent

Why I'm Rebuilding a Fintech Core — From Zero, SlowlyJun 15, 2026
How to Build a Multi-Tenant SaaS Application in NestJS Without Duplicating Your CodeApr 21, 2026
Your API Doesn't Need More Services, It Needs EventsApr 7, 2026
CQRS in NestJS: Stop Mixing Reads and Writes in the Same ServiceMar 24, 2026
Why Your NestJS Service Becomes a Mess (and How Hexagonal Architecture Fixes It)Mar 10, 2026

All series/Fintech Core Platform

Series

Fintech Core Platform

1 article

01ArchitectureJun 15, 20265 min read
Why I'm Rebuilding a Fintech Core — From Zero, Slowly
A LinkedIn post on fintech architecture, a recent technical challenge, and a decision to rebuild a banking core from scratch — slower this time, to actually learn.
Read article →

Series

All series
NestJS Enterprise4 articles
Fintech Core Platform1 article