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  • TypeScript · Node.js · NestJS · Angular · REST APIs
  • Argentina

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Ripper-No-Chart/README.md

Andrés Ezequiel Herrera

Software Engineer | Full Stack Developer | Backend Developer

I build full stack web applications with a strong focus on backend development, REST APIs, TypeScript, Node.js, NestJS, Angular and production-ready systems.

My work is centered on building maintainable backend services, structured APIs, authentication flows, data validation, database modeling and frontend integrations. I also apply cybersecurity fundamentals as a secondary strength to build safer and more reliable applications.


Core Focus

  • Backend development with TypeScript, Node.js and NestJS
  • REST API design and implementation
  • Full stack web applications with Angular and React
  • Authentication, authorization and JWT-based access control
  • MongoDB and SQL database modeling
  • Multi-tenant SaaS architecture
  • Clean, maintainable and production-oriented code
  • API security fundamentals and secure coding practices

Main Stack

Backend

Node.js TypeScript NestJS Fastify Express Zod JWT REST APIs

Frontend

Angular React RxJS HTML5 CSS3 Sass

Databases & Infrastructure

MongoDB PostgreSQL MySQL Docker Cloudflare Railway

Tools & Security

Git GitHub Linux Postman OWASP API Security


What I Build

  • Full stack business management systems
  • Billing, sales and stock control platforms
  • REST APIs with authentication and validation
  • Multi-tenant SaaS applications
  • Internal tools for automation and operations
  • Backend services with clear contracts and maintainable structure

Development Principles

  • Strict TypeScript
  • Clean and modular architecture
  • Clear separation of responsibilities
  • RESTful API design
  • Input validation with schemas
  • Authentication and authorization flows
  • Minimal, maintainable and production-ready code
  • Documentation where it adds real value

Featured Work

Centrix

Multi-tenant business management platform for commerce operations, focused on sales, stock, products, users, reports and billing.

Tech stack: Angular, TypeScript, Node.js, Fastify, MongoDB, JWT, REST APIs, Cloudflare and Railway.

Main technical areas:

  • Multi-tenant frontend routing
  • REST API integration
  • Authentication and protected routes
  • Stock and billing workflows
  • Product and service management
  • Dashboard and reporting views
  • Production deployment workflow

Private repository. Technical case study available on request.

ICMarkets Trading Manager

Trading management and market analysis tool focused on market snapshots, pair scanning, trading workflows and structured JSON contracts.

Main technical areas:

  • Backend integration with trading data
  • Snapshot-based analysis workflow
  • Pair scanning with controlled request timing
  • Structured JSON contracts
  • Desktop application integration
  • Trading workflow automation

Private repository. Technical case study available on request.


Current Focus

I am currently focused on strengthening my profile for software engineering roles, especially in:

  • Backend development with Node.js, TypeScript and NestJS
  • REST API architecture and integration
  • Full stack applications with Angular and React
  • MongoDB and SQL-based systems
  • Multi-tenant SaaS architecture
  • Production-ready application delivery

GitHub Activity

Most of my active work is focused on backend development, Angular applications, REST APIs, multi-tenant systems and production-oriented full stack projects.

Some repositories are private because they belong to real products or internal tools. Public repositories and case studies are used to showcase technical decisions, architecture and implementation approach.


Contact

LinkedIn

Pinned Loading

  1. centrix-case-study centrix-case-study Public

    Technical case study of Centrix, a multi-tenant SaaS platform for sales, stock, billing and business management.

  2. trading-platform-case-study trading-platform-case-study Public

    Full stack trading platform case study built with Node.js, TypeScript, REST APIs, Electron, React and structured JSON contracts.

  3. storepoint-api storepoint-api Public

    Modular Point of Sale (POS) backend built with Fastify, TypeScript, MongoDB, Zod, and JWT. Includes full role-based access, validation, audit logging, and clean architecture.

    TypeScript 1

  4. AnagramTS AnagramTS Public

    Solve anagrams in Spanish using a dictionary via console

    TypeScript

  5. Employees-List Employees-List Public

    Simple CRUD in Angular

    TypeScript 9 3

  6. Task-Manager Task-Manager Public

    Simple task manager in Javascript

    JavaScript 9 6