Víctor Fernández

Full Stack Developer

I build software that solves real problems — from the architecture to the detail.

Over four years taking platforms from technical debt to modern systems, with TypeScript, Angular, Node.js and .NET under clean and microservices architectures.

4+
Years of experience
4
Countries in production
20%
Faster API responses
Portrait of Víctor Fernández
The journey

Each project, a problem I learned to solve better.

2021 - 2024

Marketplace

Apprecio · Dcanje

I designed and built a marketplace from day one, live in 4 countries, from the backend to the seller portal, helping the team define its features.

  • Laid down the backend's base microservices structure with Node.js.
  • Built the Angular admin portal where sellers manage inventory, purchase orders and reports.
  • Owned the integration with Multivende (an inventory hub), which let us onboard a large number of sellers across multiple countries.
  • Maintained and improved the existing APIs, making responses up to 20% faster.
Node.jsAngularMicroservicesTypeScript
2024

HR Platform

Base Dos

I designed and implemented .NET microservices for several modules of Innovasoft, an HR platform where code quality was non-negotiable.

  • Built each module under clean architecture, with data access through Entity Framework.
  • Implemented unit, mutation and functional tests to safeguard code quality.
  • Worked alongside the frontend and QA teams in an agile setup with continuous integration.
.NETC#Entity FrameworkTesting
2025 - Present

Efleet

VistaTI

I modernized Efleet, a fleet-management platform carrying years of technical debt, then designed the architecture of its new version from scratch, owning the decisions.

  • Migrated the legacy system (Visual Basic and Angular 9) to .NET 8 and Angular 20, then designed the new version's architecture on Angular 22 and .NET 10.
  • Built a multichannel notification system: email, WhatsApp, push and WebSockets.
  • Designed the authentication and authorization flow, and helped define the business processes with the team.
  • Created shared packages to standardize projects company-wide, cutting duplication and speeding up new module development.
Angular.NETTypeScriptC#
What I master

Languages

  • TypeScript
  • JavaScript
  • C#
  • Python
  • SQL

Technologies

  • .NET
  • Node.js
  • Angular
  • NestJS
  • Express
  • React
  • Entity Framework
  • WebSockets

How I work

  • Clean architecture
  • Product vision
  • Autonomy & ownership
  • Teamwork