You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Mario FernandezMF

Mario Fernandez

Full-Stack Software Engineer

€200/day
Madrid, ES
3-7 years

Average response time: 1 hour

About Mario

Mario Fernández Álvarez


Full-Stack Developer · Freelance

---

5+ years building custom software for SMBs and startups across **healthcare, renewable energy, e-commerce, hospitality, and legaltech**. I've worked on dozens of freelance projects — each one in a different world, and that's exactly how I like it. I don't do cookie-cutter solutions.

I've founded my own companies, shipped products with global reach, and collaborated with international clients. I move fast, think creatively, and care about the business problem as much as the code.

## What I do



I build full-stack web applications — backend architecture, APIs, user-facing interfaces — designed to digitize manual processes, automate operations, and scale with your business. If it can be turned into software, I'll make it work.

## How I work



Business first, code second. I deliver in phases, communicate clearly, and skip the tech jargon. If you want someone who truly gets involved in your project, let's talk.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Ganima
    Software Engineer
    TECH
    January 2026 - May 2026 (4 months)
    Madrid, Spain
    Founder of Ganima (AI agent that replaces "Book a demo" buttons with live, personalized product demos — in real time, by voice, in any language, 24/7. Ganima navigates the actual product, answers questions live, qualifies leads against ICP, and books follow-ups with the right rep.
    artificial intelligence AI Automation JavaScript React.js MySQL
  • Asiron Tech
    Technical Lead
    DIGITAL AND IT
    November 2023 - December 2025 (2 years and 1 month)
    Madrid, Spain
    Founded Asiron Tech (or whatever your URL is), a software consultancy helping SMBs scale through process digitization and custom software. Led a team building tailored solutions for healthcare, energy, legal, and e-commerce sectors. End-to-end service: free consulting to define needs, phased development, and post-delivery support. Helped clients automate manual processes, reduce costs, and increase revenue.
    Amazon Web Services Python React.js Node.js PostgreSQL
  • Doofinder
    Full Stack Engineer
    E-COMMERCE
    June 2023 - May 2024 (11 months)
    Madrid, Spain
    Formé parte del equipo de ingeniería para el desarrollo del motor de búsqueda para e-commerces a nivel global de la compañía, donde optimizamos la experiencia del usuario y aumentamos las tasas de conversión de nuestros clientes. Mi rol estaba enfocado a la digitalización de procesos internos y desarrollo del propio software
    Docker Scrum Google cloud Python AI Agent

Recommendations

Be the first to recommend Mario

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Skill set

Categories