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mjsequera.com Español

Marcos Jesús Sequera Fernández

Software engineer based in Spain. I build custom software, IT security tools and websites for businesses.

Get in touch Freelance, available for projects

Projects

Foruster’s home screen: explore the computer without touching it or acquire evidence, and the list of recent cases.

Foruster

Digital forensics for police units and court experts: it collects evidence from a running computer and records every step, so the report holds up under review.

Project website Code on GitHub

  • Collects evidence without changing the computer.
  • Records who did what, and when.
  • Signs the result so someone else can check it.
  • It is not officially certified, and says so.
The panel’s status page on a computer: connection, uptime, load, memory and connected devices.
The same status page on a phone.

Askey RTF8115VW router panel

A web page to manage the fibre router Movistar and O2 install in Spain: see how the connection is doing and change settings without fear of losing internet.

Screenshots use data from a simulated router. The code will be published later.

  • Connection and connected devices, with charts.
  • If a change cuts the internet, it undoes it.
  • Works the same on a computer and on a phone.
  • It only works with this router model.

Other work

  • MotoBros, an online shop for motorcycle parts in Badajoz. Under construction.
  • win-disk-info, free software to look up the disks of a Windows computer.

About

I’m a computer engineer from the Universidad de Extremadura, where I did research in cybersecurity and software development. Now I work on my own.

I like to deliver things that can be reviewed: documented, with what they do and what they don’t.

Now
Freelance, available for projects
Experience
Research staff (Personal Científico Investigador) at the Universidad de Extremadura, Nov 2024 to Feb 2026: cybersecurity and software development
Education
Master’s Degree in Computer Engineering (2026)
Bachelor’s Degree in Computer Engineering, Software Engineering track (2024)
Universidad de Extremadura
Languages
Spanish, native
English: Cambridge B2 First (165)
Skills
  • Rust
  • Python
  • C++
  • Cybersecurity and digital forensics
  • Web development
  • Self-hosted servers
  • Applied AI
  • AI-assisted development

Contact

Have a project in mind? Tell me what you need. I answer in English or Spanish.

contacto@mjsequera.com

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