Hello!
I'm João Sousa
I'm a Computer Science Graduate
Hello, my name is João Sousa, I've completed my Bachelor's in Computer Science at Instituto Superior Técnico (2025), and I'm passionate about cybersecurity and computer networks.
Currently, I am working as a Technical Intern at Cisco's Data Center Server Virtualization TAC team.
Cisco Networking
Python
Capture The Flag
And More...
MY SKILLS
What I can do
I am a Computer Science graduate with hands-on experience in networking and cybersecurity. I enjoy tackling complex technical challenges, from configuring networks and troubleshooting systems to exploring vulnerabilities in Capture The Flag (CTF) competitions. My work combines practical problem-solving with continuous learning.
I’m committed to expanding my skills in areas like network administration, security analysis, and Python automation, staying up to date with the latest technologies and best practices in the field.
Certifications
Cisco Certified Network Associate (CCNA)
November 2025Validated skills in network fundamentals, IP connectivity, security fundamentals, and automation.
Cisco Certified DevNet Associate (DEVASC)
November 2025Validated skills in software development, including APIs, microservices, and application deployment.
Work Experience
Apprentice QA Automation Engineer
Sky Portugal | Jul 2024 – Aug 2024Enhanced Jira bug triage using GenAI to automate workflows. Developed Python scripts to integrate with Jira and Azure OpenAI.
Digital Business Engineer
t_insight | Sep 2024 – Feb 2025Contributed to the design and implementation of dynamic web applications using JavaScript, TypeScript, and ASP.NET MVC.
Technical Intern - TAC DCSV
Cisco | Sep 2025 - PresentStarting role supporting case workflows in data center virtualization environments.
MY PROJECTS
What I have built
Web Exploitation
Python
This repository is a growing collection of writeups for various Capture The Flag (CTF) challenges I've solved - mainly in the web exploitation area. It serves as a personal reference and a resource for others looking to learn from my experiences in solving CTF challenges.
ChessLab
React Native
Python
Firebase
ChessLab was a mobile app I began developing to help chess players improve their openings and tactical skills through a personalized training experience.
The app aimed to allow users to create and edit opening repertoires and practice puzzles. Although the project isn't completed, it gave me valuable experience in mobile app development and sparked my interest in integrating advanced learning features like Spaced Repetition.
The app aimed to allow users to create and edit opening repertoires and practice puzzles. Although the project isn't completed, it gave me valuable experience in mobile app development and sparked my interest in integrating advanced learning features like Spaced Repetition.
Plinko
React
TypeScript
Cloudflare Solutions
Developed a mobile Plinko Progressive Web App for a consulting firm to support interactive prize giveaways at promotional events. The application features an administrative interface that allows event staff to manage available products and monitor prize distribution in real time throughout the event. This solution was tailored for use by the firm's end client and is adaptable for various event scenarios, providing both engaging user experiences and robust inventory tracking for organizers.
Visit Web App