Joshua
Sandanassamy

Cybersecurity student passionate about both red and blue teaming. I love turning complex security challenges into solid, practical solutions and I'm currently looking for an alternance.

JS Joshua Sandanassamy
JS
Joshua Sandanassamy

A future cybersecurity
professional

I'm a 22-year-old French future 3rd year student of the BUT R&T Cybersecurity at the IUT Nancy-brabois, in France. Passionate, versatile, and attentive to others, I'm eager to apply my skills and knowledge in a professional environment.

I'm currently seeking an internship in the form of an alternance for the 2026-27 school year, in any area of cybersecurity, blue teaming or red teaming alike. I work well both independently and as part of a team, and I love contributing to meaningful projects.

21
Certifications
73
TryHackMe badges
378
THM Rooms
4
Languages spoken

Skills & Technologies

The tools, languages and methods I use across security, development and design.

Cybersecurity

Penetration testing Digital forensics Social engineering AI security Defensive security Governance & Risk

Programming

Python Java C Swift HTML / CSS JavaScript

Networks & Systems

Cisco CCNA 1-3 UNIX Windows Docker Scripting

Methodologies

Agile Scrum Project management

Creative & Design

Photoshop After Effects Premiere Pro GIMP Blender Canva

Languages

These are the languages I can speak.

French Mother tongue
Tamil Mother tongue
English C1
German A2+

Featured Projects

Hands-on work from my studies, internships and practice labs.

POST
Post-Quantum Crypto ML-KEM mTLS Docker

QKD Key Management System

April to June 2026 · POST Luxembourg

Implemented a Quantum Key Distribution Key Management System compliant with ETSI GS QKD 014 (and ETSI 020, still in draft status). Built hybrid post-quantum key exchange with mutual TLS, deployed and tested as a secure multi-node, containerised architecture.

Python Incident Response Gamification

Don't Panic by CLUELESS

2025 · BTS project, with Tom Ebokolo & Engelina Gonçalves

A gamified incident-response simulation platform. Realistic scenarios for beginners and advanced learners, letting you train in a safe environment to better respond to real-life threats.

Red Team Blue Team CTF

TryHackMe Hands-on Labs

Continuous practice · #JoshRay

Ongoing offensive and defensive security training across hundreds of rooms. 71 badges earned and 356 rooms completed, sharpening practical penetration-testing and forensics skills.

Education & Experience

The studies and roles that shaped me as a future security professional.

Education

BUT R&T - Cybersecurity
IUT Nancy-Brabois · Nancy, France
Bachelor in Networks & Telecommunications, cybersecurity pathway.
2024 - 2026
BTS Cybersecurity
Lycée Guillaume Kroll · Esch, Luxembourg
  • Applied cybersecurity: penetration testing, digital forensics, governance, risk & defensive security.
  • Networks: Cisco CCNA 1, 2, 3.
  • IT operations: Windows & UNIX administration, scripting; project management with Agile & Scrum.
2021 - 2024
Bachelor in Applied Information Technology
University of Luxembourg · Belval, Luxembourg
  • Core IT & engineering: full-stack programming, mathematics & algorithms, big data.
  • Cybersecurity focus: IT security fundamentals and networks.
  • Mobility semester at UCLouvain, Belgium (Summer 2023).
2018 - 2021
Baccalauréat Général
Lycée Alfred Mézières · Longwy, France
Mathematics, Physics & Chemistry and Informatics majors.

Experience

Apr - Jun 2026
Cybersecurity Intern
POST · Luxembourg
  • Implemented a QKD Key Management System compliant with ETSI GS QKD 014 & early 020 standards.
  • Developed post-quantum cryptography solutions using hybrid key exchange (ML-KEM) and mutual TLS authentication.
  • Deployed and tested a secure multi-node architecture using containerisation (Docker).
July 2024
Summer Job
Deep · Leudelange, Luxembourg
  • Contributed to the post-merger transition of 4 companies, ensuring consistent branding across physical and digital assets.
  • Developed project management and team-collaboration skills within a complex organisational environment.
  • Applied social-engineering principles to improve communication across departments.
January 2018
School Internship
Acura Systems · Watford, UK
  • First professional experience during a one-week school internship in the UK.
  • Worked with a growing CCTV company in the Greater London area.
  • Gained initial exposure to the professional world and improved my English communication skills.

Certifications & Awards

Recognised credentials and continuous self-driven learning.

Cisco Ethical Hacker
Ethical hacking & penetration testing
LuxSkills 2026
WorldSkills, Cybersecurity category
Finalist
TryHackMe
Offensive & defensive security labs · #JoshRay
73 badges · 378 rooms
Cambridge English B2
First Certificate in English
2021
Microsoft Office Specialist
Expert level
Luxembourg Tech School
Tech & innovation programme
2021
Driving Licence, Category B
Car

My CV

Now that you know me, here's my CV to download.

CV - English
PDF
Download
CV - French
PDF
Download

Let's work together

Looking for an alternant trainee, or just need more information? Reach out anytime!