Khalid BARKAN

[ WHO I AM ]

Khalid Barkan

Positions	Software Engineer / Student / Startup Founder
Interested-in	Pure Mathematics / Cryptography / Advanced Machine Intelligence / Quantum Physics / Quantum Computers
Current-focus	Building @Xstartup / Studying at 1337
Hobbies	Music / Reading / Writing

I'm currently a student at 1337 and a software engineer. I'm also building my own startup on the side. I spend most of my time learning about low-level systems, math, cryptography and advanced machine intelligence. I like to build tools for my own good and some of it is public to use by others, you can check the projects part.

In my free time i do write and share my thoughts on substack, you can reach it through the link => [MY SUBSTACK] . my writings covers different topics include: linux, math, cryptography, computer stuff ...

[ SITE MAP ]

About

Background, skills, education, contact channels and how I think about things.

Projects

Real things I built -- garbage collectors, hash maps, ELF inspectors, and more.

Blog

Writing on Substack -- math, cryptography, Linux, philosophy, and whatever else is in my head.

Learning

Public repositories I use to study and take notes -- networking, memory, math, and more.

Curriculum

Projects built while learning -- practice, exercises, and things built to understand something deeper.

Lib

A personal library -- PDFs, papers, and resources worth keeping. Mine and others.

Media

A personal library -- Pictures, Videos ...etc, for me and the events i was in.

[ CONTACT CHANNELS ]

GitHub	github.com/xidruk
X / Twitter	x.com/xidruk
LinkedIn	linkedin.com/in/khalid-barkan
Substack	xidruk.substack.com
TryHackMe	tryhackme.com/p/xidruk
Email	khalidbarkan.contact@gmail.com

[ 01 -- ABOUT ]

$> EDUCATION :

Institution	Period	Status
1337 Coding School	2024-Present	enrolled
Sultan Moulay Slimane University	2021-2023	dropped out
EMSET-P >? Moroccan Specialized School of Technical Education	2022-2024	graduated

$> CERTIFICATIONS & DEGREES :

Title	Institution	Year
TSDI-Bac+2 Technical Degree	EMSET-P	2024

$> TECHNICAL SKILLS :

Category	Stack
Languages	C, C++, Python, Bash
Platforms	Linux
Containerization	Docker
Version Control	Git, GitHub

$> SPOKEN LANGUAGES :

Language	Level
Arabic	native
Tamazight	native
English	working proficiency

$> CONTACT CHANNELS :

GitHub	github.com/xidruk
X / Twitter	x.com/xidruk
LinkedIn	linkedin.com/in/khalid-barkan
Substack	xidruk.substack.com
TryHackMe	tryhackme.com/p/xidruk
Email	khalidbarkan.contact@gmail.com

[ 02 -- PROJECTS ]

These are projects I built to solve problems I actually faced or to train myself on technologies and techniques I was learning. Each one has a real reason behind it.

CTC :: Call to Contribute -- if you want to contribute to any of these projects, contributions are open and welcome on GitHub.

SUK Shortcuts Unlocking Key : live == project is finished and live to use underdev == currently under development [DLink] == direct link to the resource

Project	Description	Tools	Status	Link
garbage-collector	Lightweight GC for C, C++, Python	C, Make	live	[DLink]
hash-map	Key-value store implementation	C, Make	live	[DLink]
xt3-tree	Tree command clone with colors and file sizes	C, Make	live	[DLink]
finsp	File inspector	Python, C, Make	underdev	[DLink]

[ 03 -- BLOG ]

check my blog on Substack : https://xidruk.substack.com/

[ 04 -- LEARNING ]

These are learning resources I built for myself while studying. I write them down, structure them, and make them public so others can read and benefit from them too. Every resource here started as personal notes and turned into something shareable.

CTC :: Call to Contribute -- if you want to contribute to any of these projects, contributions are open and welcome on GitHub.

SUK Shortcuts Unlocking Key : finished == writing is complete and public underwriting == currently being written [DLink] == direct link to the resource

Title	Core Concepts	Status	Link
Math Quest	A structured quest to understand and learn mathematics from the ground up, foundations, logic, algebra, calculus and beyond	underwriting	[DLink]
Network Programming	Hands-on software side of networking, sockets, protocols, system calls, building and interacting with networked applications in code	underwriting	[DLink]
DSA	Data structures and algorithms, arrays, linked lists, trees, graphs, sorting, searching, complexity analysis	underwriting	[DLink]
Computer Networking	Computer networking from scratch, IP, TCP/UDP, DNS, HTTP, routing, subnetting, OSI model, how the internet actually works	finished	[DLink]

[ 05 -- CURRICULUM ]

Projects and assignments completed as part of formal curricula, schools, universities, and online programs. These are not personal projects, they are structured learning paths with defined objectives.

SUK Shortcuts Unlocking Key : finished == project completed underdev == still in progress [DLink] == direct link to the resource

$> 42 NETWORK: 1337 CODING SCHOOL

1337 is part of the 42 Network, a peer-to-peer programming school with no teachers and no lectures. Everything is project-based. You figure it out or you don't move forward.

Project	Description	Status	Core Learning	Link
ft_irc	IRC server implementation	underdev	networking, sockets, TCP, protocols	[DLink]
inception	Multi-service infrastructure with Docker	underdev	Docker, containers, networking, services	[DLink]
cpp modules 00-04	C++ fundamentals through 5 progressive modules	finished	OOP, classes, inheritance, polymorphism, interfaces	[DLink]
netpractice	Network configuration and subnetting exercises	finished	TCP/IP, subnetting, routing, network config	[DLink]
cub3d	3D game engine using raycasting	finished	raycasting, 3D rendering, math, graphics, C	[DLink]
philosophers	Dining philosophers concurrency problem	finished	threads, mutexes, deadlock, concurrency, C	[DLink]
minishell	Bash-like shell implementation	finished	processes, pipes, signals, parsing, fork, exec	[DLink]
fract-ol	Fractal renderer -- Mandelbrot, Julia sets	finished	complex numbers, graphics, math, optimization	[DLink]
push_swap	Sorting algorithm with limited stack operations	finished	algorithms, sorting, stacks, complexity	[DLink]
minitalk	Process communication using UNIX signals	finished	signals, SIGUSR1, SIGUSR2, IPC, bit manipulation	[DLink]
born2beroot	VM setup and Linux system administration	finished	Linux, VM, partitioning, SSH, firewall, sudo, cron	[DLink]
get_next_line	Read a file line by line using a single fd	finished	file descriptors, static variables, buffers, C	[DLink]
ft_printf	Reimplementation of printf from scratch	finished	variadic functions, parsing, format specifiers, C	[DLink]
libft	Custom C standard library from scratch	finished	C, memory, strings, linked lists, stdlib reimplementation	[DLink]

$> MOOC.FI: UNIVERSITY OF HELSINKI

The University of Helsinki's Department of Computer Science offers free open online courses. I completed two Python courses, an introduction and an advanced track.

Course	Description	Status	Core Learning	Link
Introduction to Programming	First Python course -- basics, logic, data structures	finished	Python, variables, loops, functions, files, OOP basics	[DLink]
Advanced Programming	Second Python course -- deeper OOP, algorithms, functional programming	underdev	OOP, recursion, algorithms, iterators, generators	[DLink]

$> EMSET-P: TECHNICAL SCHOOL

2-year technical formation at EMSET-P. Curriculum data not available for public sharing.

Course	Description	Status	Core Learning	Link
n/a	n/a	n/a	n/a	n/a

$> SULTAN MOULAY SLIMANE UNIVERSITY: PHYSICS

Physics studies at Sultan Moulay Slimane University. Curriculum data not available for public sharing.

Course	Description	Status	Core Learning	Link
n/a	n/a	n/a	n/a	n/a

[ 06 -- LIB ]

RESOURCE NOT FOUND !

[ 07 -- MEDIA ]

Photos, videos, and documentation from events, conferences, and gatherings I've attended. Each entry has its own dedicated page inside the /media directory.

NB: [DLink] == means Direct Link

Title	Description	Date	Page Link
GITEX Africa 2026	Africa's largest tech & startup event — networking, deep tech talks, and innovation showcases.	April 2026	[DLink]