Software Engineer

Xander Steyn

Quietly building the tools you’ll rely on.

5+ Years Experience
Cape Town, South Africa

About Me

With over five years of experience in ethical hacking and cybersecurity, I transitioned into software engineering to focus on building reliable and effective systems. This background enables me to develop secure, scalable, and maintainable applications that address real-world needs.

My Toolkit

HTML
CSS
JavaScript
Python
C++
SQL
Bash
PowerShell

Experience

Systems Engineer

Optix Solutions
May 2022 — Oct 2024 2 years 6 months

Built a custom Windows deployment and configuration platform focused on speed, efficiency, and user control through deep Windows internals knowledge and automation.

  • Created a stripped-down Windows ISO by removing non-essential components, reducing system overhead.
  • Developed a post-install app for user configuration and selective app installs, streamlining setup.
  • Automated system utilities, including a reliable way to uninstall embedded Microsoft Edge bypassing OS restrictions.
  • Deepened expertise in Windows internals, scripting, automation, and user-centric design.

Education

Software Engineering

HyperionDev
Track my progress here

An intensive full-stack course focused on foundational programming, software design, databases, web development, and deployment workflows.

  • Developed Python skills including control flow, OOP, recursion, and error handling.
  • Applied core data structures, algorithms, and debugging techniques.
  • Built database-backed applications and gained backend integration experience.
  • Covered frontend essentials like HTML, CSS, Bootstrap, and Django integration.
  • Utilized version control with Git, deployment with Docker, and wrote project documentation.

CS50x

Harvard University
Grade: TBA

A deep dive into computer science fundamentals using modern and low-level languages, including C, Python, SQL, and JavaScript. Topics cover abstraction, algorithms, data structures, security, and web development.

  • Developed strong understanding of algorithms, memory management, data structures, debugging, and software design.
  • Completed nine problem sets inspired by cryptography, forensics, finance, gaming, and biology.
  • Built a final project combining frontend and backend technologies using languages learned during the course.

Certificates

Saylor Academy

CS401 Operating Systems

Grade: 90%
Kaggle

Advanced SQL

Grade: None

Achievements

Clash of Code Contest

CodinGame

Placed 76th out of 12,619 participants by demonstrating exceptional speed and algorithmic problem-solving under pressure.

Cybersecurity Lecturer

Northern Technical University

Delivered a remote guest lecture on Intrusion Detection Systems (IDS) to first-year cybersecurity students, including a live Q&A.

Projects

Clarity AI project - dark mode interface
Clarity AI project - light mode interface

Clarity

An AI-powered platform for personalized, therapeutic conversations to ease stress and process emotions.

HTML CSS JavaScript AI
Devora platform course listing interface
Devora login screen
Devora signup screen

Devora

An online platform offering IT courses and certifications, designed for flexible, self-paced learning.

HTML CSS JavaScript MongoDB
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Resume Coming Soon

My comprehensive resume will be available for download upon completion of my current studies.

Available Q1 2026