JHVIW

Rick’s Portfolio

Welcome to my portfolio! This website showcases my projects, skills, research, and expertise in software engineering, cybersecurity, and healthcare IT.

📌 Table of Contents

• Introduction
• Website Structure
• Projects
• Skills & Expertise
• Security Research
• FHIR & Healthcare IT
• CS:GO Skin Pricing
• Contact
• Deployment & Automation
• License

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📖 Introduction

I am Rick van Iwaarden, a software engineer with a passion for cybersecurity, healthcare IT, and digital transformation. My experience spans full-stack development, cloud computing, API design, and security research.

This portfolio includes:

• Projects: Open-source tools, web applications, and API integrations.
• Skills: Technologies and frameworks I specialize in.
• Security Research: Ethical research on software vulnerabilities.
• Healthcare IT: My work on FHIR and Laboratory Information Systems.
• CS:GO Skin Pricing: Automated data retrieval for CSFloat and Skinport.

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📂 Website Structure

📁 jhviw-jhviw.github.io/
│── 📁 data/                  # JSON files storing CS:GO skin price data
│── 📁 portfolio/              # Main portfolio pages
│   │── contact.html
│   │── fhir.html
│   │── index.html
│   │── projects.html
│   │── research.html
│   │── skills.html
│   │── vertrektijden.html     # Live public transport times (NS API)
│   │── 📁 images/             # Portfolio images
│── 📁 research/               # Security research articles
│   │── cve_research.html
│   │── script.js
│   │── styles.css
│   │── 📁 images/
│── 📁 scripts/                # Backend scripts
│   │── update-prices.js       # Fetches CS:GO skin prices from APIs
│── 📁 .github/                # GitHub Actions workflow for automation
│   │── 📁 workflows/
│   │   │── update-prices.yml
│── portfolio_styles.css       # Global styles
│── portfolio_script.js        # Interactive animations

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🚀 Projects

My portfolio features a variety of projects across different domains:

🔹 Secret Santa Bot

A Discord & Steam bot for automated Secret Santa pairings with:

• Steam Trade Offer integration
• Discord event management
• 2FA authentication for secure transactions

🔗 GitHub Repository

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🔹 CS2 External ESP (Proof of Concept)

A game overlay that tracks players in CS2 using:

• C++
• Windows API
• GDI+ for rendering

🔗 GitHub Repository

⚠ Disclaimer: Research project focused on understanding game security.

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🔹 OV Vertrektijden (Live Dutch Public Transport Tracker)

A web app that displays real-time train and bus departures using:

• NS API (Dutch Railways)
• OVAPI (Public Transport)
• JavaScript, TailwindCSS

🔗 GitHub Repository

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🔹 FHIR $lastn-endpoint for Laboratory Information Systems

Developed a FHIR R4-compliant API for handling laboratory results:

• Supports LOINC, SNOMED, UCUM
• Optimized for 500+ concurrent requests
• Adheres to NEN 7513 logging standards

🔗 [GitHub Repository - Private]

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🛠 Skills & Expertise

My core technical skills include:

💻 Programming Languages

• C#, Python, JavaScript/TypeScript
• C++, SQL, Bash

🖥 Backend & API Development

• ASP.NET Core, Node.js, Flask
• GraphQL, RESTful APIs, FHIR

🛡 Security & Cybersecurity

• Reverse engineering, malware analysis
• Network security, ethical hacking
• Memory manipulation research

☁ Cloud & DevOps

• Microsoft Azure, Google Cloud
• Docker, CI/CD Pipelines, GitHub Actions

🔬 Healthcare IT

• FHIR R4, HL7 v2/v3
• Interoperability solutions for LIS

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🔍 Security Research

I conduct ethical vulnerability research in software security. Some notable research includes:

🔹 CVE-2021-30481: Steam RCON Vulnerability

• Reverse-engineered Steam RCON
• Developed a proof-of-concept exploit
• Proposed security mitigations

🔗 Read More

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🔹 Wallhack Detection & Memory Analysis

• Developed a proof-of-concept wallhack
• Analyzed memory injection techniques
• Proposed anti-cheat detection methods

🔗 Read More

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🏥 FHIR & Healthcare IT

My experience with Fast Healthcare Interoperability Resources (FHIR) includes:

🔹 FHIR $lastn-endpoint

• Optimized REST API for lab results
• LOINC, SNOMED, UCUM mapping
• NEN 7513-compliant logging

🔗 Read More

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🎮 CS:GO Skin Pricing

This project automates the retrieval of CS:GO skin market prices.

🔹 Automated Price Fetching

• Fetches price data from CSFloat & Skinport
• Runs daily via GitHub Actions
• Stores data in JSON format

🔹 Workflow Automation

.github/workflows/update-prices.yml

• Runs daily at 00:00 UTC
• Commits updated price data to repository

🔗 Script - update-prices.js

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📬 Contact

Feel free to reach out via the contact form on my portfolio.

🔗 Contact Page

📧 Alternatively, email me at:

saltssecurity@proton.me

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🚀 Deployment & Automation

This portfolio is hosted using GitHub Pages with automated updates via GitHub Actions.

• Price update automation (update-prices.js runs daily)
• Continuous integration for content changes

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📝 License

This project is licensed under the MIT License.

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📢 Thank you for visiting my portfolio! 🚀

If you find any of my projects useful, feel free to star ⭐ them on GitHub