Jakub Skrzynecki

Swapping the factory radio for a 2DIN head unit in a Hyundai Coupé GK FL leaves no room for the original multi-gauge. It physically stops fitting. I built a replacement around an ESP32 and a 1.28-inch round IPS display.

Battery voltage is a weighted average of the ADC reading and the CAN bus, coolant temperature comes from the Siemens SIMK43 ECU, and fuel use is calculated as L/100 km on the move and L/h at idle. The LVGL interface runs at 60 FPS and switches to night mode by itself.

I wanted to track fuel costs and service intervals for several cars at once without pushing the data to someone else's server. Everything stays in a local SQLite database and the app works with no connection at all.

Receipts are scanned with Google ML Kit OCR, service reminders are worked out in the app, and consumption charts are drawn with fl_chart. Written in Flutter, structured along Clean Architecture lines.

I built this project to work through the complete delivery path for a real service in my Proxmox homelab. The application is deliberately small: FastAPI, MongoDB and Docker. GitHub Actions tests and scans it, publishes a full-SHA image to GHCR, and a self-hosted runner deploys it to K3s with Terraform.

The work went beyond writing manifests. I fixed MongoDB AVX exposure in the VM, delayed K3s PVC binding, Tailscale Funnel routing through Traefik, BASE_PATH behind a reverse proxy, and Trivy findings in the runtime image. NetworkPolicy, health probes and post-deployment smoke tests close the delivery loop.

• Risk analysis and attack methodology for file upload endpoints
• Penetration testing using Wireshark, Node.js, PHP, Nginx

• Comprehensive security testing of a web application using OWASP ZAP
• Identified vulnerabilities: missing CSRF tokens, CSP policy, and CORS configuration

• Attack simulation: ARP Poisoning, DNS Spoofing, SSLStrip
• Isolated lab environment using Bettercap and BEEF

• Single Sign-On deployment in Azure Cloud environment
• Service integration: Portainer (OAuth2) + Nextcloud (SAML)

• Content discovery, parameter mining, virtual host enumeration
• Comparative tool analysis: ffuf vs wfuzz vs DirBuster

• Advanced behavioural authentication based on keystroke dynamics
• Effectiveness tests with AUC metric reaching ~0.81
• Comparative analysis of two classification algorithms

• Analysis of how AI can support early detection and prediction of security incidents in SOC environments
• Focus on event correlation, alert prioritisation, anomaly detection, and incident response acceleration

• Structured overview of threats caused by malicious software in modern IT environments
• Discussion of attack vectors, system impact, detection challenges, and defensive controls

• Comparison of AgilePM, PRINCE2 Agile, Hybrid Waterfall, and Disciplined Agile approaches
• Evaluation of governance, delivery flexibility, documentation level, and implementation context

• Focused comparison of hybrid project-management frameworks used in technology projects
• Highlights differences in roles, control points, iteration planning, and change management