11/10/2026 updated
100 % available
Cybersecurity & Software Developer | Security Testing, Custom Software, Web Apps & Automation
Istanbul, Turkey
Only remote
About me
I build security-focused software and practical solutions for businesses. My work spans cybersecurity, custom applications, web development, and automation. I combine hands-on engineering, careful testing, and clear communication to turn technical requirements into reliable results.
Software ApplicationsAutomationSecurity ControlsLinuxWeb DevelopmentNetwork SecuritySoftware ArchitectureSoftware Technical ReviewVulnerability AssessmentWeb Applications
I help businesses solve technical problems through security-focused software development, custom applications and practical automation. My work combines hands-on engineering with a structured approach to debugging, testing and delivering solutions that fit the actual requirements.
Cybersecurity & Security Engineering
Authorized security testing and vulnerability analysis, web application security, HTTP request/response inspection, security configuration reviews, network traffic analysis and remediation support. Tools and technologies include Burp Suite, Wireshark, nDPI, Zeek, TCP/IP, DNS and TLS. I also develop security research and diagnostic tools.
Custom Software & Desktop Development
Python and Rust development, Windows desktop applications with PySide6/Qt, Tauri 2 architecture, modular application design, debugging, refactoring, testing and improvements to existing software.
Web Development & API Integration
React, TypeScript, frontend interfaces, HTTP/REST APIs, API integration, SQLite and data processing. I can work on specific components, troubleshoot existing functionality or help build new solutions.
Automation, Linux & Systems
Python scripts, workflow automation, Windows/PowerShell tooling, Linux and WSL environments, system configuration, network troubleshooting and Git/GitHub workflows.
Selected Engineering Projects
Custom VPN Platform: Built a Windows VPN desktop client using Python, PySide6 and OpenVPN with a self-managed cloud server, connection controls and traffic analysis. Version 1.0.0 reached a stable milestone; advanced network protection and Rust/TLS transport work continue in R&D.
OSRE (Offensive Security Research Engine): Developing a modular desktop platform for authorized security research with Rust, Tauri 2, React, TypeScript and SQLite. Work includes passive reconnaissance, HTTP analysis, research context and controlled testing. The project is still in development.
How I Work
I clarify scope and expected outcomes, choose a practical technical approach, review and test implementations, and communicate progress and limitations clearly. I use modern development tools, including AI-assisted workflows when appropriate and permitted, while verifying the results.
Available for remote collaboration in German and English.
Experience
Professional experience0 - 5 years
Freelancer since2026
Languages
GermanNative speakerEnglishGoodTurkishGood
Project history
OSRE – Offensive Security Research Engine
Independently designing and developing OSRE (Offensive Security Research Engine), a Windows desktop platform for authorized security research. The application combines a Rust core with Tauri 2, React, TypeScript and SQLite.
Key Responsibilities & Achievements:
Designed the modular architecture, research context models, scope/permission checks, typed desktop interfaces and persistent data structures.
Developed foundational components for passive reconnaissance, asset discovery and intelligence, HTTP proxy workflows and traffic inspection.
Implemented early multi-tab Repeater functionality, controlled security testing and bounded fuzzing with traceable results.
Built initial evidence, analysis and findings models, including source references, revision history and integrity checks.
Designed and developed research workspaces, navigation and a dark UI; a comprehensive redesign is ongoing.
Used Git, automated tests and staged validation to manage implementation and verify individual components.
Project Status:
OSRE remains in active development. Several core components are implemented, while the full redesign, advanced scanners, automation and native end-to-end verification are still incomplete.
Custom VPN Platform – Windows Desktop Client (v1.0.0)
Independently designed and developed the first stable version (v1.0.0) of a Windows VPN application, combining a custom desktop client with self-managed cloud infrastructure.
Key Responsibilities & Achievements:
Built the Windows desktop client using Python and PySide6, integrating OpenVPN connection controls, server selection, connection monitoring, traffic statistics, and application logs.
Set up and integrated a self-managed VPN server on Oracle Cloud, including the required client-server configuration.
Implemented Windows Firewall-based kill switch controls and integrated OpenVPN DNS protection settings.
Developed application settings, connection-state handling, error reporting, and session recovery mechanisms.
Structured the codebase, managed development with Git, and tested core functionality before reaching the v1.0.0 milestone.
Project Outcome:
Completed a functional Windows VPN client with its own server infrastructure and a stable initial version. The platform remains under active development, with advanced traffic analysis and experimental Rust/TLS transport components developed separately in subsequent R&D stages.