Rafa Z.

Experienced ICT Specialist | System Administrator | Software Developer | NinjaTrader Vendor With over two decades of experience in IT infrastructure management, I have been responsible for maintaining and optimizing enterprise networks, ensuring seamless operations across both LAN and WAN environments. My expertise spans system administration, network security, software development, algorithmic trading, and IT project management. Key Expertise: • Network Administration: Managed a complex IT infrastructure, including a LAN with 10 servers (Windows 2000/2003 Server, Unix 5.X.X & 7.X.X, Linux) and 300 Windows XP/Linux workstations. Designed and maintained a secure VPN IPsec-based WAN system connecting 15 remote locations over 500 kilometers, utilizing cryptographic units (HC) and Cisco 28XX routers. • Software & Algorithm Development: Developed various applications using PHP, SQL, C++, and C# (.NET). Created a large-scale multi-user database system (MySQL + PHP + AJAX), a graphical network analysis tool, and automated backup systems using NFS and SSH with DDS cassettes. • NinjaTrader Vendor & Trading Systems Development: As an approved NinjaTrader 8 vendor, I specialize in developing custom indicators and algorithmic trading strategies. My work focuses on enhancing trading performance through technical analysis tools, automated strategies, and market analytics. • Network Security & Infrastructure: Configured and managed firewalls (iptables, htb/cbq-based), as well as IIS and Apache-based web servers and databases. Implemented security measures to protect classified information. • Project & Team Management: Currently serving as an ICT Development Department Manager, overseeing IT strategies, system development, and security compliance. Certifications & Security Clearance: • Top Secret Security Clearance • Certified in Protection of Classified Information in ICT Systems and Networks – Internal Security Agency • PRINCE2 Professional Certification – Project Management I am passionate about leveraging my technical and managerial expertise to develop innovative IT and trading solutions that enhance security, efficiency, and performance.