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Ronaldo Zacarias Afonso Positions Network and System Administrator / Security Analyst / Programmer Analyst Academic Degree From 1999 to 2003 – Bachelor's degree in Computer Science Certification Linux Professional Institute Level 1 Skills Advanced knowledge in Linux, network administration and software development. Professional Experience - Cyclades Position: Software Engineer Period: 06/23/2004 until now Activities: Working in the R&D department of Cyclades, I am the main software engineer responsable for the Cyclades Linux routers. My rotine tasks consist of development of new features, bug fixes and research about WAN and LAN networks, programming tools and operating systems topics. - Completo Tecnologia Position: Network Administrator Period: 09/01/2001 to 06/20/2004 Activities: Responsible for the development of an administration system for Linux´s servers in Perl and Bash. Administration of TCP/IP networks, installation, management and configuration of e-mail, DNS, proxy, file servers and firewall. - Nettrends Sistemas de Internet Position: Trainee – PHP Programmer Period: from 04/02/2001 to 07/09/2001 Activities: Development of web systems using PHP, MySQL database and Apache web server. Idioms English Spanish Specific Abilities Experience and a great knowledge about hardware architecture, electronics, computer network, operating system concepts, security, cryptography, Linux, Windows, AIX, Cisco IOS, TCP/IP, PPP, X.25, Frame Relay, Wireless (802.11), routing protocols, VPN, DNS, Sendmail, Apache, Zope, Squid, Samba, Bash, firewall and programming languages like Assembly, C/C++, Perl, Python, HTML, PHP, Delphi, Pascal and Java Script.