Marcio Name, Msc. Email & Phone Number

• Led a network security project uncovering critical vulnerabilities in 33.3% of microcomputers via Nessus analysis; facilitated immediate Windows security updates to prevent WannaCry ransomware attacks, significantly enhancing overall cyber resilience.• Developed projects with funding agencies for the acquisition of equipment and computational resources for the university and its laboratories, resulting in annual savings of USD 25,000.• Developed LAN network strategies incorporating more than 14 VLANs, EtherChannel, and RSTP, aligned with the university's goals, ensuring infrastructure engineering to support operations and resolve broadcast issues.• Spearheaded the creation of 'ROME' (Root Measure), an open-source software using Java, OpenCV, and JavaCV, which revolutionized root measurement in agronomy by reducing license costs by USD 4,000 and analysis time by 56.65%.• Designed, developed, and simulated more than 30 network projects involving routing and switching in laboratory environments using Cisco Packet Tracer, EVE, and GNS3.• Designed IPv4 addressing standardization with over 16 subnets across university departments and buildings using Cisco and Extreme switches, routers, wireless access points, and computers, resulting in a 60% decrease in network troubleshooting time.• Supervised and trained approximately 100 students per semester in Cisco and Extreme devices, emphasizing training, performance evaluation, and goal setting, specifically on the RIP, EIGRP, OSPF, and IS-IS routing protocols.• Managed methodologies to improve the university's network performance and security, including implementing cybersecurity policies, configuring traffic monitoring tools like Nagios and Wireshark, and resolving performance issues.• Developed 2 computer programs and algorithms for digital image enhancement. Implemented computer programs and protocols for root assessment technology in agricultural engineering.

• Implemented, based on experience, Java programming and Cisco Packet Tracer, GNS3, EVE simulations in the Network Services and Computer Networks courses, leading to improved student understanding of networking concepts and a 100% course pass rate.• Trained students to manage network infrastructure bandwidth with iperf for network performance measurement and tuning.• Initiated and facilitated the secure upgrade of the institute's email server by implementing HTTPS by configuring a Root CA and digital certificate, encrypting data transmission, and securing user credentials against unauthorized access.• Taught 6 courses using the Cisco Packet Tracer simulator, virtual machines with WMWare ESX Hypervisor and VirtualBox and sniffing with Wireshark.• Taught subjects such as Computer Networks, Database, Learning Project, Special Topics in IT - I (HTML and PHP), Special Topics in IT - II, Project Management in Information Technology (Routing Protocols), Systems Analysis and Design, Free Software, WEB Application Development, Manipulating Excel Spreadsheets.

• Led a team of 9 professionals, doubling server capacity and increasing microcomputer resources by 114.28%, significantly enhancing the administrative and academic capabilities of 210 professors and technicians.• Developed 8 software projects, resolved around 98% of the 300 annual user support inquiries and oversaw the strategic replacement of 150+ microcomputers through outsourcing initiatives, saving USD 30,000 annually.• Participated in the design and implementation of network security policies such as Netfilter/IPtables and Fail2Ban for SSH protection.• Maintained comprehensive documentation of network configurations, changes, and troubleshooting, ensuring effective communication among team members regarding network and IT projects and initiatives.• Provided technical support to users and resolved issues related to Windows operations, ensuring minimal downtime and maximum productivity.• Managed IT teams to plan and execute systems maintenance activities, including software updates, patch management, and backup procedures.• Documented system configurations, procedures, and troubleshooting steps to create comprehensive documentation for future reference and knowledge sharing.• Oversaw and led the IT team, including recruitment, training, performance evaluation, and career development, fostering a culture of collaboration and continuous improvement in IT engineering.• Supervised the maintenance and support of IT infrastructure, including networks, servers, storage systems, databases, and hardware and software resources, focusing on engineering excellence.• Effectively communicated IT initiatives to the Director, providing strategic perspectives on the role of engineering technology in achieving organizational goals.• Led a team that managed Windows systems, including Active Directory, GPO, and Windows Server administration tasks.• Coordinated diverse functions such as server administration with SAMBA, web development in JSF/PHP, and JAVA programming.

• Implemented a Proxy server, which curtailed 99.00% of illicit content access in the computer labs, preserving bandwidth for educational use, and managed and troubleshot WLAN controllers ensuring uptime of 99.99% in the University’s sites.• Led, designed, and managed a pivotal network project that increased the internet capacity by 1,000% and optimized structure by implementing 13 VLANs, OSPF, and RSTP, significantly improving internet speed and network security.• Crafted IPv4 addressing optimization using VLSM and VLAN, creating 12 subnets across university departments and buildings on network assets, resulting in a 90% decrease in network performance and broadcast issues.• Provided technical support, resolving connectivity problems and addressing network issues by implementing a ticketing system, resulting in a 75% reduction in resolution time.• Configured and maintained network infrastructure including 3 routers, 28 switches, and 2 firewalls, ensuring seamless network security and connectivity engineering.• Performed configuration adjustments on over 20 Cisco and Extreme switches, including EtherChannel configuration for link aggregation, to ensure optimal performance.• Managed routine maintenance tasks, including configuring load balancing with ha-Proxy, to uphold network reliability and performance standards.• Utilized extensive experience in Linux administration to streamline server management processes and enhance operational efficiency across more than 30 servers, resulting in an 80% Y-o-Y increase.• Implemented and managed security measures such as firewalls, secure SSH with Fail2ban, and ACLs to safeguard the network from unauthorized access and maintained documentation of network configurations.• Acted as the primary administrator for Linux systems, configuring bridges and VLANs with the 802.1q protocol on Linux Red Hat and Debian for trunking to switches and troubleshooting issues.

• Migrated physical servers to VMware ESXi-based private cloud infrastructure, reducing hardware costs by 95% and increasing IT service sales by 50%.• Implemented an on-premises private cloud that decreased the data center footprint and the operational costs, saving USD 140,000 and enhancing server capacity by 62.5%.• Administered around 80 Linux-based servers, including those running Red Hat Enterprise Linux, ensuring optimal performance and reliability.• Configured and maintained network security systems, including 2 servers with Firewall IPtables, 12 VPNs Client-to-Site and Site-to-Site, user access control, SELinux, and regular security updates, while overseeing web servers and Proxy Squid for robust client support.• Installed and configured more than 20 mail servers with Qmail and Postfix.• Managed Apache+PHP and Adobe Coldfusion web services and implemented ProFTPD file transfer server to optimize the transition from development to production environments. Configured CVS/SVN as a version control system.• Contributed to the design and implementation of network architecture to support organizational growth and scalability.• Managed the installation and deployment of new Red Hat servers, ensuring proper setup and configuration according to organizational standards.• Configured 2 servers with NAGIOS to network monitoring and managed 1 Cisco 2800 ISR router to connect to the ISP.• Facilitated effective communication among customers regarding network updates and changes.• Configured various system components and services on Red Hat and Debian servers, such as Apache, Qmail, Squid, DHCP, and SSH server.• Managed routine maintenance tasks, including configuring load balancing between 2 ISP links, to uphold network reliability and performance standards.

Master Of Science - Ms, Applied Computing, 3.92

Activities and Societies: Research Groups, Seminars, Event Organizer, Internships and Work Experiences, Events, and Conferences.

Graduate Diploma, Computer Networks, 3.54

Activities and Societies: Research Group, Seminars, Event Organizer.Graduate Diploma in Computer Networks with a final project in Computer.

Technologist Diploma, Information Systems, 3.43

Activities and Societies: Research Groups, Seminars, Event Organizer, Internships and Work Experiences, Events.

Bachelor'S Degree, Business Administration

Activities and Societies: Case Studies in Business, Company Visits, Consulting Projects, Internships and Work Experiences, Management.