Marcus Duarte

- Lead the team in charge of upgrading, monitoring, integrate and maintaining the Huawei SDP platform (E2E business solution); - Work as a Senior Support for this team, providing documentation, guidance and training; - Performing functional E2E tests on SOA platform, analyze output and open bugs; - Responsible to analyze customer requirements (Telefonica) and work together with Huawei RND to deliver it; - Understand service life cycle, integration, changes introduced by patches, releases, test sets.

- Operation and Maintenance Huawei SDP platform applications in Telefonica; - Linux and network support, package analyze and monitoring 24/7; - Install, support and maintenance Huawei hardware (storage, ATAE, blade); - Upgrade DB and Webserver applications and supporting QA Team functional tests; - Upgrade and support Linux OS applications; - Deep troubleshooting and analyze whole E2E flows; - Shell script development for task automation, data processing and reports; - Oracle DB SQL operation.

Configuring, support and maintenance for IBM Software ITIM and ITM and related software in EBX and Petrobras networks.

- IT consultant in the implementation of infrastructure, security and network computer projects in hybrid environments. - Support and implementation of network projects using Cisco, Linux, VMware and Microsoft technologies. - Customer and business requirements analysis for network solutions implementation.

- Implementation and management of network gateways with firewall, proxy and QoS application using iptables, HTB, squid and dansguardian; - Network administration of Linux VPN, FTP, Apache, DNS, DHCP and Samba; - Implementation Bacula backup; - Corporate network Windows Administration with FS (Windows), DHCP, Active Directory, WSUS, IIS; - Bash Shell and Perl script development to task automation; - Xen Citrix Server implementation and administration; - Network monitoring and diagnostics with Zabbix.

- Network administration of Linux services such as VPN, FTP, SMTP (Postfix), DNS, Tomcat, JBoss, Apache HA cluster; - Deployment of VMWare ESXi hypervisor, vSphere and VM hosts; - Implement Linux LB and HA solution for Apache and Posfix services; - Implement internet network firewall and manage company Proxy (iptables + squid); - MySQL and LAMP administration within strict security standards; - Network monitoring and diagnostics with Zabbix.

- I worked in an ISP, which provides internet access with the main focus in corporative network. - I was responsible to install, upgrade and maintain SMTP (postfix), APACHE, MySQL, samba, FTP, VPN, firewall (iptables plus CBQ) servers. - Understanding customer requirement and deliver a solution. - Network operator and second level troubleshooting. - To manage and make VMs with XEN servers.