Gianluca Cherubini

I am a Senior Linux System Administrator working on physical and virtual environments with VMWare ESX 6.7.  My area of expertise is solving 2nd and 3rd level issues over Linux operations (RHEL/CentOS/SuSE/Debian), NAS/SAN Storage management (DellEMC/Hitachi Vantara), ID management (Microsoft Active Directory/OpenLDAP) and SAS Software (SAS Financial Management, SAS Viya).

I was a Senior Linux System Administrator working in a group of people as a Big-Data Engineer. I was working with Ambari, HortonWorks, Grafana, Apache Hadoop, HDFS, Spark, Kafka, Hive, HBase, Map Reduce/Yarn, Aster Teradata in a IBM AIX 6 and SLES 11 environment.

I was responsible for a mid-scale IBM/Lenovo/HP/Dell data centre in Rome (up to 300 nodes) with Red Hat Enterprise Linux 6.x. and 7.x. This project is called SOC 2.0, the evolution of the one I participated in October 2014. I work side by side with big data scientists, development and database teams to deploy 2^ndand 3^rdlevel support for Cloudera Manager, Apache Hadoop, Apache Spark, YARN, Impala, Kudu, SAS Enterprise Guide, SAS Innovation Hub, SAS Visual Analytics and Linux operations and distributed computing.

I was in a group of Unix/Linux system administrators in a RHEL, Solaris and AIX environment for two mid-range ICCREA/ICBP data centers in Milan (up to 250 and 200 nodes)​. My main tasks consistedin installation, configuration, troubleshooting and change management. I was also in charge for monitoring system tuning and troubleshooting. Main support areas included Red Hat Virtualization, VMWare, Citrix, Clusters, Automation with Ansible and Monitoring with Nagios.

I was in a small group of Unix/Linux system administrators in a HP/UX, SLES, RHEL and CentOS environment​ for a small-scale data centre (less than 100 nodes). My main tasks consistedin installation, configuration, collecting data metrics for predictive analysis using Cloudera and Hadoop/Kafka/Cassandra. I was also in charge for monitoring system tuning and troubleshooting. I deployed a master-master configuration LDAP Cluster. Main support areas include Big Data, Clusters, High Availability, Load Balancing and Monitoring with Nagios and Nagios-based products (M3).

I was in a small group of Unix/Linux system administrators for a mid-scale IBM data centre (up to 200 nodes) in Rome with Red Hat Enterprise Linux 6.x. The project is called SOC and I worked side by side with development and database teams to troubleshoot and deploy 2^ndlevel support for IBM Netezza, Apache Hadoop, Cloudera Manager, SAS Data Integration, SAS Enterprise Business Intelligence, SAS Visual Analytics and Linux operations for distributed computing and big data.

I was in a small group of Unix/Linux system administrators for three small-scale Unix and Linux-based data centres (less than 100 nodes): hospital data centre, university data centre and GE Health Care hosted data centre (RIS and PACS applications for diagnostic per images). My team and I provided 24/7 support and monitoring with Nagios 3 on a Debian 5.x. The data centres were based on CentOS 6 cluster system and Sun Solaris 9/Sun Cluster 3.2 environments. This provided internal email, internet and intranet web sites, as GE Health Care Applications as well. I was also responsible for LDAP-based authentication server, Squid proxy servers (both for hospital and university users) and backup system with Amanda over IBM Total Storage TS3200 tape library.

I worked as an IBM AIX system administrator in a team of ten people, providing 24/7 support and monitoring for a large-scale environment (up to 300 nodes). My main tasks consisted in managing and tuning Logical Partitions (LPARs) of IBM Power6 system, Logical Volume Management with LVM and Veritas Volume Manager, Cluster Management with Veritas Cluster Server. Allocation of system resources with VIOS restricted shell commands, LUN allocation, filesystems resize, resource group monitoring and switching.

I deployed a centralized LDAP-based user authentication signal sign-on for internal users, on-site and over VPN. I achieved that with a Sun Solaris 9 / Sun Cluster 3.1 and Red Hat 5 cluster systems, using couples of load-balanced Apache and Tomcat web application servers. In addition, I arranged a training class on Linux based operating system for end users.

I worked as an AIX and Solaris System administrator in a team of six people, providing 24/7 support and monitoring for a small-scale data center (less than 100 nodes). My main tasks consisted in monitoring systems and troubleshoot with on-site ticketing system. I provided a second level support. Main support areas included Sun Solaris 9, IBM AIX 4/5, IBM WebSphere, Oracle 9i, Nagios Monitoring, CPU loads, network outages and filesystem resize.

I developed and deployed a shell-script based monitoring application to collect data such as CPU load, filesystem occupation, database availability, network outages and more customized SMTP based controls in a small-scale environment (up to 100 nodes) including Solaris 8 workstations, Solaris 8 servers and Red Hat Linux. The results were formatted with HTML format and published on a web server. This system included email-based alerts.

I worked as a Solaris system administrator in a team of twenty people, providing 24/7 support for HA systems in a mid-scale environment (up to 200 nodes). My team rolled-out the i-mode web portal mobile platform (a NTT DoCoMo GPRS-based technology). We were involved in installation and maintenance of ULTRA Sparc workstations and servers, software releases and up-to-date for Java Web Applications, HTML and cHTML pages maintenance.

I worked as a Solaris System administrator in a team of ten people, providing 24/7 support and monitoring for satellite communications and network broadcast TV systems. My main tasks consisted in monitoring systems and troubleshooting, user creation and deletion, user disk quota, escalation of SLA incident to the department involved, using Sun Solaris 8 ULTRA Sparc.

I provided help desk support for Windows 3.11, Windows 95, Windows NT 4 and Novell NetWare. Assembling PC-IBM machines, spare parts, installation, troubleshooting and training for users, deploy Ghost images, troubleshooting AS/400 Terminal Clients.

Bachelor’s degree in Language, Cultures, Literature, Translation (English and German), particularly focused on cultural institutions and cooperation between EU and extra EU countries.

Computer Science High School Diploma achieved with a 50/60 mark. Main skills: MS-DOS 5 and Windows 3.11 for Workgroups; BASIC, COBOL and SQL; Microsoft Office; Borland DB IV.