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System Administrator Engineer

Raleigh, North Carolina, United States
December 17, 2018

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Darin Denio


Raleigh / Durham NC

Hortonworks Certified Hadoop Administrator


Seeking a responsible and challenging position as a Sr. Hadoop Administrator.


Hadoop: Hortonworks HDP, HDFS, Hive,Yarn, MapReduce, Oozie, Spark, NIFI, Kerberos, Ranger, Kafka, Zookeeper, Solr, Zeppelin, CloudBreak and Ambari. Hadoop security including Kerberos and LDAP deployment.

Redhat Linux, Suse Linux, Oracle Linux, CentOS, Windows, Solaris

Puppet, Foreman, SCCM, Satellite, Veeam Backup

Imperva SecureSphere Gateway, Pala Alto Firewalls, Ping One, Ping Federate, SAML and SSO

Amazon EC2 and OpenStack


Nov 2017 – Current Metlife

Lead DBA / Hadoop Administrator

Supported IBM BigInsights and Hortonworks Hadoop Clusters. Installed and upgraded clusters in PROD, QA, DEV and DR. Administered SOLR, HBASE, HDFS and SPARK. Setup Kerberos security and SSL. Installed HDF NIFI cluster with SSL and Ranger. Setup failover Ambari Server with Replicated Postgres DB. Setup LDAP and authentication. Administered users and group permissions. Administered Talena Backup environment for Hadoop. Setup Ganglia and Ambari Metrics monitoring and Dashboards. Worked with Hortonworks and IBM on all aspects of support. Configured new resources and hosts for horizontal scaling. Helped with Breakfix support. Installed Kafka and Flume cluster. Configured Flume jobs.

Aug 2017 – Nov 2017 BB&T

Hadoop Administrator

Helped plan and implement Cloudera 5.10 cluster in Test and Production. Installed Cloudera Manager, Hadoop Cluster, SSL Security including Host Level, Data in-motion SSL and Data at rest Encryption. Setup Sentry Rules and ACL’s. Replicated Postgres database. Added AD groups via Centrify to Linux hosts and Cloudera Manager and Senty. Prepared OS for installations including bash scripts to manage package installation. Setup monitoring and Alerting via CM. Created keystores and truststores with Java SSL tools. Configured Kerberos and LDAP.

May 2016 – Current Hortonworks Inc

Technical Support Engineer

Provided technical support for Hortonworks HDP and HDF products. Direct trouble shooting for all Hortonworks customers on HDFS, Yarn, MapReduce, Hive, Ooxie, Spark, Kerberos, LDAP, Zeppelin, Ranger, Kafka, CloudBreak and NIFI. Worked with Engineering teams to provide bugfix solutions to all software and java related issues. Provided Weekend oncall support and upgrade support. Created Knowledge Base and Hortonworks Community Connection articles (documentation).

Jan 2015 – May 2016 Imperva Inc

Senior System Administrator

Unix Administrator. Installed Cloudera Manager 5.3. Upgraded 4 VMWare ESXi hosts to 5.5. Upgraded Ping Federate to 7.3 for SAML and SSO environment. Maintained Ping One users and applications. Built and configure large scale backup server for Unix MainFrame using OpenDeDup. Installed Oracle 11i on Solaris and Linux hosts. Investigated new CMS applications and was the Tech Lead for CMS project. Installed and configured Puppet Enterprise server. Implemented Hadoop cluster for R&D. Upgraded Ping Federate to 7.3 and 8.0. Managed Veeam Backups for VMWare hosts. Installed and managed Oracle, MySQL, MSSQL, MariaDB, Informix for R&D team. Installed and managed CentOS Satellite Patching servers. Managed Foreman servers (Puppet). All aspects of RedHat and CentOS automation. Deployed and managed Hortonworks HDP clusters for QA and DEV teams.

April 2011 – Dec 2014 eBay Corp

Unix System Engineer (Austin Team Lead)

Worked as a 24/7 NOC System Engineer for production site operations. Monitored and supported large scale environment including over 40,000 Linux and Solaris systems in 4 main data centers. Managed Veritas VCS, Oracle and NetApp systems. Supported Cloudera and Hortonworks Hadoop clusters with over 2000 node systems in 6 sites. Provides scripting and automation. Provided in depth knowledge of Linux OS and kernel issues, file system cleanup and application installations. Provided trouble shooting and escalations of network and SAN related issues. Worked directly with Oracle support engineers as well as Dell and HP. Worked on HP Blade systems. Trouble shooting of kernel level OS issues. Installed system packages and new software packages. Updated Production Unix procedural documentation and process development. Worked with Apache Java (Tomcat) applications providing support and system administration to live production issues. Provided real time monitoring and trouble shooting skills on live production site issues and events. Worked on eBay’s infamous Cassini Search engine as well as a previous iteration. Managed over 300 NetApp filers including C mode filer clusters. Puppet system management.

Team Lead Responsibilities: Trained new candidates. Managed scheduling. Setup and managed team meetings including cross team communications. Team communications to upper management. Provided technical training to team on Hadoop environment.

Aug 2009 – Sep 2011 Rand Corporation

Sr System Administrator

Managed about 250 Unix systems including Red Hat Linux and Sun Solaris and also managed Windows 2003 servers physical and virtual. Deployed production systems. Managed analytic computing software SAS 9.2 for programmers group. Tech lead for the Backup Discovery project. Implemented new backup infrastructure using Symantec Netbackup/ PureDisk. Managed, installed and upgraded RSA 6.1 systems. Supported Oracle Business Systems which involved the migration of Apache Oasis server to a RHEL5 platform. Configured Apache with LDAP modules. Helped develop Content Atempo Archiving platform. Used Mondo Archiving software for DR purposed. Managed VMWare ESX 4 systems. Helped support Hitachi SAN AMS 2500. Tech Lead for PGP deployment. Installed and configured Triton Disk Array (16TB SAS). Installed, configure and managed HP BL 380 blade servers. Configured NIC bonding, network kernel modules for HP devices. Updated firmware on HP servers. Configured NBU snapshot backups for ESX servers. Configured FC drivers for SAN storage. Updated firmware on all facets of HP Blade and physical servers. Managed NFS, Samba and CIFS shares with NIS and Centrify. Puppet configuration and system management.

April 2008 – Aug 2009 Screen Actors Guild

Sr Unix System Administrator (Team Lead)

Aug 2006 – March 2008 Loyola Marymount University

Sr Unix System Administrator

Aug 2005 – Aug 06 Jet Propulsion Laboratories / CSC

Email System Administrator

March 2005 – Aug 2005 Warner Brothers Online Glendale, CA

Unix Systems Engineer

Aug 2004 – Aug 2005 Dole Food Company Westlake Village, CA

Unix Administrator (HU-UX and AIX)

Nov 2003 – Aug 2004 Walt Disney Imagineering (Contract) – Glendale, CA

Unix System Administrator

July 2001 – Dec 2002 Internet Business Services – Calabasas, CA

Systems Administrator / Network Administrator

Aug 2000 – July 2001 – Marina Del Rey, CA

System Administrator

Aug 1999 – Aug 2000 Brand X Internet (ISP) – Santa Monica, CA

System Administrator / Tech Support Specialists


Hortonworks advanced Oozie and Spark training LAB.

Hortonworks Ambari and LDAP training LAB.

Redhat Enterprise Linux 6 RHCE Course (2011)

Custom Configuring, Managing and Maintaining Windows 2008 Server (2010)

Hitachi Content Platform and Operation for Users (2010)

VMWare Training Course: Virtual Infrastructure with ESX Server Install and Configure

Solaris System Performance Management SA-400 – Sacramento CA (March 2009)

Sun Solaris 8 System Admin Fast Track Course – Colorado Springs, CO (July 2002)

Nasa Unix Administration Certification

Nasa IT Security Certification

Sun Certification Training. Santa Monica College Santa Monica, CA (1996)

Oracle DBA Class Santa Monica College - Santa Monica CA (2002)


Strong problem-solving and analytical skills. Excellent communication and people skills.

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