SUMMARY:

I am a Senior System and Application Support Engineer, whose universal skillset has served as the technical foundation for demonstrated excellence in a variety of production environmentsincluding Financial Services, Telecom, Health Care, and the Energy Sector. My ability to deliver mission critical contributions has benefitted the following industry and sector leaders

EXPERTISE:

RHEL & CentOS Linux 6/7, Solaris, AIX, HP - UX, Bourne/ksh/bash shell, perl, python, rpm/YUMLinux kernel, DNS, SSH, RAID configuration, Ansible, Apache, SQL/MySQL, AutoSys, Cyber Security (OSSEC HIDS, Industrial Defender, Tripwire), Backup & Recovery (Networker, Avamar)Centrify (AD), VMware/vSphere, Regulatory Compliance

WORK HISTORY:

Confidential, Horsham, PA

Sr System Engineer

Responsibilities:

• I was responsible for cable television and streaming Subscription and configuration support for commercial cable Providers;
• Core applications and platforms consisted of CentOS 6/7, VMware, BIND, bash, and Ansible; Secondary responsibilities included development and update of Manuals of Operation, Deliverable Scheduling collaboration, and third-party technical support;
• Customer-facing software included a suite of proprietary applications which provided subscription management and operational support services.

Confidential, Malvern, PA

Linux/Unix Provisioning Team / Retail Operations

Responsibilities:

• I was responsible for interacting with internal development and client support groups, maintaining and modifying web site configurations, including the provisioning of web site environments;
• Additionally, I performed security application installations and updates as part of a multi-stage update of the Retail client space;
• During the second half of my assignment with Confidential I participated in a configuration management platform conversion, transitioning from BMC BladeLogic 8.2 to Red Hat Ansibleusing playbooks/inventories/plays/roles/handlers, and maintaining bash scripts, korn scripts and Python programs.

Confidential, Philadelphia, PA

Linux & Unix Administration

Responsibilities:

• Implemented all Industrial Defender network and system security controls as a member of a two person Linux/Unix/Windows team, within context of NERC CIP v3/v5 Federal Compliance requirements;
• Participated in Root Cause Investigations, Apparent Cause Investigations, performed all evidence collection activities for Linux/Unix assets and selected firmware appliances, and developed perl/python/shell scripts to automate these activities;
• Performed all aspects of Linux (RHEL/Centos) and Unix (AIX) system administration, including system and network information entitlements, user account managementapplication management, perl/shell development, and remediation of performance issues;
• Performed all Linux/Unix security updates, application and object security reviews, and application development to ensure compliance with Confidential CIP v5 requirements, including v3 to v5 transition;
• Interfaced with Business Units, Management, Auditors, and Vendors on all issues relating to system and application performance, and compliance.

Confidential, Philadelphia, PA

SAS Platform Manager, Linux/AIX Administrator

Responsibilities:

• Performed SAS platform and application administration services, including including all user entitlements, resource management, application upgradeslicensing, Stored Process creation, and vendor liaison using AIX version 6;
• Provided installation support for a Hadoop development cluster, and Linux admin support for a cluster of Red Hat Linux (RHEL 6) VMs, including initial installation and configurations of Nagios and Puppet;
• Designed and implemented a Production migration of all SAS applications, users, and data from an out-of-support environment (version 9.1.3) to vendor supported version 9.2, including AIX Unix server and Windows XP/Win 7 desktop applications;
• Performed all Windows desktop SAS application installations and support, including PC Files Server, Enterprise Guide, and eMiner;
• Developed ksh, bash, perl, and SAS programs in support of AIX, Linux, and SAS system and application management, and user support.

Confidential, King of Prussia, PA

Senior Linux Administrator/Developer

Responsibilities:

• Responsible for performing all aspects of system and user related Linux support for a 600 server, international network of Red Hat (RHEL) Linux servers, running RHEL5 & 6; Server inventory consists of VMWare ESX VMWare vSphere 4.1 servers;
• Performed new server builds using Red Hat KickStart, with post-install configuration management being performed using Red Hat Satellite server;
• Responsible for all Linux kernel module installation and management;
• Perform all aspects of performance monitoring and tuning, covering both application and server health;
• Provided development services for my admin group using Perl and Bash scripts to automate operational tasks and implement site and application monitoring services;
• Provide application and site-wide support including package management using yum, rpm, and rhn network resources;
• Perform server performance tuning, develop application monitoring and improvement recommendations, DNS and NFS configurations, application server configurations, High Availability RHCS, logical volume management (LVM using SAN storage arrays)problem management & issue resolution, interaction with internal peer support organizations including Storage Management, Network Services, remote support groupsand vendor representatives;
• Provide performance enhancements and tuning services for Apache web servers, Including virtual memory, module, and network configurations;
• Provide performance guidance and tuning recommendations for Oracle RAC server performance improvements, including kernel configuration, virtual memory allocationshared memory/semaphore configuration, storage, and networking enhancements;
• Projects for which I provide technical leadership include the installation and monitoring of network security using OSSEC-HIDS, maintenance and update of internal and external web site SSL certifications, and development/administration of server backup auditing using an original suite of perl/bash scripts and sql queries;
• Responsible for backup coverage for all Linux servers, using a combination of Networker and Avamar backup platforms;
• Managed internal Network user entitlements using CentrifyDC (Active Directory “AD”), and managed external DMZ RP servers using native Linux utilities and functions.

Confidential, New York / Princeton, NJ

Senior Unix / Linux Administrator & Application Support Specialist

Responsibilities:

• System Administrator for Firm’s Books and Records network;
• Performed all user, server, DR, and networking administration services, including DNS, NIS, NFS, RAID configuration and storage interface;
• Functioned as Engineering and Vendor interface for issues requiring escalations and delivery of patches and package updates;
• Working in close alignment with Business Unit(s), defined requirements and implemented ptimized operating environments for the individual BU work streams and data flows;
• Responsible for server and application monitoring and tuning using locally developed and third-party tools;
• Provided application development services in support of HA/DR, in the form of Perl scripts to perform application component health checks, and failover as a remediation to persistent issues;
• Conducted operations side migration from Solaris to Linux for Reporting and Archive application environment, including packaging of locally developed applications using rpmbuild/rpm/up2date;
• Developed bash/ksh/sql scripts in support of daily operations;
• Maintained job scheduling database using cron and AutoSys.