SUMMARY

• Competent, detail oriented and certified Information Technology professional with proven skill sets in the installation and administration of server and computer security practices.
• Experienced and comfortable in team and individual oriented environments focused on project execution that adheres to industry best practice standards in fast paced, demanding and highly changing atmospheres.
• Successful in project coordination and the briefing of subordinate, supervisory, and management at all levels for project coordination and completion.
• Possesses excellent verbal, written, and leadership skills and is proficient in Red Hat Enterprise Linux (RHEL) 5, 6 & 7 as well as most Microsoft Office products.

TECHNICAL SKILLS

• Red Hat Enterprise Linux 5, 6 & 7
• Top Secret/SCI Clearance (5/5/2015)
• Unclassified / Classified Networks
• Red Hat Identity Management (IDM)
• Puppet
• Red Hat Satellite 5 & 6
• Opsview/Nagios Network Monitoring
• Information Assurance
• Splunk

PROFESSIONAL EXPERIENCE

Confidential

Sr. System Engineer

Responsibilities:

• Install new/rebuild, configure and maintain over 500 various virtual and physical RHEL 5, 6 & 7 servers on both classified and unclassified production and development networks including Red Hat Satellite, Puppet, Identity Management (IDM), Opsview/Nagios Network Monitor and Splunk servers.
• Configure services, settings, directories, storage in accordance with operational Standard Operational Procedures (SOPs), Security Technical Implementation Guides (STIG) compliance standards and Best Business Practices.
• Lead Linux System Administrator and subject matter expert for the classified network Linux servers; responsible for installation, configuration, troubleshooting, maintaining and accreditation of all classified Linux servers in accordance with operational requirements, SOPs & STIGs.
• Trusted agent for generation, request and implementation of SSL/TLS PKI certificates on Linux servers on all networks.
• Lead Linux administrator for testing, troubleshooting and implementation of McAfee ePO deployment across the unclassified environment including Policy Auditor and Endpoint Threat Protection modules.
• Coordinate the installation, upgrade, and maintenance of the Linux operating environment including: utilities, communications systems, systems management products, security packages and enhancements in remediation of the latest Information Assurance Vulnerability Management (IAVM) bulletins and applications software packages.
• Maintain, troubleshoot and configure internal and external facing RHEL 6 & 7 Bind9 Domain Name Servers (DNS) resolvers, Postfix Simple Mail Transport Protocol (SMTP) mail routers and Mailman list servers including implementing,maintaining and troubleshooting DNSSEC, SPF, DKIM and DMARC.
• Build, maintain, troubleshoot and configure internal and external facing data flow collection, transport, processing, monitoring and sharing systems providing analysts data and tools for insight into network threats and trends.
• Develop baseline configurations and maintain installation/configuration documentation and SOPs to maintain system standards for disaster recovery, fail over, expected hardware capacity and security for new and existing systems.
• Write, maintain and troubleshoot modules for the implementation of multiple Puppet servers for configuration compliance and management to ensure a more consistent baseline in accordance with DISA STIGS.
• Analyze processes and problems relative to the design of systems, troubleshoot issues and degradations, and developed, recommended corrective actions in areas such as disaster recovery, system failover, capacity planning, applications development, hardware strategy, and Linux operating systems security.
• Troubleshoot, test, resolve and document ongoing problems and optimizations to re mediate hardware/software interface and interoperability problems by identifying server performance, availability, capacity or configuration problems and maintain configurations for system compatibility including IPTables and SELinux context.
• Provides escalated technical support to customers by handling all levels of systems and software related issues and provide on - call technical support.
• Research, recommend, test, implement and maintain automated approaches, enhancements and additions for system administration tasks and functions where possible
• Create, manage and audit user, service accounts for Linux Servers and installed software applications on both classified and unclassified networks.

Confidential

Systems Administrator

Responsibilities:

• Level II System Administrator and Information Assurance Officer (IAO) of a local area network consisting over 1000 Microsoft Windows 7 workstations/laptop and up to 1600 users.
• Planed and coordinated the installation, testing, operation, troubleshooting, and maintenance of hardware and software systems on 10 Microsoft Servers to include proper patching.
• Monitored both Hardware and Software systems for errors and updated them regularly to maintain proper functioning and flow of information.
• Performed various troubleshooting and maintenance operations in Windows Server and Desktop environments.
• Applied best management practices in handling file server, server backups, active directory users and computers, local domains and policies, local security policies.
• Enforced computer security policies in accordance with Confidential Instruction's and DoD publications and conduct local security audits of system security logs to assure network security compliance.
• Created, manage, audited and delete user accounts, email distribution lists, security groups and organizational mailboxes with Active Directory.
• Installed, configured, troubleshoot, and maintained computer hardware and Microsoft based software on both desktop and laptop systems including Virtual Private Network (VPN) capabilities.
• Installed, maintained, troubleshoot and audit software and patches via hands-on and remote management via windows command line scripting.
• Created, tracked, worked and escalated trouble tickets as needed via Remedy trouble ticketing system with an average of 1100 issues resolved per year and produced corporate reports calculating technician efficiency and work load.
• Assisted in the administration of a classified stand-alone internal computer network consisting of 3 servers and over 450 systems.
• Produced corporate reports calculating technician efficiency and work load.