Tyrone Singleton Email & Phone Number

Charleston, Sc, Us

Charleston, Sc, Us

Charleston, South Carolina Area

- Serves as Lead Linux Engineer in migrating all application and infrastructure servers from a stand-alone datacenter into AWS, setting up AWS infrastructure (i.e. load balancers, target/auto-scaling groups, security groups, NACLs) to allow application servers to run in a more efficient and secure manner.- Migrated Infrastructure servers, to include proxies (Apache, Squid), monitoring (Nagios Core/XI) and Database (Oracle 11g/OEM) from RHEL 6 to RHEL 7.- Setup monthly Linux training program to provide junior personnel with the necessary training which would provide continuous growth, as well as ensure they are capable of performing common administrative tasks.- Revamped the servers software management process, ensuring servers are updated in a more efficient manner.- Utilize Ansible (Tower and ad-hoc) to provide configuration management to application servers.

• Provide Front Line Engineering/Tier 2 support.• Research and analyze current and future architecture limitations.• Provide guidance for software development activities.• Maintain system architecture documentation including physical and virtual components as well as data flows.• Document and manage requirements (system & software).• Develop and maintain System Engineering documentation (Risk Management, System Engineering, Requirements Management, etc.).• Provide support to the Operations Team when required.• Develop and maintain engineering and software schedules. • Assisted with installations, upgrades, and patches and ensure system is operating as expected after these actions.

Charleston, South Carolina Area

• Served as sole System Engineer responsible for installation, system maintenance and troubleshooting of over 200 Red Hat Enterprise Linux servers at both locally and remote supported site, which provided such services as DNS, DHCP and internal firewalls using iptables. • Installed and setup a Nagios servers used for monitoring system state, as well as important system processes, setting up new monitoring services as necessary. • Implemented access control list to be used as a template for by other sites within the organization that were performing the same function.• Created a new backup system for Oracle Database servers due to the old backup system causing a load on the servers that tied up system resources, often dramatically affecting site operations.• Led efforts to include hard acquisition, system/network configurations and personnel scheduling in standing up of several new distribution centers.

Charleston, South Carolina Area

• Completed functional and regression testing of Global Command and Control Systems-J (GCCS-J) and Joint COP Workstation (JTCW) software builds, providing reports documenting the testing scope, as well as the results of the testing events. • Created and updated test procedures based on requirements of software applications as designated by the project office.• Responsible for loading, configuring and troubleshooting the primary application servers, the Intelligence Operations Server (IOS) V1, which operates on Sun V240 and Oracle T5140 hardware platforms, operating on the Solaris 10 operating system. The tasks include network configurations, track database management and patch uploads.• Responsible for management of several Windows 2003 Servers in a lab environment. Tasks involved include user-account management, DNS and DHCP configurations and file-system sharing.• Managed network architecture that consists of Cisco 3750g, Cisco 3745 and Cisco 2950 switches. In a need to upgrade network architecture, created a network diagram of the current network architecture, documented issues with current network architecture, as well as customer requests for the new architecture, research equipment to fit needs and submitted suggestions, with proper documentation in support of suggestions.

Reston, Va

• Provided 24x7 support as the point of presence for company’s local office.• Created, updated and deployed Red Hat Enterprise Linux 5 system images, patches and configurations to remote customers.• Developed Bash shell scripts to perform routine functions such as user account creation, and system log maintenance.• Reviewed system logs and alerts to ensure proper operation of network devices.• Performed network duties such as configuring newly install interface modules, trouble-shooting connectivity between sites and user account maintenance on Cisco and Foundry switches.• Updated and provided new documentation for troubleshooting and system management.

Washington D.C. Metro Area

• Provided Tier1/Tier II technical Database Administration support for Global Command and Control Systems – J (GCCS-J), consisting of nine Oracle 10g databases that operated on the Solaris 10 operating system.• Managed database user accounts to include creation, modification and deletion accounts.• Managed logical and physical availability of system tablespaces. Utilized Korn shell scripts to monitor the size of the file systems the tablespaces were located on, reporting when disk space became limited.• Created Korn shell, menu-driven script to complete hourly system checks that included monitoring system processes, Oracle tablespace availability, Oracle user account status, and archive log processing.• Created Korn shell, menu-driven script to complete monthly maintenance on database servers to include starting/shutting down database, managing TNS Listener service, creating system archives utilizing RMAN and starting/stopping of critical database processes. • Provided Tier 1 support for Joint Operation Planning and Execution Systems (JOPES) and Global Status of Resources and Training Systems (GSORTS) GCCS-J applications• Managed service requests and their progress through Remedy (Action Request System) application.

Washington D.C. Metro Area

• Provided Tier II technical Database Administration support for Global Command and Control Systems – J (GCCS-J) consisting of nine Oracle 8i databases. • Managed database user accounts, to include creating, modifying, and deleting user accounts within the database.• Managed logical and physical availability of system tablespaces.• Created primary database storage objects (tables, views, indexes) as necessary.• Assisted in implementing security upgrades, system upgrades and database installations as assigned by program office.• Responsible for importing and exporting of database data to and from remote installations.• Responsible for database archiving.

Lancaster, Pennsylvania Area

• Provided system administration for Nuclear Planning and Execution System (NPES) operating on Solaris 8 operating system. • Responsible for system maintenance, backup, upgrade and troubleshooting of two Sun V210 servers and two V1280 servers connected to two Sun 3510 disk-arrays.• Created and modified existing Bourne shell scripts to enhance system performance and automate common system administration tasks. • Built Windows 2000 servers and Windows XP clients, which used Exceed 9.0 to connect to Sun servers, while emulating a UNIX environment.

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