Marvin R.

Execute efforts supporting incremental software deliveries that could require reconfiguration and continuous restructuring / builds of the current infrastructure as new baselines are delivered. • Oversee and monitor performance across several disciplines, and when required, take steps to resolve issues. • Perform tasks of senior level technicians, specialists, and or managers not performed at level 3 due to the size and/or complexity of the tasks. • Provide expert guidance and direction t- government, senior level technicians, and managers. • Direct multiple contractor and subcontractor teams through to project completion. • Work individually, participate actively on integrated teams, and lead multiple tasks, projects and/or teams. • Provide effective provisioning, installation/configuration, operation, and maintenance of Linux Servers and Windows Server Operating Systems in VMWare Virtualized Environments in a Hosted Enterprise Cloud. • Provide support to application engineers using deployed VMs. Tasks include documentation, contributing to engineering and provisioning, monitoring of system performance, operations, maintenance, management of VMs. • Research and troubleshoot systems issues to ensure continual system availability.. • Experience with user authentication using PKI including certificate management, LDAP or Single Sign-on of applications in Windows AD environments. • Comprehensive knowledge of cloud migration and the support of development in a cloud environment. • Five plus years of experience with Redhat Linux, specifically with Server Configuration, Patch Validation for Application impact assessment, General Audit Log Man. and Troubleshooting. • Ability to work independently and as a member of a team focused on customer support, application and operational improvement. • Excellent interpersonal skills, able to coordinate and communicate at all levels from engineer to senior management.

Analyzed user requirements, system architecture, and system requirements specifications, will provide systems engineering expertise, and will develop system architecture and system design documentation. Supported and providing guidance for system development and implementation planning through assessment of system engineering plans and system integration and test plans. Supported the development of system configuration documentation, including designs for capacity and performance planning, and will perform engineering activities, including risk assessments and analyses of alternatives for a variety of system related issues and concerns. She/he will help define task success criteria and test procedures. • Provided guidance and support for system engineering of large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. • Collaborated with program management, system and software integration engineers, test engineers, information assurance engineers, and other project team members in an Agile environment to ensure requirements are met and issues are addressed. • Implemented system engineering practices to ensure the proper degree of engineering rigor is applied to all assigned tasks. • Communicated with and effectively collaborating with internal technical professionals on a day-to-day basis, and with POCs from customer organizations when necessary. • Actively participate in Program Increment Planning and related Agile team activities.

• Experience in managing one virtualization platform, VMware to include deployment and management of Windows 2019 & Redhat 6-8 releases, Tanium OS, and AWS Linux servers. • Management of Splunk, NTP, DNS Servers, DHCP Servers, PaloAlto Firewalls, Cisco switches, and Aruba switches services and systems. • Performed Redhat Linux OS & Windows Server 2016/2019 Installs, patch installations, upgrade, and maintain Intel-based system hardware and software via SCCM & AWS Scripts. • Monitor systems validate the integrity and accessibility of all server resources, hardware, systems, and key processes by ACAS, SCCM and Tanium. • Managed various software applications to include Confluence, Jira, Splunk, Serv-U, anti-virus solutions (i.e. Symantec, FireEye, and McAfee) and Tanium. • Used Veeam/AWS Back up to retrieve, maintain, and migrate programs and data for applications and Linux servers. • Impressive critical thinking skills with the logical thought process to resolve production challenges that mitigated the recent Log4J vulnerability through the entire infrastructure. • Managed and mentored technical team of system administrators and system integration specialists. • Planned and managed multiple hardware and software related projects to maintain and modernize production and non-production infrastructure minimizing operational impacts. • Managed and implemented DevOps culture using Agile and DevOps tools and approaches. • Experience with project management, team tasking, software development, and systems administration. • In-depth experience with DevOps concepts and approaches, infrastructure as code, configuration as code, continuous integration, and continuous deployment mainly Jenkins Pipelines. • Contributed over 5 years of experience with Redhat Linux, specifically with Server Configuration, Patch Validation for Application impact assessment, General Audit Log Man. and Troubleshooting. • Deployment of Pen-testing methods such as FlareVM.

In support of the U.S. State Department’s Consular Affairs Enterprise Infrastructure Operations (CAEIO) team that provides mission critical information technology resources to approximately 250 overseas posts including domestic Passport Agencies, Visa Processing Centers, DoS annexes, and contractor sites. The team also supports approximately 10,000 worldwide clients including 1,200 Consular Affairs customers at locations in the Washington DC Region. • Managed VMware to include deployment and management of Linux servers worldwide. • Performed administration of Oracle RDBMS, PostgreSQL and Networking systems tailored to a highly visible system. • knowledge of scripting languages to include (SH, Bash, Perl used by Puppet and Linux Systems). • Successfully led the Redhat 6 to 7.0-.9 releases upgrade project. • Knowledge of TCP/IP, Active Directory, NTP, DNS, and DHCP by Linux services. • Installed new Linux OS releases, configure, upgrade, patch, and secure servers by automation of Puppet and Ansible and SCCM. • Monitored systems and validated integrity and accessibility of all server resources, hardware, systems, and key processes by Zabbix and Splunk. • Reviewed system and application logs by Puppet and troubleshooting methods remotely. • Managed anti-virus solutions (i.e. Symantec and McAfee). • Knowledge of various software applications to include Confluence, GitLab, Zabbix, Splunk, AppDynamics, Nexus, Jenkins, and Puppet. • Created, maintained and updated documentation for RHEL and Oracle Linux servers. • Managed Redhat Satellite and Capsule servers worldwide supporting various DMZs. • Backed up, retrieved, maintained, and migrated programs and data for applications and Linux servers by snapshots or backup services. • VMWare vSphere experience including the management of Virtual Machines (VMs) between environments and VM design including initial and dynamic resource allocation, movement of virtual and cloud environments.

As a dual hat I Assessed, planned, and troubleshooted system & security measures to protect the university from security breaches on its computer networks & systems.  Update servers, clients, applications, antivirus updates, maintain Active Directory, DNS, Continuous Monitoring logging, SCAP, etc.  Configure, maintain, troubleshoot, and secure systems and network devices to comply with DISA Security Technical Implementation Guides (STIGs).  Possess working knowledge of Window 10/Sever 2012/2016, Exchange 2010, Knowvation, Footprints, SCCM 2012, BES UEM Administration, RSA Token Administration, SolarWinds, Skype, vSphere 6.x, Storage Area Network (SAN) management specifically with EMC Systems and experience with troubleshooting applicable systems.  Apply security patches to comply with IAVMs.  Familiarity with network concepts, Microsoft Windows and Linux operating systems, client-server architectures, virtualization technologies, and basic troubleshooting concepts.  Ability to independently identify relevant technologies/topics and learn new technical skills.  Experience with vSphere problem determination, capacity planning and root cause analysis.  Work experience with vSphere Thin Provisioning, Resource Pools, Host Profiles, and EMC plug-ins.  Perform other tasks as required by the Government contracting office.

Proficiently administered configuration and deployment of systems, including the configuration of multiple network devices. • Performed Assured Compliance Assessment Solution (ACAS) scans, reporting and remediation on servers, workstations, and network. • Performed routine maintenance and monitoring of all Windows 10, Server 2008/2016 Servers. • Hands-on experience with a Security Information and Event Monitoring (SIEM) platform and log management system that performs log collection, analysis, correlation, and alerting within Splunk. • Performed Group Policy Management, management of Active Directory Services, operating system image management, PDQ deploy (similar to SCCM), and patching and security update management. • Streamlined security protocols within networks and logical designs to enhance systems security by utilizing STIGS, including ensuring compliance with information system policies by employing SCAP scanning and monitoring tools. • Setup and configured software, such as Symantec Backup Exec & Microsoft SQL Server and updated Windows on WSUS. • Experience Windows server platforms up to and including Windows Server 2008/2012/2016 technology. • Excellent analytical and problem-solving skills. • Strong written and verbal communications skills. • Experience with Windows client systems up to and including Windows 10.

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