Efrain Carrillo Email & Phone Number

Reston, Va, Us

Analyze the overall IT infrastructure blueprint and design Enterprise architecture integrating platforms, operating systems, and applications across the enterprise.Develop and implement processes for system and network administration focusing on industry best practices, social engineering, intrusion detection, intrusion prevention, and disaster recovery.Lead digital transformation initiatives focusing on security, scalability and performance, increasing operational efficiencies and decreasing downtime and costs.Provide technical and business direction to enterprise-level solutions using cloud computing.Provide management direction and control for application software development, system operations, and user support programs for the ONR community.

Reston, Va, Us

Direct the architecture and engineering team towards achieving high priority customer initiatives. Analyze the overall IT infrastructure blueprint and design system architecture integrating the platforms, operating systems, and applications across the enterprise. Develop and implement processes for system and network administration focusing on industry best practices, social engineering, intrusion detection, intrusion prevention, and disaster recovery. Lead systems transformation initiatives to modernize and transform the systems focusing on security, scalability and performance, increasing operational efficiencies and decreasing downtime and costs. Triage and troubleshoot complex technical problems with server performance, Windows Active Directory, domain trusts, network connectivity and email for class and un-class users.Key Achievements:• Documented requirement specifications designed and implemented a new un-class network for users including configuring active directory, DHCP, VDI, DNS, STIGS settings, domain controllers, member servers and workstations leading to obtaining the “Authority to Operate” (ATO).• Implemented a three-tier windows PKI for un-class and class users; configured auto-enrollment for servers, workstations and domain controllers.• Deployed SCCM infrastructure including agents, external WSUS, software update points and distribution points for two new builds classified and unclassified systems. Configured reporting services creating dashboards and improving visibility for customers.• Configured asset intelligence collecting data on software installed on hosts reporting into SCCM enabling customers to make informed decisions on software maintenance costs and software license renewals.• Implemented base-line security measures mitigating security risks and vulnerabilities for all servers.• Deployed a Privileged Access Management solution to enable the customer to provide restricted access to all Privileged accounts in the environment.

Reston, Va, Us

Lead engineer responsible for a staff of Linux, Windows, Network, SAN, Cyber-Ops, and Datacenter engineers.Lead, participate in, and provide input into the design, re-design and development of technology products and applications. Contribute to and often lead the specification and implementation of new systems.Provide support and assist users with the isolation and resolution of complex issues. Lead root-cause analyses, communicate options for resolution and provide recommendations to customer-facing technology problems.Provide leadership and guidance to establish excellent ratings on multiple cybersecurity inspections for our current customer.

Sr. Systems Engineer providing support for Windows, NETAPP, and VMWARE.

Provide expert judgment and analysis for Global Active Directory design, architecture, security, migrations, and consolidations that employ solutions to company business needs. Resolve highly complex technical issues and conduct advanced research applicable to an enterprise Active Directory Infrastructure. Recommend alterations to development and design that improve quality of systems and/or procedures, and provide ongoing support, maintenance, and enhancement of a complex enterprise Active Directory infrastructure. Fitting forest and/or Organizational Unit (OU) structure to support organizational needs. Modifying (extending) the AD schema to meet specific location user needs. Suggesting root Group Policies (GPOs) and assisting OU administrators with GPOs while maintaining the highest standard of infrastructure security at all times. Create and maintain Active Directory design and operations documentation. Provide level III help desk support relating to the above functions. Plan the execution of special IT projects. Adhere to and help shape policies and procedures, as well as implement appropriate controls and compliance monitoring to effectively deliver and safeguard information assets.

As the Sr. Windows engineer my job is to review, architect and design current and future deployments of Active Directory, MOSS and Exchange environments to run on a Common Delivery Platform or cloud environment. Further duties are to create build documents, compare hardware specs for optimal performance, and present to senior staff on the advantages and disadvantages of technologies. I also designed the Layer 7 Load balancing scheme as well as the layer 4 load balancing, to include health checks, Virtual servers, Wide IP’s for Global load balancing, and physical setups. Also work with Infiniband networking to optimize speed of all the interconnected devices.

Lead and coordinate the maintenance of complex data network hardware and systems; investigate and resolve complex network and hardware matters of significance; Provide technical support and guidance on network design issues. Evaluate and test networking technologies to establish their potential use. Design, implement, and maintain LAN/WAN systems in accordance with specified requirements. Assist in communicating to management regarding the current operational status of networks. Determine methods and procedures for new data, voice or video technologies to ensure performance. Determine approach for customer, based on assessment of customer needs. Provide consultation, support and guidance to organizations and clients. Participate in discussions regarding project decisions and project direction at the executive level. Manage client expectations and balance the needs of organization and client to ensure satisfaction for all relevant parties. Perform cost analysis and vendor comparisons to ensure cost-effective and efficient operations; measure feasibility of various approaches, makes recommendations as appropriate. Provide leadership and work guidance to less experienced personnel. Responsible for installing, monitoring, operating, managing, troubleshooting and restoring service to communications networks in a large telecommunications facility environment. Responsible for performing pro-active monitoring of network elements alarms and alerts to identify those components/elements that may lead to or already are causing network degradation or failure. Utilize hands-on experience and/or training to develop and demonstrate new technology as it may be applied to business or mission areas within the DoS operating environment.

Served as staff lead and supervisor and assisted management in planning, performing and organizing acquisition systems implementation initiatives on a Service-wide basis. Served as representative for acquisition system management issues presenting user recommendations and request for system modifications, enhancements or corrective maintenance.Monitored system documentation, testing, and application techniques to be used throughout the company. Monitored and trouble shoot system enhancements, stages, and software implementation schedules for service.Investigated and resolved hardware and software problems. Developed recommendations on modification of current policy and/or procedures based on customer needs, technology and regulations. Performed projects and studies under the direction of the CEO.Performed the company's consolidation and P2V migration. This included gathering requirements for storage, software, and creating a project timeline. Setup, tested, and executed the P2V migration, also migrated web servers to new DMZ, changed DNS, created new access lists, management LAN and storage LAN.

Alexandria, Va, Us

As the network engineer, supported and maintained the organization’s core and production infrastructure. Duties included network engineering, system administration and security engineering. As the technical lead, performed cost-benefits analysis and project management. Allocated network resources for bandwidth, VLAN setups, firewall rules and phone and fax setups. Installed software and hardware, and monitored performance to ensure the most cost-effective and efficient use of servers in both production websites and store sites infrastructure. Maintained and monitored the network for internet attacks, prevent virus outbreaks, prevented spyware and unauthorized access to server shares, PC’s and laptops. Provided training and technical support for users with varying levels of IT knowledge and competence. Supervised other staff such as Help desk technicians, contractors and other personnel involved in project implementations. Technical lead for implementation and design of future IT developments as well.

Global, Us

Contracted to the Bureau of Prisons to provide support and implement the ITS system. This included telco, servers, router and firewall configurations.

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