Christopher Nelsen Email and Phone Number

- Conducted daily analysis of the various Tenable vulnerability reports- Built and maintain Linux Splunk environment for continuous monitoring of critical laboratory IT infrastructure- Assess deployment of new hardware and software before use in lab to mitigate possible security issues- Performed specialized Tenable Nessus scans on specialized hardware, delivering analysis and mitigating controls for leadership to make informed decisions before deployment into the lab environment.- Work with researchers in multiple SME disciplines to mitigate security concerns and document system variables for proper auditing - Manage and demonstrate cloud collaboration tools for PSCR staff and outside stakeholders

- Responsible for gathering information necessary to maintain security and establish functioning external barriers.- Reported ongoing authorization metrics for Federal Information Security Management Act(FISMA)- Utilized NIST Risk Management Framework(RMF) to conduct division efforts for ongoing authorization. - Conduct daily audits of ISVM security weakness and report findings up to the governing ISSM team - Daily auditing of Tenable Security Center Continuous View (SCCV) for director level reporting.- Review system in order to identify potential security weaknesses, recommend improvements to amend vulnerabilities, implement changes and document upgrades.- Ensuring the system is operated, maintained, and disposed of in accordance with internal security policies and practices as outlined in the accreditation/certification support documentation package.- Currently developed and maintaining an accreditation/certification support documentation package for IP Gateway. - Traveled on site to conduct ATO accreditation and security package, including full site inspection and interviews with relevant staff on site at Argonne National Labs. - Manage a team of security professionals to conduct day-to-day operations and maintenance. - Conducted extensive security assessments of federal facility vulnerabilities.- Utilized the latest risk management technology to ensure security compliance and maintain operational uptime.

• Responsible for identifying Federal IT requirements and develop strategies to counter evolving threats to critical networks and critical infrastructure.• Developed change management plan for tracking various IT systems in the production environment. • Analyzed long-range plans for IT security systems that anticipate, identify, evaluate, mitigate, and minimize risk associated with IT vulnerabilities.• Implemented the Information Technology Systems Engineering Lifecycle to improve organizational information systems.• Identifying needs for IT changes based on new security technologies or threats as they pertain to the division • Responsible for resolving integration issues related to the implementation of new systems with existing hardware. • Initiated changes to improve the security and reliability of information systems• Effectively communicate with higher-level management to conceptualize IT concepts.• Collaborated with software engineers developing new systems design methodologies to improve software quality.

Responsible for hardware installation, maintenance, and troubleshooting in data center and Network IDF closetsInstallation and administration of growing VMware clusters at multiple Data Centers in the downtown area.Design and implementation of the virtual environment with VMware ESX 5 servers on IBM and Dell hardware with local SCSI and centralized Fiber Channel storageProvide network audits and diagnosing for future upgrades and maintenanceServer and Client Administration using vSphereMicrosoft SCCM administration for patching and reporting of growing fleet in a virtual environment.Server 2008 and 2003 administration and installation Working with various 3rd party vendors to complete projects and perform contracted services on relative hardware

Provide 24/7/365 support to ensure data centers I support remain up and efficient 100% of the time.Perform full life-cycle project management at various client sites; collected and analyzed large datasets and developed customized plans to meet client specifications, and implemented technical solutions to client needs.Partner with teams across the company, including management in order to identify and forecast potential network issues, to include; network outages, facility power (AC/DC), cooling, security/access, rack layout, and cable management. Developed strict operational procedures for the various issues in order to mitigate risk and prevent future failure.Led, developed, and maintained data centers for various Tier 1 Global clients; Client facing 80% of the time.Met established client Service Level Agreements (SLA's), i.e; 24 hour response to replace dead nodes from GSA cluster.Participated in the design and deployment of new data centers and various Pop infrastructures throughout EMEA, AP, and the Americas.Responsible for the diagnostics and maintenance of server hardware and the deployment and maintenance of long haul optical gear.Accept additional responsibilities in order to develop skill set to include; DC-power installations, turn up, test, and commission of new optical WDM rings/systems, as well as other various responsibilities.Strong knowledge of best industry-standard practices for cable dressing and management, including fiber-optic.

Built numerous windows 2000 / Linux servers from work order systems to special configurations.Installed hardware and software RAIDS.Performed Net boot base installs with implementing customer configurations after install.Provided 24/7 technical support Crimped cat5 and installed fiber links with NOC guidance