DAVID KISER
Colorado Springs
Summary
Senior Systems Administrator with extensive experience in virtualization, IT security, and network management. Proven track record in leading cross-functional teams through modernization projects, enhancing system performance, and ensuring adherence to stringent security protocols across multiple global locations.
Overview
17
17
years of professional experience
Work History
Senior Systems Administrator
OSG Ship Management
Tampa
12.2021 - Current
- 120 Microsoft Server 2019 builds incorporating SAN Management, VMWare ESXi, OVH VCloud Air DR Services, Azure Cloud Services, Backup Exec, Veeam Backup and Replication
- Managed the virtual infrastructure operations for a 1200 user organization, supporting two networks at approximately 21 locations across the globe.
- Foreign operations included multiple hardware stacks, both legacy and converged, including ESXi hosts and NetApp filers
- Implementation of scheduled vulnerability scans on all equipment shoreside and vessel side, using mostly Tenable products
- Modernization efforts including migration from Legacy infrastructure to Converged and Hyperconverged platforms
- Led crisis management efforts during multiple hardware failures, ensuring continuity of site operations and preventing data center loss
- Work closely with management of lower tier engineering teams to include refinement of duty assignments and enterprise escalation rules and procedures
- Ensured compliance with operational performance metrics and contractual SLAs while managing an operation that more than doubled in size and workload since contract inception with minimal staff increase
- Continued daily support of all the vessels and corporate users via remote tools to ensure little to no downtime
- Supported and maintained Hyperconvergence Virtual environment across 26 global vessels, ensuring continuous operation and reliability
- Upgrade all network security equipment on the vessels and in our corporate office to account for each region’s security requirements without compromising any secure infrastructure that was currently in place
- Collaborated with government vendors to plan and implement application installs on the vessels.
- Implementation of LTE systems onboard the vessels to ensure no loss of communications if main system failure
- Lead POC for installation of KVH satellite systems and Iridium backup systems onboard all vessels
- Continue implementation of new policies to abide by US Coast Guard regulations as well and International Cyber-Security policies set forth in the past year for all maritime vessels
Senior Systems Engineer
SkyBridge Resources / OSG Ship Management
Tampa
05.2019 - 12.2021
- Implementation and rollout of new Hyperconvergence Virtual environment onboard their 26 vessels throughout the globe
- Restructured IT environment and network topology onboard shipping vessels for Overseas Shipholding Group
- Configure and maintain all networking equipment on the vessels and in our corporate office
- Point of contact for all crew members (1,040) on the vessels for all IT related issues 24/7
- Work with other vendors to ensure a seamless transition for all upgrades both in the office and on the vessels
- Led IT support for top priority corporate conferences and board meetings throughout the year
- Create IT SLA standards for corporate and yearly audits.
- Implementation of new policies to abide by US Coast Guard regulations as well as International Cyber-Security policies set forth in the past year for all maritime vessels
Interim IT Director / IT Team Lead / Senior Systems Administrator
CarePoint HealthCare
Englewood
10.2014 - 02.2019
- Acted as IT Director, IT Manager, and IT Team Lead while managing day-to-day sys admin duties over the past 24 months
- Worked with CFO to develop a current IT growth strategy for 2017, 2018 & 2019 in order to accommodate exponential company growth while increasing the IT budget to match the company’s future IT needs
- Manage a team of 3 Systems Administrators which provides technical support to over 600 users throughout Colorado, Utah and Kansas
- Assisted developers in implementing CRM into corporate environment to streamline management reporting and enhance client portal tools
- Clinical Works Super-User/Administrator for our clinical practices. Point of contact for our rollout to eClinical Works cloud version throughout all of our facilities and remote healthcare providers.
- Review of 2017 IT budget as well as developing our 2018 budget & plan out the start of our 2019 budget.
- Review all current IT vendor contracts and provide our leadership board members with options to improve our IT resolution times that resulted in saving thousands of dollars.
- Developed and implemented IT strategies and security policies to accommodate HIPPA compliance across multiple states in order to utilize our company’s Tele-Health program in those contracted locations
- Implementation of the IT ticketing system (Manage Engine) in order to keep track of all IT related issues
- Upgrade current server configuration to Server 2016 with Virtualization capabilities using VMWare
- Create and maintain multiple Networks throughout the organization with zero downtime or work-stoppage
- Configured current VPNs within the multi-domain environment while maintaining a high-level security firewall Active Directory configuration and implementation during a 200% growth within the company in less than a year
- Work with multiple security teams to implement new "Next-Gen" security policies and practices utilizing tools such as; CrowdStrike, Sophos and Nessus for security and end-point monitoring
- Update and maintain the network infrastructure while opening 7 new sites locally. Support over 300 remote users and 250 internal users
- Reviewed and corrected GPO policies to align with best practices and ensure HIPAA compliance across on-prem and remote operations
- Standardized all equipment for easier implementation, maintenance and inventory
- Support over 250 ER physicians & ER staff 24/7/ with less than 3 hours down-time annually
- Setup and Maintain VPNs to other healthcare entities throughout the US
- Implemented an updated solution to Tele-Health systems on-prem as well as other sites, utilizing Cisco DX carts, VDI’s and VPN portals to remote sites
- Currently revised the Network-Topology and Network Security solutions that fits the organization better due to the growth over the past 4 years
- Collaborated with the EMR provider to minimize downtimes during upgrades
- Implemented Data & Disk Encryption to our security policies and procedures in order to comply with HIPAA regulations
Systems Administrator III
SphereCom Ent / AT&T DVS-G (Navy Communications)
Herndon
07.2012 - 09.2014
- Contractor for AT&T Government Solutions to provide support for the Defense Information Services Network (DISN) Video Services Global (DVS-G) network
- Systems & Network security specialist with emphasis on government required security audits of the environment
- Executed Stig Viewer and SCAP Compliance Checker on all systems interfacing with 'High' side network to ensure compliance with security standards
- Collaborated with Security to install and implement HBSS and HIPS in compliance with government standards.
- System Patch Management, researched, managed, downloaded and installed all cybercom IAVAMs
- Worked closely with network team to update security across the domains and implement new security policy standards that comply with federal regulations in our environment
- Performed windows-based scripting for task automation
- Performed server migration for failed or compromised systems
- Assembled new servers for deployment in addition to web server setup and secure configuration
- Performed server build out, deployment, and configuration of customer’s and internal systems
- Configured server monitoring software to ensure optimal performance and security.
- Completed hardware upgrades and repairs for on-site servers, including RAID management, to maintain system reliability and performance
- Completed bare-metal restorations for disaster recovery
- Responsible for Ossec Host Intrusion Detection System management and remediation
- Developed operational documentation for procedures and mentored Operations Technicians to enhance team knowledge and operational efficiency
- Performed daily tasks such as; ghosting, imaging servers and workstation, internal troubleshooting and IT services, printer maintenance, break/fix
- Prepared for the migration from Retina to Nessus and ACAS to comply with government security regulations.
Systems Administrator
The Engle Group / USDA (FAS) / US State Department
Washington
03.2011 - 07.2012
- Setup & configuration of Citrix server utilizing RSA tokens with emphasis on remote access for users
- Assisted in standing up a virtual environment for which to migrate 40%+ of our physical servers to virtual
- Managed administration of Active Directory, BlackBerry Enterprise Server, Microsoft Exchange, and Footprints, serving as primary contact for Verizon and AT&T accounts, ensuring seamless communication and support.
- Main support for AD, DNS, DHCP, Exchange and Escalation point for the helpdesk
- Managed and maintained back-up and recovery operations for all data systems
- Virtualized Servers using VMWare ESXI, VSphere, VMotion, With NetApps
- Migrated over 50 Microsoft 2003 Servers to 2008 R2
- Implemented CRM applications to the current FAS environment with ongoing 24/7 support
- Maintained Active Directory user and computer accounts, managing additions, deletions, and group memberships to support user access and security compliance.
- Managed configuration and security of users and computers with Group Policy
- Assisted customer with their PC issue, both Windows and Macintosh operating systems.
- Resolved daily issues such as, networking configurations and protocols, Windows Winsock error, TCP/IP stacks, worms, virus, DNS, DHCP, etc.
- Assisted customers configure e-mail client setup, and help customers with e-mail issues, such as POP servers, SMTP servers and configurations.
- Performed regular backups of domain controller, Exchange Server, and File Server, executing file and share restores as necessary to ensure data integrity and availability.
- Used SMS to deploy Windows 7 images to new client machines using the PXE environment
- Maintained Active Directory users and computer accounts adding and deleting accounts as required as well as making sure that users were members of the appropriate groups
- Maintained Windows 2003/2008 R2 and Exchange 2003/2010 Server Infrastructure
- Worked as a team member in the P2V Virtualization of 50 servers. Using VMWare 5.5, ESXI dramatically reducing the number of physical servers and improving redundancy
- Maintained VMWare ESXI host computers running on VSphere 5.5 hosting several virtual machine instances.
- Ensured all servers were up to date on all software upgrades installing patches when necessary
Systems Administrator
MicroTech LLC / USDA (FAS)
Washington
03.2009 - 03.2011
- Administered Microsoft Windows Servers (Active Directory), Microsoft workstations, and network security devices for 2500 users.
- Updated and maintained all servers within the FAS domain. Proficient with DNS, DNS scavenging, reverse lookups, and GPOs.
- Configured and maintained permission structures within Active Directory.
- Managed multiple software programs including Active Directory, BlackBerry Enterprise Server, and Microsoft Exchange.
- Managed hardware and software applications for workstations, servers, and network data communications.
- Administered Blackberry Enterprise Server and MS Exchange 2003.
- Migrated over 100 overseas posts to Department of State infrastructure, enhancing operational connectivity.
- Collaborated with Microsoft staff to develop proof of concept for CRM users following migration to State Department systems.
- Provided first, second and third line of help desk support for a variety of Microsoft Office, OS XP Professional, and Outlook/Exchange issues.
- Migrated shared files and folders from old physical servers and domain to new virtual servers and domain, ensuring data integrity and accessibility.
- Set up and configured multiple video teleconferencing systems for secure and non-secure conferencing.
- Supported overseas users in 90+ countries using RDP, SCCM and various other resources that are available
- Performed multiple network and server vulnerability scans and repairs throughout my tour
Education
Certifications - Sec + , CCNA, CSSIP
SunSet Learning
Englewood, CO01-2018
Bachelor of Science -
St. Petersburg College
Clearwater, FL01-2002
Some College (No Degree) -
Emporia State University
Emporia, KSCertifications - MCITP Certification, MCSE
ASMED Certification Boot Camp
Rockville, MDCertification - CompTia A+ CompTia Network+ Sec +
Nextec INC
Herndon, VASkills
- IT security management
- Firewall management
- Vulnerability assessment
- Security compliance tools
- Cisco ASA and switches
- Networking technologies
- Network monitoring
- Windows Server expertise
- Virtualization technologies
- Hyper-V virtualization
- Hyperconvergence solutions
- Citrix environments
- Microsoft Exchange Console
- Aruba products
- Windows 10 and 11
- Directory services
- Analytical skills
- Leadership skills
Summary Of Qualifications
Previously held a Secret Clearance: DoD Secret clearance, SSBI dated 03/11/09. Current status: Archived
Timeline
Senior Systems Administrator
OSG Ship Management
12.2021 - Current
Senior Systems Engineer
SkyBridge Resources / OSG Ship Management
05.2019 - 12.2021
Interim IT Director / IT Team Lead / Senior Systems Administrator
CarePoint HealthCare
10.2014 - 02.2019
Systems Administrator III
SphereCom Ent / AT&T DVS-G (Navy Communications)
07.2012 - 09.2014
Systems Administrator
The Engle Group / USDA (FAS) / US State Department
03.2011 - 07.2012
Systems Administrator
MicroTech LLC / USDA (FAS)
03.2009 - 03.2011
Certifications - Sec + , CCNA, CSSIP
SunSet Learning
Bachelor of Science -
St. Petersburg College
Some College (No Degree) -
Emporia State University
Certifications - MCITP Certification, MCSE
ASMED Certification Boot Camp
Certification - CompTia A+ CompTia Network+ Sec +
Nextec INC