Charles Walker

• Engineered Docker-based microservices supporting virtual radio and ADPF tower operations, building optimized multi-stage container images for distrib edge deployments.
• Developed and maint CI/CD pipelines using GitLab and GitHub Actions to automate app builds, testing, infrastructure validation
• Built and administered Amazon EKS Kubernetes clusters, implementing Helm charts, RBAC, security hardening, automated scaling, and node lifecycle management.
• Administered VMware Tanzu Data Services, including PostgreSQL and RabbitMQ platforms
• Designed and implemented Kubernetes-based data service architectures to modernize stateful application workloads and improve operational scalability.
• Automated infrastructure provisioning and platform operations using Python, PowerShell, Terraform, and Infrastructure-as-Code methodologies.
• Integrated Prometheus monitoring, alerting, and ELK observability pipelines to provide real-time visibility into platform health, performance, and application behavior.
• Engineered and supported OpenStack infrastructure platforms hosting critical cellular communications and network operations workloads.
• Deployed, monitored, and troubleshot containerized applications across Kubernetes and OpenShift environments, ensuring reliable service delivery and operational excellence.
• Served as a Site Reliability Engineer (SRE), driving platform reliability, observability, incident response, root cause analysis, performance optimization, and automation initiatives.
• Implemented monitoring, alerting, and service reliability practices that reduced operational risk and improved overall system availability.
• Collaborated with infrastructure, development, and operations teams to improve deployment automation, workflow performance, platform scalability, and operational efficiency.
• Leveraged GitOps and CI/CD best practices to standardize deployments, improve governance, and accelerate release cycles across distributed telecommunications platforms.

• VMWare Workspace One deployment and management for Workstation and phone MDM management and BYOD
• Windows RDWeb Engineering and Management
• Developed RDWeb sites for in-house applications
• Microsoft Azure AD engineering/management for application deployment and migration to IAAS and SAAS movement
• PowerShell scripting for movement into automation of task and reporting of production system and communications into the AS/400 and Vios
• Microsoft Azure/O365 Security and Compliance management
• Work alongside key vendors (EMC, VMware, Networks) to drive the development and deployment of their technologies within the environment
• Esxi Hypervisor used on the solution
• Design and implement technology solutions based on VMware and Nutanix within the branches to get complete overview and management of the Virtual Env
• Nutanix Provisioning, Cluster Management, configuring and development of AHV and Self-Service Portal Conjurations
• VMWare Horizon engineering and deployment for remote access
• Management of VMWare Horizon desktops and applications
• Developed automations to provision desktops, manage disk space and provision applications for users
• UCS and Dell VMax Storage management
• GIT hub push/Pull deployment for application development/deployment and code revisioning
• PKI/SSL management
• Deployment and management
• SCCM system management
• Management was focused on Patch collective for servers and software deployment
• Servers were configured to meet Application and business SLA (Service Level Agreements) for server patching/restart
• Patch management for Server env
• We are replacing workstations with Mac M3 Pros
• Doing configurations within Jamf, intune and VMware Airwatch to configure monitor and maintain
• Develop systems and processes to unify administration of Apple technology into Lincoln’s current technology stack
• Linux management and MySQL deployment for application conversions
• MACOS and IOS application testing and development for custom home grown applications

• Architected Azure landing zones, governance frameworks, and subscription management to support secure enterprise cloud adoption.

• Led migrations of physical and VMware workloads to Azure, modernizing infrastructure through automation and cloud-native services.

• Designed hybrid identity solutions leveraging Azure AD, SSO, Conditional Access, DUO MFA, and privileged access management technologies.

• Developed Infrastructure-as-Code (IaC) solutions using Terraform, PowerShell, Python, Azure CLI, and GitHub Actions to automate infrastructure provisioning and operations.

• Implemented CI/CD pipelines and cloud governance practices, improving deployment consistency, security, and operational efficiency.

• Served as an Infrastructure Site Reliability Engineer (SRE), driving automation, reliability, observability, incident response, and continuous platform improvement.

• Designed and supported Citrix Cloud and VMware Horizon environments serving 900+ global users across corporate and remote locations.

• Administered Tanzu Kubernetes Grid (TKG) platforms supporting mission-critical mining, engineering, and operational technology applications.

• Automated Kubernetes provisioning, application deployment, and lifecycle management using VMware Tanzu, Python, and PowerCLI.

• Leveraged Tanzu Application Catalog and CloudHealth to improve container security, governance, cost optimization, and operational visibility.

• Engineered enterprise storage, disaster recovery, and secure remote access solutions utilizing Azure, Pure Storage, CTERA, and GlobalProtect.

• Provided technical leadership during multiple mergers and acquisitions, integrating infrastructure, identity, security, and cloud platforms into unified enterprise environments.

• AD Engineering and designing/implementation
• IDM Engineering and designing/implementations with DUO and AZURE/O365
• AD PowerShell management and automation from a perspective of Identity provisioning AD/Azure/365
• Azure PIM engineering and management
• Microsoft Azure AD engineering/management
• Defender 365 management
• PKI/SSL management for the MS Red Forest which served as application Domain
• Aria Log Insight deployment for management into the VMWare logging as well as Blue Madora plugins to manage HP/Dell and Active directory logging and health management
• Microsoft Azure/O365 Security and Compliance management
• Work alongside key vendors (EMC, VMware, Networks) to drive the development and deployment of their technologies within the environment
• Develop and manage deployment, reporting, and project solutions with scripting, automation, and orchestration tools
• Design and implement technology solutions based on VMware products and supply support for escalated performance issues within this product suite
• Find opportunities, develop solutions & drive improvements across the server platforms
• Collaborate with the wider Design and architecture teams to contribute to solution designs and develop standards
• Utilized Control UP for Realtime monitoring of Citrix and VMWare Horizon env
• Wrote Dashboards to tailor to the Help desk so they could manage the env and work with the remote users
• Configured the env for remote aid with the end users troubleshooting and as an RDP management platform
• Management of Cloud based VM’s
• Conversion and management of vCenter to Azure migrations of VM’s
• PowerShell integration of AD with DUO and Microsoft MFA
• VMware Orchestrator and Aria configurations/engineering and management
• Management of JAMF configurations and MAC ticket resolution for Apple Devices
• Configuration of MAC Servers for application Development for IOS devices
• Troubleshooting IOS and MACOS devices to ensure they are configured for production Env.

• PowerShell scripting to automate the Identity Management processes for on-boarding/off-boarding and change in position for both Contractors and FTE’s
• PowerShell scripting of their new hire process and change in positions
• O365/Azure management of email accounts as well as DL/Security groups
• Assignment of Licensing
• Management of Cloud based VM’s
• Conversion and management of vCenter to Azure migrations of VM’s
• Automation of AD (Active Directory) processes for user provisioning new hire as well as job change (departmental transferred) granting and revoking IT (Information Technology) Security
• Implemented Global Protect to replace the Cisco Umbrella/AnyConnect VPN
• PowerShell integration of Virtual Desktop (VMware Horizon) with VMWARE Workspace one
• Windows Server engineering and troubleshooting
• Server deployment
• Troubleshooting windows Servers ranging from services to performance debugging as well
• SQL cluster deployment and management ALWAYS ON and MS clustered
• Nutanix Virtual environment management
• Ansible configuration and management for Windows deployment from Project/Template management
• Infoblox management and configuration esp
• In connection with Ansible automations for deployment of Windows Servers
• Utilized Control UP for Realtime monitoring of Citrix and VMWare Horizon env
• Wrote Dashboards to tailor to the Help desk so they could manage the env and work with the remote users
• Configured the env for remote aid with the end users troubleshooting and as an RDP management platform
• VRealize Network Insight deployment and integration with Infoblox and SolarWinds
• Ubuntu Linux and Red Hat server deployment, Configuration, Troubleshooting
• Azure PIM engineering and management
• Defender 365 management
• Microsoft Azure/O365 Security and Compliance management as well as PKI and ssl
• Work alongside key vendors (EMC, VMware, Networks) to drive the development and deployment of their technologies within the environment

• Windows Server engineering and troubleshooting
• Server deployment
• Troubleshooting windows Servers ranging from services to performance debugging as well
• SQL cluster deployment and management ALWAYS ON and MS clustered
• Nutanix Virtual environment engineering and management
• Ansible configuration and management for Windows deployment from Project/Template management
• Netapp management and configuration for ESXi DataStor's
• Netapp management (provisioning of Luns, configuration of hardware, troubleshooting and working with the vendor for support
• Preparing Netapps to be transferred and replaced with Pure store
• Pure store storage automation within the VMWare env
• Infoblox management and configuration esp
• In connection with Ansible automations for deployment for Windows Servers
• PowerShell scripting for automation on the Windows side
• Python scripting for automation on the Linux side
• Azure PIM engineering and management
• Microsoft Azure AD engineering/management
• Defender 365 management
• Deployment of MS PKI into the production Domain
• Microsoft Azure/O365 Security and Compliance management

• Work while at Lord)
• PowerShell scripting to automate the Identity Management processes for on-boarding/off-boarding and change in position for both Contractors and FTE’s
• PowerShell scripting of their new hire process and change in positions
• Automation of AD (Active Directory) processes for user provisioning new hire as well as job change (departmental transferred) granting and revoking IT (Information Technology) Security
• PowerShell integration of Virtual Desktop (VMware Horizon) with VMWARE Workspace one.

• Lead migrations of applications from 2008 server to 2012r2 and 2016 data center server
• VMWare ESXi and GSX restructure/upgrading and configuration on Nutanix platform
• Migration from HP blade servers
• VMware vRealize Operations consulting for Engineering and Delivery of configured and supported enterprise deployment
• VMware vRealize Automation with intense PowerCLI for Configuration and automation of Tasks associated with ESXi/vSphere’s management as well as Automation of Server provisioning and Life Cycle management
• Automations developed through C#, PowerCLI, Python and PowerShell
• VRealize Network Insight deployment and configuration into vROPS
• Automated build and deployment process with Jenkins and Maven, eliminating 80% of manual work
• VCenter, vSphere, vSan configuration, Datacenter Balancing, Storage Provisioning for Nutanix and Hp cluster
• Netapp management (provisioning of Luns, configuration of hardware, troubleshooting and working with the vendor for support
• Integration (SAAS) application Migration from 2008 servers to OKTA and configuration of SAML integrations for various applications
• AAA Home grown applications which interact with Orange County DMV (Department of Motor Vehicles) and other State agencies.

• Heavy PowerShell scripting for Automation Development/Deployment for Active Directory provisioning of RSA Tokens and Smart Cards
• GitHub Enterprise deployment and configuration for DevOps Env
• VMware vRealize Operations consulting for Engineering and Delivery of configured and supported enterprise deployment
• VMware vRealize Automation with intense PowerCLI for Configuration and automation of Tasks associated with ESXi/GSX vSphere’s management as well as Automation of Server provisioning and Life Cycle management
• Automations developed through C#, PowerCLI, Python and PowerShell
• VMware PowerCLI and PowerShell script development and deployment for automations of the VDI (Virtual Desktop Infrastructure) deployment and Server Deployment
• Ansible configuration for management of RedHat Servers patching and Kernel deployments
• RedHat deployment and LDAP binding
• Configuration VMWare Horizon for thin clients and remote access solution
• Management of over 9000 CSU’s
• Windows 10 and RedHat 7.5
• Drove strategy for migrating from Perforce to GitHub, including branching, merging, and tagging
• Automated build and deployment process with Jenkins and Maven, eliminating 80% of manual work
• VCenter, vSphere, Vsan configuration, Datacenter Balancing, Storage Provisioning for Nutanix and Hp cluster
• IAC (Infrastructure as Code) for RedHat
• Created self-provisioning and connected ServiceNow for ticket-based provisioning through Ansible, Puppet and Docker Containers.

• Led a team of 10 Systems and NOC Engineers responsible for enterprise infrastructure operations, automation, and service delivery.

• Directed infrastructure modernization initiatives across VMware, Azure, Microsoft 365,

• Designed and deployed VMware Horizon VDI solutions, enabling secure remote access and centralized application delivery.

• Built automation frameworks using PowerShell, PowerCLI, Python, C#, and ServiceNow integrations to streamline provisioning, lifecycle management, and operational workflows.

• Engineered VMware vRealize Automation and Orchestrator solutions, delivering self-service infrastructure and automated server deployment capabilities.

• Led Azure cloud adoption initiatives including Azure AD, Microsoft 365, Exchange Online, ADFS, SSO, security, compliance, and hybrid identity management.

• Migrated on-premises workloads to Azure and VMware environments, improving scalability, resiliency, and operational efficiency.

• Designed and administered SCCM environments supporting software deployment, OS imaging, patch management, and endpoint lifecycle management across multi-site and multi-forest infrastructures.

• Architected and deployed Workspace ONE and AirWatch solutions supporting 25,000+ endpoints and 10,000+ mobile/BYOD devices.

• Managed Cisco UCS, Nutanix AHV, VMware virtualization platforms, and enterprise storage solutions to ensure high availability and performance.

• Administered enterprise Active Directory, DNS, DHCP, SQL Server, MySQL, and Linux platforms supporting critical business and gaming operations.

• Implemented Palo Alto security solutions and access control strategies to strengthen security and compliance.

• Collaborated with development teams to establish GitHub-based DevOps workflows, automation standards, and shared development environments.

• Partnered with VMware and strategic technology vendors to deliver enterprise-scale infrastructure modernization and digital transformation initiatives.