SUMMARY

• A Senior Citrix/Systems Engineer with over 21 + years of experience in design, installation, configuration, administration and troubleshooting of Citrix Virtual Application infrastructure.
• Also experienced in various technology fields for emerging organizations with the opportunity to provide leadership in projects, enterprise architecture and engineering; translated into practical business solutions directly impacting the growth and/or profitability of the organization by contributing both tactical as well as strategic operational planning and implementation.

TECHNICAL SKILLS

Operating Systems: Windows Server 2003/2008/2012, Windows 7/Windows 8, VMWare ESX 6.5

Hardware: Dell PowerEdge, HP Proliant, Cisco Routers and switches, Juniper Firewalls, Compellent Storage, Tape Libraries

Virtualization: Citrix XenApp 6.5/7.11, XenDesktop 5.6 / 7.11, Provisioning Services (PVS), Machine Creation Service, Secure Gateway

Network Applications: Microsoft Active Directory and Group Policy (GPO) 2008 R2, Symantec Endpoint, Symantec SMTP Spam Filtering, Backup Exec, IIS, Wsus, MS PowerShell, MDT/WDS

PROFESSIONAL EXPERIENCE

Confidential

Sr. System Administrator/Citrix Engineer

Responsibilities:

• Manage migration/upgrade and deployment of approximately 550 XenApp 7.11 servers and 4,000 plus concurrent users, spread among two datacenters.
• Manage Citrix infrastructure servers such as Storefront, License, Delivery controllers and NetScaler appliances.
• Implemented a 2 factor authentication systems by configuring a radius authentication policies on the NetScalers and pointed it to the DUO proxy for Access Gateway for external users.
• Build a VDI environment of persistence and non - persistence desktops to support remote Doctors.
• Manage VMWare infrastructure cluster consisting of 10 ESXi 6.5 hosts, 17 datastores spread across two datacenters.
• Provide windows server systems architecture, administration, installation, optimization, problem isolation and resolution with infrastructure duties such as group policy objects troubleshooting and Public Key Infrastructure (PKI) creation and regeneration as well as Kerberos troubleshooting.
• Coordinated, implemented and communicated system change requirements
• Management of VMWare cluster managing 550 plus Citrix server VMs for my assigned applications.
• Upgraded windows Access Gateways with dual Citrix 5550 MPX NetScalers and load balance ICA traffic between two datacenters for external access.
• Deployed and migrated a XenDesktop 5.6 environment consisting of 800 plus VDIs into a XenDesktop 7.11
• Automated and managed many daily tasks and server health such as server reboots, user profiles deletions, server cleanups by utilizing multiple schedule PowerShell scripts.
• Administered XenApp 7.11 servers and rollout of updated Images as well as application deployment and scripting processes.
• Management of XenApp server images and XenDesktop Images updates and upgrades using MCS and PVS.
• Worked with application teams to install, improve or deploy updates to their application installed in Citrix.
• Deployed images both Server based for XenApp published applications and Desktop based for XenDesktop VDIs using MCS (Machine Creation Services)

Confidential

Citrix Engineer

Responsibilities:

• Provide a seamless and high availability to virtual applications by configured Citrix Policies, load evaluators, application evaluators and application pre-launch and linger.
• Rapid deployed custom in-house developed applications to the field users and remote users (both on-shore and off-shore) by modifying the XenApp 6.5 provisioned images.
• Virtualized multiple applications to mobile devices (both iOS and Android) by either streaming the application through the use of Mobile Iron or publishing through Citrix XenApp so that users can have access to their applications and content when needed.
• Converted two Citrix farms on two different datacenter into a more robust single farm with multiple zones and load evaluator for higher availability by configuring SQL mirroring, defining the dedicated zone controllers for optimal performances.
• Monitor Citrix and Microsoft servers’ performance by running multiple tools Citrix and Microsoft tools to get server performance and logs.
• Configured Citrix Profile Manager to manage and cleanup Citrix Profiles by streaming profiles and running cleanup scripts to maintain profiles bloat relatively small and Citrix logon time to a minimum.
• Maintained and updated both persistent XenApp and provisioned XenApp servers by utilizing Citrix Provisioning service to rapidly deploy XenApp images.
• Converted a cultural Citrix infrastructure of publishing the desktop and an ad-hoc amount of XenApp 6 images into a more structured, minimal types of XenApp images and the introduction of published applications.
• Configured WYSE Terminals to provide Zero/Thin client solution to business users.
• Implemented monthly Microsoft patches and Citrix Hotfixes by building a test environment where we could test the patches prior to deploying them to the production servers.
• Took part on a datacenter disaster recovery deployment and testing to deploy and duplicate the production datacenter in a remote location.
• Perform administration work by monitoring and modifying Microsoft Active Directory, group policy, Exchange and VMWare infrastructure.
• Worked with off-shore on building a support platform which consisted of training and documentation.

Confidential

Citrix Engineer

Responsibilities:

• Migrated services content from older physical hardware into a new HP Blade Chassis 7000c with Six Blade Servers BL465c and a Compellent sc8000 SAN with a VMware ESX 5.1 Hypervisor into newer version of services such as Web Interface, XenApp 6.5 for application virtualization, License server on a Windows 2008 R2 platform.
• Prepare a master image and converted it into a VMware Template and prepped it to be cloned among sites for ease of updating application and deploying XenApp server among the enterprise. Installed and configure all of the require applications with their configuration/customization Transformation (MST) file using a combination of Wise Enterprise, Adobe Customization Wizard, and Microsoft customization tool to package the applications for ease of building the master image for future application deployment.
• Deploy several application evaluator policies to prevent performance issues or application license abuse.
• Configure and deploy Load Balancing policies to provide higher availability applications in case of a system failure.
• Created a Citrix test Environment for the Development Team to test their applications before deploying them to production.
• Implemented and supported an Infrastructure with a total scale of 1,800 International users with an average of 600 concurrent users on 70 XenApp 6.5 servers.
• Trained and handed responsibilities to local Admins and support team to monitor and manage the new Citrix XenApp 6.5 Infrastructure.
• Configure external services such as Web Interface and Secure Gateway ensuring security by applying an SSL certificate and enabling session reliability as well as following best practice to harden the server and secure the ICA traffic.

Confidential

Citrix Engineer / Systems Engineer

Responsibilities:

• Responsible for creating a highly automated Citrix environment ranging from automated deployment of XenApp Servers using Citrix Provisioning services, maintenance and updates of Citrix servers, ICA clients, application packaging, publishing and testing of applications.
• Planned and deployed high-availability solutions as per Citrix and Microsoft Best Practices and Quality Assurance into multiple sites and datacenters.
• Through the use of proven methodologies, tools and best practices ensured the successful implementation of Citrix and Microsoft technologies. Played an integral role in each of the project phases—Analysis, Design, Build/Rollout and Test.
• Performed application and infrastructure integration, created policies and automation scripts, performed environment builds and scalability tests, deployed test/pilot and production environments.
• Designing windows server 2008 infrastructure and services configuring and troubleshooting Active Directory domain services, DHCP,DNS services, Active directory maintenance and administration, Group policy creation & implementation as well as utilizing LoopBack Processing so that it won’t impact current AD policies.
• Configured and prep a golden image into a VMWare ESX Template for rapid deployment/cloning of new XenApp servers to the farm into multiple sites. Created multiple resource pools and data store mapped to their Compellent SC8000 storage controller for the new XenApp environment.
• Perform migration from both Physical P2V and Virtual V2V using the VMWare migration tool to standardized the Citrix components servers such as Citrix Secure Gateway/Web Interface, License server, Single-Sign On and Edge Sight from physical servers or Test VMWare Workstations servers into the production VMWare Esx infrastructure.
• Worked with project sponsors, identified deliverables and delivered milestones and checkpoints, managed project scopes, organized and maintained the project plan and tasks, engage in quality control.

Confidential

Project Manager/Network Architect Citrix Engineer

Responsibilities:

• Lead development of all operational support programs and processes which contributed to securing long-term business, optimizing levels of productivity and sustaining overall project success.
• Established standardized processes for development, documentation and quality assurance.
• Define an executive IT Strategies and objective to maximize short-term impact utilizing existing systems and position system for scalability. Designed and implemented multiple customer applications with Citrix XenApp.
• Prepare and executed an IT Strategy that reduced administrative costs and directed labor cost.
• Migrated a Citrix Infrastructure consisting of 80 Physical servers to a Virtual environment consisting of 50+ applications, policies and close to 2000 remote users world-wide.
• Spearheaded infrastructure renovation project and implemented system that improved reliability, enhanced efficiency and established scalability for future growth.
• Incentive to design organizational systems creating a production environment as well as a testing environment for Quality Control for the organization’s customer to deploy applications world-wide. Manage daily operations of production design and test assemblies.

Confidential 

Senior System Engineer/Project Manager

Responsibilities:

• VMWare ESX 4.1 – Built complex infrastructure in multiple hosts in an ESX environment with high availability, virtual switching for separating network traffic such as iSCSI and Lan networking.
• Citrix XenServer 5 – Built infrastructures in multiple hosts in a pool connected to a NetApp 2600 for central storage and high availability. Migrated physical local servers into virtual hosts (P2V) and stored them in a remote Colo providing managed service to clients.
• Citrix XenDesktop – Created and managed OS builds in XenDesktop 5, worked on building and provisioning desktop for low governing and high availability by creating a non-persistent (read-only) image and installing all the necessary applications as well as the configuration/customization saving storage space.
• Windows 2008 – Built, Deployed, configured and monitored different Windows 2008 Active Directory infrastructure on virtual hosts and installed and configured network services such as DNS, DHCP and IIS according to the Schematic or client needs. Perform Active Directory trust relations between different domains and forests and migrated objects over from their physical network into the managed network on the cloud.
• Multi-Platform Disk Imaging and Deployment – Experienced in creating Windows OS images using MDT/WDS for use with multiple hardware platforms. Also used a combination of Acronis and Ghost for other imaging needs such as backing up a physical machine to a VHD and multiple deployment of images to desktops and laptops.
• Application Packaging – Have experience in application packaging and customizing application for automatic configuration deployment with the use of Wise and Orca.
• Application Management\Deployment – Experienced in the management and deployment of applications and customization through Active Directory GPO (including configuration and security updates via GPO/GPP as well as Desktop Authority).