Citrix

Stan Denko

Senior Citrix Systems Engineer Architect

347-***-**** ****.****@*****.*** www.linkedin.com/in/standenko/ Summary

Senior Citrix Engineer Architect with 20+ years in full range of Citrix and Windows life cycle on-prem and in Azure cloud, with proven ability to resolve unforeseen situations under high pressure in short period of time. Strong in business communications and leading projects independently, handling complex escalations under pressure and collaborating with cross-functional teams. Worked with teams spread around the globe, Financial, Federal Government and Healthcare projects. Have public trust clearance. My focus is on delivering the best user’s experience with Citrix and the customer’s satisfaction

Certifications

• Citrix CCE-V: Citrix certified expert

• CC-VAD-CC: Citrix Virtual Apps and Desktops Service on Citrix Cloud

• CC-VAD-MA: Citrix Virtual Apps and Desktops Service Integration with Microsoft Azure

• Azure AZ-900

• Microsoft MCITP/MCSA/MCP

• Cisco CCNA

• ITIL 3.0 Foundation

Education

Harrisburg University

Master’s, Information Systems Engineering and Management Metallurgical Academy

Master’s, Electrical Engineering

Glendale Community College

Certificate program 12 classes, Linux Network Administration Professional Experience

Senior Citrix Engineer Architect Aug 2021 - Nov 2025 Tampa General Hospital TGH

• Designed and built fast, stable and highly available Citrix Virtual Apps and Desktop 1912 LTSR infrastructure hosted in Azure (POC, Test, Prod and DR). Deployed Citrix PVS, Cloud connectors, Citrix Director, StoreFront and FAS on-prem, implemented XML SSL TLS certs, Azure secret keys, NetScaler MFA Ping, n-Factor, GSLB, MSSQL Cluster. Made it work in conjunctions with Citrix Cloud DaaS. 100+ VDA, 100+ VDI, 200+ apps, 800+ concurrent sessions. Consolidated applications hosted on 50+ PVS master images to 10+ Windows server 2019 and 2022. Setup Citrix infra monitoring. Archived 16-20 sec average logon time

• Designed and created new Active Directory OU and GPO structure, migrated Citrix policies. Deployed and configured FXLogix for VDIs. Integrated Citrix App Layering, performed layers MS patching, updates and version control. Created multiple scripts for tasks automation CMD and Powershell

• Built CVAD 2203 LTSR hosted on-prem VMWare cluster for not compatible with cloud apps. Upgraded all farms to CVAD 2402 LTSR on-prem and in the Azure cloud. Migrated DB to Azure SQL Managed Instance

• Performed all Citrix infrastructure proactive monitoring and issues mitigation, maintenance and performance optimizations, Windows and software updates without downtime, kept hospital’s environment outage free

• Completed all medical applications migration to Citrix Cloud and retired XA7.15 LTSR. Assisted with EPIC app migration to Epic hosted env. Closely collaborated with internal IT departments, CyberSec and Networking teams, application analysts, app owners, project managers, vendors, Epic hosting and Citrix support. Created comprehensive documentation, performed support teams’ trainings, interviewed candidates for other teams was involved in global troubleshooting meetings, on-call 24/7

Citrix SME Mar 2021 - Jul 2021

Eversana

• Designed and build Pre-Prod and Prod Citrix CVAD 7.1912 LTSR, PVS based. 50+ VDA, 25 VDI, 500+ concurrent users, created multiple PVS images, applied best practice optimizations

• Setup NetScaler gateway for single URL (internal and external), configured load balanced STA, Storefront and Citrix Director, http-https redirection, MFA with DUO, policies, etc.

• Designed and created new Citrix Policies and MS AD GPOs, including Workspace app, UPM and folders redirection. Re-organized AD OUs, GPOs and VMWare vCenter folder structure. Assisted with migrating multiple apps from legacy Citrix PS 4.5

• Coordinated activities with involved teams, worked on multiple roadblocks elimination

• Created comprehensive Citrix environment built and configure documentation. Finished the project with customer’s full satisfaction

Senior Citrix Engineer Jul 2020 - Mar 2021

Tampa General Hospital TGH

• Supported and kept updated on-prem CVAD 7.15 LTSR infrastructure, main and DR sites across two datacenters, 500+ servers, 4500+ concurrent sessions, EPIC, 200+ medical apps. Mainly worked on future upgrade planning and migration design towards Citrix cloud

• Performed full assessment, highly optimized, cleaned up and stabilized Citrix environment from 27-40 sec to 13-17 sec average logon time, kept hospital Citrix infrastructure outage free with 99% uptime

• Completed outstanding 40+ medical applications migration XA65 - XA7.15 LTSR in short time leading multiple projects simultaneously, closely collaborated with application analysts, application owners, vendors, relevant teams

• Created new and updated existing 50+ PVS master images, worked on patching and updating applications Senior Citrix consultant Jan 2020 - May 2020

CIT Bank

• Completed applications migration XA6.5 to XA XD 7.15 LTSR (Win2008 EOL). Closely worked with project managers and application owners

• Supported Citrix infrastructure: 40+ App servers, 900+ Hosted desktops, 2000+ remote PCs, 60+ published apps, 3000+ concurrent sessions

• Worked on updating PVS images, automating routing tasks, updated documentation Senior Citrix Engineer Dec 2019 - Jan 2020

NTT Data

• Built three Citrix Virtual Apps 7.1912 LTSR farms for healthcare customers in compliance with provided design. Built and configured PVS HA, Director, DHCP HA with failover scope and IP reservation. Created Citrix and GPO policies, built base PVS images and VMs for each farm, applied performance optimizations

• Configured ica proxy on multiple NetScalers (MPX 12.x) through Citrix ADM

• Migrated 20+ applications from XA6.5

Senior Citrix consultant Apr 2017 - Aug 2019

Inova Health System

• Completed XA/XD7.15 LTSR designs assessment and provided recommendations, created HW configuration design and built Dev, Non-Prod and Prod Citrix farms. Applied Citrix best practices for environment performance and stability. Deployed Citrix App Layering 19 in Test. Created 7 new PVS images and built 50 VDIs, applied fixes and optimizations. Implemented server’s and VDIs schedule reboot tasks

• Created environment documentation and support processes transition to ServiceDesk

• Migrated over 100+ applications and Citrix policies from Citrix legacy farms to XA7.15 LTSR. Closely collaborated with project managers, engineers and app owners

• Maintained and supported 10+ Citrix farms XA6.5, XA7.6, 7.15 LTSR, 800+ servers and 12,000+ concurrent users’ infrastructure. Performed monthly patching of 20+ PVS images, automated routine tasks with PowerShell. Assisted with Wyse terminals configuration, management and support

• Provided 3rd line support, collaborated with IT teams and healthcare application vendors Citrix SME Mar 2016 - Mar 2017

FDA Food and Drugs Administration

• Developed and presented to business multiple designs with different use cases based on enterprise needs and compliance with FDA Security. Acquired stakeholder’s approval

• Deployed stable, HA and highly performance XenDesktop 7.8 Dev and PROD infrastructure based on PVS, 25,000 users ready based on Citrix best practice recommendation. Environment successfully passed official full assessment by Citrix

• Designed naming convention, created policies, defined and implemented FW rules

• Built Golden Images and applied patches, fixes, best practice optimizations

• Defined users and apps capacity requirements and created migration plans from XA5.0 and XD7.6 to new platform, defined timelines and set goals, prioritized tasks

• Prepared and handover environment within documentation and support materials/procedures to support teams

• Provided 3rd line support for XD 76 and legacy MF4.5 and 5.0, coordinated Citrix Admins and Engineers on application migration and updating images. Closely collaborated with stakeholders, different vendors and infrastructure teams. Led internal infrastructure meetings and meetings with business stakeholders and app owners Senior Citrix Engineer Jun 2015 - Dec 2015

Shamrock Foods Company

• Built XenDesktop 7.6 Dev infrastructure. Deployed 70+ VDI for developers

• Migrated 30+ apps from Citrix PS4.0 to Citrix XA6.5, onboarded 6 new apps

• Deployed Wyse Device Manager 5.0, migrated Wyse terminals thin clients T10, V50, V50L, WT1125 to XA6.5

• Managed Citrix PS4.0 and Citrix XA6.5, performed monthly patching and updating 6 PVS images

• Maintained XenServers, Citrix PVS Servers, Secure Access Gateway, 100+ Windows 2008 R2, 1300+ users, 2400+ concurrent sessions, cleaned and optimized Citrix infrastructure

• Supported Linux Cent OS 6.6, managed accounts, supported Xymon monitoring system Senior Citrix Engineer Oct 2010 - Aug 2014

Barclays Capital Bank

• Designed and built XenApp 6.5 infrastructure Dev, UAT and PROD, applied performance tuning, deployed EdgeSight. Created and maintained policy/load evaluators/monitoring profiles, multi monitor hooks setup. Created automated server deployment and application remote deployment scripts CMD, PowerShell, automated WMI and MFCOM errors mitigation. Onboarded and adopted new apps for customer needs, migrated 30+ apps from PS4.5 to XA6.5

• Supported Citrix PS 4.5 Dev, UAT, PDN farms with 350+ published apps and 4000+ users of highly demanding and available investment bank environment. Performed quarterly patching activities, weekend on-call remote support

• Was involved in MIH meetings, conference calls, resilience testing, apps troubleshooting. Dealt with the customers on daily basis. Closely collaborated with developers

• Interviewed and trained new team members. Developed new joiner studying programs and onboarding trainings, handover procedures and transfer knowledge, created department policies and processes standardization, developed technical documentation and infrastructure support manuals, adopted and deployed new technologies, setup service processes and did service improvement

Senior Windows Citrix Administrator Oct 2008 - Apr 2010 EDB Business Partner Norge AS

• Provided 2nd-line IT support to 30+ customer domains, incident and problem management of 1500+ Windows 2000, 2003, 2008 Servers. Supported MS Active Directory, File Servers, DFS, DNS, DHCP

• Supported Citrix PS 4.5, Hyper-V cluster, remote monitoring of HP and IBM blades

• Dealt with customers, teams and vendors, provided on-calls and user’s remote support Senior Windows Engineer Oct 2006 - Jul 2008

VESTA company

• Re-designed and built new network infrastructure, deployed and maintained Windows 2003SP2 Servers: AD GPO DHCP DNS File Server, MS Terminal Services. Connected all 5 sites into one VPN network, created static routes, setup data auto-exchange across branches. Deployed MSSQL cluster and accountant software, dial-up banking software. Programmed fiscal printers

• Deployed DMZ gateway based on Linux Fedora Core (Apache, Squid, PPTP), implemented speed and traffic content restrictions. Configured ADSL-modems D-Link, Calisto, Zyxel, setup port forwarding

• Created and maintained Internet and Intranet company’s HTML web sites, created technical docs

• Worked on upgrading and support all branches, workstations maintenance, new employees training and support. Was responsible for hardware and software purchasing. Worked with ISP providers, vendors IT-Department Chief Senior Windows Administrator Jul 2002 - Aug 2006 Government Bureau of Technical Inventory

• Designed, deployed and maintained of 40+ workstations local network Active Directory infrastructure based on Windows 2000 server. Implemented AD GPO, DHCP, DNS, File Server, Terminal Services. Migrated AD from Windows Server 2003. Configured and supported MS Access databases, deployed and maintained accountant’s and lawyer’s applications. Performed HW maintenance, 160+ user’s support

• Designed and implemented electricity lost-free local network infrastructure

• Was responsible for SW, HW planning and purchasing

• Created and managed strong IT department, interviewed and hired people, performed new employee’s on-boarding and orientation trainings, implemented people interchangeability scheme. Optimized day-2-day activities and automated routine. Created IT policies, procedures, knowledge articles and other documentation

• Performed tasks implementation control and reported department’s performance to Director Windows Administrator Apr 2000 - Nov 2001

Government Pension Fund

System Administrator May 1999 - Oct 1999

Government Department of Subsidies

Skills

• Citrix Technologies: Strong in design, deployment and support HA and DR sites, Citrix cloud, Citrix DaaS, Citrix Virtual Apps and Desktop (CVAD) 1912 LTSR, 2203 LTSR, 2402 LTSR, 2503 LTSR, Citrix XenApp and Citrix XenDesktop 6.5, 7.x, 7.15 LTSR, Citrix PS 4.0, 4.5, 5.0, PVS, MCS, UPM, FXLogix, UPS, Citrix App Layering, Citrix Storefront, Citrix Director, Citrix FAS, Citrix NetScaler 9.x-14.x, Citrix Secure Access Gateway, Citrix cloud connector

• Platforms and Hypervisors: Microsoft Windows Server NT/2000/2003/2008/2012/2016/2019/2022/2025, Windows XP/7/8.0/8.1/10/11, Active Directory, Microsoft Cluster, DHCP, DNS, WINS, DFS, SMB, GPO, IIS, RDP licensing, SMTP, SNMP, TFTP, Citrix Hypervisor, XenServer, Microsoft Hyper-V, VMWare vSphere, vCenter

• Scripting and Automation: CMD, PowerShell, logon and logoff scripts, tasks and deployment automation

• Infrastructure, Networking & End-User Computing: TCP/UDP IP protocols, 7 levels OSI, HP ProLiant G1-G7, IBM, Dell, Compaq, MSSQL, Thin clients Wyse terminals, Wyse Device Manager, onboarding adapting and migration new apps, App-V

• Tools and Monitoring: Citrix Director, Citrix EdgeSight, Citrix CDF, Citrix Receiver Diagnostics, Receiver Clean- Up Utility, Citrix Scout, PXE Checker, Citrix VDA Cleanup Utility, RSOP CtxCseUtil Tool, Database and HW Sizing, PowerShell, CMD, Sysinternals, telnet, putty, WinSCP, Wireshark, Solarwinds, Xymon, eventvwr, netsh, qfarm, dsmaint, mofcomp, gwmi, dism, Netdom, gpmc, ipconfig, Citrix training and best practice documentation, etc.

• Soft Skills and IT Service Management: Strong in business communications, able to work under high pressure, experienced in setting up and leading IT-department, multiple projects simultaneously, interviewing and training new members, creating studying programs, preparing to handover procedures and transfer knowledge, writing policies and processes documentation, experienced in hardware capacity and software budget planning, providing customer- oriented service and effective on-call remote support, strong troubleshooting skills, ITIL based process, Event/Incident/Problem and Change Management, SLA OLA UC, processes and service improvements

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