Citrix

Stan Denko

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

Summary

Top certified senior Citrix Engineer / Architect, with 20+ years in full range of Citrix life cycle, designing, deploying, supporting and upgrading Citrix infrastructure, both on-prem and in Azure cloud, migrating applications, optimizing session launch times and ensuring high availability. Goal oriented, strong in communications and leading projects, handling complex escalations under pressure and collaborating with cross-functional teams. Worked for Investment Banks, environments with teams spread around the globe, Federal Government and Healthcare projects. Have public trust clearance

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, AZ

Certificate, Linux Network Administration

Professional Experience

Sr. Citrix Engineer / Acrhitect Aug 2021 - Nov 2025

Tampa General Hospital (TGH)

•Completed XA7.15 LTSR Infrastructure upgrades (TST, PROD and DR sites) without downtime

•Designed and built fast, stable and highly available (99.99% uptime) PVS based 1912 LTSR infrastructure hosted in Azure (POC, Test, Prod and DR). Deployed Cloud connectors, Citrix Director, StoreFront and FAS on-prem, enabled XML SSL/TLS certs, Azure secret keys. Made it work in conjunctions with Citrix Cloud (DaaS) with 16-20 sec average logon time. 100+ servers, 200+ apps, 800+ concurrent sessions. Created new 10+ W2019/W2022 PVS images, configured Citrix infra monitoring. Built CVAD 2203 LTSR on-prem (for Legacy apps). Configured UPM policies and inclusion/exclusion lists to optimized logon times

•Completed in-place upgrade to CVAD 2402 LTSR on-prem and PVS/VDAs in a cloud. Retired 7.15 LTSR

•Designed and created new Active Directory OU and GPO structure, migrated Citrix policies. Worked with CyberSec, Epic hosting, Citrix support and Networking teams on NetScaler MFA (Ping), n-Factor, GSLB

•Completed 99% of medical applications migration to Citrix Cloud. Assisted with EPIC app migration to Epic hosted env. Closely collaborated with internal IT departments, application analysts, app owners, project managers, medical app vendors, Citrix support. Created comprehensive documentation, performed support teams’ trainings, interviewed candidates for other teams

•Created scripts for tasks automation (CMD / Powershell), performed MS patching, software updates, maintenance and performance optimizations, Workspace app updates, was involved in troubleshooting calls 24/7

Citrix SME Mar 2021 - Jul 2021

Eversana

•Designed and build Pre-Prod and Prod Citrix CVAD 7.1912 LTSR, PVS based. Created multiple PVS images, applied best practice optimizations

•Setup NetScaler gateway for single URL (internal/external) from scratch, built load balanced 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 OU and vCenter folder structure. Assisted with migrating multiple apps from legacy Citrix PS 4.5

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

•Created comprehensice Citrix environment built/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 CVAD 7.15 LTSR (main and DR sites), 500+ servers, 4500+ concurrent sessions (EPIC, medical apps). Constantly worked on future upgrade planning and design towards Citrix cloud

•Highly optimized and stabilized environment to 13 sec average logon time, kept hospital Citrix infra outage free 99% with exception of one monthly 2 hours maintenance EPIC downtime

•Completed 50+ medical applications migration XA65 -> XA7.15 LTSR without project manager involvement, closely collaborated with application analysts, owners, vendors, relevant teams

•Created few W2016 PVS images, worked on patching/updating around 50 PVS images based on W2012 and W2016 across two datacenters

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, automated tasks (PowerShell / CMD), updated documentation

Senior Citrix Engineer Dec 2019 - Jan 2020

NTT Data

•Built three Citrix Virtual Apps 7.1912 LTSR farms for healthcare customers in complience 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 XA7.15 LTSR (Dev/Non-Prod/Prod). Applied Citrix best practices for environment performance and stability. 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. Asquired stakeholder’s approval

•Deployed stable, HA and highly performance XenDesktop 7.8 (Dev/PROD) infrastructure and PVS servers for 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, performed optimizations

•Defined users/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 XD76 and legacy MF4.5/5.0, 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/Linux Engineer Jun 2015 - Dec 2015

Shamrock Foods Company

•Deployed XenDesktop v7.6 Dev infrastructure. Deployed 70+ VDIs (Windows8.1) for developers

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

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

•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/updating 6 PVS images

•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/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 environmentPerformed 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/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 network, created static routes, setup data auto-exchange across branches

•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

•Deployed MSSQL servers and accountant software, dial-up banking software. Programmed fiscal printers

•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/Sr.Windows Administrator Jul 2002 - Aug 2006

Government Bureau of Technical Inventory

•Designed, deployed and maintained local network (40+ workstations) based on Windows 2000 server. Implemented AD GPOs, DHCP, DNS, File Server, Terminal Services

•Migrated AD from Win2000 to Win2003. Configured and supported MS Access databases, deployed and maintained accountant’s and lawyer’s applications. Performed HW maintenance, 160+ user’s support

•Was responsible for SW and HW planning and purchasing. Designed and implemented electricity lost-free local network infrastructure

•Created and managed strong IT department, interviewed and hired people, performed new employee’s on-boarding/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, Citrix XenDesktop, 6.5, 7.x, 7.15 LTSR, Citrix PS 4.0, 4.5, 5.0, PVS, MCS, UPM, UPS, Citrix Storefront, Citrix Director, Citrix FAS, Citrix NetScaler 9.x-14.x

•Platforms & Hypervisors: Microsoft Windows Server 2000/2003/2008/2012/2016/2019/2022, Windows XP/7/8.0/8.1/10/11, Citrix Hypervisor (XenServer), Microsoft Hyper-V, VMWare vSphere/vCenter v5-7.x

•Scripting & 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 & 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 Sizing; PowerShell, CMD, Sysinternals, Wireshark, Solarwinds, Xymon, eventvwr, netsh, qfarm, dsmaint, mofcomp, gwmi, dism, Netdom, gpmc, ipconfig, Citrix training and best practice documentation, etc.

•Soft Skills & IT Service Management: Strong in business communications, able to work under high pressure, experienced in setting up and leading IT-department and multiple projects, 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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