Escalation Engineer Network Specialist

IGOR CELEBIC

416-***-**** – ********@*******.*** – http://ca.linkedin.com/in/IgorCelebic/

P R O F I L E

Senior Systems Engineer, BSc, MCSE, MCSA, MAA Azure, CCNA Action-oriented technical professional with proven enterprise infrastructure knowledge and demonstrated history to work co-operatively while ensuring corporate goals are met.

• Well known as subject matter expert with a strong sense of urgency, versatile thinker, enjoying challenges in a complex and mission critical environment.

• Proficient understanding of new security trends, PCI compliance, audit, disaster recovery strategies, ITIL principles, change management, cloud computing, IAM strategy and industry best practices.

• Focused leadership,organizational skills and expertise to lead complex, high risk projects, acting as 3rd level support, while working together with project and other infrastructure teams T E C H N O L O G Y E X P E R T I S E

Over 10 years experience in the financial industry, supporting large scale international enterprise networks, servicing 30+ domains, large volumes of users, desktops and 2500+ server platforms . Competency with:

• Windows 7, 8.x,10 Desktop,Windows 2003,2008,2012, 2016 R2 Server, VMware ESX/ESXi 4.x,5.1, VMware vSphere 6.x, VMware Horizon 6.x,Citrix XenApp 5, 6.5, 7.x & XenDesktop,Citrix StoreFront, Director,UPM, PVS, Hyper-V,Azure AD

• Expertise with various Microsoft products, monitoring and system tools, including AD DS, AD CS, KMS, RDS, PKI, NDES, IIS, FTP, SFTP, SCOM, SCCM, ADMT, MFSMT, AD LDS, AD FS, LDAP, KERBEROS, NTLM, DNS, WINS, DHCP, DFSR, WSUS, FSRM, MBSA, LAPS, MS SCM,AGPM, GPP, RODC, Sysinternal

• Fluency with AD, Citrix policies, vCenter, Citrix Studio management, MS Security baseline deployment, Windows clustering, Trust relationship, Access rights delegation, RBAC, Hybrid Azure AD integration, AAD Connect, Conditional access, Identity protection, MFA, PIM, SSO, SAML and PowerShell.

• Proficiency with various business applications, monitoring, network, backup tools such as MS Office, TM Deep Security, Extrahop, Wireshark, HP OV, HP DP, TSM, RSA, Websense, Lan Desk, vRanger,Quest MMAD, RUM, ARS, RMAD, Change Auditor,GPOAdmin, ServiceNow, Ping Federate, Control Up P R O F E S S I O N A L E X P E R I E N C E

SCOTIABANK, SCARBOROUGH, ON Nov 2019 – Oct 2020

Enterprise Infrastructure Consultant

• Part of a large AD consolidation project including intra, inter domain migration, based in N.America, LATAM and Europe, working with numerous teams ensuring successful implementation of the project

• Oversee on premises AD environment, execute test, production changes regarding users, computers migration, DCs upgrade to Windows 2016, group policy cleanup, PFE proposal, DNS optimization, tackling security vulnerability, alerts, servers hardening and legacy infrastructure.

• Propose solutions, document and implement action plans, contribute and adhere to the operational change process, meeting business and technical requirements. ROYAL BANK OF CANADA, TORONTO, ON Jan 2018 – Oct 2019 Senior Citrix Technical Analyst

• Supported large Citrix XenApp, XenDesktop upgrade project of existing RBC Global Citrix Platforms, providing services to 60K+ XenApp users, 5K+ XenDesktop users, 10K+ daily concurrent connection around the globe including N. America, Europe, Asia Pacific and Australia.

• Collaborated with various project teams in order to complete smooth migration from XenApp 6.5 to XenApp, XenDesktop 7.15, resolving incidents, server infrastructure alerts, monitoring performance, daily capacity and health check reports ensuring LOB application functionality. INTERNATIONAL FINANCIAL DATA SERVICES, TORONTO, ON Apr 2005 – Mar 2017 Microsoft Infrastructure Architect

• Designed, implemented, expanded large international AD environemnet 2003, 2008, 2012 R2 multi- forest, multi-sites, multi-datacenter integrated solutions in order to meet business requirements.

• Engineered and succeeded several AD upgrades, consolidation projects in order to reduce legacy implementation,complexity. Ensured uninterrupted user authentication and access to LOB critical applications, preserving DFSN, DFSR, print resources and business services functionality.

• Reduced number of domains restructuring existing AD environment, performing inter forest migration, creating scalable, internal,client facing secure and manageable AD logical infrastructure for user and resource management, following change management process.

• Achieved high availability of IT infrastructure through virtualization built on VMware ESXi, vSphere, influencing centralized management, security, business continuity and disaster recovery solutions.

• Enhanced several Citrix Presentations, XenApp, XenDesktop Farms dedicated to domestic, offshore and international clients greatly reducing the number of incidents and production downtime. QUIETTOUCH INC., TORONTO, ON Jan 2005 – Apr 2005

Data Center Systems Engineer

• Maintained corporate Windows 2000, 2003 Active Directory, Citrix MetaFrame PS 4.x infrastructure, ensuring domain controllers consistency and Citrix applications availability. MICROSOFT, MISSISSAUGA, ON Dec 2003 – Dec 2004

Enterprise Escalation Engineer, Directory services

• Supported worldwide Microsoft Premier customers troubleshooting all aspects of Active Directory health, resolving critical business down situations in a timely fashion to minimize business impact. E D U C A T I O N & P R O F E S S I O N A L D E V E L O PMENT

• Bachelor of Science in Economics and Network Specialist Diploma

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