Scope of tasks performed: • Deployment and administration of multiple Microsoft Exchange (2013, 2016, 2019) environments, • Mail flow analysis and problem solving of such issues,• Managing customer's Exchange Online + Security & Compliance module, • Administration of the Microsoft 365 environment,• Basic knowledge of the Symantec Enterprise Vault (ver. 11.1) archiving system, • Deployment and administration of multiple Microsoft Skype for Business (2015, 2019) environments, • Microsoft Teams and Teams Phone configuration and administration,• Automation of Exchange/Skype/Teams environments management by the means of prepared scripts,• Managing Dencrypt Communications Solution platform,• Analysis and design of communication solutions based on email and instant messaging,• Administration of IT services operating on classified systems.Projects accomplished for clients:• Implementation of DKIM and DMARC in the organization, • Automation of administration processes with use of PowerShell and MSGraph,• Migration of email archives from Enterprise Vault to Exchange In-Place Archive,• Assistance during the integration of VoIP telephony with Skype for Business,• Implementation of hybrid environment between Exchange on-prem and Exchange Online,• Implementation of coexistance between Skype for Business and Microsoft Teams environments,• Enablement and troubleshooting after turning on the HMA for Exchange and Skype for Business environments,• Preparing, implementing and supporting the Teams Phone service with several diverse IVR call flows,• Investigation of Exchange and Outlook issues using MFCMAPI tool.

• administration and ensuring an appropriate level of security for network devices (HPE, Aruba, Fortinet),• creating security policies, administration and supervision of the operation of Fortinet appliances (FortiGate, FortiMail),• configuration and administration of Linux systems (SLES, OpenSUSE, Ubuntu),• basic knowledge of Microsoft Windows Server 2008, 2012 and 2016,• administration of Microsoft Exchange Server 2016,• managing users and groups within Active Directory,• configuration and administration of the Zenoss monitoring system,• configuration and management of Dell EqualLogic arrays,• working experience with Dell servers.

• installation, configuration and possible troubleshooting the issues connected with operating systems from the Windows family,• provisioning, configuring and, if neccessary, solving problems with endpoints, their peripheral devices or company's mobile phones,• support and troubleshooting the issues with antivirus systems,• solving problems with computer software, • VPN configuration and network support of the endpoint devices,• knowledge of the EZD system and ManageEngine ServiceDesk,• activation and configuration of electronic signatures.