Sergey Yun Email & Phone Number

Montreal, Quebec, Canada

At Nectari Software Inc., we help businesses make better, data-driven decisions. Nectari, or Sage Enterprise Intelligence, is a cloud-enabled business intelligence and data management solution that facilitates quick and informed decision-making through real-time data insights. An intuitive interface enables users to access and analyze data independently, reducing reliance on disparate tools or specialized skills.As a System Administrator, my responsibilities include and not limited to:Server Management: Managing the on-premises server ecosystem, including Active Directory Domain Controllers, Local DNS servers, backup servers (like Veeam), database servers, and additional critical infrastructure.System Optimization and Updates: Ensuring optimal hardware and software performance, including regular updates and maintenance.Systems and Network Administration: Support and management for system and network transitions, routine administration, and troubleshooting.Issue Resolution: Diagnosing and resolving technical issues to ensure consistent system performance and uptime.Virtualization Support: Managing virtual machine deployment and maintenance via VMware Suite.Capacity Planning and Performance Monitoring: Conducting performance analysis and capacity planning for operating systems and components to align with business needs.System Configuration: Adjusting and optimizing system configurations to meet evolving organizational requirements.Procedure Development and Maintenance: Developing and updating standard operating procedures to streamline operations.Infrastructure and Network Optimization: Designing strategies to enhance local infrastructure and network performance and configuring and troubleshooting network infrastructure to support robust connectivity and security.Hardware and Software Maintenance: Regular maintenance and proactive issue management to ensure optimal hardware and software functionality.

Montreal, Canada Area

Group Elite is the world’s leading Professional Services organization dedicated to the Installation, Support, Consulting, and Sales of enterprise Workforce Optimization Solutions. As a System Administrator, I’m:• Responsible for all company’s servers (AD DCs, Local DNS servers, Backup servers like Veeam, DB servers, and many more).• Making sure that all the software and hardware are optimized, tuned, and up to date.• Serve as System and Networks administration and support, transitions, and implementations.• Performing problems determination and resolutions for supported environments• Supporting and deploying VMs with VMWare Suite as well as NSX virtual networking• Performing operating systems capacity planning, and performance analysis as it relates to day-to-day operations• Analyzing and modifying system parameters as necessary to configure the O/S and subsystem components per business needs.• Developing and maintaining standard operating procedures.• Developing and implementing test plans to verify installations, upgrades, or repairs, including disaster recovery.• Developing and implementing strategies for improving the local infrastructure/network;• Optimizing and troubleshooting Cisco network infrastructure configuration.• Maintaining all the hardware and software in proper conditions.Participation in projects:• AlwaysOnVPN for Windows 10;• Preparation for SOCK2 certification;• Cisco Hyperflex - Hyper-Converged Virtual environment for better-centralized virtualization.• VMWare NSX - virtual network integration.• Network VLAN/WLAN optimization.• KnowBe4 training for users to increase Company's protection from different Cybersecurity attacks.• and more

Montreal, Canada Area

With more than 12 million members, Beyond the Rack is one of North America's leading online shopping clubs (also known as flash sale sites) featuring top designer brand name apparel, accessories, beauty, and home decor at up to 80% off retail. We work with hundreds of major brands to hold first come, first served sales that are open exclusively to BTR members.As a windows system administrator, I'm :Responsible for all Windows-based servers (AD DCs, Local DNS servers, Local Exchange servers, Backup servers, DB servers, and more.) Serve as a lead for Windows applications support, transitions, and implementations. Perform problem determination and resolution for supported environments. Perform operating system upgrades, patching, capacity planning, and performance analysis as it relates to day-to-day operations. Analyze and modify system parameters as necessary to configure the O/S and subsystem components.Develop and maintain standard operating procedures.Develop and implement test plans to verify installation, upgrades, or repairs, including disaster recovery.Develop and implementation of plans for improving the local infrastructure/network functionality.

Montreal, Canada Area

FieldTurf is the world-wide leader in artificial grass and synthetic turf systems for sports fields and residential landscaping.As an IT Technical support, I installed new / rebuilt existing servers and configure hardware, peripherals, services, settings, directories, storage, etc. following standards and project/operational requirements.Researched and recommended innovative, and where possible automated approaches for system administration tasks. I have performed ongoing performance tuning, hardware upgrades, and resource optimization as required. Applied OS patches and upgrades regularly, and upgrade administrative tools and utilities. I have performed daily backup operations. Ensuring all required file systems and system data are successfully backed up and recovery tapes or disks are created. Media is recycled and sent off-site as necessary, also daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems, and key processes, reviewing system and application logs, and verifying completion of scheduled jobs.Diagnosed and resolved technical hardware and software issues. Repaired and recovered from hardware or software failures. Configured/added new services as necessary.Created, changed, and deleted user accounts per request.Responded to requests for technical assistance in person, via phone, electronically, advised user on appropriate action. I have identified and escalated situations requiring urgent attention. Tracked and routed problems and requests and documented resolutions

Montreal, Canada Area

Contract positionMain Duties: - Setup new PCs and install common software applications - Upgrade existing PCs - Deploy SecureID token to mobile users - etc.

Planed and implemented network migration for over 120 users in the new office;Installed, configured and supported Active Directory, DNS, ISA and SQL on Win2008 Hyper-V with RAID and VMware;Administering and supporting current systems and networks; planning new software implementation, hardware, and network improvements according to our business needs by management requests;Supported 1 local Win2008, 2 local and 4 remote Win 2003 servers, around 120 XP and Vista workstations;Set up ISA, FTP, SQL and DNS servers;Designed and remotely deployed 2 Windows 2003 servers with IIS, Apache, Tomcat, and SQL;Designing and implementing firewalls, antivirus, and anti-spam solutions;Designing and implementing backup and disaster recovery solutions;Configuring and repairing networks and servers remotely using RDP and SSH;Monitoring local and remote Windows servers performance;Setting up workstations, printers, and scanners;Implementing software according to business needs.

Aec, Preparation For Microsoft Windows Server 2008 / Exchange 2010 / Tmg Certification

Bachelor'S Degree, Telecommunications Technology/Technician

Aec Preparation For Cisco Ccna And Comptia Linux Certification

French Language As A Second Language