Hire the best Windows Administrators

Check out Windows Administrators with the skills you need for your next job.
Clients rate Windows Administrators
Rating is 4.8 out of 5.
4.8/5
based on 569 client reviews
  • $28 hourly
    Hi, I am a technical specialist in the field of system administration, with more than 10 years of experience. The scope of my services includes administration and support of Linux and MS Windows servers, virtualization, working with Mikrotik and OpenWRT, setting up data resilience, there is experience with Cisco. I will be glad to help you professionally with your tasks.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Docker
    GitHub
    cPanel
    Postfix SMTP Server
    Backup & Migration
    Zimbra Administration
    Zabbix
    TCP/IP
    Kernel-based Virtual Machine
    Linux System Administration
    NGINX
    Ubuntu
  • $125 hourly
    20+ years of experience specializing in Infrastructure and hybrid-cloud architect roles focusing on the Microsoft Azure platform as well as cloud security best practices. My technical prowess covers many different facets mostly across backend infrastructure both on-premises and cloud based. I've covered both SMB and large scale enterprise environments. I have an extensive job history of hundreds of past clients just here on Upwork across a large variety of organizations sizes and verticals. Please feel free to ask about any prior job experiences. Certifications: Microsoft Certified: Azure Administrator Associate Microsoft Certified: Azure Solutions Architect Expert Microsoft Certified: Azure Network Engineer Associate Microsoft Certified: Azure Virtual Desktop Specialty Microsoft Certified: Azure Security Engineer Associate Skill set includes but not limited to the following: Windows Server, Exchange, Active Directory, PowerShell, VMWare, Hyper-V, RHEL, SUSE Linux Exchange Online, Entra ID (Azure AD), Teams, Sharepoint Online, Onedrive, Entra ID Premium, Enterprise Applications/App Registrations (SAML), Entra ID Connect, DLP and Governance, Conditional Access, Intune (MEM) with Autopilot, Sentinel, Front Door, Azure Firewall, , Defender for Endpoint/Cloud/Identity Virtual Machines, VMSS, Azure Backup, Azure Site Recovery, Azure Blob Storage, Azure Migrate, Azure SQL, API Management, Service Bus, App Services, Functions, Azure Container Registry, Application Gateway, App Insights, Azure Virtual Desktop (AVD/WVD), Windows 365 Cloud PC.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Email Communication
    Microsoft Azure SQL Database
    Information Technology Strategy
    Ubiquiti
    Computer Network
    Azure App Service
    Microsoft Exchange Server
    Microsoft Azure
    VMware ESX Server
    Microsoft Active Directory
    Cloud Engineering Consultation
    Microsoft Server
  • $70 hourly
    I am a freelancer based in UK. I have been working in IT for more than 10 years. My main expertise are in Microsoft & VMWare technologies. I am also very well versed with networking, firewalls, ubiquity, Pfsense,Enterprise Wifi etc. I have managed to work with these technologies in the past: Windows 2008 server and workstations; Windows 2012, 2016 server and Windows 8/10 workstations; Windows 2003 server and XP workstations; Active Directory Implementation/Maintenance; Network Load balancing through Server 2008; Microsoft Terminal/Remote Desktop Server 2003, 2008, 2012, 2016 Cluster; Microsoft Exchange Server 2000 ,2003, 2007, 2010, 2013; Microsoft ISA Server; Microsoft WDS; Windows Vista Business/Ultimate workstations; Managing Distributed File System (DFS Server);Microsoft Active Directory Sites and Services; Microsoft Group Policy Management; Microsoft Group Policy Preferences; WSUS; System Center Configuration Manager 2007, 2012; System Center Virtual Machine Manager; Norton enterprise suite; Microsoft Forefront Client Security; Blackberry ENT Server. Disaster Recovery Planning; Wireless Clients; VPN Connectivity; Enterprise Anti-Virus Implementation. Hardware .HP Servers (ProLiant DL 360,380,385) Blade Chassis;.HP MSA 2012; HP StorageWorks 1000;HP MSA P2000 StorageWorks .Dell Power Edge Servers .SuperMicro Professional Servers .HP Workstations .Dell Equalogic PS Series .Custom build systems (AMD/INTEL) .Workstation Tools: MS Suite, Citrix Clients, Microsoft Remote Desktop, VNC Server/Client .KVM Solutions .Linux Firewalls: Untangle/Smoothwall/Endian .Dell Severs .Microsoft Storage Servers; Dell Switches
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Windows 10 Administration
    VMware Administration
    Hardware Troubleshooting
    Microsoft SCCM
    VMware ESX Server
    Microsoft Lync Server
    Microsoft Exchange Server
    Windows Server
    Ubiquiti
    Virtualization
  • $100 hourly
    Skills/Experience/Interests - ConnectWise Manage and Automate administration - Designing network device monitoring solutions using existing third party solutions - LabTech scripting for mass software deployment and device configuration changes - Windows system administration of small/medium/large enterprise networks - Routinely wrote LabTech/Automate scripts to deploy software to hundreds of machines where group policy objects were not practical - Thoroughly documented managed services provider processes allowing them to improve the efficiency in their on-boarding of new employees and clients alike - Windows server migrations/upgrades with minimal down time due to proper planning and execution of project - Office 365 migrations, implementations, and administration - Designed, sold, and implemented VMware high availability solutions - Security control implementation in support of HIPAA privacy rules - SonicWall firewall implementation and configuration - VLAN implementation
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Network Engineering
    Network Monitoring
    Technical Documentation
    Software Configuration Management
    ConnectWise Automate
    Network Security
    Network Design
    Managed Services
    Windows Server
  • $30 hourly
    I have broad experience on IT world , am doing System Administration on multiple environment i.e. Microsoft 365 , Google Suite, Digital Ocean ,Bluehost , Godaddy. I do from Desktop Support (am responsible for providing support to company customers and analyzing desktop computer issues configuring computer systems, setting up user accounts, solving hardware and software problems, implementing IT policies, and answering to customer inquiries) up to System Migrations (Website , Databases on different environment cloud and premise). I demonstrate computer proficiency, troubleshooting skills, analytical thinking, communication abilities, customer service orientation, and teamwork. - Linux support (Centos,Ubuntu) - Linux DHCP/Firewall/OpenVpn/VPN (Ipcop,PFsense,IPFire) - Windows Support (Windows 7 , 10) - Mac Support - Microsoft Office (Outlook , Excel , Word , Powerpoint) - Office/Outlook 365 Administration - AWS - Wordpress. Magento , Shopify . Salesforce - Google Tag Manager / Drift Bot Analytics - Intuit Quickbase - Support App ( Freshdesk,Zendesk, Zoho Desk) - Knowledgebase (Udemy ,LMS) - Email Automation , mailchimps , zapier - Trello , Jira , Slack - Wifi/Network Support , Switches . Printers
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    System Configuration
    Database Administration
    Linux System Administration
    End User Technical Support
    Email Support
    OpenVPN
    System Administration
    Linux
    Microsoft Windows
    Office 365
    macOS
  • $50 hourly
    🔍 Are you seeking the expertise of a skilled IT Professonal, Business Automation and a WordPress Elementor specialist in the realms of business and marketing to assist you with your IT/Automation needs? 𝙔𝙊𝙐𝙍 𝙎𝙀𝘼𝙍𝘾𝙃 𝙀𝙉𝘿𝙎 𝙃𝙀𝙍𝙀! 👨🏻‍💻 Get ready to showcase an exceptional range of skills in my portfolio: 👇👇👇 〰️ 𝘼𝙐𝙏𝙊𝙈𝘼𝙏𝙄𝙊𝙉 𝙏𝙊𝙊𝙇𝙎 〰️ ✅ Knowledgeable in Google Apps Script (Let's extend Google Workspace!) ✅ Automation tasks using Zapier and Power Automate ✅ Can integrate any apps via API for automation 〰️ 𝘾𝙍𝙈 𝙏𝙊𝙊𝙇𝙎 𝘼𝙉𝘿 𝙄𝙉𝙏𝙀𝙂𝙍𝘼𝙏𝙄𝙊𝙉𝙎 〰️ ✅ API integrations ✅ Business Workflow Automation ✅ Webhooks by Zapier ✅ Advanced RSS Integration ✅ CRM Automation ✅ Leads Flow Management ✅ CRM Data Migration ✅ Accounting Automation (Xero, Quickbooks) ✅ Apps Script, Google Sheets ✅ Monday.com, HubSpot, ActiveCampaign, Close.io ✅ Google Workspace / Microsoft 365 ✅ AI / Chatbot Development 〰️ 𝙒𝙀𝘽 𝘿𝙀𝙑𝙀𝙇𝙊𝙋𝙈𝙀𝙉𝙏 𝙎𝙆𝙄𝙇𝙇𝙎/𝙏𝙊𝙊𝙇𝙎 〰️ ✅ HTML / CSS / Javascript ✅ Git, Firebase, APIs ✅ Azure Functions (HTTP), MSSQL / Google Cloud Functions (HTTP) ✅ NodeJS with MySQL/MSSQL ✅ WordPress Web Development ✅ Certified Elementor Pro Expert ✅ Proven experience on creating E-Commerce Websites using WooCommerce ✅ Apply WordPress Custom Themes ✅ Can be your Web Master; ✅ Knowledgeable in CPanel, FTP, Web Hosting, Website Maintenance, Security 〰️ 𝙄𝙏 𝙎𝙐𝙋𝙋𝙊𝙍𝙏 𝘼𝙉𝘿 𝙎𝙔𝙎𝙏𝙀𝙈 𝘼𝘿𝙈𝙄𝙉𝙄𝙎𝙏𝙍𝘼𝙏𝙄𝙊𝙉 〰️ ✅ PC Troubleshooting (Hardware and Software) ✅ Antivirus Software (Bitdefender, Windows Defender) ✅ Cloud and Local Backups (Acronis, Windows Backup) ✅ Phone systems (3CX, Matrix Varta) ✅ Mobile Device Management (Microsoft Intune) ✅ CRM Administration (Hubspot) ✅ Fortigate Firewall Administration and Configuration ✅ Microsoft Exchange, Active Directory, Group Policy Object ✅ Microsoft Sharepoint Configuration and Administration ✅ Google Cloud Platform, Microsoft Azure, Azure AD ✅ Microsoft Windows XP/7/8/10/11/Server 2008/2012 ✅ Microsoft 365 and Google Workspace Administration ✅ Virtual workspace set-up and deployment (VMs) ✨ Let's collaborate and unlock the full potential of your projects, specifically in WordPress Elementor and business/marketing automation. Don't hesitate to get in touch with me today, and together, we'll revolutionize your business by redefining success and meeting all your requirements. ✨
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Microsoft 365 Copilot
    Web Development
    Business Process Automation
    Chatbot Development
    Marketing Automation
    CRM Automation
    Zapier
    Microsoft Power Automate
    Google Apps Script
    API Integration
    JavaScript
    Automation
    Elementor
    WordPress
    System Administration
  • $30 hourly
    Professional IT Experience With over 10 years of experience in the IT industry, I possess a diverse and extensive technical skill set. Throughout my career, I’ve worked with various technologies and cloud platforms. Key Skills: Microsoft 365: Proficient in Microsoft 365 services. Microsoft Azure: Certified as a Microsoft Azure Administrator. Microsoft 365 Identity & Access: Certified expert in managing identity and access within Microsoft 365. Email Migration: Successfully migrate emails from on-premise systems and other platforms to Microsoft 365 Exchange. Remote IT Support: Provide efficient remote IT support to users. Network Device Management: Configure and manage network devices, including routers, firewall appliances, switches, and access points. Microsoft 365 Deployment: Setting up Microsoft 365 Exchange and SharePoint environments. Azure Administration: Proficiently manage Microsoft Azure services. DNS and Domain Management: DNS configurations and domain management. VPN Setup: Configure SSL and IPsec site-to-site VPNs. Windows Server Management: Support users both remotely and on-site. VoIP Solutions: Deploye and manage 3CX VoIP solutions.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Desktop Application
    Microsoft Exchange Server
    Aruba
    FortiGate Firewall
    Cisco Router
    Cloud Computing
    Microsoft Hyper-V Server
    Firewall
    Windows 7 Administration
    Cisco Meraki
    Internet Protocol Security
    Network Security
    Microsoft Azure
    Office 365
    Virtual Machine
    VPN
    Microsoft Windows
  • $125 hourly
    With 10+ years of experience working in Upwork and various Microsoft certification such as MCSA Server 2008R2, MCITP Server 2008R2, MCTS Active Directory, MCTS Network Infrastructure, Hyper-V Virtualization etc. I work as a Windows System Administrator from the peace of my own home/office to troubleshoot technical problem with your windows Client/ Server PC. I am an expert in: - Windows Server 2008R2/2012R2/2016/ 2019 Technologies; - Virtualization: Hyper-V & vSphere (5.0-6.5); - P2V & V2V Migration; - All infrastructure services: AD DS, DNS, DHCP, File Server, Print Server, Remote Desktop Services, WSUS etc.; - Clustering - Windows Native Backup, Veeam Backup, Carbonite Backup, Acronis Backup etc. - TCP/IP Networking - Customer Support and Service via Email, Zendesk Ticketing system - Helpdesk Support for Windows and Mac. - New Office 365 Tenant setup, manage and support. - Migration of emails from other platforms to Office 365. - Microsoft Teams Setup - Sharepoint Online setup - Providing technical support to Windows Server/Client under domain environment, resolve networking problem within your network. - Microsoft Retail Management System and SQL server administration. - VMware Administration. - Hyper-V Administration You probably also have noticed the feedback and Microsoft Certifications on my profile to backup my claims. I also assure you that I only charge if you are satisfied with my service and your technical problem is resolved as you want it to. If you want trustworthy, reliable Remote System Administrator who is well versed in Microsoft Technologies, please feel free to invite me to apply for a job. I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Mac OS X Administration
    Microsoft Endpoint Manager
    Microsoft Exchange Online
    Azure DevOps
    System Configuration
    Microsoft Azure
    Helpdesk
    Technical Support
    Office 365
    Desktop Support
    Microsoft Teams
    Administrative Support
    Customer Support
  • $75 hourly
    Is your hair on fire? I specialize in relationships with my customers. I understand the issue quickly and work to resolve your computer problem in short order. Contact me for your remote computer servicing, systems administration, conferencing setups, security audits, virus prevention, podcast setup, audio upgrades and more. Experienced Computer Support Specialist that has been in the business for numerous years. Comptia A+, Server+, Network+, Security+, Cisco CCNA, CCNA/Voice, CCNA/Wireless, Microsoft MCP, MCDST, MCTS, MCITP, and MCSA Certified in Microsoft Windows 7, 8, 10, Server 2008, Server 2012, and Server 2016. I have built custom desktops and I have serviced various desktops, laptops, and smartphones that have been released. Well-versed in the technological sector. Very knowledgeable and always give clear verbal answers to all questions. Reliable service and support. Customer satisfaction always key.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    IT Infrastructure
    Helpdesk
    VoIP Administration
    End User Technical Support
    LAN Administration
    Hardware Troubleshooting
    Incident Management
    IT Service Management
    WordPress
    Domain Migration
    Technical Support
    Google Workspace
    Security Management
    System Administration
  • $30 hourly
    I have 15 years of verifiable experience as a system administrator in the USA. I can provide references. Fast learner, easy-going person. Can handle stressful situations. With a deep knowledge of Windows servers, VMware, Office365 Skills: EF SET English Certificate 71/100 (C2 Proficient) ConnectWise Access ConnectWise Manage ConnectWise Automate IT Glue Active Directory Exchange Servers Office365 Virtualization (ESXi / vCenter, Hyper-V, VirtualBox) Windows Servers Veem Backup Unitrend backup Fortinet Ubiquiti AS-400 (basic) Skill Tags: AD, Active Directory, VMware, vSphere, ESXi, ESX, vCenter, VCSA, vSAN, vMotion, DRS, P2V, V2V, Site Recovery Manager / SRM, vSphere Replication, Veeam, VPC, Fortinet, FortiGate, Forticlient, Office365, Asterisk PBX, ConnectWise, IT Glue, Labtech
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Email Support
    Phone Support
    Online Chat Support
    Technical Support
    VMware Administration
    Troubleshooting
    Helpdesk
    SonicWall
    Management Skills
    Ticketing System
    Microsoft Active Directory
    Windows Server
    Office 365
  • $40 hourly
    WHAT CAN I DO FOR YOU? API Development and integration with POS, Payment processing etc Custom solutions development System administration in Windows client and Server OS Data work in Word and Excel (data entry, formatting, manipulation, consolidation, creating templates with formulas, macros etc) Customer services / Help Desk support Installation, initial staging and maintenance of NCR products such as Aloha POS, Connected Payments, EDC, Aloha To Go, Aloha Online Ordering, Aloha Kitchen Database prepping for restaurants - initial staging and maintenance Etc MY KNOWLEDGE AND EXPERIENCE: Over 20 years of experience in IT industry Experience in implementation, installation and troubleshooting ECDL (ICDL) trainer and test leader Microsoft trainer Numerous certifications from various vendors but mostly Microsoft Level 3 Software Engineer for NCR Hospitality Solutions services Currently support numerous quick chain restaurants in using NCR Aloha POS system Feel free to contact me with the need you have and I will happily answer you and hopefully we can create a fruitful business relationship for both sides.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Customer Service
    API Integration
    Ticketing System
    Point of Sale & Payment Systems
    US English Dialect
    ScreenConnect
    Windows 7 Administration
    Administrative Support
    Microsoft Server
    Technical Support
    Helpdesk
    Windows 10 Administration
    Windows Server
  • $19 hourly
    I am certified Microsoft, VMware professional and CISCO networking IT system administrator\ IT architect, with 20 years’ experiences - Windows server 2003/2008/2012 (R2)/2016 - Active Directory installation/manage/migration - Group policies, DNS, DHCP, Troubleshooting AD, Print servers, File servers - Office 365 administration, Exchange Online, Azure setup and manage - Windows wks XP/7/8/10 - PowerShell scripts development - Exchange local mail server setup and administration - Internet DNS records management for mail and hosts - Manage & setup Outlook and rest office applications - Organizing company backup solutions - Create disaster recovery plan and support it solutions - Manage CISCO equipment - switch, routers - Setup and manage Firewalls –Juniper, CheckPoint, FortiGate, Microsoft ForeFront TMG - VMware vSphere 4.x, 5.x, 6.x: ESXi, vCenter Server, Clusters, HA - Microsoft web server IIS administrator - SharePoint administrator\development\ architect , SharePoint migration (2007,2010,2013) - Dynamics CRM administration, Dynamics CRM migration - MS SQL administrator/ MS SQL developer - Centralized anitivirus systems : Kaspersky,Sophos, AVG - WSUS, patching local and remote systems, based on Active Directory technology level - SAN and NAS systems, connect devices by iSCSI or fiber channel - Hyper-V, Hyper-V clustering - BackupExec, VeemBackup - As well a lots of applications for pointed OS’s Certifications: MCP - Microsoft Certified Professional VMware- Install,Configure,Manage Check Point NG – management Cisco network device - Interconnecting
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    VMware Administration
    Firewall
    Microsoft SharePoint Administration
    Microsoft Hyper-V Server
    Network Administration
    Microsoft SQL Server Administration
    DNS
    Microsoft Active Directory
    Windows Server
  • $95 hourly
    Microsoft infrastructure expert, including high level experience on cloud technologies, hybrid cloud and identity management. Passionate about technology, more than 20 years experienced in the field, using high level certifications to validate knowledge and experience. Certified as MCSA/MCSE Net+, A+, CNE, CNA, CLE, MCT and CTT+. Training capabilities as a plus, one of the things I enjoy the most. Running my own consultancy firm since 2005 makes me very proud. I have designed, executed and supported many projects with a wide range of technologies across the continent, making me an expert for infrastructure integrations and migration process, specially with Microsoft cloud technologies. A personal note, I'm a mountain biker, and father of two. Having my kids in the bike with me, one of my favorites things to do!.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Training Online LMS
    Security Infrastructure
    Computer Network
    Azure App Service
    Microsoft Hyper-V Server
    Cloud Computing
    Microsoft Active Directory
    Microsoft Windows
    Microsoft Azure
    Windows Server
  • $35 hourly
    Hello, I'm a System Adminitrator. Working on mixed environments with Linux and Windows Servers, on virtualized, cloud or physical infraestructure. More than 10 years experience on the IT market bringing excellent client satisfaction, with high quality and professional work. Third-level and Second-level support for all server related issues both physical and virtual. Helpdesk support, incidents and users manuals. Remote Hands for installation task or specific configurations for example installing Cisco routers and videconference devices. Here are some items of my expertise: ✅ Operating Systems - Windows Servers - Unix / Ubuntu /Linux SUSE / RedHat / Centos Install, configure, tunning, backups, scripting and all related administrative tasks. ✅ Virtualization: - VMWare ESXi Build, configure and deploy VMs and templates. Completed P2V, V2V and V2P migration of Windows and Linux servers. Vcenter Administration: Installation, management, conversions, updates and monitoring. - Azure / Microsoft Hyper-V Build, configure and deploy VMs. ✅ Data Bases - Microsoft SQL Server / MySql Install, managing and administration of databases. ✅ NAS Install, managing and administration of Network Attached Storages. Isilon EMC 👉 If this is something you're looking for, ping me for a project.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Virtual Machine
    Unix
    VMware Administration
    Data Backup
    Castilian Spanish
    MySQL
    Linux System Administration
    Backup Administration
    Technical Documentation
    Technical Support
    Red Hat Enterprise Linux
    Ubuntu
    CentOS
    Microsoft Azure
    Bash
  • $45 hourly
    I'm UNIX/Linux System Administrator and DevOps engineer with 20 years experience. I have in setting up and managing servers, optimizing them for best performance and security aspects. I have expertise with setting up baremetal servers of various brands via IP KVM, IPMI, DELL DRAC, HP ILO. I'm working with virtualization platforms such as - VMWare, XEN, KVM, Microsoft Hyper-V, VirtualBOX. I'm working with cloud solutions as Amazon AWS, Google Cloud, Microsoft Azure I have set up and manage web servers using Apache/NGINX, configure HA clusters by using NGINX, Haproxy. The database servers administration MySQL, MariaDB, Percona, Oracle. Also, I have strong knowledge and experience with Windows Server various editions and Windows Dekstop platforms (Windows 10/11) I have great knowledge and strong experience with VPN technologies OpenVPN, PPTP, L2TP, IPSec, Wireguard. Very good knowledge and experience in troubleshooting.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Linux System Administration
    OpenVPN
    VPN
    VMware Administration
    Network Administration
    MySQL
    Apache Administration
    Firewall
    Iptables
    FreeBSD
    DNS
    Amazon Web Services
    NGINX
  • $75 hourly
    I'm a Systems / Network Engineer with over 10 years of experience. I've worked with both Azure and AWS when it comes to cloud, so feel free to ask me any questions you may have.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Cisco
    Microsoft Azure
    System Administration
    Office 365
    Computing & Networking
    Cisco Meraki
    Network Administration
  • $85 hourly
    Expert Systems Engineer and Cloud Administrator with 15+ years experience as an IT professional. I have a BS in Computer Science. I have supported over 100 networks, ranging from small business to fortune 500 companies. I have a wide range of skills and I understand most all concepts in the computing world. I will resolve your issue in a timely and professional manner.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    VMware Administration
    Computer Skills
    Microsoft Outlook
    Customer Service
    Windows 7 Administration
    Network Security
    Microsoft Active Directory
    Windows Server
    Microsoft Azure
    Microsoft Exchange Server
  • $75 hourly
    I am a multi-talented IT professional who brings 15 years of experience to all areas of IT Infrastructure & Security. I'm a Master's degree holder and have 15+ IT certifications across many different technologies. I have held positions from Desktop/Phone Support, Systems Engineer/Administrator, Senior Technical Support Engineer for an Enterprise Technology Company to a "Hands On" IT Infrastructure Manager with overall responsibility for its multi-million dollar IT Infrastructure services. My excellent work ethic and wide range of experience ("jack of all trades") is what separates me from many others that work in IT. I have experience working for the largest financial institutions in the St. Louis Area: -NISA Investment Advisors (Largest financial asset manager in St. Louis) -Wells Fargo Advisors (Largest securities broker-dealer in St. Louis) -Benjamin F. Edwards & Co. (4th largest securities broker-dealer in St. Louis) I am a 2-time EC-Council Certified Ethical Hacker (CEH) Hall of Fame Finalist (Invitation-only recognition program for EC-Council members who scored at least 90% on the CEH exam) I also have experience working with many high profile customers such as the Armed Forces (Army, Navy, Air Force, National Guard), CENTCOM, DHS, DARPA, DISA, FBI, NSA, NYPD, FDA, FEMA, Disney, Universal, AT&T, Caesars Entertainment, FedEx, and Comcast. Technical Skills: Networking: Cisco Routing (2900/3900/4000 Series, ASR 1000), Cisco Switching (6500 Series, Nexus 3000/5000/9000 Series, 3750G, 3750-X, 2960-S), Cisco Meraki, Citrix NetScaler, F5 (BIG-IP) Cloud: Microsoft & Office 365 Administration, AWS S3 Administration Systems Monitoring: Nagios, VMware vROps, VEEAM ONE, Cacti, LogicMonitor, NetApp OnCommand Balance, Cisco Prime Infrastructure Security: Cisco IPS (Cisco ASA w/ FirePOWER Services), Cisco FireSIGHT Administration, Cisco ASA (5500 Series), Cisco ASASM/FWSM, Cisco ISE, Websense, RSA SecureID Administration, Nessus Administration (On-Prem & Cloud), SecureWorks Administration (IPS/Firewall Log Monitoring & RedCloak), Trend Micro Deep Security, Sophos, Webroot, OpenVAS, Metasploit, Burp Suite, Kali Linux, Nmap, Wireshark, Ninjio Telephony & Collaboration: Cisco CUCM/Unity/CUPS, FXS/FXO, PRI, SIP, Voice Gateways, Trunks, IPFlex, InformaCast, Bridge Operator Console, Cisco Expressway/MRA, Microsoft Lync, Cisco Jabber, Slack Servers: Dell (M100e Chassis/PowerEdge M620 Blades, 12th, 13th, and 14th Generation), Lenovo (x3650, SR630, SR650, SR655), Cisco UCS (5100 Series Chassis/B200 M3/M4 Blades), Cisco FI’s/Fabric Extenders, Supermicro Hyperconverged Infrastructure (HCI): Pivot3 (Surveillance & Data Center) Operating Systems: Windows 7/8/10/11, Windows Server 2008/2012/2016/2019/2022, Linux (Red Hat/CentOS) Virtualization: VMware, Microsoft Hyper-V, Citrix XenApp, Citrix XenDesktop (Citrix PVS, DDC, StoreFront) E-mail: Microsoft Exchange 2007/2010/2013/2016, Office 365, Barracuda, Reflexion, Global Relay, Good for Enterprise, BES, GoSecure Email Security Systems Management: Ivanti Patch (Formerly Shavlik Protect), AppSense (Policy/Personalization), Microsoft FIM, Microsoft SCCM, Microsoft WSUS, ServiceNow, BMC (Numara) FootPrints/AMP, Citrix ShareFile, Cisco WebEx (On-Prem & Cloud), PagerDuty, Continuum RMM, ConnectWise Manage, N-Able RMM, Zendesk Wireless: Cisco Aironet Access Points (1140/2600 Series), Cisco Virtual Wireless Controller, Cisco Wireless Services Module 2 (WiSM2), Ruckus Wireless (ZoneDirector 1200 with R500/R610 APs) Storage: NetApp Data ONTAP (FAS2040/3220/3250/8020 Series Controllers), Pure FlashArray (//m20), HP Nimble (AF3000/CS1000), Cisco UCS Storage Server (S3260), NAS, SAN, FC, FCOE, CIFS, NFS, iSCSI, DataDobi (Enterprise NAS Migration), Spectra Library Tape Administration Backup & Replication: VMware SRM, Zerto, vSphere Replication, VEEAM, NetApp Snap Features (SnapMirror, SnapVault, SnapRestore, SnapManager), NetApp SnapProtect (Re-branded CommVault Simpana), Microsoft Data Protection Manager (DPM), Datto Certifications: o VMware Certified Professional - Data Center Virtualization o Certified Ethical Hacker (CEH) o CCNA: Routing and Switching o CCNA: Voice o CCNA: Security o SSFIPS: Securing Cisco Networks with Sourcefire IPS o Citrix Certified Administrator: Citrix Netscaler 9.2 o Microsoft Certified Professional (MCP) o LPIC-1: Systems Administrator (Linux Professional Institute) o NetApp NCDA: Data ONTAP 7-Mode o CompTIA A+, Network+, Server+, Linux+, Security+ Professional Training (Onsite/Classroom Based): o SANS - SEC504: Hacker Tools, Techniques, Exploits and Incident Handling (Taught by renowned Information Security Instructor, John Strand) o NetApp Accelerated NCDA Boot Camp Data ONTAP 7-Mode o SecureNinja – Certified Ethical Hacker v8 Training o Guru Labs – LPIC-1 & Enterprise Linux System Administration o VMware vSphere: Install, Configure, Manage o Basic Administration for Citrix NetScaler 9.2
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Microsoft Windows
    System Administration
    Veeam
    Storage Area Network
    Microsoft Server
    VMware ESX Server
    Backup Administration
    VMware Administration
    Server
    Virtualization
    Troubleshooting
    Network Administration
    Information Security
  • $100 hourly
    🍏Passionate about Azure, DevOps, AWS, GCP, Cloud migration, IT operations, 24×7 Support, Automation, Infrastructure as Code, Security, CI/CD and much more! 👉 Get the SysOps, NetOps and DevOps expertise in your business needs 💎 Save big 💵 by hiring me for your project! ❇️ 20+ Years of Experience ❇️ Terrific Job History with 4000+ Hours on Upwork ❇️ 100% Success Rated on Job Completions on Upwork ❇️ Never Missed Deadlines Set by the Clients ✓ Solution-oriented DevOps Expert, focused on making your infrastructure optimized, stable and reliable, working with maximum efficiency for your business ✓ Strong experience architecting, running and managing complex systems and infrastructures ✓ Main focuses - Security, automation, optimization, monitoring and alerting in Cloud or large-scale server environments ✓ Highly skilled - with cloud platforms like Azure, AWS and GCP infrastructures ✓ Ready to accept complicated projects that attract me - like building scalable HA infrastructures and making massive systems spanning more than 100 servers reliable and fault-tolerant. Core skills and technologies 📣 💡Cloud platforms: Azure, Amazon Web Services, Google Cloud Platform, Digital Ocean, Rackspace 💡Containers: Docker, Azure Kubernetes Service (AKS), Amazon Elastic Container Service (Amazon ECS) 💡Virtualization: MS Hyper-V, VMWare, ESXi, KVM, oVirt, OpenStack, Proxmox 💡Monitoring: Zabbix, Nagios, Icinga, Collectd, Grafana, Loki, Graphite, Logstash, Kibana, Prometheus, Datadog, Sumo Logic, OpManager, Splunk Enterprise 💡Automation: Ansible, Terraform, Chef, Puppet, Windows Scheduled Tasks, Cron Jobs 💡Message brokers: RabbitMQ, Apache Kafka 📧 💡Continuous Integration: Azure DevOps, Jenkins, Gitlab CI 💡Scripting: PowerShell, Bash, Python, CMD, SQLCMD 💡Databases: Microsoft SQL, MySQL/MariaDB, PostgreSQL, SQLite 💡No-SQL: MongoDB, Redis, Memcache 💡Search/IR systems: ElasticSearch, Solr, SphinxSearch 💡Web servers: IIS, Apache, Nginx, LiteSpeed, OpenLiteSpeed, Candy, Lighttpd 💡Client-Side Service Discovery Systems: Netflix Eureka, Zookeeper, Consul 💡Operating systems: Windows Server, CentOS, Debian, RedHat, Ubuntu 💡Project and process management: Jira, Asana, Basecamp, Redmine, Tuleap, Servicedesk, ZenDesk, OTRS 💡Back office management: Slack, MS Teams 💡Version control system: Git, SVN. 💡Integrations: Some examples are: Sending deployment notifications to Slack or MS Teams target channels, sending an alert when disk space is low and integrating an SP with a Windows scheduled task component so that social media channel managers are alerted when a certain topic receives attention by the visitors, etc.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Web Hosting
    WordPress
    Website Optimization
    Web Server
    Azure DevOps
    ASP.NET
    Website Migration
    AWS Systems Manager
    Amazon EC2
    Network Security
    Microsoft SQL Server Administration
    Backup & Migration
    System Monitoring
    Microsoft IIS
    Windows Server
    System Administration
  • $45 hourly
    ✅ TOP RATED PLUS Freelancer on Upwork, specializing in Systems Administration, I have worked with 🌟 High Profile Clients 🌟 in my Career, including the following to illustrate some of them: ✅ Toyota Europe ✅ Top 15 English Language Schools in Europe ✅ BORTEX Fine Tailoring If you are in need of someone with great attention to detail, top-quality troubleshooting and problem solving skills, then get in touch and let us start working together. Some Industry-Grade Certifications that I hold: 🏆Microsoft Office 365 Administrator 🏆Microsoft Azure Administrator 🏆Cisco Administrator 🏆Mikrotik Administrator 🏆Google Cloud Engineer
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Helpdesk
    Microsoft Azure
    Email Deliverability
    DNS
    Server Virtualization
    Microsoft Small Business Server Administration
    Microsoft Active Directory
    Google Workspace Administration
    Cloudflare
    Mac OS X Administration
    Network Administration
    Network Monitoring
  • $105 hourly
    Technology leader whose qualifications include a certification in Helpdesk Management and Operations Management; and detailed knowledge of networking technologies and best practices. Over 24 years of experience in the creation and deployment of solutions protecting networks, systems and information assets for the Education sector as well as for diverse companies and organizations. Proficient in the following Systems/Technologies: Linux Based Systems (Ubuntu, Debian and CentOS); Windows Desktop (all), Asterisk VOIP Systems, Windows Server Operating Systems (2000-2022), Active Directory Administrator, VMWare Esxi 5.5-7, HyperV. Proxmox, Google Workspace Admin and Office 365 Admin, Sharepoint Admin. Experience with Blockchain technologies. In the Managed IT Services sector I have experience with Nable, NinjaOne and Connectwise. LANs, WANs, VPNs, Routers, Firewalls, TCP/IP, Aruba WiFi and Switches, Ubiquiti Unify, Sophos In my current role I work as a Sr. Systems Engineer, Incident Manager and IT Consultant. I look forward to discussing your specific technology project with you.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Blockchain
    Telecommunications Engineering
    FreePBX
    Microsoft SharePoint Administration
    Data Center Operations
    Mobile QA
    VMware ESX Server
    VMware Administration
    Network Administration
    Linux System Administration
    TCP/IP
    Asterisk
    Windows Server
    Microsoft Exchange Server
  • $55 hourly
    As a highly skilled and experienced system administrator with over 18 years of IT expertise, I possess a diverse range of skills and knowledge that make me a valuable asset to any organization. My experience includes extensive knowledge of macOS and Windows environments, as well as expertise in integrating macOS devices with Microsoft 365 and G Suite. Additionally, I have a strong understanding of cloud-based services, including Azure and AWS and SaaS and PaaS solutions. One of my notable accomplishments includes successfully implementing macOS and iOS device management solutions for organizations, which required a deep understanding of Apple-related technologies such as Apple Business Manager, Apple Configurator, and JAMF Pro. Additionally, I have designed and implemented disaster recovery solutions for cloud-based services, demonstrating my ability to manage complex IT environments and provide critical infrastructure support. In my role as a system administrator, I have extensive experience managing and supporting Mac and Windows devices, including software installation, system configuration, troubleshooting, and AV updates and patching. I also have expertise in network technologies such as VPN, DNS, email security (DKIM and SPF), and Active Directory networking, as well as hardware and server installation, including domain management expertise with Server 2019 and 2022. Furthermore, I possess excellent communication skills, which allow me to provide pleasant support to end-users and effectively collaborate with team members. My ability to communicate technical information clearly and concisely has been instrumental in driving successful IT projects and ensuring optimal system performance. Overall, my broad skillset and extensive experience make me a highly capable and valuable system administrator, capable of managing complex IT environments and providing critical infrastructure support to organizations.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Jotform
    Microsoft Power Automate
    Email Communication
    Cloudflare
    VPN
    Network Administration
    Domain Migration
    Amazon EC2
    Virtualization
    Backup & Migration
    Computing & Networking
    macOS
    Google Cloud Platform
    Microsoft Windows PowerShell
    System Administration
  • $75 hourly
    Key Strengths: Work extremely well under pressure Creative solutions to complex problems Results driven Recognizes individual's efforts Quick study Personable Solution Sales Summary: * Executive IT Professional and well-versed technologist with a proven track record of measurable results. Proven team builder and team leader with a broad understanding of effective business processes. * Ability to efficiently sale, scope, deploy and support best-in-class IT management and system security solutions that achieve project targets and are friendly to non-technical end users of all types. * Strong collaborative skills with abilities to lead teams in creating and maintaining IT projects that meet predicted outcomes. * Specialized experience in working with limited available tools, emerging technologies, and legacy systems.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Solution Architecture
    Virtualization
    Virtual Desktop Infrastructure
    VMWare
    Office 365
    Active Directory Federation Services
    Business
    Data Center
    Agile Project Management
    Cloud Computing
    Cloud Services
    Artificial Intelligence
    Microsoft Azure
    Amazon Web Services
  • $150 hourly
    Freelance Microsoft consultant, specializing in Azure, Microsoft 365, and Windows Server. Since 2007 I have worked as a consultant and subject matter expert of various Microsoft products, including Azure, Exchange, SharePoint, Teams, SCCM, and Intune. I have deep understanding and knowledge of Active Directory and all related services, and I am a PowerShell expert. I take pride in architecting industry-standard solutions that offer 99.99% uptime. Over the past several years I have focused my efforts on assisting organizations with migrating their on-premises resources to Azure and M365.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Email Security
    Microsoft Teams
    Automation
    Computer Network
    Microsoft Exchange Server
    System Security
    Scripting
    Microsoft Windows
    Email Deliverability
    Systems Engineering
    Microsoft SharePoint
  • $100 hourly
    Hello Dear Client. If you are looking for ✅ Knowledgeable and experienced administrator to resolve your problems ✅ Responsible and skilled engineer to plan your reliable IT infrastructure ✅ Contractor to improve and maintain your IT environment ✅ A person who will care about your servers, services and keep them stable and robust YOU ARE IN THE RIGHT PLACE ⚡️ Enterprise Architecture ⚡️ Office365/Azure cloud infrastructure and services ⚡️ Microsoft Windows 2008 till 2019 server products (full range of MS services) ⚡️ System Center components (SCCM,SCVMM,SCOM,SCSM,DPM,Orchestrator) ⚡️ Microsoft Exchange 2007 till 2019/Exchange Online ⚡️ Windows 7/8/10 desktop client products I am working in IT for 20 years and have practical work experience to solve the most complex task and provide service, and that proved by more than 9000 successful hours on Upwork for my clients. Most important is for you and me - I still love my work, which can be an advantage in any of your projects related to the Microsoft platform. My approach is always - solve all tasks with maximum effectiveness and less expense. The main specialization of my expertise - Active Directory/DNS/DHCP, System Center components and Private Cloud, Azure technology, Exchange servers. My knowledge and skills are proved by Microsoft certificates which you can find in my portfolio. I am looking for exciting projects or a short-time job. I can help with planning, implementation, and infrastructure support for small, mid, or big-size companies. Also, I can help in troubleshooting and resolving complex cases. On top of the presentation, you will find a list of products I am proficient in and help in planning, supporting, and troubleshooting.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Virtual Desktop Infrastructure
    Cluster Computing
    Microsoft SCCM
    Microsoft Hyper-V Server
    Microsoft Exchange Online
    Network Administration
    Office 365
    Microsoft Azure
    Microsoft Exchange Server
  • $70 hourly
    Hello, my name is Andrii. In my childhood, I spent a lot of time with a soldering iron, making different interesting things. At high school, I got a PC at home and started... Dos, Win, Linux, FreeBSD. At the present time, I have more than 20 years of Win experience and more than 16 years of *nix experience. I like to build systems and solve interesting issues. OS - FreeBSD, Linux (CentOS, Alma, Rocky, RHEL, Ubuntu, Debian, Gentoo, etc), Windows (3.1-2019) Virtualization - vSphere 5.x, 6.x. Standalone ESXi and clusters with SAN storages (iSCSI). KVM, Proxmox, oVirt. Veeam BnR, XSI-backup. VmWare Workstation, VirtualBox. Web servers - Apache, Nginx, Lighttpd, Tomcat DB servers - MySQL, MariaDB, Postgresql, MongoDB Mail - Postfix, Courier/Dovecot/Cyrus, Rspamd, Postgrey, Clamav, PostfixAdmin, SquirrelMail, Roundcube, Sendy, AWS SES. I have experience with WHM/cPanel, Plesk, VestaCP, Virtualmin, ISPmanager, but I don't like control panels (most projects are optimized for best performance, and there is no place for CP). If needed, I can learn and work with any control panel. Samba3+LDAP, Samba4 domains (about 500 user accounts, GPO, Roaming profiles, a lot of other stuff). Standalone samba servers. Docker, docker-compose, Jenkins, Ansible. FreeNAS, TrueNas. Squid (LDAP auth, AD auth, basic auth, Kerberos), FTP, SFTP, DHCPD, BIND, TFTP, DAViCal, tinc, mpd5, quagga, BGP, NFS, rsync, snapshot, rclone, Zabbix, SVN, GIT, Moodle, NextCloud, OnlyOffice, BigBlueButton, Caddy, etc. Dell servers, Dell PowerVault MD storages, HP servers, SuperMicro servers, and usual PC hardware. HP, 3Com, Dell switches, no Cisco experience. DD-WRT, including cross-compiling software from sources for this firmware for ARM arch. Shell, PHP scripting I have a lot of other expertise. Feel free to ask.
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    VMWare
    Virtualization
    LDAP
    Dovecot
    Linux System Administration
    FreeBSD
    MySQL
    PostgreSQL
    Postfix SMTP Server
    DNS
    NGINX
    CentOS
    Linux
    Ubuntu
  • $50 hourly
    "Hello, I am an experienced IT administrator with expertise in Microsoft 365, Windows server administration, Azure AD management, and more. With over 11 years of experience in IT administration and management, I have a proven track record of successfully managing complex projects and delivering high-quality results. Some of my key skills and experience include: Microsoft 365 Administration: Exchange, SharePoint, Teams, OneDrive, Microsoft 365 Defender Windows Server Administration: Active Directory, DNS, DHCP, Group Policy Azure AD Management: Conditional Access, SSO, Multifactor Authentication Intune Management and Microsoft Endpoint Manager Microsoft Azure Server Administration and Backup Center Firewalls, Antivirus, and Mail Gateways: Bitdefender, Barracuda, Webroot Backup Systems: Azure Backup, Datto, IDrive RMM Tools: Kaseya RMM, Logmein, Splashtop, ConnectWise, TeamViewer, AnyDesk, Autotask Ticketing Systems: Kaseya VSA, BMS, Rave, Autotask, ITarian, Atera Network Administration and Management: Firewalls, Access Points, Wireless APs, Printers, Scanners Amazon Web Services Administration: EC2, S3, Route 53 I have worked on a variety of projects in the past, including working for multiple MSPs and cloud service providers. In my work, I prioritize clear communication and collaboration with my clients to ensure that we are always aligned on project goals and timelines. If you are looking for an experienced IT administrator who can help you manage your technology infrastructure and ensure that your systems are running smoothly, please don't hesitate to reach out. I look forward to working with you!"
    vsuc_fltilesrefresh_TrophyIcon Windows Administration
    Microsoft Active Directory
    Technical Support
    Cisco Router
    DNS
    Office 365
    Cisco ASA
    Microsoft Exchange Server
    Windows Server
    System Administration
    Microsoft Teams
    Microsoft Office
    VPN
  • Want to browse more freelancers?
    Sign up

How it works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

At A Glance: Windows Administration

If your business could benefit from streamlined operations, browse our professional online workplace for freelance Windows administrators and system engineers. An expert can ensure that your Windows infrastructure is running smoothly, up-to-date, and essentially secure. In addition, they can research and install the latest technology to enable your company to continually move forward. Understanding and maintaining operating systems allows businesses to run smoothly and staff to efficiently fulfill their roles. These engineers are responsible for the upkeep and operation of the firm’s computer systems, servers, network equipment, and any other relevant IT infrastructure.

A Windows administrator will have the ability to proactively communicate within the business team, troubleshoot, and be resourceful. They will also possess extensive knowledge and practical experience in Windows operating systems, security firewalls, scripting, email infrastructure, domain security, and SCRUM, with the best of them certified as Microsoft Certified Systems Engineers.

An efficient administrator can safeguard the network within a particular business, set up any mail or other servers the organization requires, and ensure there is always an Internet connection. They are essential to the success of any business with complex computer systems.

Find freelance Windows system administrators and Microsoft network engineers on Upwork. Post your Windows administration project for free, and hire Windows experts today.

Schedule a call