Experienced System Administrator with expertise in Windows and Linux administration, Identity and Access Management (IAM), virtualization, cybersecurity, infrastructure monitoring, and cloud-native technologies including Docker and Kubernetes. Passionate about building secure, reliable, and modern IT infrastructure.
Core Expertise
Identity & Access Management (IAM): Okta, Keycloak, and Microsoft Entra ID
Enterprise Infrastructure: Windows Server, Linux (Ubuntu), Active Directory, GPOs, and M365.
Cloud-Native & DevOps: Docker, Kubernetes, Git, and automation via Ansible & Bash.
Virtualization: VMware, Hyper-V, Proxmox, and KVM deployment.
Security & Monitoring: Wazuh threat detection, Grafana, Prometheus, and Cloudflare.
I can help with system administration, IAM, security, infrastructure monitoring, and Linux or cloud-native environments, delivering reliable and secure solutions.
System Administration
Linux System Administration
Windows Server
Microsoft Active Directory
User Identity Management
Network Administration
Docker
Kubernetes
Bash
Microsoft Azure Administration
Cloudflare
Ansible
IT Infrastructure
Technical Support
Virtualization
Server Administration
Network Security
VMWare
Microsoft Azure
Waqas Q.
Islamabad, Pakistan
$35/hr
4.9
37 jobs
Top Rated Plus IT Professional with 15+ years of enterprise experience helping businesses design, troubleshoot, secure, and optimize networks, Microsoft 365 environments, Windows servers, VPNs, and cloud infrastructure.
I have worked with leading organizations including Accenture, Hewlett Packard (HP), Cisco, and Australian Managed Service Providers such as BaseHost, MACIT, and Easy Internet Services, supporting businesses ranging from small offices to large enterprise environments.
I specialize in helping businesses keep their IT infrastructure secure, reliable, and running efficiently through proactive support and practical solutions.
Core Expertise
Managed IT Services (MSP)
Level 1–3 Help Desk Support
Microsoft 365 Administration
Active Directory & Entra ID
Windows Server Administration
Windows 10/11 & macOS Support
User Onboarding & Offboarding
VPN Configuration & Troubleshooting
Printer & Peripheral Support
Remote Desktop Support
Email Migration & Administration
Networking
Cisco Routing & Switching
Enterprise Wireless (Cisco & Aruba)
VLANs, STP, OSPF, BGP
VPN & Site-to-Site Connectivity
Firewall Configuration
DNS, DHCP & TCP/IP
Cisco Meraki
Network Troubleshooting
Network Documentation
Cloud & Infrastructure
Microsoft 365
Exchange Online
SharePoint
Teams
Intune
Azure Fundamentals
Google Workspace
Virtual Machines
Backup & Disaster Recovery
Automation
Python for Network Automation
Ansible
Network Monitoring Scripts
Configuration Automation
Operational Reporting
Process Automation
Services I Offer
✔ Microsoft 365 Administration
✔ Windows & macOS Support
✔ Active Directory & Entra ID
✔ Network Troubleshooting
✔ VPN Setup & Support
✔ Cisco Networking
✔ Firewall Configuration
✔ Python Network Automation
✔ WordPress Support
✔ Technical Documentation
✔ Remote IT Support
VPN
Python
Virtual LAN
IPv6
Cisco Router
ITIL
JNCIA-Junos
Network Engineering
Cisco IOS
Aruba
Ansible
Juniper
Cisco Certified Network Associate
Imam D.
Karachi, Pakistan
$20/hr
5.0
65 jobs
Network & VPN Engineer with hands-on experience in VPN deployment, network monitoring solutions, infrastructure support, and troubleshooting. Skilled in OpenVPN, CloudConnexa, Fortinet, MikroTik, Zabbix, SolarWinds, and Cacti.
I help businesses with:
OpenVPN & CloudConnexa setup
Remote access and site-to-site VPNs
Zabbix, SolarWinds & Cacti deployment
Network monitoring and alerting
Firewall and routing troubleshooting
Server and network infrastructure support
Secure remote connectivity solutions
Focused on delivering reliable, secure, and practical solutions with clear communication and quick support for clients worldwide.
Network Administration
Network Engineering
VPN
OpenVPN
Fortinet
MikroTik
PfSense
Firewall
Zabbix
SolarWinds VoIP & Network Quality Manager
Cacti
Network Monitoring
Windows Server
Linux
TCP/IP
Routing
Technical Support
IT Infrastructure
Flavio Y.
Brighton, United Kingdom
$65/hr
5.0
11 jobs
🔹SENIOR NETWORK ENGINEER | NETWORK SECURITY, PRIVATE CLOUD & INFRASTRUCTURE🔹
Senior Network Engineer with 6+ years of experience designing, securing, and operating enterprise networks, private clouds, and IT infrastructure. I've built private clouds for clients of a global managed hosting provider with presence in 10+ data centers and over 2 Pbps of global uplink capacity, and delivered network and security solutions across a wide range of enterprise environments.
Whether you're designing new infrastructure from scratch, upgrading and modernizing an existing network, hardening your security posture, or migrating workloads to the cloud, I bring senior-level engineering with a focus on clean design, security, and long-term reliability.
🌐 Network Engineering & Design
Enterprise, data center, and multi-site network design and upgrades.
Routing: BGP, OSPF, EIGRP, IS-IS, MPLS, VXLAN
Switching: VLANs, STP, LACP, MLAG, VRRP, HSRP, QoS, EVPN-VXLAN fabric
Load Balancing: HAProxy, NSX-T, NSX-V
🔐 Network Security & Firewalls
Vendors: Fortinet (FortiGate), Palo Alto, Juniper SRX/vSRX, Sophos (UTM, XGS), SonicWall, Zyxel, pfSense, OPNsense
Services: NGFW rules, NAT, segmentation, IPS/IDS, DDoS mitigation, Zero Trust
☁️ Private Cloud & Virtualization
Hypervisors: VMware (ESXi, vCenter), Proxmox, Hyper-V, KVM, Xen
Virtual networking & security: VMware NSX-T / NSX-V, pfSense, OPNsense, Sophos
🌩️ Cloud & Hybrid Networking
AWS: VPC, Transit Gateway, Site-to-Site VPN, Security Groups, hybrid connectivity
Also experienced with Azure, Vultr, DigitalOcean, Linode
🔗 VPN & Secure Remote Access
IPsec, OpenVPN, WireGuard, SSL VPN, GRE, L2TP, DMVPN, SD-WAN
Enterprise VPNs, hybrid cloud connectivity, secure remote workforce
📡 UniFi / Ubiquiti Deployments
UniFi network design and deployment for offices and multi-site businesses
UniFi switches, access points, gateways, Dream Machine
🧰 Vendors & Platforms
Cisco (Catalyst, Nexus, Meraki, ISR, ASR), Juniper (MX, vMX, EX, QFX, SRX), Huawei (CloudEngine), Fortinet, Palo Alto, Sophos, SonicWall, Zyxel, Ubiquiti/UniFi, VMware
⚙️ Automation, Monitoring & Documentation
Automation: Python (Netmiko, NAPALM), Ansible, Terraform, REST APIs
Monitoring: PRTG, Grafana, LibreNMS, Zabbix, Cacti, FastNetMon
Documentation & IPAM: NetBox, phpIPAM
🐧 Linux
Ubuntu, Debian, CentOS, FreeBSD, OpenBSD
📜 CERTIFICATIONS
Cisco: CCNP, CCNA
💼 SERVICES
• Network Design & Optimization (Enterprise, Data Center Fabric, Private Cloud)
• Firewall & Security Hardening (NGFW, IPS/IDS, Zero Trust)
• Private Cloud Build & Migration (VMware, Proxmox)
• Cloud & Hybrid Networking (AWS VPC, Transit Gateway, Site-to-Site VPN)
• VPN & Secure Remote Access (IPsec, SSL, SD-WAN, WireGuard)
• UniFi Network Design & Deployment
• Network Troubleshooting & Performance Tuning
• Network Automation & Monitoring (Ansible, Python, APIs)
Network Engineering
Computer Network
Computing & Networking
Virtualization
VMware Administration
VMWare
DevOps
Juniper
Firewall
Cisco
VMware NSX
VMware ESX Server
VMware vSphere
Ubiquiti
Fortinet
Hosting Setup
Cloud Security
Cloud Migration
Cloud Architecture
IT Infrastructure
Shafi U.
Jeddah, Saudi Arabia
$20/hr
5.0
13 jobs
"Is your team losing hours to IT issues? I provide fast, reliable remote support resolving tickets, fixing network issues, and keeping systems running smoothly. I provide expert-level technical support for desktops, networks, and software. With over 10 years of experience, I have helped businesses streamline their IT operations. Let’s solve your tech challenges today!"
Remote Desktop & Network Troubleshooting
Office 365 / Google Workspace Setup & Support
Microsoft Exchange & Active Directory Administration
VPN Configuration & Security Support
Software Installation, Maintenance & Support
DNS, DHCP, and Server Management
Firewalls, IDS, and antivirus systems
IT Helpdesk & End-User Support
System Administration
DHCP
Microsoft Exchange Server
Office 365
DNS
Microsoft Azure
Microsoft Active Directory
Server Administration
Office Administration
Troubleshooting
Microsoft Outlook
Zoom Video Conferencing
Windows 11 Administration
Remote IT Management
John A.
Richland, Washington
$75/hr
5.0
47 jobs
I am an IT professional with experience in several domains. I work approximately 25 hours per week for a manufacturing company, managing infrastructure, and allocate time to honing my skills within the freelance market.
One of the managers I have worked with calls me a "Truffle Pig" meaning I enjoy rooting out problems and finding solutions.
"Let's transform your IT challenges into opportunities. Message me to begin the conversation!"
Key Skills:
IT Infrastructure Management
Cloud Deployment (VMWare, Hyper-V)
Network Engineering (Cisco, EMC)
Systems Administration (Windows & UNIX)
Project Design & Implementation
Troubleshooting & Problem-Solving
Below is an overview of my background and experience.
I provide services as an IT Systems and Network Engineer and Administrator. With over 29 years of experience spanning a wide range of skills, including project design and implementation, I have experience working in both Windows and UNIX environments. My background covers general IT knowledge, with ongoing efforts to expand my skillset. I have worked with various vendors, particularly those specializing in medical and enterprise systems. My experience includes troubleshooting, research, and providing support across different teams.
Project Highlights:
• Led deployment of private cloud and IT system upgrades; served as subject matter expert. Functioned as Systems/Network Administrator for a public health district hospital, responsible for setup, automation, and monitoring of a private cloud environment.
• Managed transition from legacy systems to new infrastructure; deployed and administered monitoring and management systems; handled special projects, including testing and deploying new systems, addressing longstanding issues, and overhauling monitoring and asset tracking systems. Oversaw transitions to a High Availability “A side/B side/C remote BDR” Data Center design, resulting in improved system reliability and reduced manpower needs.
• Served as consultant for a public health district hospital to deploy a private cloud.
• Deployed and configured a private cloud based on Cisco UCS/EMC VNX/Hyper-V/VMWare VSPEX reference platform for a regional hospital. Collaborated with employees and vendors to complete the project and was later retained to improve existing IT systems (including SNMP monitoring, Syslog, Helpdesk, security, and maintenance automation). These changes enhanced network reliability and reduced management effort.
• Managed cloud-based application development projects as project manager and technical lead.
• Acted as Systems Administrator/Engineer for deployment and integration of cloud-based applications with mobile and local systems. Researched, selected, and integrated cloud-based products to create an IT services management solution using Autotask, N-Able, QuickBooks, StoreGrid, and Channel Online for an MSP provider. The final implementation addressed quoting, ticketing, purchasing, billing, and time management, involving collaboration with consultants and technicians for integration and training.
• Oversaw replacement of existing PACS/RIS solution with RAMSoft PACS/RIS solution.
• Coordinated with multiple vendors and providers to facilitate hardware removal and installation, as well as software integration across eleven vendors. Completion occurred on schedule and within budget, with minimal impact on office operations. Managed HIPAA meaningful use EMR and specialty procedure management system upgrades and deployments.
• Led upgrade and deployment of multiple VMWare server solutions for specialty medical offices.
• Solutions incorporated various hardware and software, such as Windows Server, Small Business Server, SQL, Linux, VMWare, Proxmox, Cisco hardware, Qnap, HP, Dell, and StoreGrid. Supported medical software including GE Centricity EMR and Practice Management, GMed GGastro, Maximeyes, Paragon among others. Determined optimal upgrade paths, reducing project costs while meeting client requirements. Utilized VMWare and redundant servers to reduce costs by more than 30%, maintaining performance and reliability. Delivered a complete solution with email server and backup/disaster recovery at lower cost compared to competitor estimates. Identified and addressed key performance bottlenecks to ensure responsive, reliable local and offsite backup and disaster recovery systems.
High Availability and Disaster Recovery
Network Monitoring
Network Administration
Storage Area Network
Windows Administration
Network Design
Microsoft Hyper-V Server
Microsoft Windows PowerShell
Cloud Computing
Troubleshooting
Email Deliverability
VMware vSphere
Tech & IT
VPN
Amazon Web Services
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