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Based on 4,118 client reviews
Sorna K.

Dhaka, Bangladesh

$25/hr
5.0
1 jobs

Hello! I’m Sorna Kundu, Manager of Network & Systems Engineering, with over 13+ years of professional experience in the Internet Service Provider (ISP) and Telecom sectors. I specialize in designing, implementing, and operating secure, scalable, and high-availability network and server infrastructures for enterprise and service-provider environments. My expertise covers: Network Infrastructure – Advanced routing & switching using Cisco, Juniper, MikroTik, F5, Firewalls, and Cisco APIC (ACI) in complex production networks. Core Networking Technologies – Deep hands-on experience with TCP/IP, OSPF, BGP, MPLS, Traffic Engineering, L2VPN, L3VPN, routing policies, and QoS. VPN & Secure Connectivity – Site-to-Site VPN, Remote Access VPN, IPsec, and GRE over IPsec for secure and reliable inter-site communication. Server & Systems Engineering – Linux system administration (Ubuntu, CentOS, Debian), server deployment, DNS, DHCP, Web, Mail, and Database services, virtualization (VMware, Proxmox), storage, monitoring, backup, and high-availability solutions. Operations & Troubleshooting – End-to-end network and server troubleshooting, performance optimization, migration, and 24/7 production support. I have also worked on top OTT platforms in Bangladesh, including Toffee, T Sports, and Binge, where I supported high-traffic, low-latency streaming infrastructures serving millions of users. My role focused on ensuring service availability, scalability, and performance during peak viewership. Why Work With Me: ✅ End-to-end expertise in both network and server infrastructure ✅ Hands-on experience supporting OTT platforms at a million-user scale ✅ Expert troubleshooting and root-cause analysis ✅ Production-ready designs, not lab-only solutions ✅ Clear communication and professional delivery

  • Network Engineering
  • Computing & Networking
  • Juniper
  • MikroTik
  • VPN
  • Cisco ACI
  • Cisco Router
  • F5, Inc.
  • Firewall
  • Huawei AR
  • Linux System Administration
  • Storage Device
  • Server Virtualization
Ahmed M.

Alexandria, Egypt

$25/hr
5.0
28 jobs

👨‍💻 Experienced IT Lead | Cloud & DevOps | Infrastructure & Security Specialist With over 10 years of hands-on experience in cloud solutions, DevOps automation, and network infrastructure, I design and maintain reliable IT environments for multi-branch organizations. Skilled in Azure, AWS, DigitalOcean, Hetzner, Contabo, Vultr, Bluehost, and Hostinger, managing migration, integration, and automation between on-premises and cloud systems. Proficient with Docker, GitHub, CI/CD pipelines, API integration, and scripting in Python, PowerShell, and Bash to streamline deployments and automate operations. Experienced with VMware ESXi, Proxmox, and Windows Server (2012–2025) administration, including Active Directory, Group Policy, DNS, and DHCP. 📜 Certifications: ✔ 📘 ITIL® 4 Foundation Certificate in IT Service Management ✔ 🎓 CCNA Routing & Switching (Cisco Certified Network Associate) ✔ 🏆 MCSA Windows Server 2012 (Microsoft Certified Solutions Associate) ✔ 🏅 MCSE Core Infrastructure (Microsoft Certified Solutions Expert) ✔ 📡 Cisco Certified Specialist - Enterprise Core ✔ 🔐 Cyber Security Foundation (CSFPC) ✔ 🖥 Microsoft Certified Professional (MCP) 🛡 Network & Security Expert in firewalls (Sophos, pfSense, OPNsense, Mikrotik, DrayTek), VPNs (IPSec, WireGuard, SSL), and Cloudflare DNS/SSL security. Skilled in routing, VLANs, QoS, load balancing, and network monitoring for high-availability connectivity. 🏗 Systems & Virtualization Managing both Windows and Linux servers (Ubuntu, CentOS, Debian) with RAID, NAS/SAN, and backup solutions like Veeam. Experience in Proxmox VE, VMware, and Hyper-V environments. 📞 VoIP & Communication Administering Avaya, Asterisk, FreePBX, and Issabel systems, configuring SIP trunks, IVR, queues, and call recording for enterprise call centers. 🏢 ERP, CRM & Business Systems Managing Odoo, custom ERP deployments, and CRM integration to improve business workflow and data consistency. ☁ Remote & IT Management Using AnyDesk, Zoom, TeamViewer, and ManageEngine for remote support, monitoring, and ticketing. Experienced in IT procurement, inventory tracking, and documentation. 🎥 CCTV & Access Control Installing and maintaining IP/Analog CCTV, access control, and UPS power systems for secure and reliable infrastructure. 🚀 Passionate about cloud infrastructure, automation, and cybersecurity, with a proven record of optimizing enterprise networks and ensuring system uptime, stability, and security.

  • Network Administration
  • DHCP
  • Linux
  • Server
  • VPN
  • Cloud Services
  • Ecommerce Website
  • VoIP
  • Firewall
  • Proxmox VE
  • Server Virtualization
  • Systems Engineering
  • DNS
Anthony L D.

Portage, Indiana

$67/hr
5.0
32 jobs

I'm the Level III IT consultant who works for other MSPs and IT consultancies — the senior hand you bring in for the hard problems junior techs escalate: network redesigns, cybersecurity hardening, server migrations, and emergency triage. 30+ years in the trenches, U.S. Navy trained, Top Rated with a 100% Job Success score. Based in the Chicago area / Northwest Indiana, with remote and on-site coverage nationwide. Where I go deep: - Networking & Security: Design, configure, and secure networks with SonicWall, Fortinet, Cisco/Meraki, UniFi/Ubiquiti, TP-Link Omada, and Netgear — firewalls, VLANs, VPNs, 2FA/MFA, site-to-site bridges. - Servers & Hosting: Nearly 30 years of cPanel/WHM, DNS, POP3/IMAP, Microsoft 365, and Google Workspace; Apache/PHP/MySQL on RHEL/CentOS/AlmaLinux for reliable hosting and maximum uptime. - Systems & Cloud: Windows Server 2025, Windows 11, Linux, and macOS; Azure/Hyper-V virtualization and AWS/GCP deployments — from design through deployment and ongoing operations. - Microsoft Stack: Microsoft 365 administration and migration, Entra, Intune, and Active Directory Group Policy. Industry experience: HIPAA-compliant IT for medical/dental, Dealer Management Systems for automotive groups, secure corporate networks, and structured wiring and access control for warehouses. How I work: Precise and methodical. Project-based engagements first, hourly for smaller targeted work. I bring clear status updates and a bias toward documenting what I change, so the next person — internal or external — can pick up where I left off. I coordinate across internal IT teams, third-party vendors, and contract boards when an engagement requires it. Background: Self-taught IT professional since 1997; U.S. Navy Aircrewman, Patrol Squadron 26 (VP-26), 1990–1995, earning a Navy Achievement Medal for technical expertise on a classified surveillance system. Network Operations Center engineer at eSignal/Interactive Data, 2000–2007. Founded Ateki LLC in 2002. If you need a senior consultant who can redesign a network, harden security, migrate a server room, or own the escalations your team is stuck on — and who shows up, communicates, and documents — let's talk about your project.

  • Network Engineering
  • Computer Network
  • Computing & Networking
  • IT Support
  • Information Technology
  • Server Virtualization
  • Firewall
  • FortiGate Firewall
  • Network Security
  • Cybersecurity Monitoring
Nika B.

Tbilisi, Georgia

$25/hr
5.0
1 jobs

I design, troubleshoot, and automate network and infrastructure environments — from mixed-vendor enterprise networks to mail server delivery issues. Currently managing a multi-site production network across MikroTik, Aruba AOS-CX, and HPE Comware, tied together with WireGuard EoIP tunnels and a Prometheus/Grafana monitoring stack I built from scratch. Areas I help with: Network Design & Troubleshooting — robust topologies, complex routing/switching fixes across mixed-vendor environments Observability & Telemetry — custom dashboards so you can see what's happening on your network in real time Network Automation — Python scripts for metrics, repetitive tasks, and dynamic config pushes Virtualization & Deployments — virtualized network appliances, servers, automated imaging workflows Security & Packet Analysis — deep traffic log and packet capture analysis Mail & DNS — SPF/DKIM/DMARC fixes, DNS record management, Linux mail server troubleshooting Stack: Cisco, Aruba AOS-CX (VSF), HPE Comware, MikroTik · Ubuntu Server, Arch Linux · Prometheus, Grafana, SNMP Exporter, Wireshark, Zeek, Zui, NetworkMiner · Python (SSH automation) · Proxmox VE, KVM, FOG Project

  • Network Engineering
  • Computer Network
  • Computing & Networking
  • DevOps
  • System Administration
  • Prometheus
  • Grafana
  • Linux
  • VMware Administration
  • Proxmox VE
  • VPN
  • SMTP
  • Virtualization
  • Network Architecture
  • DNS
  • Email Deliverability
Hogr O.

San Diego, California

$85/hr
5.0
5 jobs

Sr. Network Engineer | MSP Owner | Wi‑Fi Design (Ekahau) | Microsoft 365 | VoIP | CCTV I’m a Senior Network Engineer with 15+ years of hands‑on experience installing, configuring, monitoring, and troubleshooting network infrastructure across medical, financial, hospitality, retail, and airline environments. I bring a rare mix of deep technical skill, field experience, and calm, professional communication—especially during high‑pressure cutovers and outages. As the owner of Zorro Link LLC, I support multi‑site businesses across California with enterprise‑grade network engineering, structured cabling, Wi‑Fi design, Microsoft 365 email deployments, VoIP systems, and security camera installations. Core Strengths Network installation, configuration, and troubleshooting Wi‑Fi design & validation using Ekahau Microsoft 365 email setup, migration & administration VoIP deployment (3CX, PBX, SIP, CUCM) System migrations & integrations Reporting, documentation, and client communication Backup, failover, and continuity solutions Calm, patient problem‑solving during critical incidents Network Engineering & Infrastructure Set up and configured routers, switches, firewalls, servers, and workstations Assisted remote teams with successful corporate network cutovers Tested and activated LAN/WAN circuits, broadband, and fiber connections Installed and supported Cisco, HP, Dell, Fortinet, SonicWall, UniFi, Aruba, Juniper Performed structured cabling, cable management, and rack‑and‑stack deployments Wi‑Fi Design & Ekahau Ekahau heatmaps, predictive design, and onsite validation AP placement, RF optimization, and interference mitigation Indoor/outdoor Wi‑Fi for warehouses, hotels, restaurants, and offices Microsoft 365 & Email Services Microsoft 365 tenant setup, domain configuration, DNS, MX/SPF/DKIM/DMARC Email migrations (IMAP, Exchange, Google Workspace → M365) User provisioning, security policies, MFA, and device management VoIP & Telecom 3CX, PBX, SIP trunking, CUCM, and VoIP endpoint configuration Network readiness testing for voice quality VLANs, QoS, and call‑flow optimization CCTV & Security Systems 10+ years installing IP cameras, encoders, DVR/NVR systems, surge protection Running analog/digital cabling, conduit, and structured pathways Camera mounting, NVR setup, and remote monitoring configuration Additional Technical Experience POS installation, PIN pad upgrades, pairing/IP configuration Media player installs, AV setups (100”–120” laser projectors) Gateway controllers, sensor calibration, freezer/restaurant IoT systems Decommissioning outdated equipment and documenting new deployments

  • Network Engineering
  • Network Design
  • Cisco
  • Cisco Certified Network Associate
  • Aruba
  • OSPF
  • Multiprotocol BGP
  • Virtual LAN
  • Ubiquiti
  • FTP
  • HTTPS
  • SNMP
  • Routing
  • Multiprotocol Label Switching
  • WiFi
Shafi U.

Jeddah, Saudi Arabia

$20/hr
5.0
15 jobs

IT Support Specialist with 10+ years of experience keeping networks, systems and end users running — most recently leading venue IT for a major international football tournament (AFC Cup 2026), and previously earning a Best Performance Award at Red Sea Mall Management. I help businesses fix what's broken and keep it that way: Microsoft 365 & Google Workspace administration, Active Directory, DNS/DHCP, firewall management, VPN setup, and day-to-day help desk support — remote or on-site. What I do: • Microsoft 365 / Google Workspace setup, migration & support • Active Directory & Microsoft Exchange administration • DNS, DHCP & network troubleshooting • Firewall, VPN & endpoint security support • Help desk & end-user support, remote or on-site Message me with what's broken or what needs setting up — I'll tell you exactly how I'd approach it before you hire me.

  • Network Administration
  • System Administration
  • DHCP
  • Microsoft Exchange Server
  • Office 365
  • DNS
  • Microsoft Azure
  • Microsoft Active Directory
  • Server Administration
  • Google Workspace Administration
  • Troubleshooting
  • Microsoft Outlook
  • Zoom Video Conferencing
  • Remote IT Management
  • Helpdesk
  • Technical Support

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Don't just take our word for it

Write a Job Description to Hire Network Administrators

Maintaining all the technology behind the scenes that makes an organization run is no small feat. IT needs fluctuate, change, and need constant monitoring and tweaking to stay at peak performance, which means it’s crucial to have a seasoned network administrator. This professional can ensure all these components—servers, data storage, Internet connections, user accounts, security protocols, email providers, firewalls, and more—are working in harmony like a well-oiled machine.

A network is your business’s lifeblood; when it goes down, so does your ability to be productive and provide a service to your customers. Ideally, you want a network that’s optimized to do what you need when you need it, with minimal downtime—and a network administrator is the professional trained to maintain that architecture for you.

“A system administrator is an essential member of a well-functioning company. System administrators ensure that all IT assets of a business work effectively, serving company employees best and streamlining company operations.” – System Administrator, A Secret Weapon to Keep a Software Company Organized

Businesses of all sizes need the help of a network admin at one point or another to maintain or expand their networks. And as businesses grow and change, so do requirements from their networks. While there are day-to-day tasks and incident response needs associated with network administration, you may need a dedicated network administrator for specific scenarios, whether that’s to help you scale up, overhaul, or switch services.

No matter what level of help you need, hiring a freelance network administrator is a cost-effective way to generate stability within your organization and help you develop confidence that the core of your business communication and data sharing will be reliable in times of high use and stress. Here’s a quick overview of what a network admin does and some tips for writing a job description that helps you find the best one for your needs.

Related:

What does a network administrator do?

Network administration specialists are highly trained computer information technologists with plenty of experience in maintaining, securing and diagnosing business networks.

A network administrator can provide your organization or business with a variety of services, whether they’re day-to-day, incident-based, or general improvements. What you need from a network admin will depend on the current phase of your network’s life cycle, whether it’s scaling up to meet new bandwidth requirements or in response to a recent security breach. They can include:

  • Network maintenance, and expansion
  • On-site server management and/or servers deployed in the cloud
  • Regular updates and maintenance to software, security systems, and software licenses
  • Security—which can include firewalls, email filters, vulnerability and penetration testing, installing and updating security systems, training users on best practices, etc.
  • System monitoring (for performance, security breaches, and data management practices)
  • Setting up users, email accounts, security protocols, endpoint security, etc.
  • Specific server operating systems (e.g., Windows, Cisco, etc.)
  • Wireless network implementation and communication protocols
  • Router management
  • Hardware updates and implementation, if required

Many organizations use an incident tracking system to flag, prioritize, and delegate network issues that need resolving. Depending on the size of the organization, network administration can be a sole person’s responsibility or can be divided up between people and teams.

A note about certifications

There are a number of industry-recognized certifications for systems/network administration that make it easier to note the skill level of a potential professional such as CompTIA certifications, Cisco certifications, and Microsoft Certified Solutions certifications. A good network admin won’t need to have all of these, but having up-to-date ones is a good indicator they’ve got current skills and will be able to help you set up a future-proof network, not one that will be outdated and prone to failure, requiring you to hire another network admin to make fixes behind them.

Defining your network administrator project

The first thing you should nail down is what you need the network admin to do. As mentioned above, what you need from a network administrator is going to largely depend on the size of your network and where yit is in its life cycle. Do you have an existing network but are experiencing some performance issues? If so, you’ll want a network administrator to run an audit that assesses the health of your system and to then provide a plan for upgrading, augmenting, and expanding your hardware and software to beef up bandwidth. You might just need a network pro to troubleshoot some issues, or update a few systems. Or, do you need a network admin to handle day-to-day support tickets?

Provide a full list of all of the hardware, systems, software and security measures you currently have in place. If possible, generate a report about network traffic, performance, and how many servers, offices, and end users you have. Give as much detail as you can (e.g., is your system LAN?); this will paint a picture of what the network admin will be working with, and provide context around your project description. Finally, briefly explain your goals. What do you need their help accomplishing? What are your end goals—better performance, better security, more bandwidth?

Finally, you’ll probably want to specify for certifications to make sure they’re qualified and their skills are up to date. Good ones to look for include Cisco CCIE, Cisco CCNP, and CompTIA Network+. While not mandatory, these help ensure you’re getting a network admin who’s using the newest best practices. If you’re setting up a new network from scratch, filtering out the “old dogs with old tricks” will ensure your network is future proofed—not merely a functional but outdated network that’s likely prone to failure.

Writing a network administrator project description

Now that you’ve clearly defined your project deliverables, it’s time to write your network administrator project description. The description will determine the quality of the system administrator you’ll attract, so be sure to include as much context and detail as possible.

Be clear and succinct in your title and include any relevant technology they should know in order to work within your system. If you have enough information to provide a set list of deliverables, include those with any hard and fast deadlines you may have. Also, provide information about how you’ll give the professional access to your systems.

Note: For security reasons, you may choose to be vague or open-ended when describing your project, which is fine—just be sure to provide enough context so the candidate knows if he or she is a good fit up front, and can respond with a detailed enough proposal.

Sample Project Description

Below is a sample of how a project description may look. Keep in mind that many people use the term “job description,” but a full job description is only needed for employees. When engaging a freelancer as an independent contractor, you typically just need a statement of work, job post, or any other document that describes the work.

Title: [Certified] Network Administrator Needed to Help Expand and Integrate Existing Network & Overhaul/Upgrade Security Protocols for Merger

Description:

We are a medium-sized (~115) advertising and PR agency that recently acquired a small pharmaceutical ad agency to ramp up our existing healthcare expertise and offerings. Our existing network is at capacity for users and data and has experienced some lags in performance lately. With our new acquisition, we’re looking to add more servers, expand our bandwidth, onboard the new users and integrate their data into our system. Most importantly, we’ll need to implement some new, tighter security measures to protect the sensitive data and communications of our new pharma clients.

Project Scope & Deliverables:

We need an assessment of our current system, a detailed plan for an overhaul of our architecture, and detailed suggestions for a new system. The merger will be finalized EOY ‘17 so we’d like to have an actionable plan in place and assistance with day-of migration of their systems to ours.

Additional: If phase one goes well, we’d love help with planning and implementing an employee training program on email, internet, device and data security best practices as we onboard new talent.

About Us:

We are Paddock Partners, a medium-sized PR and advertising firm with a growing specialty in healthcare and pharmaceutical advertising. Our recent acquisition of HealthStar Marketing will make us a fully equipped healthcare marketing agency able to take on high-profile drug and pharma clients with education, launch, OPDP approval, and more.