🔹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
Musheer Mansour Abdul Kareem M.
Sanaa, Yemen
$15/hr
5.0
2 jobs
ISP Network Engineer with 10+ years of experience in GPON, MikroTik, Linux, DNS, Email Infrastructure, and Hosting Operations.
I have more than 10 years of hands-on experience operating real production environments, including an FTTH network, MikroTik routing platforms, GPON OLT systems, SmartOLT automation, hosting infrastructure, and business email systems.
Recently received a 5-star Upwork review for DNS, Email Infrastructure, and Technical Operations support, with client feedback highlighting quality, problem-solving, and technical expertise.
My experience comes from real operational environments rather than lab-only setups. I work daily with customer provisioning, PPPoE services, network troubleshooting, DNS management, hosting infrastructure, and email delivery systems.
ISP & Network Operations
• MikroTik RouterOS Administration
• GPON OLT Administration (ZTE C620 / C650)
• SmartOLT Deployment & Automation
• ONU Provisioning & Troubleshooting
• PPPoE Services & Subscriber Management
• VLAN Configuration, Routing & Switching
• VPN & WAN Failover Solutions
• ISP Customer Provisioning & Operations
Linux, Hosting & DNS
• Ubuntu Linux Administration
• VPS & Hosting Management
• cPanel & WHM Administration
• DNS Troubleshooting & Migration
• Cloudflare Administration
• SSL Certificates
• Website & Email Migration
• WordPress Hosting & Troubleshooting
Email Infrastructure
• Microsoft 365 Administration
• Google Workspace Administration
• SPF, DKIM, DMARC & MX Records
• Email Deliverability Troubleshooting
• Email Routing & Forwarding
• SMTP Configuration
I focus on identifying root causes, solving technical issues efficiently, and building reliable solutions that work in real production environments.
Available for GPON, MikroTik, SmartOLT, Linux, DNS, Email Infrastructure, Hosting, WordPress, ISP Operations, and Network Troubleshooting projects.
Linux System Administration
VPN
Routing
TCP/IP
Network Administration
Telecommunications Engineering
API Development
MikroTik RouterOS
Twilio API
DNS
WordPress
Hosting Setup
Email Deliverability
API Integration
cPanel
Fiber Optics
GoDaddy
Google Workspace
Domain Migration
Jon Paul D.
Mabalacat City, Philippines
$20/hr
5.0
13 jobs
I help businesses build, optimize, and manage enterprise-grade contact center solutions using RingCentral and NICE CXone.
With 8,000+ hours worked and $100K+ earned on Upwork, I specialize in designing reliable IVR systems, intelligent call flows, routing logic, and customer support automation for both small businesses and large enterprises.
What I Can Help You With:
✔ RingCentral UCaaS & CCaaS setup and administration
✔ NICE CXone / InContact development and support
✔ IVR and call flow design
✔ Studio scripting and automation
✔ Omnichannel customer support solutions
✔ API integrations and workflow automation
✔ Technical troubleshooting and platform support
✔ Contact center optimization and reporting
✔ Post-implementation support, maintenance, and system optimization
Why Clients Work With Me:
✔ Certified and experienced contact center engineer
✔ Strong communication and project ownership
✔ Fast problem-solving and reliable delivery
✔ Able to manage projects from planning to deployment
✔ Ongoing support available after implementation
I focus on building scalable, user-friendly customer experience solutions that improve efficiency and customer satisfaction.
Let’s discuss how I can help your business.
Business with 10-99 Employees
Business with 100-999 Employees
Desktop Support
NICE
VoIP Administration
VoIP Software
inContact
Call Center Management
Avaya
Implementation
Implementation Plan
RingCentral Glip
Dialpad
Back-End Development
Front-End Development
Dan Emerson D.
Lapu-Lapu City, Philippines
$10/hr
5.0
15 jobs
I am an IT Support Specialist and Cloud Systems Administrator specializing in Infrastructure Operations. I bridge the gap between traditional hardware and modern cloud environments, ensuring your tech stack runs seamlessly without downtime.
From managing virtual servers to configuring enterprise workspaces and troubleshooting hardware bottlenecks, I handle your IT operations so you can focus on scaling.
🛠️ Direct Services & Expertise
Cloud & Infrastructure: Provisioning Virtual Machines (VMs), firewalls, Linux Server Administration (CLI maintenance), and Web/App Deployment.
Workspace & Identity: Full tenant setup and migrations for Microsoft 365 and Google Workspace, including user provisioning and access control.
Domain & DNS Management: Expert configuration via Cloudflare, nameserver routing, and vital email authentication (SPF, DKIM, DMARC) for flawless deliverability.
Desktop & Peripheral Support: Advanced hardware troubleshooting, network connectivity, and driver configuration for specialized/large-format enterprise printing.
🌟 Why Work With Me?
Full-Stack IT Support: I provide end-to-end technical coverage—from high-level cloud architecture and workspace administration to hands-on desktop software configuration and hardware troubleshooting.
Clear Communication: I deliver fast, reliable updates, translating complex technical infrastructure and hardware issues into clear, actionable terms for non-technical clients and executive teams.
🎯 Client Focus
I act as your complete, on-demand IT department for growing businesses and digital agencies.
Let's optimize your technology and operations today. Click "Invite to Job" to get started!
Graphic Design
Remote Connection Support
Hardware Troubleshooting
Computer Hardware Installation
Operating System
Troubleshooting
Software
Adobe Photoshop
Canva
Computer Maintenance
Laser Printer
Inkjet Printer
Dye-Sublimation Printer
Pushpendra Y.
Jaipur, India
$25/hr
4.9
507 jobs
I'm a linux sysadmin and have worked in a web hosting company for more than eight years and now doing a full-time sysadmin consulting. I handle servers from co-locations/data centers to different vps and cloud hosting providers such as Rackspace, Amazon, Linode, DigitalOcean, and Softlayer. I managed mostly lamp-stack servers on CentOS/RHEL and Debian/Ubuntu and several cPanel/WHM servers for shared hosting clients.
I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc.
Operating Systems:
- Servers: RHEL, CentOS, Debian, Ubuntu, openSUSE, solaris
Cloud and Hosting Providers:
- Manage instances deployed in Rackspace, Amazon, and Linode
- Manage dedicated servers in datacenter co-locations and Softlayer
Virtualization and Cloud technologies:
- Xen: setup, configure, and manage virtual machines running Debian and CentOS
-openvz : setup, configure, manage and migrate virtual machines running on CentOS
- OpenStack and Eucalyptus: setup, configure, and manage private cloud deployments
Hosting Control Panels:
- Manage multiple cPanel servers for shared hosting clients and services
- Previous experiences include Plesk, zpanel, directadmin, and Webmin control panels
DNS:
-- Manage DNS cluster on Cpanel DNSOnly versions. Manage zones hosted and integrated with Cpanel servers.
- Manage Bind DNS service on dedicated and Cpanel servers (WHM and DNSOnly
versions). Manage zones hosted at Softlayer and integrated with Cpanel servers
- Managed DNS from different hosting providers (Godaddy, NetworkSolutions, SRSPlus)
as well as migrating entire DNS/NameServers between different providers.
Backups:
- Cpanel Backups, and different rsync scripts (rsnapshot, rsback, rdiff), remote ftp backup.
- Administer backups from cloud providers such as AmazonS3 and Rackspace CloudBackup
Version Control Systems:
- Git: setup and manage dedicated git hosting server running Gitolite and Gitlab
- Github: manage organizations and private repositories. Setup deploy keys and webhooks
Alerts and Monitoring:
- Configure Nagios/opesview and cacti for servers and services monitoring
- Server graphing with NewRelic and Pingdom services. Previous work experience
includes Cacti, Graphite, MRTG, and PRTG.
Drupal CMS Administration:
- Managed Drupal 5,6, and 7 sites on LAMP-stack from different hosting providers
- Drupal server and site performance evaluation, tuning, and optimizations
- Setup and configure Drupal integration with CiviCRM, ApacheSolr/Tomcat,
Memcached, APC, and Varnish
- Applies Drupal standard and security updates on different site environments
Server Security:
- Experienced with setting up PCI Compliant servers. Scanning tools include dedicated
Nessus server and third-party scanner like Trustwave and ControlScan
- Setup and manage firewall rules with iptables, ufw, configserver firewall (csf),
Rackspace RackConnect, AWS SecurityGroups, dedicated firewall devices.
- Rkhunter, Chkrootkits, SSHD, TCP Wrapper, fail2ban.
Google Cloud Platform
PCI
LAMP Administration
OpenVZ
AWS Systems Manager
Linux System Administration
Apache Administration
cPanel
Plesk
Web Host Manager
Nevin D.
Chalakudy, India
$20/hr
4.9
802 jobs
I'm Nevin Davis, I have a degree and diploma in Computer Science and Engineering. I'm a redhat certified engineer with 8 years of experience as a server administrator.
My strengths and skills are:-
* Well knowledge in AWS, Google Cloud, Azure... etc
* Sound knowledge in Linux/Unix like operating system.
* Deep knowledge in cPanel/WHM.
* Familiarize with Plesk, Interworx, Website Panel, Webmin, Directadmin, CyberPanel, HestiaCP.
* Automated installation of Red Hat Enterprise Linux.
* Network configuration and troubleshooting.
* Server hardening.
* Managing partitions and file systems.
* Managing flexible storage with LVM.
* User Management & Administration.
* Managing selinux.
* Basic creation and troubleshooting on scripting like Shell/Perl.
* Installing and managing softwares.
* Managing installed services.
* Kernel re-configuration & parameter tuning.
* Installation of patches and packages.
* File sharing with FTP.
* NFS configuration & administration.
* Job Scheduling and Automating process using CRON.
* XEN, OpenVZ virtualization.
* RAID
* Idera Back up server management.
* Familiarize web servers- Apache, Litespeed, Nginx.
* Deep knowledge in SolusVM.
* Migration.
* SSL Cert generation, installation.
* IPMI, KVM console management.
* Billing Module Management(whmcs,vision,osticket)
* VPS, Shared and Dedicated server Management
* Monitoring (Nagios) & troubleshooting with performance related issues.
* Installation of Antivirus and Troubleshooting with virus related issues.
WordPress
cPanel
OpenVZ
Domain Migration
Red Hat Administration
WHMCS Development
SSL
Linux System Administration
CentOS
Web Host Manager
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