Hire the Best Zabbix Specialists

Specialist with deep expertise in pfSense firewalls, Proxmox VE and Hyper-V virtualization, Docker containerization, Kubernetes orchestration, and DevOps practices. CCNA, CCNP, and CCIE certified with Top-Rated status and 100% Job Success Score. I've successfully deployed high-availability clusters, enterprise firewalls, container platforms, and DevOps infrastructure for organizations globally across AWS, Azure, GCP, Hetzner, and Digital Ocean. 🔥 Network Security & Firewall Services - pfSense/OPNsense deployment and optimization - VPN solutions: IPsec, OpenVPN, WireGuard, site-to-site and remote access - Enterprise network design and security - Cisco/MikroTik/Ubiquiti network equipment management - IDS/IPS with Snort and Suricata - Traffic filtering and QoS for VoIP - Bandwidth management and network monitoring with Zabbix - Cloud-based firewall deployments - For advanced network security requirements, please message for consultation 💻 Virtualization & Container Services - Proxmox VE high-availability clustering with ZFS/Ceph storage - Proxmox Backup Server integration - Hyper-V enterprise deployments with failover clustering - VM migration: VMware to Proxmox, P2V, Hyper-V migrations - Performance optimization and capacity planning - Disaster recovery and backup strategies with Veeam - Docker containerization with Compose and Swarm - Kubernetes cluster deployment and orchestration - Infrastructure as code with Terraform - For complex infrastructure projects, please message for consultation 🚀 DevOps & Automation Services - CI/CD pipeline setup and integration - Docker container deployment and optimization - Kubernetes orchestration and scaling - Infrastructure as code with Terraform - Automated deployment workflows - Container registry management - Microservices architecture implementation - GitLab CI, Jenkins, and GitHub Actions integration - For DevOps transformation projects, please message for consultation 🌐 Cloud & Hybrid Infrastructure Services - Multi-cloud deployments across AWS, Azure, GCP, Hetzner, and Digital Ocean - Hybrid connectivity solutions connecting on-premise to cloud - Cloud-based pfSense deployments - VM network security and POS/ERP system security - Software-defined networking (SDN) - For enterprise-scale cloud architectures, please message for consultation 🎯 Why Work With Me Top-Rated with 100% Job Success Score and Cisco certifications (CCNA, CCNP, CCIE). I deliver scalable, secure infrastructure backed by documentation and ongoing support. For complex deployments, HA configurations, or enterprise migrations, I provide comprehensive consultation and architecture services. ✅ Ready to Discuss Your Project? Tell me about your infrastructure needs and goals. I'll respond with a strategic approach and implementation plan. For larger projects, let's schedule a quick Zoom call to ensure alignment on scope and deliverables. 🌐 Available for project-based work and ongoing infrastructure management ⚡ 24/7 monitoring and support plans available

I have 14 years of experience in system administration and specialize in deploying and administering a whole bunch of Windows and Linux services that are used in most enterprises including Hyper-V/KVM/Proxmox hypervisors, Docker containers, web/mail/proxy/file/database/print/backup/VPN servers, VOIP solutions, monitoring systems and many others as well as managing switches, routers, Wi-Fi access points and other network devices I have MCSE Server Infrastructure and CCNA Routing and Switching certifications

Hello, Thanks for visiting my profile. This is Abid Ur Rehman, a certified Asterisk Developer DCAP, VoIP Consultant, VICIDial, FreePBX SCE, 3CX v18 and v20 Certified Advanced Engineer, Elastix ECE, GoAutoDial, The SIP School SSCA, PBXWare, A2Billing, FreeSWITCH, Twilio, FusionPBX, ASTPP, Network CCNA, Windows Servers MCSE, and Linux RHCE certified expert. I graduated with a BS in Telecommunication and an MSc in Telecommunication Networks. Having over 13 years of VoIP/Linux/IT/network planning, design, development, deployment, optimization, administration, and support experience in top-notch organizations such as Telappliant Ltd., Cybergen, SCB Global, Dialer360, and Primo Dialer. Skills and Certification: IP PBX: 3CX, Asterisk, FreePBX, Elastix, PBXware MT, FreeSWITCH, FusionPBX, Issabel, VoIPOffice AI Agents/Integration: ElevenLabs, Vapi SMS Blast/Broadcast using SignalWire, VoIP.ms, Telnyx, Anveo, Bandwidth.com, Plivo, Skyetel, Twilio, VoxTelesys, BulkSolutions, Flowroute, Intelepeer, and BulkVS Telecom Billing: A2Billing, ASTPP, VOS3000, and Magnus Billing. Dialer: VoiceBroadcast, VICIDial, GoAutoDial, VICIBox Multi-Server Clustering, Dialer360, Primo Dialer IP Phones: Aastra, AND phone, Algo, AudioCodes, Cisco, Cisco/Linksys, CloudTC, Cortelco, CyberData, Digium, H-Tek, Incom, Intelbras, Konftel, Mocet, Norphonic, Obihai, Panasonic, Patton, Phoenix Audio, Polycom, Snom, Thomson, Unidata, Uniden, VTech, Xorcom, Yealink, Yealink/Dreamwave IP PBX (hardware): Sangoma PBXact UC / FreePBX, Elastix IP PBX, Grandstream UCM, Yeaster S-series, Renegadepbx-1U-Appliance-with-FreePBX, Patton's gateways VoIP Providers: USA and Canada: Twilio, VoIP.ms, Switch2VOIP, SignalWire, Anveo, Alcazarnetwork, voxbeam, Telus, RingCentral, Call Centric, Voyant (Vitelity), Nextiva, bandwidth.com, Altotelecom, FlowRoute, QuestBlue, sip.us, DIDLogic, Nexmo, Plivo, siptrunk.com, Telnyx, IDTExpress, Zadarna SMS and Bulk SMS: I can write code for you to send and receive SMS using any Asterisk and FreeSWITCH server and through popular providers like Telnyx, Twilio, Bandwidth.com, VoIP.ms, and SignalWire. For bulk SMS, I can set up a code with the front end for sending bulk SMS from a CSV . UK: Fuse 2, BT, VoIPTalk, DrayTEL, Telappliant, Gamma, sipgate, VoIPFone, VoiceFlex, Voicehost, Brightstar, Yellowgrid, Gradwell, T4com Ltd, Voxbeam, and Spitfire Linux Distros: CentOS, Redhat EL, Ubuntu, OpenSUSE, Debian, Back Track (Kali Linux) Windows machines: Windows Server 2012 and 2016, Windows Desktop 11, 10, 8, 7, and XP. Cloud Platforms: AWS EC2 and LightSail, GCP, Vultr, BlueHost, HostGear, Hetzner, and Digital Ocean Coding: PHP, MySQL, Lua, XML, JSON, HTML I would be very happy to assist start-ups as well as SMEs in achieving their goals and business objectives. Thank you!!

I'm a seasoned System Administrator and Network Engineer with over 20 years of experience in Linux systems, automation, and network infrastructure. I specialize in secure server environments using Ansible, Docker, and GitLab CI/CD, and have deep expertise in MikroTik, VPNs (WireGuard, StrongSwan), OpenLDAP, Asterisk, and monitoring systems like Zabbix. I also develop backend tools and Telegram bots in Python. I’ve worked on crypto-related projects, including payment gateways and infrastructure for Bitcoin and Ethereum. I'm reliable, remote-friendly, and ready to deliver well-documented, scalable solutions for your project.

I’m a Systems Engineer with 10+ years of experience specializing in VoIP, Linux infrastructure, and enterprise call center solutions. I help businesses build, optimize, and troubleshoot high-performance dialing systems, especially VICIdial and Asterisk environments. If you're dealing with low contact rates, “Spam Likely” issues, or unstable VoIP systems, I can help you fix and improve them. I’ve supported mission-critical systems for global organizations, including the New York Stock Exchange, where reliability, uptime, and fast incident response are critical. What I Can Help You With - VICIdial / Asterisk setup, troubleshooting, and optimization - Outbound dialing improvement (increase contact rates / call rates) - Fix “Spam Likely / Scam Likely” call issues - DID rotation, CNAM, STIR/SHAKEN compliance - VoIP infrastructure design and deployment - SIP trunk configuration and carrier troubleshooting - Linux server administration (CentOS, Ubuntu, Debian, OpenSuse) - L2/L3 support and root cause analysis - System monitoring, uptime improvement, and performance tuning - Cloud deployments (AWS, DigitalOcean, Vultr) - Key Achievements - Deployed 100+ VICIdial/Asterisk systems globally - Improved dialing performance and answer rates for multiple call centers - Reduced call blocking and spam tagging through reputation management strategies - Maintained high uptime for production VoIP environments - Supported enterprise-grade infrastructure and financial systems Professional Experience Technical Support Specialist (VoIP & Systems) Augutech (Remote) | 2022 – 2026 - Led VoIP support and outbound dialing optimization - Reduced spam tagging and improved call deliverability - Performed deep L2/L3 troubleshooting and root cause analysis Systems Engineer / Administrator uBind (Remote) | 2019 – 2021 - Managed cloud and on-prem infrastructure - Automated deployments and monitoring systems - Improved system reliability and recovery processes Freelance VoIP & Systems Engineer 2010 – 2019 - Built and deployed call center systems worldwide - Specialized in VICIdial optimization and infrastructure design Skills - VICIdial, Asterisk, FreePBX, FusionPBX - Linux System Administration (RHEL, CentOS, Ubuntu, OpenSuse) - Hypervisor: VMware ESXi , Proxmox , Hyper-V - VoIP, SIP, RTP, IVR, Call Routing - Cloud (AWS, Azure, DigitalOcean, Vultr) - Bash, Python, Perl, PHP - MySQL, MariaDB - Network & Infrastructure Troubleshooting Why Clients Hire Me - I don’t just fix issues, I improve performance - Strong focus on real business outcomes (contact rate, uptime, reliability) - Deep hands-on experience with real-world call center problems - Fast, reliable, and easy to work with remotely

Telecommunications and Network Engineer with over 10 years of practical experience in ISP operations, FTTH networks, GPON systems, MikroTik RouterOS, Linux servers, DNS, hosting, and email infrastructure. My background comes from working in real ISP environments where network stability, customer connectivity, and service availability are part of daily operations. I currently work with an FTTH network serving more than 500 active subscribers and manage the systems required to keep services running reliably. I am currently involved in the operation and development of the UFibers platform, supporting ISP infrastructure, customer provisioning systems, billing integrations, network operations, DNS services, hosting environments, and customer support systems. In addition to network operations, I actively manage production hosting and email environments for UFibers, including domain management, DNS administration, Microsoft 365, email routing, cPanel hosting, SSL certificates, WordPress hosting, email accounts, aliases, forwarding rules, SPF, DKIM, DMARC, MX records, and troubleshooting email delivery issues. This hands-on experience comes from operating live business systems and customer-facing services rather than lab environments. 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 daily work includes customer provisioning, PPPoE service management, network troubleshooting, outage investigation, OLT administration, DNS management, email infrastructure support, hosting administration, and maintaining operational systems used by both customers and support teams. I have hands-on experience with ZTE C620 and ZTE C650 GPON OLT platforms, MikroTik routing environments, SmartOLT automation, Blesta billing systems, Linux servers, and customer service provisioning workflows. Technical Experience • MikroTik RouterOS Administration • ZTE C620 and ZTE C650 GPON OLT Management • ONU Provisioning and Troubleshooting • SmartOLT Deployment and Administration • Blesta Billing and Service Automation • PPPoE Services and Subscriber Management • VLAN Configuration, Routing, and Switching • VPN Deployment and WAN Failover Solutions • ISP Operations and Customer Provisioning • Network Monitoring and Troubleshooting • Linux Server Administration (Ubuntu) • VPS and Hosting Management • cPanel and WHM Administration • DNS Configuration and Troubleshooting • Cloudflare Administration • SSL Certificate Installation and Renewal • Google Workspace Administration • Microsoft 365 Administration • Email Infrastructure Support • SPF, DKIM, DMARC, MX, and DNS Records • WordPress Migration and Troubleshooting • Website and Email Migrations • API Integrations and Service Automation Recent Work • Managing and maintaining an FTTH ISP network serving more than 500 subscribers. • Operating ZTE GPON infrastructure using C620 and C650 OLT systems. • Managing MikroTik routing environments, subscriber authentication, and service delivery. • Integrating SmartOLT with Blesta to automate provisioning and service management processes. • Supporting the UFibers ISP platform, including customer systems, billing integrations, hosting infrastructure, and network operations. • Troubleshooting DNS, SPF, DKIM, DMARC, MX, and email delivery issues for hosted domains. • Managing Linux servers, VPS infrastructure, hosting environments, and customer-facing services. • Performing website, hosting, DNS, and email migrations while minimizing service interruption. I enjoy troubleshooting technical problems and finding the root cause rather than applying temporary fixes. My focus is on building solutions that are stable, practical, and suitable for real production environments. Available for MikroTik, GPON, SmartOLT, Blesta, Linux administration, DNS management, email infrastructure, hosting support, WordPress migrations, ISP operations, and network troubleshooting projects.