Musheer Mansour Abdul Kareem M.

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.