Hire the Best FreePBX Specialists
in Bangladesh

Cloud Infrastructure and Platform Engineering professional with extensive experience in designing, deploying, and managing enterprise-scale cloud platforms and mission-critical infrastructure. Expertise in OpenStack, Kubernetes, virtualization, software-defined storage, Linux, automation, and cloud networking. Certification: 🥇 Certified Kubernetes Administrator (CKA) 🥇 Red Hat Certified Engineer (RHCE) 🥇 Red Hat Certified System Administrator (RHCSA) 🥇 Red Hat Certified Specialist in Virtualization (RHCVA) Skills and Specialties: ✅ Virtualization & Cloud: OpenStack, Proxmox, Docker, Kubernetes, KVM, AWS ✅ Storage: Ceph, TrueNAS, ZFS, GlusterFS, iSCSI, NFS ✅ Cloud Networking: OVN, OVS, VXLAN, VPN, Load Balancers, Firewalls, GSLB ✅ Automation & DevOps: Ansible, Bash, Terraform, Git, CI/CD ✅ Monitoring & Observability: Zabbix, Prometheus, Grafana, Alertmanager, Node Exporter, ELK ✅ Infrastructure Services: DNS, NTP, Mail Systems, Web Servers, cPanel/WHM ✅ VoIP: Asterisk, FreePBX, Vicidial, Voice Gateway, SS7 Media Gateway

I'm a VoIP, Network & Security Engineer with over 10 years of hands-on experience building, managing, and securing enterprise and carrier-grade infrastructure. I've worked in the core network of one of Bangladesh's largest ISPs — designing solutions that handle real scale, real traffic, and real uptime requirements. I specialize in the full range of VoIP platforms — from SMB-focused systems like 3CX and FreePBX to carrier-grade switching and billing platforms including PortaOne (PortaSwitch, PortaBilling) and Telinta (TeliCore). If you're a VoIP provider, MVNO, or wholesale carrier needing a scalable multi-tenant platform, class-5 softswitch, or prepaid/postpaid billing setup, I can help you design, deploy, and maintain it. I also provide full US telecom regulatory compliance support — including STIR/SHAKEN implementation for call authentication and 10DLC (10-Digit Long Code) registration for A2P SMS campaigns. Whether you're a CPaaS provider, VoIP operator, or business needing compliant SMS messaging, I handle brand registration, campaign vetting, TCR submission, and carrier approval — keeping you out of filtering and in line with FCC and CTIA requirements. Beyond voice, my expertise covers the full network stack: BGP/OSPF routing, MPLS, firewall hardening with Fortigate and Sophos, IPsec/GRE VPNs, and cloud deployments on AWS and Azure. What you can expect: clear communication, documented deliverables, and no surprises. I scope projects carefully, flag issues early, and stay available through go-live and beyond. Telecom platform support: PortaOne (PortaSwitch · PortaBilling · PortaSIP) · Telinta (TeliCore softswitch · hosted VoIP · calling card billing) · FusionPBX · Asterisk · FreePBX · 3CX — from initial provisioning and trunk configuration to billing plan setup, DID routing, and ongoing admin. Regulatory & compliance: STIR/SHAKEN (SHAKEN attestation, STI-CA enrollment, signed calls) · 10DLC A2P SMS (TCR brand & campaign registration, carrier vetting, CSP setup) · FCC telecom compliance · SIP fraud prevention · call authentication best practices.

Client's Satisfaction, Quick & efficient Solution Delivery guaranteed. Profile: Experience of over 10 plus years in the field of Server/Network Administration with ISP, Corporate IT management. Serving as freelancer here around 10+ years. - Platforms : Linux, WINNT, VM Administration - Cloud : Amazon EC2-VPC, Loadbalancing, RDS, Route 53, S3, SNS, VPN,Firewall,Server administration / Rackspace / Azure / Digital Coean / Linode cloud administration. - DBMS technologies : MySql,Postgresql - iis/apache/tomcat/Nginx, Subversion,LAMP, LEMP - WHM / Cpanel build and administration in all sort of server platforms. - Website maintenance, migration, loadbalancing, DNS, SSL, Web Security - Email Server implementation, whitelisting, maintenance. - Jira, Confluence,Redmine administration, implementation & customization. - Mikrotik Router OS administration with ISP / WISP and total network implementation. - Web Development with PHP,AJAX,Jquery,HTML,CSS -Frameworks skill: Laravel, Flutter - 24 X 7 availability for support & critical issues.

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