Hire the Best Cisco Certified Internetwork Expert (CCIE)
in Bangladesh

I have over 12+ Years of working experience in the Networking Field. I am an enthusiastic NETWORK ENGINEER with the necessary drive and determination needed to resolve complex networking issues. Possessing effective organizational skills and excellent working knowledge of networking technologies and having a commitment to keep up to date with the latest developments. I’m an adaptable and efficient team player with excellent communication skills at all levels. Experienced in providing motivation, guidance, and an up-to-date networking consultancy service to clients. Now looking for a new and challenging network engineering task that will make the best use of my existing skills and experience and also further my career as a freelancer. Technical Skill Set Summary:::::::: • Cisco routers / switches / WLC • Cisco ASA / FTD / ISE / FMC • Cisco NX-OS • Network Automation using Python3 • Checkpoint Firewall & Endpoint Security • Sophos XG Firewall & Intercept X with advance EDR • Gateway Redundancy Protocols: HSRP / VRRP / GLBP • Routing: RIPng / OSPF / EIGRP / BGP / PBR / PfR / VRF • VLANs / STP / RSTP / Ether channel (LAG) • VPNs – GRE / IPSec / DMVPN • LAN-WAN / NAT / ACL • IPv4 / IPv6 • F5 Load Balancer • SIEM-Splunk, Qradar, Wazhu, Suricata, Elastic • Juniper Junos • Palo Alto Next-Generation Firewall • Fortinet Solutions- FortiGate Firewall, FortiMail email gateway, and FortiAnalyzer. • Juniper firewalls SRX Series • TCP/IP, DNS, DHCP • Wireshark • MikroTik • Virtualization: VMware vSphere 6.x • Windows Server 2012 R2 Qualifications: • Cisco Certified Specialist - Security Core (CCNP SCOR-350-701) • Cisco Certified Network Associate (CCNA-R&S) • Palo Alto Networks Certified Network Security Engineer (PCNSE) • APPLICATION DELIVERY FUNDAMENTALS (F5-101) • Fortinet Network Security Expert (NSE 1, NSE 2, NSE 3 & NSE 4) • JNCIA-SEC (JNCIA-SEC) • Junos (JNCIA-Junos)

I am a Dynamic, Dedicated, Passionate and Quickly Adaptable Freelancer with Technological innovations. I am a 🏅Upwork-Skill-Certified Freelancer with ✅100% JSS ✅ 70%+ Long-Term Clients ✅ 80%+ Clients Recommendation ✅ 90+ Active and Completed Jobs with Positive Feedback🏅Architect Certified on Sophos, Fortinet Firewalls and Endpoints Managements ✅ Others Certification on Network and Security✅ Strong and long Experiences on Fortinet, Sophos, SonicWall, Palo-Alto, PFSense Infrastructures Deployments, Migration and Managements✅ Any kinds of Wireless and Voice Solution Deployments✅ Network, System Security & Compliance Managements✅ Strong Experience on Routing & Switching🏦 Long-Experience with MSP, Corporate and Solution/Service-Provider Sectors. 🏦 Already worked with 90+ clients from different regions such as Asia, Africa, US, Europe etc. 🎖️Certifications (Completed & Enrolled) • Upwork Skill Certification - Customer Service. • Certified Architect by Sophos and Fortinet. 🏅 Sophos Certifications: • Sophos-Firewall v19.5-Engineer. • Sophos Firewall v19.5-Architect. • Sophos Firewall v19.5 to v20.0 Certified Architect Delta (AU80). • Sophos Firewall v19.5 to v20.0 Certified Engineer Delta (EU80). • Sophos Firewall v20.0 to v21.0 Certified Architect Delta (AU80). • Sophos Central Endpoint and Server v4.0-Engineer. • Central Endpoint and Server v4.0-Architect. • Sophos Central Endpoint v4.0 to v5.0 Architect Delta (AU15). • Sophos Central Engineer Delta v4.0 to v5.0 (EU15). 🏅 Fortinet Certifications: • NSE-7 (Network Security Architect) –NSE-ID:- 0Qjbf0qGSd • NSE-4 (Network Security Professional) – NSE-ID:- GThFxY1viO • NSE-5 (Network Security Analyst) on FortiAnalyzer- NSE-ID: - 8gIRCniwPN. • NSE-1 (Network Security Associate) By Fortinet License Number: OYBF7cetpL. • NSE-2 (Network Security Associate) By Fortinet License Number: FTsFjlmHck. 🏅 Other Certification: • CNSS (Certified Network Security Specialist) By ICSI, UK License Number: 18427811 • Cisco Certified Network Associate (Routing & Switching) Cisco-ID: - CSCO13303817 Here, I would like to share my Working experiences, fields of expertise and much more- ✅ I have 9 years plus hands-on experiences on Network, System, Security administration, Deployment and Migrations on different Infrastructures along with direct involvements/cooperation on different known issues from Deployment stage to end-user’s support. ✅ Fields of Specialization: 1. Because of having 9 years plus exclusive experiences on different Fortinet, Sophos, SonicWall, PFSense, Palo-Alto and other Infrastructures Deployments and Administration I can work with the Complete Design, Deployments, Migrations and Integrations on these Different types of Infrastructures such as- • Fortigate, Forti-APs, Forti-Switches, FortiVoice-Enterprise, Forti-Manager, Forti-EMS,FortiAnalyzer, FortiAuthenticator, FortiNAC, Fortinet Security Fabric Devices, FortiSandbox, FortiToken/Mobile/Service. • Sophos Infrastructures Managements such Firewalls, Endpoints, Switches, APs etc. • SonicWALL Infrastructures Managements such as Firewalls, NSM, Capture-Clients Endpoints etc. • Palo-Alto, Barracuda, PfSense, Cisco-Firepower, Firepower-Thread Defence and FMC and Others Firewalls Managements. • Migration To/From any of these above Infrastructures. 3. Long experiences on the Network and System Administration on these Infrastructures- • Routing & Switching on Cisco, Mikrotik, Juniper, HP, Dell, Aruba etc. • Wireless Implementation on Cisco, Aruba, Ruckus, 4Ipnet, Unifi/Ubiquiti, Forti-AP, Cambium, Altai, TP-Link-Omada, Teltonika etc. • Mail-Server Administration on Office365, G-Suite by Google, Zimbra etc. • Windows Server Managements. • Virtualization & Datacentre Managements on VMware, ESXi, vSphere or VCenter, Hyper-V, Synology-NAS/SAN and Others. • Voice Solution implementation on renowned Voice Solution Providers such as FortiVoice Enterprise, Grandstream, 3cX, Synway, Yeastar-PBX, FreePBX etc. • Endpoint Solution Deployments on TrendMicro, Sophos Endpoint Protection, FortiClient by Forti-EMS (Endpoint Management Server), ESET etc. • Complete Video Conferencing Solution on Dahua, Polycom etc. • Surveillance, Attendance reader solution on Hikvision, Dahua, ZKTecho, Handuri etc. 4. I am a quick and dynamic learner. I can adjust myself with the Technological innovation within a very short amount of time. 5. I am a technical person with a Never Give-Up character. I have multiples valuable feedback with great reviews on Upwork. You can also have a look at that. If you have any further query on me just send "Hi" in Upwork.

Hi! I’m here to help you resolve your networking challenges with extensive experience across multiple platforms, including Mikrotik, Cisco, Juniper, and Ubiquiti devices. With over 12 years of professional experience, I’ve managed complex networking environments, optimized infrastructure, and implemented both small- and large-scale network solutions. My Core Skills Include: Routing and Switching: I have deep expertise in the design, configuration, and troubleshooting of a wide range of routing and switching protocols. Whether you’re looking to improve traffic routing or ensure network redundancy, I can implement: • BGP (Border Gateway Protocol) • OSPF (Open Shortest Path First) • RIP (Routing Information Protocol) • PBR (Policy-Based Routing) • Static Routing and VLAN • Failover Solutions Wireless Solutions: I have vast experience in designing and deploying wireless solutions that provide robust, scalable coverage for different environments: • WiFi Hotspot Implementation • WiFi Roaming • Standalone AP and CAPsMAN Monitoring & Network Management: Real-time monitoring, logging, and alerting can prevent downtime and keep your network performing at its best. I work with: • The Dude • SNMP, Netflow • PRTG and SolarWinds • SevOne PM • NetBox VoIP and Server Management: I specialize in deploying and maintaining communication systems (VoIP) and backend infrastructure: • Asterisk and FreeSwitch • Server Management • Dolibarr and OpenERP Virtualization and Cloud: Need to set up virtual machines or integrate cloud services? I have hands-on experience in: • VirtualBox • VMware-ESXI • ProxMox Network Security: I offer full security solutions from basic firewall setups to comprehensive multi-layered security frameworks: • VPNs (IPsec, PPTP, L2TP, OpenVPN, WireGuard) • ACLs (Access Control Lists) • Firewalls (Mikrotik, Cisco ASA, Juniper SRX) • Security Audits Devices and Platforms I Work With: • Mikrotik Routers: Devices such as CCRxxx, RBxxxx, AHxxx, cAP ac, and others. • Mikrotik Switches: Various CRS series, including CRS328-24P-4S+RM, for both core and edge deployments. • Cisco Routers: Including ISR 800, 4500, 1700, 2800, 2900, 3900 series, and ASR 1001-X. • Cisco Firewalls: ASA 5500, 5500-X, and Firepower 2100 for network security. • Cisco Switches: Extensive work with C2950, C2960-X, C3560, C3850, C4500, C6500, and more. • Juniper Routers and Switches: Including MX480, MX960, MX104 routers, and EX2200, EX4200, EX4300 switches. • Ubiquiti: EdgeRouter, UniFi series for efficient, scalable network deployment. • Dell and IBM Servers: Deployment, management, and configuration. Network Design and Optimization: I am proficient in assessing existing network setups and recommending improvements to streamline performance, increase security, and reduce latency. Whether you’re setting up a new data center or scaling up your current infrastructure, I can guide you through choosing the right devices and configurations for optimal results. Additionally, I provide consultation on network best practices, compliance with industry standards, and cost-effective hardware recommendations. NMS, NPM and DCIM Solutions: I can also deploy fully customized solutions for Network Monitoring System(NMS), Network Performance Monitoring (NPM) and Data Center Infrastructure Management (DCIM). I’ve worked extensively with The Dude, SevOne, NetBox and offer solutions that can be integrated into your existing infrastructure under the management platforms. Project Experience: With over 12 years in the field, I’ve successfully deployed over 1,000 Mikrotik devices and managed a variety of network projects involving multi-vendor environments. From small office networks to large-scale Network setups, I’ve managed both deployment and long-term support. I am skilled in troubleshooting, optimizing existing systems, and ensuring the reliability and scalability of networks. How I Can Help You: Whether you need help with routing and switching, setting up firewalls, designing a wireless network, deploying VoIP, or managing servers and virtual environments, I’ve got you covered. I can help you plan and deploy the best network solutions tailored to your unique needs. Plus, I’ll ensure ongoing support, so your network always performs at its best. I look forward to working with you and making sure your network infrastructure is both powerful and reliable! Let’s connect and discuss how I can help you achieve your goals.

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