• Lead Technical (IP) Team with defined job responsibility to ensure smooth Operation of ISP/IGW/ICX/Clouddomain.• Responsible for planning and design of ISP/IGW/ICX/Cloud domain infrastructure • Expansion, POC of new technology to meet the service scalability • IP/MPLS Detail Design for IP Transport Network of ISP/Cloud• Preparing the LLD, HLD for Technical solution for service delivery • Resource planning and optimization. • Develop operational process, documentation and report analysis • Perform cross departmental activities• Customer meeting for technical solution and service delivery • Train and provide back-end support for 24x7 operations

• Performed Network Design, Operation and implementation of ROBI AXIATA Seamless MPLS & IP-MPBN Network. • Performed ROBI AXIATA Internet Border Gateway (IBG) Router Swap with Huawei X8A at Chittagong & Pubail Core Site.• Performed Access layer swap of SUMMIT NTTN and provisioned different services (MPLSL3VPN/L2VPN/QnQ)• Worked with ROBI AXIATA Centralized Firewall with HUB-SPOKE Solution with Geographical redundancy.• ROBI-F@H Interconnection with MPLS Inter-AS Option A For 3G, 4G Traffic Routing.• ROBI-SUMMIT Interconnection with MPLS Inter-AS Option A For 3G, 4G Traffic Routing.• Any Critical Incident analysis the root cause of problem co-ordinate with Huawei HQ & R&D Team.• MOP preparation for Several GE Integration & BOX/Site Migration.• OCS Firewall Migration.• IP-RAN Network QOS deployment for Voice and Signaling.• BSC/RNC Integration with IP-MPLS/MPBN Backbone.

• Lead and managing the IP Core Network. Planning, Design & implement of CISCO CHASSIS(ASR1001-X,R3945,R3925,R3845,R3660,C4500X,C3750X,C3650,C2960X),ZTE CHASSIS(M6000,8902)and 5525X,5515 ASA Firewall Appliance.• Logical Design & Configuring of OSPF,BGP,BGP PATH Attributes & Route Selection (AS-PATH,LOCAL PREFERENCE,COMMUNITY),Routing Manipulation(PREFIX-LIST, FILTER-LIST, ROUTE-MAPS) to bear the IP Traffic from IP Transit Provider Level3 Communications & SingTel Telecommunications. Also Configuring VLAN, RSTP, L2/L3 Ether channel, FHRP (HSRP, VRRP), GRE over IPsec VPN, Remote Access split tunnelling VPN, Port Forwarding & Static Routes. • Operations, Maintenances, Configuring, Troubleshooting of IP-Core Network, NMS Monitoring Equipment’s as well as Quality of Service (QOS) Parameter Latency, Jitter for IP call to ensure optimal performance.• Lead the team and Manage day to day whole network Operation. • Very closely work with International IP Service Provider to ensure IP Reachability.• Generating reports for better understanding of the performance of the equipment under domain as well as Execute regular health check and KPI analysis of Core, Distribution and Access Network.• Prepare, update and maintain all planning and provisioning documentation.

• Provide 2nd Level Logical support on CISCO(R7609,ASR901,ASR903, C2960,C2960X,ME3400,ME3800)/JUNIPER(MX10,MX80,ACX1100)/HUAWEI(NE40 ,S3300,S5300, S9300)Routers, Switches Comprised IP/MPLS SP Networks problems reported by customer.• Layer2/ Layer 3/OSPF/BGP/MPLS(L2/L3 VPN)/VLAN/STP/RSTP/MSTP & 3G Backbone Networks (GP, ROBI, Teletalk, Banglalink) O&M,Troubleshooting, Fault correlation, incident analysis, reporting and maintain KPI as per SLA.• Generating day to day reports for better understanding of the Availability of Core, Distribution and Access Network.• Generating reports for Alarm/Fault analysis of the equipment’s, rectification report, change management, configuration management, and fault management in IP Access domain.• Managing SOP (Standard Operating Procedure) and other Documents.

• Design & implement of CISCO Datacom(ASR1002,C4500X) & GENBAND NGN Product (Soft Switch, Media Gateway & SBC).• Design & implement the features of RSTP Protocol. Design BGP PATH Attributes (AS-PATH, ORIGIN, NEXT HOP, LOCAL PREFERENCE) and Routing Policies (PREFIX-LIST, FILTER-LIST, ROUTE-MAPS) to bear the IP traffic over the internet. Configured CISCO ASR1002 Router of Internet Gateway with BGP & OSPF routing protocol and also maintenance & configuration C4500X Layer3 Core Switch using VLAN, VRRP,LACP, OSPF and Static Routes.• Operations, Maintenances, Configuring, Troubleshooting of Core Network, Soft Switch, Media Gateway, Optical MUX, NMS Monitoring Equipments as well as Quality of Service (QOS) Parameter ASR, ACD, R-FACTOR, PDD, Latency, Jitter, NER for IP call to ensure optimal performance.• ISUP trunk configuration (VC-12/STM-1/STM-4/STM-16) for inter connectivity with ICX operator and also cross connection E1 mapping (VC-3, VC-4, and VC-12) add, drop planning according to E1 Matrix and maintenance on Tejaj1600 SDH MUX.• Very closely work with International Carrier and ICX Operator.

• Layer2, Layer3 Switch, Router Commissioning/Deployment/Troubleshooting of ZTE High End Router(M6000)& ZXR10 product series (8908, 8902, 3928 ) in the IP-network of Banglalion & OLLO WiMAX.• Operations, Maintenances & Troubleshooting of IP-NMS & BSS-OMC server to ensure optimal performance.• Configuring & Troubleshooting of IP Routing protocols Static,OSPF (STUB, Totally STUB, NSSA, totally NSSA), BGP, VRRP,LACP, Switching (Vlan, STP, RSTP, ZESR).• Alarm Monitoring , Reporting ,Troubleshooting & Documentation as per SOP(Standard Operating Procedure). • Maintain all Hardware and software troubleshooting part of Banglalion and OLLO Wireless Internet.• Customer Support (Physical, over Instant Messenger and Telephone) as well as technical interface.