Systems Architect(Bell Canada)

Najiur Rahman, M.Eng., P.Eng.

(Bsc in EEE M.Eng in Computer Networks AWS CCNA CCNP JNCIP VCP P.Eng.)

Scarborough, Ontario, Canada

Cell: +1-647-***-**** E-mail: ******.******.*@*****.***

PROFILE:

9 years of experience in the enterprise Data, Telecom and Cloud network.

Experience with Network Configuration, Troubleshooting, Automation, Monitor and Life Cycle.

Masters in engineering in Computer Networks from Ryerson University.

Exceptional communications and organizational proficiency with team building skills.

Experience in planning, building and operating the robust and most reliable IP network in Canada.

TECHNICAL SKILLS:

Experienced in the Automation and Orchestration with different tools and platforms like Cisco tail-f NSO, Conf D, Ansible, Kubernetes.

Experienced in different tools and scripting languages where used Splunk, Python, XML, JSON.

Experienced in the virtualization and cloud platform where deployed different services in VMware, Azure, AWS.

Proven experience in design and delivery of cloud native solutions with Micro services, containers and orchestration using AWS, Linux, Scripts, Jenkins, Ansible, GitOps, Docker, Kubernetes, Terraform Jenkins and CloudFormation.

Configured various technologies such as OSPF, ISIS, BGP, L3 VPN, L2 VPN, IP Sec, HSRP, VXLAN, MPLS VPN, VLAN, STP, LAN/WAN, IGMP, IP subnetting, VLSM, ACL, TCP/IP. VOIP, SAN, UCS, vPC, putty, IPv4, IPv6, DNS, DHCP, Dual stack, NAT, NPT, TACACS, SDWAN

Configure and troubleshoot RADIUS and TACACS+ protocols in ClearPass and Cisco ISE to enforce authentication and authorization policies across the network. Integrate ClearPass and Cisco ISE with directory services such as Active Directory and LDAP for user authentication and identity management.

Hands-on experience on packet switching Core network where deployed and configured Cisco GSR1k, Catalyst 65XX, ASR9k, Spitfire 8800, NCS5500, Juniper M320, MX960 PTX1k, PTX5k, PTX9K, Nokia SR 7750,7790.

Worked in the circuit switching Core network where configured Huawei MUXs (OSN 3500, OSN 1500), Meta, Audio Codes and SONET cards in Cisco routers, TDM to IP MUX.

Monitoring Tools: Splunk, Cacti, Nagios, Homer, SolarWinds, SNMPv2/3, MRTG.

Telecommunication: Working experience with SS7, TDM, SIP, H323 protocols.

Transmission: Working experience with SONET, SDH, PDH, DWDM, CPL, multi mode, single mode.

Conference: Ad hoc conference, Rendezvous conference, CUCM. Jabber.

WORK EXPERIENCE

1.Systems Architect

IP Core Engineering, Bell Canada

May 2018-Present

Major Responsibilities:

Plan system design and implementation projects and guide all project participants and stakeholders throughout technology development initiatives.

Design and implement MCDN networks like Google Cache, Akamai, Facebook, Limelight.

Design the mobility towers’ core router, configure the latest routing protocol like ISIS, BGP, LDP, MPLS, and Multicast, to accommodate the ongoing demand for 5G networks.

Work in different migration projects like border router migration from IPCORE to Next generation core where core devices are more close access to minimize network latency. Where I have to make sure to make the changes by network automation, orchestration, using Linux, Scripts, Jenkins, Ansible, GitOps, Docker, Kubernetes, Terraform Jenkins

I work to deploy new ASR9K/MX960 router in the next generation CORE. I configure the new device in tail-f and used all the micro services like spededge, wanconnect, peer service and peer interface service through tai-f. I have to make link intent and configuration in Ansible and kubernates.

Decommission of legacy devices like Juniper m320, Cisco 7k, Catalyst 6500, CRS where have to make sure all legacy configurations are also removed to optimized the network.

Implemented micro bfd in core links which made sure notify the link failure with in milliseconds and ensured fasted convergence by the secondary link.

Designing different protocols TV customers for accommodate 4k video traffic.

Working with different stakeholders to make sure 99.99999% up time for our IPVPN customer.

Worked in a project called MEGA Correlation tool which is reducing 1000+ hours of manual workload of risk analysis.

Implemented OID alerts for CPU, card temperature of router which insured faster detection of hardware failure.

Lead the development of new technologies; analyze existing architectures and made recommendations for improved MPLS-VPN technologies.

Collaborate with customers to assess business needs and communicate requirements to internal business groups responsible for supporting MPLS-VPN customers; conduct troubleshooting, testing, and other technical deliverables to ensure that systems operated within customer expectations.

Utilize capacity-planning reports to ensure network capacity augments are promptly completed with no customer impact.

Act as level-4 escalation point for network/customer issues.

2. Network Operation Associate

January 2017-May 2018

Comwave Networks

Major Responsibilities:

Troubleshoot and provide network monitoring on all core and edge network elements.

Analyze voice/data traffic and re-route as needed to ensure benchmarked ASR/ACD and uptime.

Provisioning TNs (DID, LNP, Port out, 911 service etc.)

Provision new DSL and TPIA customer in ACS, Cranium.

Design, implement, and manage network access policies using ClearPass and Cisco ISE for wired, wireless, and VPN environments.

Configure and maintain role-based access control policies to ensure secure network access for authorized devices and users.

Configuring and maintaining DMVN, GRE Tunnel, IPsec, Cisco easy VPN, OSPF, BGP(TORIX), MPLS network according to NCR and MOP.

Setting up new customer in SBC (configuring signaling IP, media IP, media resource pool).

Configuring customer’s endpoint, different ports (on net/off net/ pay per minute/ global in-out, international in-out), iedge group, LCR update etc.

Detecting fraud, acting accordingly (retail fraud, business fraud, wholesale fraud, two stage fraud etc.)

Network monitoring in SolarWinds, TPIA, DSL, Transit link, BGP peering, configuring OSPF, BGP, MPLS etc

Cross connect in the DATA center into different aisles (ethernet, fiber single mode/ multimode, T1, T3, OC3, OC12 etc.)

Ensure that carriers and vendor are meeting service level targets.

Writing query in MySQL for CDRs, billing query, two stage quest etc.

Troubleshoot the root issue of failed call by getting the CDR, tshark the sample, getting the pcap and analyzing the flow among different gateways, different header/body.

Provide first level support for all wholesaler tickets.

Provide second level support for all technical support tickets.

Create and maintain documentation on our internal wiki.

Perform nightly maintenance in accordance with approved MOP from engineering team.

3. Assistant Engineer (Network Operation Centre)

May 2013 – August 2015

Mir Telecom Ltd

http://www.mirtelecom-bd.com/

Major Responsibilities:

Live call trace and analysis Routing Domestic and International voice traffic to and from ANS & IGW.

Tier 1 and Tier 2 support.

Opening ticket for customers’ queries and complaints.

Monitoring various alarms of Core by Softex3000 and Transmission sections by Imanager in NOC.

Routing the inbound and outbound domestic and international traffic from and to different ICX (interconnection exchange) and IGW (international gateway).

Load balancing the live voice traffic into different ICX and IGWs through different international and domestic TGs (trunk gateways).

Performing call trace to identify the call drops reasons and changing the route and fixing the problem to ensure the best call performance.

Analyzing problems in depth Ensuring perfect network performance.

Performing the required troubleshooting communicating with site Engineers and other NOC.

Escalate problems to the appropriate personnel level.

EDUCATION:

Master of Engineering in Computer Networks

Ryerson University, Toronto, Ontario, Canada. Year- 2015 to 2016

Bachelor of Science in Electrical and Electronic Engineering

North South University, Dhaka, Bangladesh. Year 2008-2012

PROFESSIONAL CERTIFICATION:

CCNA-Routing and Switching

CCNP-Security (Cisco Certified Specialist - Security Core certificate and Cisco Certified Specialist Network Security VPN Implementation certificate)

Juniper: JNCIA Routing and Switching

Juniper: JNCIS Service Provider

Juniper: JNCIP Service provider

AWS Certified Solutions Architect

VMware Certified Professional 6 – Data Center Virtualization

PROFESSIONAL MEMBERSHIP:

Professional Engineer of Ontario, Canada

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