Profileimage by Jayanthan Theivendramoorthy Network Consultant / Architect from London

Jayanthan Theivendramoorthy

partly available

Last update: 27.06.2020

Network Consultant / Architect

Company: Inet Resources Ltd
Graduation: BSc Eng, CCIE, JNCIP and AWS CA SAA
Hourly-/Daily rates: show
Languages: English (Native or Bilingual)


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Network professional with strong 14+ years of experience as financial and service provider Network Architect, Design and Technical Design Authority (TDA) consultant. In depth understanding of financial on-boarding and distribution models including Low Latency and MPLS based intranet/extranet WAN networks.

Professionally experienced and qualified with evolving technologies such as AWS/Azure cloud network solutions/migrations, Cisco Network Service Orchestration (NSO), YANG Models, Network Service Modelling for NSO/NETACE, Juniper NITA Framework and Network Automation (NETCONF, Python and Ansible), SDWAN (VMware VeloCloud) solutions and NG Data Centre networks with VXLAN/MPLS-SR/EVPN.

Cisco and Juniper Certified - CCIE SP (#47563), CCIP, CCNP, CCNA and JNCIP, JNCIS, JNCIA-junos

AWS Certified Solutions Architect - Associate (SAA-C01)

MPLS core and distribution, WAN and enterprise network solutions, financial exchange / data centre and product service hub on-boardings and interconnections (unicast and multicast), financial market data distribution to clients, AWS cloud solutions, infrastructure designs and service migrations, Cisco NSO, YANG models and service package creation with python for mapping logic, High Level Designs (HLD), development testing, Test scope/result documents, Low Level Designs (LLD), configuration templates, Network Change Requests(NCR), 3rd/4th level support

Project history

05/2014 - Present
Network Consultant
Refinitiv (>10.000 employees)
Banks and financial services

07/2013 - 04/2014
Transport Network Design and Planning Consultant
Everything Everywhere - EE (TMobile & Orange UK)
* Design and deliver the migration program of the mobile transport IP (MPLS) core services of Ex
TMobile and Orange into to the new converged MPLS core network. Mobile control (signaling) and
data plane integration along with the other services including internal IT infrastructure.
* Juniper and Cisco based MPLS core network and Checkpoint firewalls controlling the access
requirements on LAN aggregation points.
* 2G, 3G and 4G mobile transport service designs and integrations. Design the transport network for
the signaling, voice, Gn, Gi, IuPs/IuCS, LTE Security Gateway, EPC integrations and SGSN/GGSN
service flows.

05/2013 - 07/2013
Network and Security Consultant
Play (
* Design and implementation of new Play data centers (Cisco Nexus5596s, ASA5580s, ASA5525s,
Cisco FWSMs, Cisco 6513/6509s, ASR 1004s, 3700 series switch stacks and 3800 series ISR
* Design and implement the routing, switching and firewall designs with technologies such as
vPC, GRE/IPSEC, OSPF, traffic engineering and firewall integration into the datacentre and
core environments
* Cisco Aironet wireless LAN design and implementation for the data centre environment -
* Network monitoring deployments - Cacti, Whats Up Gold, Splunk, Netflow monitors, Firemon

02/2009 - 03/2013
Network Design Engineer
BT Radianz - GB & FM - Global Banking & Financial Markets
Major Projects:
Network design and implementation of BT brands/products as a Technical Design Architect (TDA) /
Design Engineer:
* Low latency Tier1 BT infrastructure (called RVI - Radianz Venue Interconnect): Designed the
Juniper QFX3500 based low latency network infrastructure. Juniper cut through switching, VLAN
translation, Q-in-Q and trunking and access L2 features.
* One Voice / One Collaborate Video on Radianz (OV-OCV on Radianz): Dedicated 6-CoS enabled MPLS
connection to BT Voice GVPN / GVE (global video exchange). Juniper MX960 routers as the MPLS PE
routers for the L3 any-to-any intranet VPN. Designed the PE-CE CoS and MPLS VPN configurations.
* FullTick on MPLS: Thomson Reuters real-time market tick data distribution over BT MPLS
Juniper MX960 PE router based MPLS L3 Hub-and-spoke design to interconnect the Thomson Reuters
MTC to BT MPLS, which distributes the real-time market data to selected high profile clients
* Certification of Juniper MX960 as a BT MPLS PE router (Unicast and Multicast designs)
* Platinum OC12 - Thomson Reuters dedicated low latency high availability data centre connections.
Data centre Nexus 5000 & Cisco 6500 series switches and Juniper SRX firewall design,
configurations and support.
* Multicast & Unicast provider/member extranet connections over BT MPLS
* Low Latency Tier-2 L2/L3 Network (called ULTRA): Cisco 6500 series L2 switch based low latency BT
infrastructure design

11/2005 - 11/2008
Senior Network Engineer
Major Projects:

* Expansion of legacy IP Backbone according to the growing network requirements
* Implementation of Layer 2 PE-CE access aggregation network, tested and implemented VTP, MSTP,
PVST+, Port Security, QoS, Broadcast control
* Design &Implementation of Converged IP Core Network
* Planned, evaluated and implemented Converged IP Core Network.
* Carried out the performance acceptance tests of services such as L3VPN/L2VPN, VPLS, HVPLS, QoS,
MPLS TE, Q-in-Q, OSPF sham link etc...
* Integration of MGWs, Call Servers, STP, GGSN and SGSN with the Core Network -Ericsson & Huawei
* Familiarized L2VPN Technologies: EoMPLS, AToM - any combinations, VPLS
* Enterprise customer migration from old MPLS backbone to Converged IP Core Network
* Tested and selected inter-AS types for this migration
* Implemented the migration plan and migrated PE-CE links to Converged IP Core successfully
* Implementation of ISP backbone
* Designed and implemented the ISP Backbone; Gateway routers, Transit router, IX router, Core
routers, 2 RRs and aggregation routers
* Implementation of Customer PE-CE Bandwidth Monitor and Link Monitor Tool - Leader of the team of
implementing the system using CACTI for the bandwidth monitoring, NAGIOS for link monitoring and
Reversed Proxy for URL access via internet

02/2005 - 07/2005
Trainee Engineer - Data Network
* Planning and implementation of Networks for ISP and Network Solutions Division.
* GSM Base station installation (Ericsson) - Mobitel GSM Project, Fiber Transmission Network
implementation - Fiber ring of SLT.

08/2004 - 01/2005
System Administrator
UOM Sri Lanka
Computer Lab - Electronic and Telecomm Dept

Maintaining the servers and computers, Taking preventative measures for virus related problems,
Attending to computer related problems reported by students.

Time and spatial flexibility

Primarily based in London but willing to travel for face to face meetings and other colobrations.

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