Geoffrey Tsuma Zakayo

811 Maynard Ave S Seattle WA 98134

+4257534379 (Mobile) +4046543293 (Alternate) Email: gtsuma@gmail.com

TECHNICAL EXPERIENCE SUMMARY

I have over 15 years’ experience in network architectural design, implementation, deployment and consulting in telecommunication and data network engineering. I hold a master’s degree in Information Systems and a bachelor’s degree in Electrical and Telecommunication’s engineering. I have solid and extensive hands on experience with the following platforms: Cisco IOS, IOS–XE, IOS–XR & NX-OS, Juniper, Redback, IBM, Lucent, Motorola, F5, A10, NetScaler, Check Point, Ericsson, NetApp, Hitachi and Nortel that encompass complex routing, switching, security, storage and load balancing technologies. Cloud enablement to private, public or hybrid cloud environments. Providing architectural recommendations for SDN and NFV including the orchestration methodologies for multi-service provider networks.

 

CAREER CERTIFICATIONS

·  Cisco Certified Networking Associate-CCNA

·  Cisco Certified Networking Professional-CCNP

·  Cisco Certified Internetworking Expert CCIE RS & Data Center (Written)

·  Juniper Networks Certified Internet Associate - JNCIA

·  Juniper Networks Certified Internet Specialist - JNCIS

·  Six Sigma Black Belt

·  ITILv3

 

NETWORK PROTOCOLS

TCP, IPv4 & IPv6, SPX/IPX, AppleTalk, SNA, RIP, BGP, IGRP, OSPF, IPSEC, IS-IS, EIGRP, SIP, MPLS, PIM –DM/SM, MSDP, RADIUS, TACACS, WAP, 802.11 etc.

 

SDN APIs

XML, JSON, SOAP & REST

 

SCRIPTING LANGUAGES

Python, PowerShell & Unix shell scripting
 

PROFESSIONAL EXPERIENCE

 

GTZ                                                                                                         December 2015 – Present

Cloud and Data Center Architect

 

Design of customized private, public or hybrid cloud platforms. Providing guidance in cloud computing strategies including adaptation plans, design, cloud management and monitoring. Strategic development, designing and prototyping of next generation software defined network (SDN) and software defined data center (SDDC) architectures.

 

 

 

CompuCom                                                                        January 2015 to December 2015

Solutions Architect

 

Bellevue, WA                                                                                   

Responsibilities 
I was part of the Cisco Team at Expedia for the Data Center Refresh project. The project involved the decommissioning of older Cisco equipment and replacing them with the Nexus switches. These included the Nexus 2048s, 5596s, 56128s, 7009s, 7706s, 9300s & 9500s network based platforms. This facilitated the extension of the FabricPath from the edge leaf switches to the spine switches and the border leaf switches throughout the data centers and the integration with the APIC for the ACI fabric. I developed ISSU code upgrade procedures for the Nexus switches and executed them to ensure the switches complied with the recommended gold standard software versions. I was also involved in the redesign of the routing architecture while replacing the 6500’s edge routers with ASR 9K routers in the data centers, bug scrubs, code upgrades as well the mapping of their AS-build network architecture.

 

Microsoft                                                                                              01/2014 – 12/2014

Senior IT Service Engineer

I was responsible for the development of the troubleshooting guide for the Azure Express Route security enhancement with zone based firewalls documentation that utilized the Juniper SRX3600 clusters. Azure Cloud support. Network optimization and standardization. Provided tier III support to the network operations center while on call rotation. Supported the global Microsoft (MIST) LAN, WAN, and the wireless infrastructure. Supported the datacenters migration efforts to the new MSDC (Massively Scalable Data Center) architectural framework. Network protocols commonly used were ISIS, BGP, MPLS and OSPF. Worked extensively on Cisco platforms that included ASR’s 1k and 9k’s. Nexus 2k, 3k, 5k, 6k and 7k. Cisco 4500’s, 6500’s, 7000 series. Juniper SRX, Cisco ASA and Fortigate firewalls. F5, NetScaler and A10 load balancers.

 

Infospace                                                                                                      06/2013 – 12/2013

Senior Network Consulting Engineer  

My responsibilities included:

Designing, implementation and support of Infospace Internet and Enterprise networks worldwide mostly running OSPF as their IGP and BGP for the MPLS and Internet peering. Migrated the customer services at their New Jersey data center to AWS. This involved network, security and infrastructure configuration setup for Amazon’s EC2, S3, Route53 and CloudFront services. I provided network support for all production services - network troubleshooting, root cause analysis, design and implementation of long-term solutions. Performance and capacity planning: auditing, monitoring, analyzing and reconfiguration of network environments for performance improvements and future scalability. Documentation of network engineering processes and procedures for network release planning, testing and support for redundancy disaster recovery and high availability. I worked closely with storage and systems engineering, software developers/testers providing network support and consulting expertise. Created, maintained, and improved network security policies and procedures. I participated in the New Jersey data center migration to the AWS cloud, and relocation from Internap to Telx in Tukwila, Washington. Network protocols commonly used were BGP, EIGRP, MPLS and OSPF. Worked extensively on Cisco platforms that included Cisco 4500’s, 6500’s, 7000 series. Juniper SRX, Cisco ASA and Checkpoint firewalls.

 

 

Wipro Technologies                                                                                08/2012 – 05/2013

Consultant assigned to the Catholic Health Initiatives (Tacoma, WA)

My responsibilities included:

Coordinating and collaborating with the server, data center, backup/storage engineering teams and clinical/business application administration groups to ensure availability, reliability, and scalability of network infrastructure to meet business demands. Checking the service desk systems for entries on network infrastructure issues; prioritizing and responding to the service desk tickets as appropriate. Serving as a strategic contact for the escalation of network issues; providing timely response to customer inquiries. Planning and implementation of network infrastructure upgrades, including identification of end-of-life/support equipment, maintenance activities including code versions and configuration management. Monitoring and testing the systems for performance and providing performance statistics and reports. Recommending and executing modifications to network infrastructure environment in order to improve efficiency, reliability and performance. Developing and maintaining training materials and network documentation. I act as the lead, mentor and provide guidance to other members of the team.

I also provide high-level engineering solutions as well as project management duties.

Wipro    Technologies                                                                              03/2012 – 08/2012

Consultant assigned to Microsoft Corporation (Redmond, WA)

I was a member of the Engineering Services IT group. My responsibilities included.  Network design, architecture, implementation and trouble shooting of complex VLAN, STP, VTP, Trunking, ISL, 802.1q, switching infrastructure within the MLS environment. I was also responsible for escalation to field support and higher levels. I acted as the escalation point for various devices that support Network Management, Performance Management, Traffic Shaping, Bandwidth Management, and IP Address Management. I identified and recommended the right products and services to suit the customer’s business needs. I was responsible for allocating and configuration of IPv4 and IPv6 addresses for the customers. I was involved in the design and implementation of HSRP, VRRP, GLBP and Load balancers. I consulted with the customers on the design, review and implementation of their standard and customized solutions in the data centers. Some of the daily tasks included configuring and troubleshooting of networking protocols that included BGP, OSPF, IPSEC, HSRP, Multicasting (MSDP, PIM –DM/SM), CLNS, NAT and QoS on the Cisco IOS, Cisco IOS-XR, Cisco Nexus NX-OS and Juniper JUNOS.

I was involved in the following projects.
 

·  The design and implementation of the storage and monitoring network for MLS

·  Windows Live Labs IPv6 Enablement



 

ThruPoint, Inc.                                                                                           05/2010 – 03/2012

Consultant, assigned to Sprint (Kansas City, KS)

I was a member of the design team for the Data Network Development group. I was responsible for the network design of products for internal customers as part of a team. The design included both the physical and logical configuration of the various network components in the multi-vendor data center environment.  The responsibilities included (but were not limited to) heavy IP design,  technical documentation using Visio, configuration of switching, routing load-balancing and route selection systems as well as establishing network fail-over capabilities between the components.  The network components consisted of equipment from vendors such as Cisco Systems (6500, 7600, 12K, ASR9K, Nexus 2K, 5K, 6K, 7K & 9K), Juniper Networks (SRX 3600, MX 960), Samsung, Ericsson, Alcatel Lucent, Spirent, IXIA, Empirix amongst others. Some of the implementations that I undertook at the Overland Park Laboratories included

•     The design and implementation of the new Dedicated Data Center (DDC2)

•     The design and implementation of the new Mobile Switching Center (MSC5)

 

AT&T Southeast                                                                              11/2000 – 3/2010

Network Engineer

·  Responsible for the network architecture, configuration, deployment and support of the AT&T’s Southeastern region network as well as for enterprise customer sites. This included Planning, Configuration, deployment, migration, troubleshooting and upgrade of complex Cisco IOS, IOS - XR & NX - OS, Redback, IBM, Lucent, Motorola, Ericsson and Nortel based platforms that encompass LAN/WAN routing and switching.

·  I consulted with product management and sales teams to ensure that the proposed network solutions matched the specific business needs of AT&T’s enterprise customers.  The solutions included both managed and unmanaged services.

·  Configuring and troubleshooting of networking protocols that included RIP1/2, BGP, IGRP, OSPFv2, OSPFv3, IPSEC, IS-IS, EIGRP, HSRP, Multicasting (MSDP, PIM –DM/SM, PIM - BSR), CLNS, NAT and QoS on the Cisco IOS and Juniper JUNOS.

·  Configured and deployed network elements within the MPLS network with MPLS Traffic Engineering, Link Protection, Node Protection, Path Protection, Auto Tunnels Mesh Solutions, Auto Tunnel Backup Tunnels, One Hop TE tunnels, DiffServ Aware Traffic Engineering RDM MAM models, LDP FRR, IP FRR etc.

·  Configured and deployed network elements within the GSM-standard based UMTS/HSPA  circuit switched voice and packet switched network. 

·  Provisioning, troubleshooting and turn up of Internet connections for enterprise customers using, implementation strategies such as frame-relay, ATM, OC-x,  Gigabit Ethernet, NxT1, Private lines, DSL and Metro Ethernet.

·  Implementation of VPN solutions using Nortel’s Conetivity extranet Switch, Cisco Concentrators, Juniper SSL, Cisco FWSM’s, Cisco ASA, Netscreen and Sonicwall firewalls.

·  Data center design and deployment this included equipment such as routers, switches, F5 load balancers (LTM, GTM, LC, and ASM), and DNS servers and firewalls.

 

BellSouth Telecommunications Atlanta, GA                                 6/1999 - 11/2000

AIN Technical Support -

·  Provisioning, troubleshooting and maintenance of the AIN (Advanced Intelligent Network) nodes, which included the SSP’s, STP’s and SCP’s over the CCS/SS7 platform

·  Verification of switch translations for 5ESS, DMS, EWSD, 1AE switches. Trouble shooting DSX-1, DSX-3 bays, multiplexer's, FOT.

·  Network analysis using Protocol Analyzers, HP Openview, NavisCore and CellBlaster.

·  Configuration, maintenance and trouble shooting of ATM, ISDN, Frame-Relay, PPP, PPP multilink and X.25 on Cisco routers and switches

 

PBK EAK                                                                                                  2/1994 - 7/1998

Electrical Engineer

·  Coordinated the routine preventive and shut down maintenance activities.

·  Provided technical support and training to a team of technicians

·  Designed, tested, and validated engineering plans for clients.

·  Was a member in charge of re-engineering the various manufacturing systems and processes for compliance with the ISO-9000 standard

 

EDUCATION

Keller Graduate School US-GA-Atlanta 12/2002

Master's Degree in Information’s Systems

 

MOI UNIVERSITY - EAK 11/1993

Bachelor's Degree in Electrical & Telecommunications Engineering

AFFILIATIONS

Professional member of the Institute of Electrical and Electronic Engineers (IEEE)