SUMMARY

• Strong skilled Telecommunications/Networking professional with 11 years of expertise and experience in Core Network Architecture, consulting & Systems Integration, IP &Transport, IP Multimedia Subsystem (IMS), Network Security.
• GRPS/3G/UMTS/HSDPA technologies, PS core Data architectures, Evolved Packet Core Network (EPC) Implementation, GERAN/UTRAN/LTE Radio Access Networks Integration to Core Network, OCS, and HLR integration to Core Network, strong knowledge of Policy& Charging Rules Function (PCRF)

PROFESSIONAL EXPERIENCE

Confidential - Redmond, WA

Sr. Consultant

Responsibilities:

• A leading contributor to a virtualized EPC (vEPC) deployment project Confidential &T
• Develops test strategy, test plan and test cases for various call flows within vEPC lab that needs to be deployed in operational network
• Validates all signaling messages across various interfaces for each call flow
• Configures vEPC nodes (PCRF, SGW, PGW) to support these various call flows
• Makes recommendations to engineering team regarding new feature installations and upgrades after testing and validating them in a lab
• Hands on with scripting tools Seagull, dsTest and IxLoad, Land Slide
• Hands on with Diameter signaling protocol for EPC and IMS networks
• Prepares configurations and validates them in the lab before being deployed to the a operational network

Confidential

Consulting Engineer

Responsibilities:

• Performance Intelligence Centre (PIC) deployment, configuration and day to day maintenances
• Diameter Signaling Router (DSR) deployment with all modules (Mediation, FBAR, RBAR, PDRA, MAP-DIAMETER IWF) enabled
• Day to Day DSR configuration to support different scenarios for customer demos
• Oracle Policy Server (PCRF) installation with Subscriber Profile Repository 9.3
• Configure PCRF to work with DPI (TDF) including creating policies for customer demos
• Configured Policy to with BNG (CISCO) including configuring Radius CoA in PCRF and Policies for installing CoA into BNG
• Day to Day PCRF configuration to support different scenarios for customer demos in both wireless and wire line environment
• Designing and developed Turbo-button Use Cases for Policy Server Functionality demonstration, involved creating call-flow on Gx & Rx diameter interfaces, Bandwidth on Demand Server Development using Java J2EE, and Seagull Traffic Generators
• Designed and deployed Over The Top (OTT) PCRF use case, involved validating call-flows and documenting, developing application server that communicates to PCRF via Rx Interface sending QoS requests, using Java J2EE and seagull Traffic generator
• Designed and developed Parental Control Use Case for Policy Server (PCRF) Product, involved setting complex Policies on PCRF
• Diameter Signaling Router Functional Tests & Demonstrations involves the use of Seagull & dsTest Traffic generator, demonstrating mediation, RBAR, FBAR, Load Balancing and Automatic Fail-over product features.
• Performs Inter-Operability Tests between Tekelec DSR, PCRF against Oracle Online charging systems, OCMS, OCSG, sy, ro diameter interfaces
• Test Cases or use cases documentations and training to Sales Engineers
• Assist PSE in products integration in live networks by integrating similar products/products emulator in lab and share traces of a workable solution in various Diameter Interfaces

Confidential

IP Networks Lead

Responsibilities:

• Responsible for Mobile Broad band Core Network, ISP, Corporate Data Network & IP MPLS backbone Network
• Successfully implemented Flexi ISN (GGSN) & Combi SGSN hardware upgrade to medium configuration, Service Blade & Interface Blades installation for Flexi ISN, as well as PAPU installation for Combi SGSN;
• PS Core Network upgrade to Evolved Packet Core (EPC) using Nokia Siemens Network, Flexi ISN with Flexi NG & Flexi NS (ATCA platforms); responsible for vendor selection & evaluation, solution design evaluation, project implementation plan review, project implementation & evaluation
• Undersea cable redundancy project, connecting to Vodacom to Global Crossing ISP as a redundant ISP to Seacom while creating good environment for automatic fail-over between two ISP; Led and Organized Vodacom Global Network Team, Local team and Service Provide to make this possible
• Phase I of IPv6 deployment project (vendor evaluation & selection, Team Capacity Building through workshops &IPv6 trainings). Weekly progress reporting & collaboration with global Confidential IPv6 Team
• Integration of Online Charging System (OCS) Unified V3 system into Core Data Network project, which involved connecting OSC to other external systems such as PPFE, @COM, ICAP, ESPLANADE, Platforms CISCO ISR 7609, Flexi-NS (PDN GW)
• Successfully Implemented a change of IP address pool on GGSN from private IP address allocation to Mobile Internet subscribers with Public IP address allocation, to avoid address-sharing.
• Quality of Experience Improvement, bandwidth savings & Simplified Network management Initiatives, through Confidential Global Virtual Network connection implementation project, involved, architecture design, project execution planning, working with Global Confidential project team
• Improving Network coverage to under saved areas in the Country, through integration of Ericsson's Radio Network Controller (RNC) with Combi SGSN in a Multi-Operator Radio Access Network sharing project which aimed to extend coverage to Rural Areas
• Responsible in approving complex Designs for MPLS core solutions on behalf of customer; this involves proof of concept to insure the reliability and commercial success of the solution
• Responsible for meeting the customer to understand their requirements, review their existing technology footprint and propose new commercially viable but most importantly technically competent solutions for the customer
• Ensuring that provisioned Critical Telecommunication applications (eg MSS, MGW, HLRD, STP etc) traffic are given bandwidth priority within the core IP transmission links, by designing and implementing Quality of Service within the CORE IP MPLS network according to the QoS policy
• Involved in UTRAN expansion projects -Network, IP planning, Integration, testing & commissioning; IP protocol only, Iu over IP (Iu over IP) interfaces

Confidential

Packet Switched Core Lead

Responsibilities:

• Responsible for Mobile Broad band Core Network & ISP functions. Team of 5 Network professionals (4 working under PS Core, 1 under ISP)
• Improving network services provisioning capabilities initiatives, through Implementation of service awareness capability for PS Core Network Services (GGSN, AAA Server and IN platforms, Diameter Protocol, solutions equivalent to those provided by PCRF)
• Supported Integration of Charging Systems to PS core, successfully led a team in Implementation of Diameter Charging Interface between Flexi ISN & OCS V7.6.2-SC7
• Radio Access Network Initiatives, successfully planned and managed GERAN & UTRAN Radio Access Networks Integration project, Both IP & Frame Relay Protocols were used.
• Developed end-to-end solutions equivalent to those provided by Policy & Charging Rules Function (PCRF) without using PCRF (built from the ground-up), (e.g. "Internet Bomba" product: flat-rate unlimited data plan but limited speed to 64Kbps. Later changed to unlimited before 1GB used then limited speed to 256Kbps after bundle depletion). Gained strong experience with Policy & Charging Enforcement Function (PCEF)
• Managed GSN swap to replace IPS3.0 with Flexi ISN 4.0 & ex-Siemens SGSN with Flexi-ISN 4.0 & Combi-SGSN SG6 (team of 9 + vendor)
• Solution design during upgrade of PIX525 Firewalls to Juniper ISG100 firewalls with IDP modules & NSMXpress
• Designed & managed Mobile TV solution, MPESA solutions & other value-added solution for mobile internet subscribers
• Managed Public & Corporate APNs for individual &enterprise connectivity
• Provided Server Load Balancing solution through CISCO 4500 platforms for Value Added Service Network (VAS) integrated to the PS Core& provides network services equivalent to IP Multimedia Subsystems (IMS)
• Involved in Home Location Register (HLR) Upgrades, redesigning/ defining routes to HLR, integration, testing & commissioning. (SIGTRAN protocol)
• Daily operations activities on PS core, troubleshooting& correcting issues with SGSN & GGSN; CD upgrades; IOS upgrades
• Tracked KPIs for Packet core and address and deficiencies well in advance.

Confidential

Senior Network Administrator

Responsibilities:

• MSD is the largest nationwide government medical supplier & largest corporate private network in Tanzania
• Performed LAN restructuring implementation, redesigned VLAN based on different organization functions for simplified network resource-sharing & security, VTP implementations. Platforms CISCO switched 3750’s
• Performed WAN optimization - implementation of IPsec over GRE tunnels connecting 9 branches to head office in a hub & spoke topology, using EIGRP as IGP. Platforms CISCO routers 2960’s, 1700
• Performed bandwidth management involving installation & configuration of Peribit bandwidth manager platform across all company branches.
• Performed corporate security enhancement using CISCO ASA 5510 Firewalls installation/configuration for data access controls
• Web-cache & Internet content filtering/management solution initiatives for bandwidth-saving through Transparent Proxy Server implementation, using Linux Proxy Server with WCCP protocol enable on CISCO ASA for traffic redirecting to proxy transparently
• Other bandwidth management & virus protection initiatives, through Windows Server Updates Service (WSUS) deployment & McAfee EPO server deployment for centralized antivirus updates and management
• Performed Active Directory Forest implementation for reducing WAN link utilization by configuring updates to take place during low traffic time to allow business critical applications (ERP) get enough bandwidth during busy times.
• License costs management, through replacing Microsoft Exchange Server with Postfix SMTP server running on CentOS Linux server, configured to authenticate users via Active Directory, single sign-on. Platforms Dell Servers
• Performed Windows (VBS), Perl and bash scripting for simplified administration of user accounts, server backups etc, in a mixed Linux/Windows environment.
• Performed Wireless LAN deployment using CISCO platforms (WLAN controller & CISCO access points)
• Replaced Dell operating systems for all Data Center servers except Primary & Backup Domain Controllers (Windows Server 2003 to Red Hat Linux/RHEL)