Experience

Affirmed Networks

• United States
• Wireless Services
• 1 - 100 Employee

• Senior Principal Software Engineer

  • Aug 2011 - Present



Airvana

• United States
• Wireless Services
• 100 - 200 Employee

• Principal Software Engineer

  • Jan 2006 - Aug 2011

  EV-DO - DO Infrastructure team: Owner of the Topology Manager and Abis components. These two components run a proprietary network-layer protocol used to setup peering session between RN's (Radio Networks) and RNCs (Radio Network Controllers) and exchange node information and configuration. Ported the Topology Manager and Abis components from VxWorks to Linux. Designed and implemented the TM/Abis Variable Port for the RNC9000. The modifications consist of allowing the RNC to communicate to… Show more EV-DO - DO Infrastructure team: Owner of the Topology Manager and Abis components. These two components run a proprietary network-layer protocol used to setup peering session between RN's (Radio Networks) and RNCs (Radio Network Controllers) and exchange node information and configuration. Ported the Topology Manager and Abis components from VxWorks to Linux. Designed and implemented the TM/Abis Variable Port for the RNC9000. The modifications consist of allowing the RNC to communicate to the DOM the destination TCP port number it should use for its Abis Signaling traffic. Responsible for the Fast-rehoming and SC switchover features. These features provide the redundancy capability for the RNC. UAG - routing team: Ported the IP routing stack from third party IP Infusion to the Universal Access Gateway (UAG) architecture. Designed and implemented various routing components for the UAG such as interfaces, routing-profile and virtual-network address pool. Show less EV-DO - DO Infrastructure team: Owner of the Topology Manager and Abis components. These two components run a proprietary network-layer protocol used to setup peering session between RN's (Radio Networks) and RNCs (Radio Network Controllers) and exchange node information and configuration. Ported the Topology Manager and Abis components from VxWorks to Linux. Designed and implemented the TM/Abis Variable Port for the RNC9000. The modifications consist of allowing the RNC to communicate to… Show more EV-DO - DO Infrastructure team: Owner of the Topology Manager and Abis components. These two components run a proprietary network-layer protocol used to setup peering session between RN's (Radio Networks) and RNCs (Radio Network Controllers) and exchange node information and configuration. Ported the Topology Manager and Abis components from VxWorks to Linux. Designed and implemented the TM/Abis Variable Port for the RNC9000. The modifications consist of allowing the RNC to communicate to the DOM the destination TCP port number it should use for its Abis Signaling traffic. Responsible for the Fast-rehoming and SC switchover features. These features provide the redundancy capability for the RNC. UAG - routing team: Ported the IP routing stack from third party IP Infusion to the Universal Access Gateway (UAG) architecture. Designed and implemented various routing components for the UAG such as interfaces, routing-profile and virtual-network address pool. Show less



Nortel Networks

• Telecommunications
• 700 & Above Employee

• Senior Software Engineer

  • Jul 2003 - Dec 2005

  Worked in the IS-IS project. Responsible for porting the third party IS-IS code from Nexthop to the existing Multi-service Provide Edge MPE9500 routing architecture. Designed and implemented the IS-IS non-stop-routing feature for the MPE9500. Responsible for IS-IS data replication to the standby card so IS-IS can fail-over seamlessly - no loss of IS-IS adjacencies. Restructured existed Nexthop interface data structure to support both IPv4 and IPv6 on a physical interface. Involved in… Show more Worked in the IS-IS project. Responsible for porting the third party IS-IS code from Nexthop to the existing Multi-service Provide Edge MPE9500 routing architecture. Designed and implemented the IS-IS non-stop-routing feature for the MPE9500. Responsible for IS-IS data replication to the standby card so IS-IS can fail-over seamlessly - no loss of IS-IS adjacencies. Restructured existed Nexthop interface data structure to support both IPv4 and IPv6 on a physical interface. Involved in the initial design to support Multicast (IGMP and PIM) on the MPE9500. Show less Worked in the IS-IS project. Responsible for porting the third party IS-IS code from Nexthop to the existing Multi-service Provide Edge MPE9500 routing architecture. Designed and implemented the IS-IS non-stop-routing feature for the MPE9500. Responsible for IS-IS data replication to the standby card so IS-IS can fail-over seamlessly - no loss of IS-IS adjacencies. Restructured existed Nexthop interface data structure to support both IPv4 and IPv6 on a physical interface. Involved in… Show more Worked in the IS-IS project. Responsible for porting the third party IS-IS code from Nexthop to the existing Multi-service Provide Edge MPE9500 routing architecture. Designed and implemented the IS-IS non-stop-routing feature for the MPE9500. Responsible for IS-IS data replication to the standby card so IS-IS can fail-over seamlessly - no loss of IS-IS adjacencies. Restructured existed Nexthop interface data structure to support both IPv4 and IPv6 on a physical interface. Involved in the initial design to support Multicast (IGMP and PIM) on the MPE9500. Show less



Spring Tide Networks

• Software Engineer

  • 2000 - 2004



Nokia

• Finland
• Telecommunications
• 700 & Above Employee

• Senior Software Engineer

  • Jun 1999 - Jul 2003

  Supported and maintained RIP and OSPF routing protocols for the Spring Tide IP Service Switch (IPSS). Fixed bugs found by quality assurance engineers or customers. Enhanced the third party OSPF code (Phase 2) to meet customers' scalability requirements. Co-designed, implemented and supported the OSPF "hot-standby" redundancy in IPSS. Responsible for OSPF data replication to the standby card so OSPF can fail-over seamlessly - no loss of OSPF neighbor connections. Re-designed the… Show more Supported and maintained RIP and OSPF routing protocols for the Spring Tide IP Service Switch (IPSS). Fixed bugs found by quality assurance engineers or customers. Enhanced the third party OSPF code (Phase 2) to meet customers' scalability requirements. Co-designed, implemented and supported the OSPF "hot-standby" redundancy in IPSS. Responsible for OSPF data replication to the standby card so OSPF can fail-over seamlessly - no loss of OSPF neighbor connections. Re-designed the existing routing architecture to support route policies. Implemented and maintained access-lists, route-maps, distribute-lists and redistribution policies. Worked in the BGP-4 project. Responsible for designing and implementing: BGP route policies, configuration, capabilities negotiation and other aspects of the BGP protocol. Co-designed, implemented and supported the BGP/MPLS VPN (RFC 2547). Improved the existing routing code in the Spring Tide IPSS to support the increasing number of virtual routers (from 200 to 1000 plus). Project includes data structures reorganization, memory and system resources management. Worked in the ISIS project. Responsible for porting the third party ISIS code from Phase 2 to the existing Spring Tide routing architecture. 3Com Corporation (routing team Show less Supported and maintained RIP and OSPF routing protocols for the Spring Tide IP Service Switch (IPSS). Fixed bugs found by quality assurance engineers or customers. Enhanced the third party OSPF code (Phase 2) to meet customers' scalability requirements. Co-designed, implemented and supported the OSPF "hot-standby" redundancy in IPSS. Responsible for OSPF data replication to the standby card so OSPF can fail-over seamlessly - no loss of OSPF neighbor connections. Re-designed the… Show more Supported and maintained RIP and OSPF routing protocols for the Spring Tide IP Service Switch (IPSS). Fixed bugs found by quality assurance engineers or customers. Enhanced the third party OSPF code (Phase 2) to meet customers' scalability requirements. Co-designed, implemented and supported the OSPF "hot-standby" redundancy in IPSS. Responsible for OSPF data replication to the standby card so OSPF can fail-over seamlessly - no loss of OSPF neighbor connections. Re-designed the existing routing architecture to support route policies. Implemented and maintained access-lists, route-maps, distribute-lists and redistribution policies. Worked in the BGP-4 project. Responsible for designing and implementing: BGP route policies, configuration, capabilities negotiation and other aspects of the BGP protocol. Co-designed, implemented and supported the BGP/MPLS VPN (RFC 2547). Improved the existing routing code in the Spring Tide IPSS to support the increasing number of virtual routers (from 200 to 1000 plus). Project includes data structures reorganization, memory and system resources management. Worked in the ISIS project. Responsible for porting the third party ISIS code from Phase 2 to the existing Spring Tide routing architecture. 3Com Corporation (routing team Show less



3Com

• Computer Networking
• 200 - 300 Employee

• Software Engineer

  • Jul 1996 - Jun 1999

  Designed and implemented IP diagnostic applications such as ping, traceroute and DNS client. Worked with the CoreBuilder's administer console which allows the users to interact easily with the applications. Fixed bugs and implemented additional features for the IP multicast application (DVMRP/IGMP) to support various customers' requested. Designed and implemented the Virtual Router Redundancy Protocol (VRRP). Designed Protocol Independent Multicast - Sparse Mode (PIM-SM) and… Show more Designed and implemented IP diagnostic applications such as ping, traceroute and DNS client. Worked with the CoreBuilder's administer console which allows the users to interact easily with the applications. Fixed bugs and implemented additional features for the IP multicast application (DVMRP/IGMP) to support various customers' requested. Designed and implemented the Virtual Router Redundancy Protocol (VRRP). Designed Protocol Independent Multicast - Sparse Mode (PIM-SM) and Multicast Autonomous System Border Router (MABSR). Show less Designed and implemented IP diagnostic applications such as ping, traceroute and DNS client. Worked with the CoreBuilder's administer console which allows the users to interact easily with the applications. Fixed bugs and implemented additional features for the IP multicast application (DVMRP/IGMP) to support various customers' requested. Designed and implemented the Virtual Router Redundancy Protocol (VRRP). Designed Protocol Independent Multicast - Sparse Mode (PIM-SM) and… Show more Designed and implemented IP diagnostic applications such as ping, traceroute and DNS client. Worked with the CoreBuilder's administer console which allows the users to interact easily with the applications. Fixed bugs and implemented additional features for the IP multicast application (DVMRP/IGMP) to support various customers' requested. Designed and implemented the Virtual Router Redundancy Protocol (VRRP). Designed Protocol Independent Multicast - Sparse Mode (PIM-SM) and Multicast Autonomous System Border Router (MABSR). Show less