My work at digital ocean is focused in the networking control plane for connetcivity between routing and Hypervisor layers as well as tenant communication over VPC (Virtual Private Cloud). Distributed services in golang, mysql, bgp (bird), alerting and metrics for management of our distributed servers. Modifications of linux networking via OVS, custom configuration apps and linux networking such as iptables, namespaces.Developed tooling for next generation NIC performance evaluation. Optiimizing cpu affinity, queueing parameters, Nic hw acceleration tweakables, and numa assignment to cover a wide range of customer uses cases and consistent performance evaluation. Both with and without tunneling present.tunneling protocols: stt and vxlanNetworking protocols BGP

I work in the RPD (Routing Protocol Daemon) Infrastructure group. Primarily this infrastructure group is the service layer between the routing protocols and the kernel. The infrastructure provided includes route resolution, Route and next-hop data structure management, memory allocation, tracing and debugging services, support for redundancy mechanisms, route table management, routing policy, and several other miscellaneous services.Responsibilities vary from day to day but include: support for new features, bug isolation and resolution, scaling and performance enhancements, feature design and review services, customer escalation support, mentorship of others in the group, working with protocol teams to ensure proper usage of infrastructure services and enhancements as needed, direct customer interactions both on new features ( requirements,design and delivery) and problem isolation on critical network issues.

Co founder of Routing Dynamics. We provided contract engineering and consultancy services to various networking and computing companies. Projects covered a wide range of industries including, large distributed systems in the supercomputing industry, distributed filesystems, automation of highly scaled wifi test systems, identity management systems, routing protocol development (gated) and design review for networking startups. My roles included team and project management, customer facing interactions, and software development on many of the projects.

During my tenure at Cisco I worked on the CRS-1 project from early inception through first customer shipment and served as the techincal lead for the Routing Policy Language project. We designed, developed, and delivered RPL as the primary language for expressing routing policies on the CRS-1. RPL was designed to be a much more modular and scalable solution for expressing routing policies than previous solutions. It allows routing polices to be highly reused and expressed in much more compact representations. It incorporates several features that enable users to easily identify where specific polices are applied and used so that the impact of changes can be easily visualized at scale. Finally, it dramatically reduced the implicit behaviors and knowledge required for understanding the intent of routing policies inherent in previous solutions. I lead the RPL team from initial concept through several beta releases as the CRS-1 platform was developed and finally through first customer ship of the platform. I was directly responsible for many of the syntactic features of RPL as well as doing much of the implementation work in the routing protocols. My responsibilities also included working with other team leads to design, review, and resolve software architectural issues during regular review meetings. This was a large software project with several hundred software engineers. CRS-1 delivered a new hardware platform running a new operating system, with a heavily redesigned software architecture and significantly modified routing protocol code.I also attended IETF and NANOG meetings in my role at Cisco.

Ascend Communications acquired Netstar in the late 1990's. After the acquisition my role changed, I did more onsite customer interaction at several ISP's ranging from TIER-1 providers to smaller regional providers. I provided continuation engineering for releases deployed in the field and escalation services for any issues the regular TAC could not resolve. I also represented Ascend at various conferences including Nanog and IETF.

Netstar was an IP router startup started in the late 1990's in Mn. It was acquired by Ascend Communications which was then Acquired by Lucent. This was Long enough ago that LinkedIn has no valid link to information about the company. It will auto fill a link that is incorrect.I filled a few roles at Nestar. I directly interfaced with customers providing both customer escalation services and onsite support as needed. Our routing product supported BGP, IS-IS, OSPF and RIP with several extensions to gated. I was also involved in supporting many various line cards of the era including: ATM, FDDI ,HSSI, Ethernet, HIPPI, CDDI, and Packet over Sonet.

Unix Sysadmin responsible for uptime of systems. Involved in evaluating new technologies to improve network and fileserver performance. Evaluated early ATM technology (Taxi 100mbit interfaces and then later full 155 mbit interfaces). Helped with image processing tasks for research conferences. Worked with campus networking group as new building was designed to become the first building on campus with a full internal fiber network.