Service mesh networking for Google Cloud.

Leading various software engineering projects related to:- Multi-tenancy and quota isolation.- Compression for cloud network cost savings.- Metrics ingestion path optimizations for cost savings.

Envoy SME for what eventually became VPC Lattice.

ZippyDB load shedding and multi-tenancy. Most of that work went into FBThrift:https://github.com/facebook/fbthrift/commit/59f5145e2a79740ecab3445ee21b8280276ef51d

Software engineer in the network resilience group, focused on load shedding mechanisms. Most of my work is public and open-source work on Envoy Proxy.-- Designed and implemented adaptive concurrency control in Envoy. Deployed to multiple high-profile Lyft services. I spoke about this at Kubecon Europe 2020.-- Designed, implemented and deployed Envoy retry budgets pervasively across Lyft's microservice infrastructure.-- Designed and implemented admission control/client-side throttling as a load shedding mechanism in Envoy to protect Lyft microservices.-- Implemented an experimentation tool to generate network request patterns that exercise edge-cases in the work above.I was also a member of the Envoy security team and fix lead for the 1.14.3/1.13.3/1.12.5 releases.

Storage - core data path. Writing C++ code and counting memory allocations.Projects:-- Reduced memory overhead of the filesystem's SSD tier cache insertions by 90% using counting bloom filters. This allowed for an order of magnitude increase in the feasible workload working set sizes for well-behaved ILM.-- Decreased mallocs by 30% in the random read path and 15% in the random write path using arena allocators.-- Designed and implemented improvements for heterogeneous clusters via adaptive load balancing and data replica placement. This was one of the major changes that lead to the ability to mix hybrid/all-flash nodes in the same storage cluster.-- Investigation into Nutanix Cluster Checker performance resulting in decreased run time from 30+ minutes down to less than 1.5 minutes.

ASR9000 network processor hardware abstraction team.

Server Virtualization support. UCS, Nexus switches, and various hypervisors.

Computational fluid dynamics.Advisor: John Blondin