I help lead the technical work of our Platform organization (~15 teams).These technical areas include:* The infrastructure for teams to run code in our microservice backend, including deploys, container orchestration, RPCs, service discovery, and observability* The infrastructure for teams to serve their GraphQL endpoints from our backend to frontends* The infrastructure for our data storage systems* The backend systems that communicate with our hardware, including to ingest telemetry and serve configuration updates and firmware upgrades* The data storage system that records and serves our customers’ time series data* Scalability and reliability across our stack* Security across our backendI've helped our teams execute in a number of ways:* Collaborate on system designs, issue investigations, and code reviews* Collaborate on the development of new products that push Samsara’s existing abstractions or infrastructure* Collaborate on team roadmaps and OKRs* Set and communicate our scaling and reliability goals* Lead the responses to some of our highest-impact production incidents* Scale our engineering processes* Organize forums for engineers to communicate the stories of what we’ve accomplished* Mentor engineers across levels* Interview, with a focus on our Staff+ engineering, engineering exec, and new engineering roles* Develop our promotion processes and career frameworkI helped build the first versions of our fleet products and the early infrastructures for our firmware, backend, and frontend. This work included leading the development of the OBD networking stack for our firmware, the data ingestion system for our backend, and the fleet application for our frontend.The engineering work behind Samsara's products spans mechanical, electrical, embedded and Linux firmwares that run on millions of systems, multi-region backend composed of hundreds of services, web and mobile frontends, and integrations with other vendors across these stacks.

With the Spanner team, developed the Spanner distributed database from prototype to core production service.I was the primary engineer behind the Spanner backup and restore service, creating the first version of the backup and restore systems, productionizing these for our first customer's performance requirements (F1, ads), extending the system to be system resilient to regional outages, creating our automatic backup management system, leading the addition of tape integration, and generally scaling backup and restore from start to thousands of Google teams.I mentored four engineers to become full time core Spanner contributors, gave talks on Spanner to other teams and discussed their integration plans, and wrote parts of our OSDI 2012 best paper.

Thesis: Improving File System Consistency and Durability with Patches and BPFSProjects and publications:- BPFS: Faster and stronger consistency for file systems with byte-addressable, persistent memory. Awarded the 2020 Persistent Impact Prize in systems by the Non-Volatile Memory Workshop. http://bpfs.cs.ucla.edu- Featherstitch: Modular file system consistency. Awarded best paper, SOSP 2007. http://featherstitch.cs.ucla.edu/- Libprefetch: Faster nonsequential file access. http://libprefetch.cs.ucla.edu/- JPred: Modular and typesafe predicate dispatch in Java. http://www.cs.ucla.edu/~todd/research/jpred.html

Teaching assistant for CS 111 (undergrad operating systems).

Designed and developed new distributed data movement capabilities for VMFS ESX clusters to improve performance and load balancing. Contributed to the design of new VMFS space saving technologies.

Developed new file system consistency protocol design principles for phase change memory that yield both significantly faster and safer file systems than traditional consistency protocols.

Engineer intern with the AdSense and Java Infrastructure groups.Designed and developed a declarative RPC representation to replace AdSense's existing hand-coded RPC system. Extended internal AdSense RPC systems to permit further automation of ad analysis.

Designed and developed business process development tools for Appian Enterprise.

Co-designed and developed Windows CE's UPnP AV Framework, a lightweight toolkit that simplifies UPnP AV DCP implementations. Contributed to the WindowsCE C++ STL implementation.

Amorphous computing research with the Project on Mathematics and Computation group in CSAIL.

Developed a joystick input option for the simulation architecture JMASS, a graphical frontend that streamlined and further automated geometrical testing of solid propellant missiles, a graphical communication link analyzer that enabled engineers to assess flight tests more quickly and thoroughly, software that helped determine the feasibility of lower-frequency wind sampling for Tactical Unmanned Air Vehicle testing. Designed updates to the missile simulation system BADGER. Ported Solaris and Irix programs to Solaris, Linux, and Cygwin.

Teaching assistant for CS 201 (object oriented design, intro to data structures, and software engineering).

Intern with the Missile Guidance Directorate in the Aviation and Missile Research, Design, and Engineering Center at Redstone Arsenal. Designed the target recognition training backend for the directorate's memory-less target recognition system.