Dec 2019 – Dec 2024 · 5 yrs · San Francisco, California, United States · Remote

• Group engineering lead for the entire Platform and DevProd org providing leadership and guidance across all the subteams.
• Founder of the Core Platform, Kotlin, and Performance Teams at Doordash.
• Helped scale all of engineering through common components and services for all of Doordash to build upon
• Built Doordash's core framework that handles GRPC, HTTP, Kafka and Cadence clients and servers via a unified operating model
• Coordinated across the entire company while designing core pieces of Doordash 2.0 and 3.0
• Coordinated with multiple open source projects and contributed back our fixes and enhancements after maintaining the internal forks
• Designed the load testing framework for Doordash, preparing Doordash for events like our SuperBowl Ad, and other large promotions
• Built and launched Doordash's secure vault for PII and PCI data to allow for multi-vendor payment processing and secure storage of private data with audited and controlled tokenized access to the underlying data

Nov 2018 – Dec 2019 · 1 yr 1 mo · San Francisco, California

• Helping Lime scale!
• Leading the Engineering org at Lime
• Created Lime's service architecture and got buy in from the other members of Eng leadership to ensure a stable and scalable future for Lime as it started to adopt a Service Oriented Architecture
• Designed, implemented and successfully launched multiple custom services to improve the performance and capabilities of Lime's core systems, removing substantial amounts of load from the monolith and it's DB
• Worked extensively across the org to provide technical guidance to teams designing new features to ensure scalability, stability, security and safety
• Mentored engineers in best practices and design considerations to pay attention to at scale, across a variety of levels from interns to senior members.
• Migrated from Elastic beanstalk to Kubernetes based environment
• Designed and launched Lime's Flink on k8s system to allow teams to begin adopting a streaming, reactive architecture
• Interfaced with external vendors to ensure next-generation projects had the capabilities necessary to improve the security end-to-end for Lime's fleet

Jan 2018 – Sep 2018 · 8 mos · San Francisco, California

• Max was acquired by Applovin September 2018!
• Leading the backend team for MAX.
• Architecting and building large scale systems using Go and Python on Kubernetes.
• Providing extensive domain knowledge and experience to other teams as well as partners to move the entire mobile advertising space forward in a manner that is better for both developers and advertisers.

Nov 2016 – Jan 2018 · 1 yr 2 mos · San Francisco Bay Area

• Helping Airbnb improve its performance across the board. Most recently lead the design and successful launch of Sparsam, our own version of thrift bindings for Ruby that are substantially faster than the standard open source variants: https://github.com/airbnb/sparsam

Jan 2016 – Oct 2016 · 9 mos

• End-to-End Mobile and Full stack engineer on a small rapid-prototyping team helping design the future of Facebook Messenger. Primarily focused on creating and enhancing new backend systems to support new ideas and features including the design of backend systems and data model for Instant Games!

Oct 2013 – Dec 2015 · 2 yrs 2 mos

• MoPub was acquired by Twitter in October 2013!
• New projects include distributed systems based upon Go, Scala and Lua as well as continued C++11 and python development.
• Developed specialized caching system reducing the CPU and Bandwidth used by our largest system by >30%
• Redesigned all of the Exchange Backend systems to work in a multi-datacenter active-active deployment
• Extensive modifications to the Exchange C++ Libevent stack to provide greater performance, predictability and monitoring as well as integrate it with other technologies such as Zookeeper for service resolution
• Work with Neteng and IT to support systems with our unique footprint inside the Twitter datacenters
• Provide technical leadership and design feedback across the organization to ensure all future products are designed to scale predictably and have appropriate metrics in place to ensure success from both an engineering and product perspective

Sep 2013 – Dec 2015 · 2 yrs 3 mos

• Now part of Twitter!
• C++11 and Python programming for large scale distributed cloud based systems.
• Design, develop and maintain Adserver, Marketplace and Objectstore systems built upon tornado and libevent with both callback and co-routine design paradigms depending on project needs and code clarity.

Apr 2013 – Sep 2013 · 5 mos

• Designing an autoscaling L4 and L7 distributed application delivery controller and control systems in C, C++ and Python. Use of DPDK, a custom network stack and specialized threading model to ensure the greatest possible performance, pushing more packets/second/core than any comparable platform at lower latencies.

Jul 2006 – Apr 2013 · 6 yrs 9 mos

• Infrastructure software engineer for NX-OS.
• Lead development of next generation LAN segmentation techniques and control applications (Trill-FGL, VN-Segment, VXLAN).
• Lead engineer for VDCs for Cisco NX-OS, including planning and designing new features and implementing customer requested features.
• Analyze and enhance various open source virtualization options to fit our needs including KVM, Xen and OpenVZ.
• Part of team responsible for porting NX-OS to a newer 2.6 Linux Kernel and upgrading the build infrastructure from GCC 3 to GCC 4 toolchain.
• Maintenance and feature addition to VLAN and VSAN infrastructure.
• Development and maintenance of Fibre channel switch forwarding engine.

Sep 2005 – May 2006 · 8 mos

• Computer troubleshooting
• Customer service

Dec 2003 – May 2006 · 2 yrs 5 mos

• Computer Troubleshooting
• Network Administrator
• Purchasing Advisor
• Website Administrator
• Security Advisor
• IP based security network setup
• SQL Database Administrator
• Windows 2003 and Exchange maintenance
• Remote Site Setup
• Terminal Server maintenance