Matt Ranney
Principal Engineer at DoorDash
Pittsburgh, Pennsylvania, United States
Summary
🤩
Rockstar🎓
Top SchoolMatt Ranney is a Principal Engineer with 16 years of experience designing and scaling distributed systems, networking stacks, and data-intensive backends, currently driving platform and infrastructure work at DoorDash from Pittsburgh. He has deep OS and networking expertise applied across mobile ecosystems and self-driving simulation at Uber ATG, where he led large-scale simulation architecture, hybrid cloud GPU management, and migrations to containerized cloud environments. As Voxer’s founder/CTO he built one of the largest production node.js deployments of its time, pushing the limits of Redis, Riak, and real-time voice systems, and he continues to contribute to notable open-source projects such as libpcap bindings and the node Redis client. Known for translating low-level performance work into production reliability, he pairs hands-on engineering with technical leadership across teams and long-lived systems.
16 years of coding experience
18 years of employment as a software developer
BS Computer Science, BS Computer Science at Calvin University
Stackoverflow
1,638reputation
131kreached
25answers
0questions
asynchronous
top-5%
concurrency
top-5%
Github Skills (29)
javascript10
system-programming10
back-end-development10
redis10
ip10
go10
packet-capture10
tcp10
libpcap10
nodejs10
aggregator9
testing9
aggregate9
c-language9
asynchronous9
Programming languages (7)
Github contributions (5)
uber-archive/cpustat
Jun 2015 - Jul 2016
high frequency performance measurements for Linux
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:1 release, 85 commits, 7 PRs in 1 year 1 month
Contributions summary:Matt made significant changes to the `cpustat` project, focusing on performance measurement for Linux systems. Their work included a major rewrite of the core code, introducing histograms for performance data collection and scaling output to correct sample sizes. They also addressed scaling bugs and added features such as filtering by users and a command-line interface. Finally, they incorporated a client for retrieving data.
perfptracelinuxmeasurementspower-management
node-pcap/node_pcap
May 2010 - Feb 2015
libpcap bindings for node
Role in this project:Back-end Developer
Back-end DeveloperContributions:141 commits, 11 PRs, 10 pushes in 4 years 9 months
Contributions summary:Matt primarily contributed to the development of libpcap bindings for Node.js. Their work involved implementing functionalities such as device discovery, packet statistics, and closing network interfaces. Furthermore, they refactored the decoder to take offsets and expose TCP payload as a buffer slice. They also improved TCP session tracking.
packet-capturesnifferlibpcapnodejspacket
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.