Spencer Lewis
Software Engineer at Square
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolSpencer Lewis is a software engineer in New York with a decade of experience building traffic management systems and the automation that operates them. At Square since 2017, he focuses on traffic and observability for edge proxies and an Envoy-based service mesh across both on-prem and Kubernetes deployments, earlier contributing to container orchestration and resource isolation. He’s an active backend contributor to the high-profile Envoy proxy, adding circuit breaker and routing improvements that help prevent overloads and tighten request behavior. Comfortable across systems and implementation details, he pairs low-level protocol and performance work with pragmatic automation for deploys and resourcing. With a CS degree from UNC Chapel Hill and early research and teaching experience in functional programming and video compression, he brings both academic rigor and production-hardened instincts. Colleagues rely on him for thoughtful, incremental improvements that reduce operational risk at scale.
10 years of coding experience
1 year of employment as a software developer
Bachelor of Science (B.S.), Computer Science, Bachelor of Science (B.S.), Computer Science at University of North Carolina at Chapel Hill
Github Skills (9)
circuit10
http10
c-language10
envoyproxy10
cprogramming-language10
circuit-breaker10
routers9
router9
testing8
Programming languages (3)
Github contributions (5)
envoyproxy/envoy
Mar 2019 - Oct 2020
Cloud-native high-performance edge/middle/service proxy
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 8 commits, 8 PRs in 1 year 6 months
Contributions summary:Spencer contributed to the Envoy proxy, focusing on core backend functionality and optimizations. They implemented circuit breaker enhancements, tracking resource counts to prevent overload. Further contributions involved ensuring consistency in upstream request statistics, modifying the router's retry behavior, and improving the HTTP connection manager. The user also added support for header formatting operators and the downstream protocol error flag.
nanoservicesmore-catsgolangcontainersproxy
spenceral/envoy
Mar 2019 - Oct 2020
Cloud-native high-performance edge/middle/service proxy
Contributions:2 PRs, 72 pushes, 14 branches in 1 year 7 months
golangtencent-cloudproxyedgeperformance
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