Issa Abu Kalbein
Software Engineer
Summary
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RockstarIssa Abu Kalbein is a software engineer with three years of experience currently contributing at Microsoft and actively involved in high-performance, cloud-native projects. He has hands-on backend expertise demonstrated by contributions to the widely used Envoy proxy—implementing TCP/UDP proxy features, access logging enhancements, and reliability fixes for session handling and retries. Comfortable working on core networking primitives, he focuses on observability and robust behavior under load, such as header/trailer propagation and fine-grained logging controls. Colleagues rely on him to diagnose protocol-level bugs and deliver pragmatic optimizations that improve production resilience. Issa combines pragmatic problem-solving with a curiosity for low-level systems details, making him effective in distributed systems and edge networking work.
3 years of coding experience
Github Skills (14)
env10
access-log10
proxy10
c-language10
cprogramming-language10
envoyproxy10
tproxy10
convoy10
http-proxy10
http9
docker4
dockers4
kubernetes3
kubernetes-pods3
Programming languages (1)
Github contributions (3)
envoyproxy/envoy
Dec 2022 - Jan 2025
Cloud-native high-performance edge/middle/service proxy
Role in this project:
Back-end Developer
Back-end DeveloperContributions:59 reviews, 26 PRs, 146 comments in 2 years 1 month
Contributions summary:Issa primarily worked on the core functionality of Envoy, focusing on the TCP proxy and UDP proxy features. Their contributions included implementing response header and trailer propagation in the TCP proxy, and adding various access logging features. They also fixed several bugs and optimized the behavior of the UDP proxy filter, including improvements to session handling and retry mechanisms. Moreover, they added the command operator for the current time in access logging, enabling more granular logging control.
nanoservicesmore-catsgolangcontainersproxy
IssaAbuKalbein/envoy
Jan 2023 - Feb 2025
Cloud-native high-performance edge/middle/service proxy
Contributions:194 pushes, 56 branches in 2 years 1 month
golangsmptencent-cloudproxyedge
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