Lohith Bellad
Senior Staff Software Engineer at Zscaler
Fremont, California, United States
Summary
🤩
Rockstar🎓
Top SchoolLohith Bellad is a Senior Staff Software Engineer with 11+ years building high-performance distributed systems, specializing in performance engineering, congestion control, and systems-level debugging. He has architected and optimized userland TCP/IP and QUIC stacks at Cloudflare and Zscaler, contributing production-grade BBR implementations and QUIC improvements (notably to the popular quiche library) that measurably improved throughput and reliability. Comfortable from kernel modules and device drivers to Rust and C userland services, he couples deep OS/kernel knowledge with practical telemetry and lab-driven experimentation to tune systems at global scale. He has a track record of turning theoretical algorithms into production gains—e.g., a 25% performance boost from modularizing a userland TCP stack and implementing Cubic—and routinely builds protocol testbeds to validate optimizations. Based in Fremont with a master’s in computer networks from USC, he thrives on bridging research-grade techniques with operational rigor to solve hard infrastructure problems.
11 years of coding experience
10 years of employment as a software developer
Master's degree, Electrical Engineering (Computer Networks), Master's degree, Electrical Engineering (Computer Networks) at University of Southern CaliforniaBachelor of Engineering (B.E.), Electronics and Communications Engineering, Bachelor of Engineering (B.E.), Electronics and Communications Engineering at Sri Jayachamarajendra College of Engineering
English, Kannada, Hindi
Github Skills (5)
http10
rust10
network-programming10
quic10
api-design8
Programming languages (3)
Github contributions (5)
cloudflare/quiche
Sep 2019 - Jan 2024
🥧 Savoury implementation of the QUIC transport protocol and HTTP/3
Role in this project:
Back-end Developer
Back-end DeveloperContributions:58 reviews, 17 PRs, 73 pushes in 4 years 4 months
Contributions summary:Lohith primarily contributed to the `quiche` project, focusing on implementing and improving the QUIC transport protocol. Their work involved fixing bugs related to delivery rate checks and congestion window recovery logic. The user added features like an API to set the maximum pacing rate and addressed the issue of the idle_restart flag within the BBR congestion control implementation. The user's contributions modified various files related to the core functionality of the QUIC protocol, including pacer, recovery, and configuration.
quichttp3protocolrustnetwork-programming
lohith-bellad/tftpb
Jun 2015 - Mar 2020
Trivial File transfer Protocol according to RFC 1350
Contributions:4 PRs, 9 pushes, 2 branches in 4 years 9 months
transfer-protocolfile-transferfile-transfer-protocolrfctrivial
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