Daniel Liu - Software Engineer at Google

Daniel Liu

Software Engineer at Google

Sunnyvale, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Daniel Liu is a software engineer with nine years of experience specializing in high-performance RPC systems and distributed services, currently contributing to gRPC Java and Go at Google. He brings deep systems-level expertise across Java, Go, C++, Python, and Scala, and has a strong track record building production features for load balancing, metrics, and service-mesh integrations (notably xDS/ORCA and ring-hash improvements in the grpc/grpc-java project). His internships at major companies (Twitter, Zynga, Lifion/ADP, Cyclica, and Genesys) showcase practical impact across streaming systems, data pipelines, microservices, and analytics—often delivering substantial performance and reliability gains. Comfortable across the stack, he pairs protocol-level work (gRPC, Protocol Buffers, HTTP/2) with database, containerization, and orchestration tooling (MySQL, Docker, Kafka, ZooKeeper). An efficient problem-solver, he has implemented automated AST-based migrations and custom tree traversals to modernize RPC APIs, revealing a knack for tooling that reduces developer cost. Based in Sunnyvale and trained at the University of Waterloo, he blends rigorous academic foundation with pragmatic production engineering.

9 years of coding experience

2 years of employment as a software developer

International Baccalaureate Diploma, International Baccalaureate Diploma at International Baccalaureate

Ontario Secondary School Diploma, Cumulative Average 97%, Ontario Secondary School Diploma, Cumulative Average 97% at Westdale Secondary School

Honours Bachelor of Computer Science, Computer Science, Distinction, Honours Bachelor of Computer Science, Computer Science, Distinction at University of Waterloo

French, Chinese, English

Github Skills (10)

xs10

javas10

proto10

microservices-application10

load-balancing10

xsd10

microservices10

java10

grpc10

testing10

Programming languages (5)

JavaGoHTMLGroovyPython

Github contributions (5)

grpc/grpc-java

Feb 2023 - Mar 2026

The Java gRPC implementation. HTTP/2 based RPC

Role in this project:

Back-end Developer

Contributions:47 reviews, 9 PRs, 50 comments in 3 years 1 month

Contributions summary:Daniel primarily focused on enhancing the gRPC-Java implementation, particularly around the xDS (xDS is a set of APIs that enables service discovery and load balancing in a service mesh) and ORCA (Orca - is a load reporting specification that allows gRPC servers to report load metrics to clients) features. Their contributions include implementing server-side metric reporting, supporting EPS (Errors Per Second) in client-side weighted round robin load balancing, and adding LRS (Load Reporting Service) named metrics support. Additionally, the user worked on setting the request hash key for the ring hash LB policy, expanding the project's capabilities in load balancing and service mesh integration.

grpcjavarpcmicroservicesproto

danielzhaotongliu/MALTrends

May 2019 - Feb 2020

Web scraper for MyAnimeList statistics from the Wayback Machine internet archive

Contributions:26 commits, 1 PR, 27 pushes in 9 months

statisticswayback-machinewebscraper

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