Open to opportunities

ziyang liu

@ziyangliu

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Senior software engineer focusing on search, distributed systems, and backend performance.

China

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What I'm looking for

I’m seeking roles building large-scale search and data pipelines where I can optimize performance, mentor engineers, and apply algorithms to real-world systems.

I am a Senior Software Engineer specializing in search indexing, distributed systems, and high-concurrency backend platforms. I led the design and development of Quark Search’s indexing pipeline at Alibaba, improving link coverage to over 92% while architecting scalable, cloud-based data pipelines and mentoring interns.

I built Thyme at Amazon Prime Video to selectively run tests and reduce testing time by up to 44% using a Rust-based dependency analysis, and developed data-driven training and recommendation platforms at Huawei. I enjoy optimizing large-scale systems, building efficient crawlers (Playwright), and applying machine learning to prioritize high-value content.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Alibaba

Mar 2024 - Present (1 year 5 months)

Led design and development of Quark Search Engine's indexing pipeline, improving link coverage to over 92% for key sites and optimizing real-time link discovery; architected scalable cloud data pipelines and prioritized high-value links under resource constraints.

Indexing Distributed Crawling Playwright Machine Learning Cloud Computing Data Pipelines Monitoring

Software Development Engineer II

Amazon Prime Video

Oct 2022 - Apr 2023 (6 months)

Designed and implemented Thyme, a custom test-selection strategy and Rust-based dependency analyzer, reducing testing time by up to 44% and improving developer build efficiency across Prime Video.

Rust CI CD Build Systems Automation)Performance Optimization

Software Engineer I

Huawei Technologies

Jun 2021 - Oct 2022 (1 year 4 months)

Contributed to an enterprise search engine and built an online training platform, automating batch and streaming ETL, data warehousing, and cloud indexing to enhance course recommendations and user profiling.

Java Python Data Warehousing ETL Cloud Storage Batch Processing Profiling

Education

Degrees, certifications, and relevant coursework

University of Bristol

Bachelor of Engineering (Honors), Electrical & Electronic Engineering

2018 - 2021

Completed a Bachelor of Engineering (Honors) in Electrical & Electronic Engineering at the University of Bristol (Oct 2018–Oct 2021). Relevant coursework included Data Structures & Algorithms, Network Protocols (TCP/IP), Embedded Systems in C, Operating System Engineering, Optimization Theory, Database Management Systems, FPGA Design, Calculus, Linear Algebra, and Statistics.