# Yutsing Liu

> Software Engineer at Snowflake

Location: San Mateo, California, United States
Profile: https://flows.cv/yutsing

## Work Experience
### Software Engineer @ Snowflake
Jan 2024 – Present | San Mateo, California, United States
SQL team

### Software Engineer II @ Cadence Design Systems
Jan 2023 – Jan 2024 | San Jose, California, United States
- Engaged in a pivotal role within the core performance optimization project, successfully achieving a reduction in memory usage for the simulator procedure through proficient use of C and C++. 
- Played a key part in ensuring the sustained business collaboration with major clients, showcasing a commitment to enhancing efficiency and fostering strong customer relationships.
- Automated routine compiling and building tasks with Shell scripting, leading to reduction in manual workload.
- Helped the performance optimization team to design and implement a web-based analysis dashboard using Flask and Python REST APIs, streamlining performance metric analysis and increasing the decision-making efficiency.

### Software Engineer Intern @ Snowflake
Jan 2023 – Jan 2023 | San Mateo, California, United States
- Contribute effort to the SQL team, which is responsible for core query processing capabilities and leading performances.
- Automated the monitoring process of SQL quality assurance, which saved 159 hours/year of each engineer resource.
- Investigated query minimizer and integrated it into the workflow that increase the monitoring efficiency by up to 69%.
- Created design docs to capture technical requirements and convey complex concepts in a clear and concise manner.
- Utilized algorithms (e.g., divide-and-conquer) and Object-Oriented programming flexibly to solve real-world problems.

### Software Engineer Intern @ Meta
Jan 2022 – Jan 2022 | Bellevue, Washington, United States
1. Built solutions that continuously validate political preferences of 1.96 billion Meta users are not used in Ads targeting.
2. Helped Core Ads team solve the challenge of not supporting a fully self-serving onboarding service and automated the whole process by developing a test platform with React and JavaScript Relay framework to fetch and manage GraphQL data. 10+ product teams (e.g., Facebook, Instagram, and Messenger) benefit from it.
3. Utilized distributed SQL query engine Presto to query trillions of entries from Hive, a data warehouse based on Hadoop, and feed the data into the dashboard which increased the decision-making efficiency for the product teams.
4. Applied data structure Graph to define the relationship between users and events and used algorithms like Depth First Search (DFS) to recursively parse the cascaded information from UI to generate the corresponding Presto query.
5. Implemented CRUD with GraphQL queries over relational database XDB and operated on Petabytes of data.

### Software Engineer Intern @ ByteDance
Jan 2019 – Jan 2020 | Beijing, China
- Develop an anomaly detection system based on metric data (e.g. mem_used, cpu_used, vm_pgfault) from thousands of cloud servers to ensure Elastic Compute Service;
- Launched a real-time root cause analysis algorithm;
- Performed data cleaning, aggregation, and analysis on up to 1.5M time-series data points;
- Designed an automatic thresholds selection mechanism of anomaly alarming;
- Deployed network microservices for QA to detect anomaly and locate root causes on the data platform.

### Back-end Developer @ Jisuanke
Jan 2018 – Jan 2018 | Tianjin, China
1. Released an English e-book web application with audiovisual functions for children with four other team members.
2. Coded the server-side logic with the Django framework and connected the Django application with MariaDB.
3. Built front-end using Vue.js and two-way bindings and single-file components increased the developing speed by 40%.
4. Completed back-end unit test using Django’s unit test to simulate requests, insert test data and verify the output.


## Education
### Master of Science - MS in Computer Science
University of Southern California

### Bachelor of Engineering - BE in Software Engineering
Nankai University


## Contact & Social
- LinkedIn: https://linkedin.com/in/liuyutsing
- Portfolio: https://liuyutsing.com
- Portfolio: https://www.snowflake.com/en/

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Source: https://flows.cv/yutsing
JSON Resume: https://flows.cv/yutsing/resume.json
Last updated: 2026-03-29