# Junda Lou

> Senior Software Engineer at Google

Location: Irvine, California, United States
Profile: https://flows.cv/junda

Backend-focused Software Engineer who creates great user-facing products and infrastructures. Experienced with building LLM-powered tools and pipelines. Excels at LLM, Java, Python, Trino, AWS, Google technologies, Jenkins, learning new technologies and combining them with the current knowledge base. Also experienced with React, JavaScript, HTML, and CSS in building frontend products.

## Work Experience
### Senior Software Engineer @ Google
Jan 2022 – Present | Irvine, California, United States
• Built a RAG-powered Chatbot for Google Sellers to quickly lookup both internal and external knowledge base.
• Designed and developed an automatic data serving pipeline as a centralized gateway to serve critical business data across Google PAs as views and materialized views.
• Designed and developed a Semantic Cache with vector embeddings for LLM requests.
• Designed and developed a pipeline to extract snippets from documents using LLMs, as well as implemented a semantic retrieval engine for a user-facing chat bot.

### Software Engineer - Data Infrastructure @ TuSimple
Jan 2021 – Jan 2022 | San Diego, California, United States
● Designed and developed a benchmark framework for Trino to evaluate its performance in terms of metrics,
comparison with underlying storage sources, and comparison with AWS Athena.
● Utilized pyspark to inject benchmark result metrics to TuSimple Data Lake on AWS S3 in Parquet format.
● Configured an AWS Glue crawler to crawl S3 benchmark metrics, and update the corresponding Hive table.
● Integrated Looker as a dashboard to visualize benchmark metrics for business intelligence and analytics.
● Supported other teams to onboard our consumption pipeline of storage (Hive, PostgreSQL, MongoDB), query
engine (Trino), and dashboard (Looker).
● Utilized pytest-benchmark and google/benchmark as the Benchmark frameworks

### Software Engineer - Platform Infrastructure @ Intuit
Jan 2020 – Jan 2020 | Mountain View, California, United States
● Designed and developed a Python CLI tool to identify system resource wastage in Kubernetes Pods and AWS
EC2 instances, and proposed actions to reduce wastages.
● Collected data from Prometheus, Wavefront, and IKSM using API Clients and RESTful APIs.
● Integrated Google Sheet using Google APIs to generate online report sheets with shareable links.
● Implemented calculation algorithms to convert wastage into numeric cost.
● Applied Bin-Packing Algorithm in estimating number of saved AWS nodes and budget.
● Integrated new Java SpringMVC to resolve Java Bottleneck by saving 60% on CPU and 70% on Memory.
● Saved an average annual cost of around $1M across 200+ AWS Kubernetes clusters.

### Software Engineer - Full Stack @ DecorMatters
Jan 2018 – Jan 2019 | Milpitas, California, United States
● Designed and developed a dashboard for DecorMatters and business partners to visualize statistics of products.
● Utilized React and Ant Design library to implement a single-page responsive dashboard with user-friendly modern UI designs.
● Used BizCharts as a data visualization tool to create intuitive graphs on statistics.
● Used NoSQL database (MongoDB) to manage account, product, and statistics data.
● Created an admin dashboard for administrators to CRUD on the database without query commands.
● Implemented checkers and converters to validate CSV and JSON files.
● Created a Node.js backend server to handle HTTP requests and responses.


## Education
### Master of Science - MS in Computer Science
California State Polytechnic University-Pomona


## Contact & Social
- LinkedIn: https://linkedin.com/in/junda-lou-402453133

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Source: https://flows.cv/junda
JSON Resume: https://flows.cv/junda/resume.json
Last updated: 2026-03-30