# Rainy L.

> Sr Gen-AI ML Engineer / Data Platform Engineer Lead/BI Lead on DeepDev; Business insights and Machine Learning, Data Science and Cloud Data Warehouse Developer and Analytics, Quant scientist driven by data, MBA, CFA

Location: Mountain View, California, United States
Profile: https://flows.cv/rainy

Senior platform AI/ML engineer / Data Platform and Data Warehouse Engineer lead, GenAI model developer in Business Intelligence , CFA institution challenge member, MBA and international and domestic experienced quantitative analyst with strong analytical and problem-solving skills in different industries. Good at Fine tuning models and RAG picking up for finding business insights in different ways by using statistical models to analyze large sets of data with different programming languages such as Python, Node.js, GO , SQL and R. Good at building ML model to analyze business problem and finding out significance on different solutions. Good at telling back story to stockholders through virtualizing data by using Power BI tools, such as Tableau, Looker and Domo. Having experience on querying joint internal data creating cloud function and analytics in cloud computing (AWS, GCP, Azure, Pivotal Cloud Foundry) and proficient in preparing Business and System Use Cases and supporting all the documents with UML diagrams such as Use Case Diagrams, activity Diagrams, Data Flow Diagrams, Sequence Diagrams, Process Flows using UML modeling tools such as MS Visio. Having extensive knowledge of Agile Scrum, Rational Unified Process (RUP), Waterfall Methodologies with expertise working with tools, such as Rational Requisite Pro, Microsoft Office Suite and HP/ALM Quality Center. Have extensive experience in developing Business Requirements Document (BRD), Functional Requirements Document (FRD), User Stories, Use Cases, Test Cases, Test Plans.

Once developed new programs in a company which was listed in the Fortune 500 as a project manager. Solved company extension problems as an investment analyst. In the past 7 years, successfully performed Equity Research, SAAS Platform Analysis, Cloud database development, Risk Assessment and Management Functions, Business Analysis, Statistics Data Engineer and Business Intelligence Engineer.

## Work Experience
### Engineer - Gen-AI / ML Data Platform @ Circle
Jan 2024 – Present

### Engineer Lead / Sr Machine Learning Data Platform Engineer @ Dynatrace
Jan 2021 – Jan 2024

### Data Platform Engineer (Cloud Computing: AWS GCP) @ Datadog
Jan 2018 – Jan 2021 | Boston, Massachusetts

### Intelligence Engineer -Netsuit @ CarGurus
Jan 2016 – Jan 2018

### Data Platform Software Engineer @ Google
Jan 2013 – Jan 2016 | London, United Kingdom


## Education
### MIT School of Engineering

### Master's degree
Bangor University

### Bachelor's degree
Northwestern Polytechnical University

### Master's degree
University of Cambridge


## Contact & Social
- LinkedIn: https://linkedin.com/in/ruoyingli

---
Source: https://flows.cv/rainy
JSON Resume: https://flows.cv/rainy/resume.json
Last updated: 2026-04-11