FUll Stack & AI dev from Microsoft

Fan Yi

FUll Stack & AI dev from Microsoft

Available to hire

FUll Stack & AI dev from Microsoft

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Senior Full Stack & AI Engineer at Microsoft
January 1, 2023 - Present
Architected and led production Agentic MCP in Python to orchestrate tools, handle API calls, perform secure database operations, and support advanced RAG features (HyDE, Query Decomposition, Weighted Transformation, Text-to-SQL), serving 50k+ daily agent interactions at 200ms P95 latency with 99.99% uptime. Enabled autonomous multi-step reasoning and tool orchestration for workflow automation. Improved search performance by 80% via query tuning and API optimizations. Directed LoRA fine-tuning pipelines (Azure Foundry, PyTorch, ONNX) and deployed scalable AI models. Implemented FastAPI services with Azure SQL, MongoDB, Redis caching; integrated Kafka for event-driven communication. Established AKS with Terraform and GitOps. Delivered full-stack observability (Prometheus, OpenTelemetry, Jaeger) and testing culture (pytest, Playwright, chaos).
Full Stack Developer at Microsoft
November 1, 2021 - January 1, 2023
Implemented ReactJS and Redux to create scalable front-end components; contributed to testing strategies (Jasmine, Karma, Protractor) and End-to-End validation; migrated RESTful APIs and integrated Spring Security for production-grade back-end services; built data visualization and monitoring dashboards; contributed to front-end architecture and performance improvements.
Backend Engineer II at Rally Health
June 1, 2019 - November 1, 2021
Refined Proton CLI tool to accelerate service creation and updates, achieving higher developer velocity. Built Archimedes dependency tracker to reduce build failures and improve stability. Enhanced back-end systems with async programming, increasing concurrency and overall performance by 3.5x. Built advanced dashboards in React/Angular to visualize product analytics. Engineered an ASP.NET backend for real-time monitoring, reducing investigation time by 60%. Integrated AWS S3/Lambda/Aurora, SaltStack, Kubernetes, and CI/CD pipelines for scalable deployments.
Full Stack Developer at Infosol Inc
September 1, 2017 - May 1, 2019
Created RESTful API endpoints using Node.js and ASP.NET; implemented data visualizations with Angular/React; transformed SAP BusinessObjects reports into consumable APIs; developed dashboards and BI dashboards for clients; integrated OKTA/Auth0 for authentication in client projects.

Education

Master's Degree in Information Science at University of Pittsburgh
June 1, 2017 - May 1, 2019
Bachelor's Degree in Computer Science at Xidian University
June 1, 2013 - May 1, 2017

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Professional Services