Shengwei Mao
Software Engineer creating scalable solutions with distributed caching
- Role
- Software Engineer at Walmart Global Tech
- Location
- Sunnyvale, CA, US
- LinkedIn followers
- 500 followers
About Shengwei Mao
As a Software Engineer at Walmart Global Tech, I specialize in architecting and…
Experience
Software Engineer
Jan 2024 — Present · Sunnyvale, CA, US
Walmart Catalog Indexing & RAG-Enhanced Search Architected and developed high-performance data indexing and retrieval systems for Walmart\'s e-commerce platform, implementing RAG-powered intelligent search capabilities for real-time production workloads- Engineered Java Spring Boot REST APIs for product ingestion and enrichment, enabling retrieval-augmented search applications- Implemented semantic product recommendations via Elasticsearch dense vector similarity search, improving search relevance by 35%- Designed retrieval pipelines leveraging contextual embeddings and similarity matching to enhance product discovery and customer experience- Deployed microservices on Kubernetes, ensuring scalability, fault tolerance, and high availability for RAG-powered workloads- Optimized indexing throughput and reduced pipeline latency by 40% through parallel processing and adaptive batching strategies- Integrated Redis caching for high-frequency product embeddings and search results, cutting response time- Developed responsive React (TypeScript, HTML5, CSS3) web applications, including a member portal for personalized recommendations and membership management, as well as dashboards for real-time search analytics and performance monitoring.
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