Fei Liu

Senior Software Engineer

Kenmore, Washington, United States7 yrs 3 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Pioneered AI-native development solutions at Amazon.
Led cross-organizational initiatives driving $322MM in cost optimization.
Invented a tech rationalization ecosystem enhancing engineering productivity.

Stackforce AI infers this person is a SaaS and E-commerce expert with a focus on AI-driven solutions and supply chain optimization.

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Skills

Core Skills

AwsAi-native DevelopmentInventory PlanningBusiness IntegrationE-business Platform Development

Other Skills

GenAILangGraphStrandsDynamoDBOpenSearchchatbotMCP integrationAWS BedrockQuickSightAI-powered natural language queriesDemand ForecastingShipping Costs ComputationVendor EconomicsSimulationA/B Testing

About

Senior SDE and Tech Lead overseeing roadmap, architecture, execution, and operational excellence in Amazon supply chain through large-scale distributed systems, while pioneering agentic solution for engineering productivity and technical debt rationalization, driving measurable business impact through cross-organizational leadership and bottom-up initiatives.

Experience

7 yrs 3 mos

Total Experience

3 yrs 7 mos

Average Tenure

6 yrs 4 mos

Current Experience

Amazon

4 roles

Senior Software Development Engineer

Promoted

Dec 2024 – Present · 1 yr 5 mos

GenAI Innovation & AI-Native Development
Invented VACUUM (Visibility, Analysis, and Clean-Up Utility for Unused Materials), a company-wide GenAI-powered tech rationalization ecosystem serving all engineering teams, delivering through AI-native development with multi-agent architecture using LangGraph and Strands orchestration, to eliminate unused tech resources via chatbot, agent network hub, AWS Bedrock, MCP integration, and shared cloud memory bank with safety-first human oversight.
Built end-to-end Agentic RAG platform using AWS Bedrock, unifying fragmented organizational knowledge from code repositories and documents with event-driven data sync, semantic chunking, vector embedding in OpenSearch, two-stage retrieval with reranking, DynamoDB caching, and MCP integration
Strategic Analytics Platform Transformation
Modernized Supply Chain Vendor Analytics, inventing QuickSight embedding pattern with Amazon Q Business delivering end-to-end solution with anonymous mode authentication, row-level security, in-memory data retrieval and ingestion and AI-powered natural language queries

AWSAI-Native DevelopmentGenAILangGraphStrandsDynamoDB+1

Software Development Engineer II

Promoted

Dec 2021 – Nov 2024 · 2 yrs 11 mos

Hybrid Inventory Planning System with Multi Fulfillment Channel Integration
Bridged segregated inventory planning model where Direct Fulfillment (dropship) operated independently from Amazon fulfillment network causing suboptimal inventory decisions across two distinct business models, missed cost optimization opportunities totaling $322MM annually, and inefficient fulfillment network operations
Architected business integration pattern of retail buying model with dropship network awareness across demand forecasting, shipping costs computation, vendor economics and inventory feed and decoration, implementing guardrails with category selection, validated through simulation and A/B testing with managed roll-out mechanism, delivered through 20-month initiative coordinating distributed team of 6 engineers across 10+ cross-domain teams.

Demand ForecastingShipping Costs ComputationVendor EconomicsSimulationA/B TestingInventory Planning+1

Software Development Engineer

Feb 2020 – Nov 2021 · 1 yr 9 mos

Software Engineer Intern

May 2019 – Aug 2019 · 3 mos · Greater Seattle Area

Shandong wuyun technology co. ltd

Co-Founder

Mar 2017 – Feb 2018 · 11 mos · Jinan, Shandong, China

Launched a new C2C e-business platform based on an original model of bidding transaction with a core feature of “Paid Exit”: everyone participating in bidding can gain profits.
Collaborated in the development of Android APP of TouMaiNet platform
Led the product design of TouMaiNet platform (http://www.toumai.wang/)

Android DevelopmentProduct DesignE-business Platform Development