Open to opportunities

Joseph Zhang

@josephzhang3

Message

Staff Full Stack AI Engineer building reliable AI-enabled platforms that streamline operations and data workflows.

United States

Message

What I'm looking for

I’m looking to own end-to-end AI product delivery—architecture, implementation, and production reliability—using LLM/RAG workflows to reduce manual work, improve data quality, and give teams dependable, auditable speed.

I’m a Staff Full Stack AI Engineer with 10+ years designing and delivering production AI-enabled platforms, data-heavy web applications, backend services, and cloud systems. I own work from ambiguous business problems through architecture, implementation, rollout, monitoring, and stakeholder communication.

At Esperanto Commerce, I lead modernization of a multi-tenant commerce and analytics platform and an order management + marketplace integration platform. I replaced tightly coupled legacy logic by architecting a modular .NET 8 service layer, reducing average API response time by roughly 35%, while building secure APIs, dashboards, caching/retry strategies, and production support workflows.

I also deliver real-world AI with grounded LLM/RAG systems and operational tooling—using contextual retrieval, structured prompts, embeddings, vector search, and audit-logged investigation workflows. Previously at Quantiphi and Microsoft, I built RAG and semantic search experiences, added quality monitoring with runbooks and validation rules, improved release quality with testing/CI/CD, and mentored engineers on clean boundaries and trustworthy AI/data practices.

Experience

Work history, roles, and key accomplishments

Current

Staff Software Engineer

Current

Esperanto Commerce

Jun 2024 - Present (2 years)

Led modernization of a multi-tenant commerce and analytics platform, owning full-stack delivery from React/TypeScript UI through API services, PostgreSQL data models, and AWS infrastructure. Architected a modular .NET 8 service layer that reduced average API response time by ~35% and implemented secure, versioned endpoints with observability and production support.

React TypeScript .NET 8+PostgreSQL AWS Kafka

Senior Software Engineer

Quantiphi

Jul 2021 - May 2024 (2 years 10 months)

Delivered AI-enabled platforms across UI, backend, and data pipelines, building production RAG and semantic search with grounding and source references. Developed ingestion and orchestration services, annotation/review workflows, and quality monitoring to improve reliability of AI and data outcomes.

React TypeScript

Senior Software Engineer

Microsoft

Apr 2016 - Jun 2021 (5 years 2 months)

Built and maintained production full-stack applications and enterprise services using C#/.NET and React, modernizing APIs, validation, telemetry, and operational tools. Designed AWS serverless workflows and optimized SQL Server performance while improving CI/CD coverage and incident response through monitoring and root-cause analysis.