Open to opportunities

Justin Wang

@justinwang2

Message

Senior AI/ML engineer delivering reliable, production-grade LLM and ML systems.

United States

Message

What I'm looking for

I seek roles building production AI/ML systems with emphasis on safety, reliability, observability, and cross-functional collaboration.

I am a Senior Software Engineer specializing in AI/ML with over a decade of experience building production systems from classical ML to LLM-based agents.

At Amazon, I led engineering for an AI-driven Campaign Management Agent, building the UI integration, AI orchestration layer, and stateful agent execution to improve reliability and enable safe automation.

Previously at Oscar Health, I developed production ML systems for claims triage, care routing, and NLP pipelines, implementing end-to-end batch pipelines, monitoring, and explainability to ensure compliance and operational efficiency.

I focus on end-to-end AI orchestration, safety guardrails, human-in-the-loop workflows, and operationalization—delivering scalable, observable systems that combine LLMs, model services, and data-driven decision signals.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Amazon

Nov 2020 - Present (5 years 3 months)

Contributed to productionizing an AI-driven Campaign Management Agent for Amazon Ads, improving answer accuracy by 30% and enhancing multi-turn reliability while adding guardrails and human-in-the-loop approval workflows.

Python TypeScript React RAG Redis Kubernetes gRPC CI CD

Software Engineer

Oscar Health

Jun 2015 - Sep 2020 (5 years 3 months)

Built and deployed production ML systems for claims triage and care routing, delivering predictive risk models and NLP pipelines that improved operational efficiency and automation accuracy.