Justin Patcher User

I’m a Senior Software Engineer with 13+ years of experience specializing in high-scale distributed systems and AI-integrated platforms. At Google, I led end-to-end engineering for Google Pay financial security and YouTube content safety, building high-throughput Java/Python services that reduced fraud losses by 30% and improved moderation accuracy by 50% for billions of users.

I’m known for bridging high-performance backends with data-driven interfaces, especially in GCP and large-scale private cloud environments. At eBay, I directed the backend development of a real-time personalization engine, scaling Node.js and Spark services and increasing cross-sell conversion by 25%—while building streaming ingestion, low-latency RESTful APIs, and stable state management with Redis.

I focus on reliable, observable systems—using Kubernetes/GKE, Terraform, Prometheus, and Grafana—paired with modern AI capabilities like Vertex AI, TensorFlow, and RAG. I also bring a security and compliance mindset (GDPR, HIPAA, SOC 2) and have built risk monitoring, automated pipelines, and AI moderation tooling that scales with global compliance requirements.