Open to opportunities

Justin Yang

@justinyang2

Message

Senior software engineer specializing in cloud-scale telehealth and eCommerce platforms.

United States

Message

What I'm looking for

I seek challenging roles building cloud-native, secure, scalable systems where I can lead architecture, mentor teams, and improve reliability and user outcomes.

I am a Senior Software Engineer with 10+ years building large-scale, mission-critical platforms across telehealth, eCommerce, and cloud-native systems. I design and deliver end-to-end features, shape distributed architectures, and drive resilient, secure systems.

At Amazon I led design and implementation of a HIPAA-aligned telehealth platform using Java/Spring Boot microservices on AWS, integrating React frontends, WebRTC video, Stripe payments, and event-driven processing for reliable clinical workflows. I prototype AI-driven routing in Python and operationalize models in production services.

I mentor teams, run cross-functional design efforts with product and clinical stakeholders, improve observability and SLOs with DataDog/CloudWatch, and continuously optimize performance through A/B testing and system tuning to raise engineering standards and delivery velocity.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Amazon

Jun 2020 - Present (5 years 6 months)

Designed and delivered Amazon's telehealth platform using Java/Spring Boot microservices on AWS, building secure patient workflows, video visits, and payment integrations while improving reliability and compliance.

Java Spring Boot AWS Terraform React REST APIs WebRTC DynamoDB

Software Engineer

Walmart

Jun 2015 - May 2020 (4 years 11 months)

Built large-scale eCommerce features with Java/Spring Boot and React, improved search and personalization using Elasticsearch and ML prototypes, and engineered real-time pipelines for order and inventory updates.