Open to opportunities

Yidong Sun

@pro-dev-yidongsun

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Senior software engineer specializing in scalable distributed systems, cloud architecture, and full-stack development.

United States

Message

What I'm looking for

I seek impactful engineering roles building scalable, cloud-native systems, mentoring teams, and delivering secure, high-availability solutions with opportunities for technical leadership.

I am a Senior Software Engineer with deep experience architecting and scaling distributed systems for high-traffic platforms, cloud-native services, and healthcare integrations. I have led migrations from monoliths to microservices, optimized performance across databases and caches, and implemented secure, compliant systems using OAuth 2.0, JWT, and IAM.

I mentor engineering teams in Domain-Driven Design and TDD, automate CI/CD and IaC with Jenkins and Terraform, and collaborate with data science to deploy low-latency ML models. My background spans Java, Python, Go, AWS, serverless patterns, and healthcare messaging (HL7), delivering measurable improvements in availability, latency, and cost.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Amazon

Sep 2017 - Present (8 years 5 months)

Architected and scaled distributed e-commerce systems handling 3M+ transactions per minute; led migration from monolith to microservices achieving 99.9% availability and independent scalability for payment services.

Java Spring Boot Python Serverless Terraform CI CD Distributed Systems Microservices

Full Stack Engineer

HCA Healthcare

Jul 2012 - Aug 2017 (5 years 1 month)

Developed MyHealthONE portal features and migrated legacy clinical pages to SPA architecture, implementing HL7 integrations and middleware to ensure 100% patient data consistency.

HL7 Rhapsody JavaScript SPA SQL Middleware RESTful APIs