AXAndrew Hanlin Xu
@andrewhanlinxu
Senior software engineer building HIPAA-compliant, cloud-native healthcare platforms on AWS.
United StatesWhat I'm looking for
I’m a Senior Software Engineer with 10 years’ experience at Amazon, delivering scalable, HIPAA-compliant healthcare systems on AWS for telehealth, AI-driven patient workflows, and real-time care coordination.
I led end-to-end development of distributed platforms integrating EHR (1Life) event-driven architectures and AI/ML services, improving patient engagement by 15% and reducing scheduling conflicts by 30%.
In my most recent role, I redesigned secure telehealth capabilities—real-time video consultations and asynchronous patient messaging—using Amazon Connect, WebRTC, and AWS API Gateway, and integrated AI-driven patient insights via Amazon Bedrock / HealthScribe.
I also built unified appointment management across virtual and in-person care using FHIR-based APIs, plus compliant billing workflows with Step Functions, Lambda, and API Gateway. I prioritize secure, observable systems—OAuth2/OIDC, AWS IAM/Cognito, CloudTrail audit logging, and KMS encryption—while mentoring engineers to deliver dependable healthcare software.
Experience
Work history, roles, and key accomplishments
AMLed redevelopment of secure telehealth capabilities (real-time video and asynchronous messaging) and integrated AI-driven patient insights, increasing patient engagement by 15%. Built appointment management and billing workflows to reduce scheduling conflicts by 30% and ensure PCI/HIPAA-compliant processing.
AMDeveloped patient-facing appointment booking, secure messaging, and care coordination features, improving engagement and reducing friction in accessing care. Built and optimized backend APIs and data workflows integrating the 1Life EHR (FHIR), including async processing that improved reliability and reduced deployment downtime by 40%.
AMAssisted in building patient-facing appointment booking and messaging features, and supported backend APIs for authentication, appointments, and messaging workflows. Helped implement FHIR-based integrations, async notifications via AWS Lambda/SQS, and data updates using MySQL/PostgreSQL to improve accuracy and performance.
Education
Degrees, certifications, and relevant coursework
UIUniversity of Illinois
Bachelor of Science, Computer Engineering
2012 - 2016
Earned a Bachelor of Science in Computer Engineering at the University of Illinois from 2012 to 2016.
Tech stack
Software and tools used professionally
AWS Glue
Amazon Connect
AWS IAM
AWS Step Functions
GitHub
Kubernetes
AWS CodePipeline
GitHub Actions
React Native
NumPy
Pandas
MySQL
PostgreSQL
MongoDB
Cassandra
Gmail
Node.js
Django
Laravel
Spring Boot
Next.js
NestJS
Tailwind CSS
Material-UI
Azure DevOps
Vue.js
JavaScript
Java
PHP
Amazon SQS
FastAPI
Amazon DynamoDB
Apollo
GraphQL
AWS Lambda
Amazon Aurora
Vercel
OAuth2
WebRTC
SQL
Enhance
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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