Open to opportunities

Andrew Chen

@andrewchen2

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Staff Full Stack Engineer delivering scalable, reliable cloud-native systems.

United States

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What I'm looking for

I seek hands-on roles building scalable, compliant cloud platforms with cross-functional teams, strong CI/CD, and opportunities to integrate AI/ML and improve system reliability.

I am a Staff Full Stack Engineer with over 10 years building high-scale products across healthcare, finance, advertising, travel, and video streaming. I design and implement end-to-end solutions — from pixel-perfect React/Next.js frontends to microservice backends (Java, Node.js, Python) — and focus on performance, reliability, and compliance.

I've led cloud-native, event-driven architectures (Kafka, Event Sourcing, CQRS) and HIPAA-compliant healthcare platforms on AWS/GCP, integrated AI/ML (LangChain/OpenAI, SageMaker) for intelligent features, and improved delivery velocity through TDD and automated CI/CD pipelines, reducing deployment time and improving uptime.

Experience

Work history, roles, and key accomplishments

Current

Staff Full Stack Engineer

Current

Optum

Feb 2020 - Present (5 years 9 months)

Contributed to an end-to-end digital healthcare platform, improving performance and reliability with SSR, microservices, and event-driven architecture while maintaining 99.9% uptime and HIPAA/FHIR compliance.

Next.js React TypeScript Python Django Kafka AWS Redis Elasticsearch

Senior Software Engineer

Airbnb

Apr 2017 - Feb 2020 (2 years 10 months)

Migrated booking and payment features to Java microservices, built real-time Kafka flows for fraud detection and pricing, and improved CI/CD and deployment reliability across services.

Java Kafka React Python GraphQL Terraform Kubernetes Prometheus

Software Development Engineer II

Amazon

Sep 2015 - Mar 2017 (1 year 6 months)

Built and scaled adtech systems with Java microservices and real-time pipelines (Kinesis/Lambda), integrated ML models for CTR prediction returning results in <50ms, and automated infrastructure with Terraform/CloudFormation.

Java AWS Kinesis Lambda EC2 Python Terraform Docker Prometheus React

Education

Degrees, certifications, and relevant coursework

University of Houston

Bachelor of Science, Computer Science

2011 - 2015

Bachelor of Computer Science completed at the University of Houston, covering core computer science topics and practical software development from 2011 to 2015.