Open to opportunities

Joseph User

@josephuser11

Message

Staff Software Engineer specializing in cloud-native, high-performance healthcare and financial systems.

United States

Message

What I'm looking for

I seek roles where I can lead cloud-native architecture and high-performance systems, drive cross-functional impact, mentor teams, and deliver compliant, scalable healthcare or fintech solutions.

I am a Staff Software Engineer with 9+ years building cloud-based, high-performance systems in healthcare and financial analytics. I focus on frontend modernization, resilient backend architectures, and measurable business impact.

At Optum I led design and implementation of a scalable hybrid cloud RCM platform, architecting multi-cloud deployments with Terraform and building modular services in C#, Java, and Node.js. I implemented streaming and batch pipelines with Kafka, Flink, and Airflow to enable near real-time revenue analytics.

I integrated predictive denial risk models via TensorFlow Serving and Python microservices, and embedded AI/NLP to improve documentation review and workflow prioritization while ensuring HL7, FHIR, and ICD-10 compliance. I also built secure REST/GraphQL APIs, SDKs, and sandbox tooling to support financial integrations.

Previously at Amazon I delivered core components of an online pharmacy platform, implemented scalable backend services in Java and Python, optimized schemas in PostgreSQL and DynamoDB, and established CI/CD, observability, and testing practices to ensure reliability and compliance.

Experience

Work history, roles, and key accomplishments

Current

Staff Software Engineer

Current

Optum

Jan 2021 - Present (4 years 11 months)

Led design and implementation of a scalable hybrid-cloud RCM platform, automating claims submission, adjudication, denial workflows and reporting while enabling near real-time revenue analytics and HIPAA-aligned security controls.

Azure AWS Terraform Kubernetes C++Java Kafka React

Software Engineer

Amazon

Jul 2016 - Dec 2020 (4 years 5 months)

Delivered end-to-end online pharmacy platform features, implementing prescription lifecycle services that improved reliability and scalability through idempotent backend workflows and optimized storage schemas.