Director of Software Engineering

Jun Wang

I'm a software engineering leader in the Twin Cities. I currently lead technical architecture at Optum Behavioral Health — the shared platform that 180+ applications run on, serving more than six million members. Before that I ran engineering teams at Amazon and CVS Health. I've been writing code for over twenty years, and I still enjoy it.

Eden Prairie, MNjunwang01@gmail.comlinkedin.com/in/junwang03github.com/edenprairie

Director of Software Engineering

Oct 2022 — Present
Optum · Behavioral Health

I lead the technical architecture team for Optum's behavioral health division. My team owns the shared API layer that carries 180+ web applications, thirty of them critical.

I work with the CTO office on engineering maturity, and I'm driving a generative-AI program in utilization management — applying large language models to help review clinical decisions.

Software Development Manager

Mar 2021 — Oct 2022
Amazon · Buy with Prime

I ran a two-pizza team on Buy with Prime, Amazon's merchant checkout product. We shipped changes that touched shopper and merchant discovery, working across several teams inside the program.

The scale was enormous — which is exactly why you learn to keep things simple.

Senior Manager

Nov 2013 — Mar 2021
CVS Health · PBM Systems

I managed five scrum teams — about thirty engineers across five locations — building medical and pharmacy benefit systems.

The work I'm proudest of: an oncology prior-authorization system with a machine-learning recommendation engine that cut review time from two weeks to minutes, and a claims system that saved clients over eight million dollars a year.

Senior Technical Architect

May 2003 — Nov 2013
Bluestem Brands

Designed enterprise integrations — BizTalk, SSIS, .NET services and Web APIs — including a custom eConnect adapter for Microsoft Great Plains transactions.

Software Developer · Software Engineer

Apr 2001 — May 2003
Boombuy Inc. · AMAX Engineering

Built B2B and B2C web applications with ASP, XML/XSLT, SQL Server, and Commerce Server — full-text search, SSL, and everything around it.

6M+
members supported at Optum Behavioral Health
180+
web applications on the shared API platform
30
critical (P1/P2) systems under my team
$8M/yr
client savings delivered on claims at CVS Health

Oncology prior authorization

CVS Health

A regimen-based authorization system with a machine-learning recommendation engine for oncologists. Cut prior-authorization processing from two weeks to minutes.

Medical claims & rebates (EDI 837)

CVS Health

Rebuilt the claims and rebate pipeline — saved clients more than eight million dollars a year.

Claim editing to Azure

CVS Health

Migrated the medical claim editing system to Azure with Docker — a modernization that retired a datacenter dependency.

TnT — Tool n’ Tool

Open source

A playground project I built with friends to try new things: Spring Boot, Gradle, Neo4J, Docker, Ionic 2, and a CI pipeline to hold it together.

Open-source contributions

github.com/edenprairie

Thirty-plus repositories contributed to over the years — including work preserved in the GitHub Arctic Code Vault.

AI / Machine Learning
Generative AILLM & RAGAzure OpenAIPrompt Engineering
Cloud & Platform
AzureAWSKubernetesTerraformDocker
APIs & Services
RESTgRPCGraphQLMicroservicesAPI gateways
Data
MSSQLPostgreSQLMySQLMongoDBElasticsearchKafka
Languages
C# / .NETJavaSpring BootPythonTypeScriptJavaScriptReact
Engineering practices
DevSecOpsCI/CDGitHub ActionsAzure DevOpsTest automation

Master's in Software Engineering (in progress)

University of St. Thomas

Bachelor's in Electrical and Electronics

North China Electric Power University

For two years I taught a weekly natural-language-processing class to middle and high school students.

I founded a non-profit that promotes STEM to young people.

I'm an active volunteer in my local community and helped start a local ethnic group.