Open to opportunities

Sam Koehn

@samkoehn

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Senior full-stack software engineer driving architecture, migrations, and delivery.

United States

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What I'm looking for

I seek senior engineering roles where I can lead architecture and migrations, build full-stack systems, mentor teams, and deliver measurable operational improvements.

I am a results-focused senior full-stack software engineer with deep experience designing and delivering scalable web platforms, CMS and CRM systems, API-driven services, and cross-team migrations. I lead architecture, implement full-stack solutions (React, MaterialUI, Node/NestJS), and improve maintainability through refactors and technical conventions.

I have a track record of driving system migrations, rebuilding products to eliminate vendor dependence, integrating platform features like mobile wallet support, and mentoring engineers while participating in hiring. My background in analytics and automation helps me deliver measurable efficiency gains and reliable deployments.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

RVO Health

May 2022 - Present (3 years 7 months)

Designed and implemented a new CMS microservice and led migration to NestJS, rebuilt Optum Perks Blog to self-hosting, and developed a new CRM site while owning mobile wallet integration and deployment automation.

NodeJS NestJS TypeScript API Design Mobile Wallet (Apple Google)CI CD DevOps

Software Engineer

Optum

Sep 2019 - May 2022 (2 years 8 months)

Maintained legacy AARP discount site and led migration into a monorepo while modernizing front-end with TypeScript components and migrating analytics to Adobe Analytics.

PHP WordPress TypeScript JavaScript Adobe Analytics Repository Reorganization

Data Governance Analyst

Optum

Aug 2018 - Sep 2019 (1 year 1 month)

Built automations reducing file verification from 2 hours to 10 minutes, implemented market mapping fixes restoring millions in analytics, and created Access SQL/Power BI reports to cut reporting time from days to hours.

SQL Power BI Data Automation Data Governance Process Improvement Reporting Agile

Claims Quality Developer

UnitedHealth Group

Mar 2015 - Aug 2018 (3 years 5 months)

Developed real-time Error Proofing and claims reporting tools in JavaScript and built a data migration utility that reduced a day-long manual process to a single button press.

JavaScript Automation Data Migration SharePoint MS Access Reporting