Open to opportunities

Jonathan Nolen

@jonathannolen

Message

Senior full-stack engineer building scalable, HIPAA-compliant healthcare platforms.

United States

Message

What I'm looking for

I want to join a mission-driven team building secure, scalable healthcare or enterprise SaaS systems where I can lead architecture, mentor engineers, and improve reliability and observability.

I am a Senior Full-Stack Engineer with over a decade of experience delivering enterprise healthcare and SaaS platforms using C#, Java, and Kotlin backends, and modern front-end frameworks like React, Angular, Vue, Next.js, and Svelte. I specialize in building scalable microservices, HIPAA-compliant systems, FHIR integrations, and cloud-native architectures across AWS, GCP, and Azure, driving measurable improvements in uptime, latency, and security.

Throughout my career I have architected and deployed mission-critical systems processing large-scale healthcare and transactional workloads, reduced clinician documentation time, improved authentication and PHI protection, and implemented observability and CI/CD practices that significantly cut incident detection and release downtime. I seek to bring technical leadership, pragmatic engineering, and cross-team mentorship to organizations focused on secure, high-availability healthcare or enterprise SaaS solutions.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

UnitedHealth Group

Nov 2024 - Present (1 year 3 months)

Architected .NET Core and Spring Boot microservices processing FHIR R4 healthcare data for an Optum platform serving 50 million members, improving uptime to 99.9% and reducing unauthorized PHI access incidents by 45%.

C++.NET Core Spring Boot FHIR AWS Kubernetes GraphQL Auth0

Senior Software Engineer

IncWorx Consulting

May 2023 - Oct 2024 (1 year 5 months)

Led development of Angular, Vue and C# .NET Core microservices for Microsoft Power Platform and Dynamics 365 clients, improving deployment frequency by 45% and reducing infrastructure overhead by 32%.

Angular Vue.Js C++.NET Core Azure Docker Kubernetes CI CD Redis

Software Engineer

Olo

Jan 2019 - Apr 2023 (4 years 3 months)

Developed Vue.js/React frontends and C#/.NET Core and Java microservices for the Olo Order platform supporting 89,000 locations, migrated to event-driven architecture and achieved 99.9% uptime.

Vue.Js React C++.NET Core Java Spring Boot Kafka AWS Elasticsearch

Full Stack Developer

Inoxoft

Aug 2015 - Dec 2018 (3 years 4 months)

Built React and Angular frontends with C# and Java backends for aviation and logistics applications, improving load times and supporting thousands of concurrent users with sub-100ms messaging latency.