Senior Full Stack Engineer

Role: Senior software engineer
Type: Full-time (No C2C)
Location: 100% remote within the USA
Exp: 10+ years
Senior IC · Full stack (.NET + React)· Est. base
Hands-on full-stack senior engineers who turn prioritized business use cases into workingsoftware — front end and back end — from requirements discovery and design through QA, deployment, and production support, all within WelbeHealth's architecture standards and Agile DevOps lifecycle. A core part of the mandate is re-engineering custom legacy applications on the Microsoft stack and weaving AI capabilities into what we build.
What they'lldo
Work acrossthe full stack — React front ends and C#/.NETback-end services — to develop,deploy, and maintain solution components
Re-write and re-engineer customlegacy applications on the Microsoft tech stack
Bring AI into the product — integrate LLM-powered features and use AI-assisted engineering to raise velocity and quality
Apply strongDevSecOps principles, buildingsecurity and data integrity alignedto HIPAA and PCI into the pipeline
Own qualityend to end: automated unit, system, and regression testing(NUnit), peer code anddesign reviews, and independent verification of peers' components
Support production through monitoring, performance optimization, troubleshooting, and DevOps-managed deployments
Must-haves
10+ yearsof object-oriented development with C#, .NET Core, and Razor Pages
Full-stack capability — React.js front ends paired with .NET back-end services
Azure depth: API Apps, Logic Apps, Functions, REST services, and Azure Cosmos DB (NoSQL)
Automated unit, system,and regression testingwith NUnit
Strong engineering DevSecOps principles
Experience designing REST APIs and solutions that span multipledata sources
Bachelor's in computer scienceor mathematics, or equivalent experience (Microsoft solutions certifications preferred)
Nice to have: Azure Data Factory and structured releasemanagement experience
The right fit: engineers who write clean,maintainable, well-documented code, ask what problem this solves for participants, and treat AI tooling as a standard part of the kit.

Work arrangement
No