Senior Dotnet Developer

The healthcare industry is the next great frontier of opportunity for software development, and Health Catalyst is one of the most dynamic and influential companies in this space. We are working on solving national-level healthcare problems, and this is your chance to improve the lives of millions of people, including your family and friends. Health Catalyst is a fast-growing company that values smart, hardworking, and humble individuals. Each product team is a small, mission-critical team focused on developing innovative tools to support Catalyst’s mission to improve healthcare performance, cost, and quality.

Health Catalyst is expanding and maintains a large suite of Improvement Apps that contribute to healthcare analytics and process improvement solutions. This includes products that manage the care of health system populations, better serve patients at the point of care, reduce health system costs, and reduce clinician workload.

Job Summary:

As a senior Full stack Dot Net Developer you will be working with diverse Improvement Apps, software engineering team designing, developing, and maintaining various platforms that serve internal HCAT team members, clinicians, and patients. You will rely on Test-Driven Development to safely enhance and refactor our system, shipping production code multiple times per week. And you will go to bed each night with the comfort that your code is improving outcomes for patients.

If you love…

Help drive clarity and prototype individual features or problems

Knowledge of architecture patterns and the ability to design and complete features / tasks that are 50-60% well defined.

Can discern where gaps can be filled in without consulting a Product Manager or another programmer and can judge when a consultation is needed.

Work is reviewed with the occasional need for material direction or implementation changes

Seeks and provides guidance via PR reviews, pair-programming and other interactions with Engineers and Product Managers

It is second nature to develop high code quality standards balanced with the needs of real-world customer timelines.

Possesses a passion and drive to deliver exceptional products and follows established patterns and approaches within existing code bases with ease.

Takes ownership of learning and growth

Capitalizes on internal and external opportunities for learning.

Identifies gaps in knowledge/skills and seeks ways to close those gaps (self-guided learning, pairing, seeking guidance for yourself and developing guidance for less experienced members of the team)

Periodic On Call Rotation

Ability to communicate with Customer Success about customer issues that are escalated to Engineering and help quantify customer impact.

Can Respond quickly to operational emergencies, find short term resolutions and plan long term fixes to avoid similar issues in the future.

What you own in the role:

• Develop, and maintain scalable, high-performance web applications using .NET Core / .NET 8 on the backend and React.js on the frontend, applying strong data structures and algorithms knowledge to design efficient, optimized solutions across the stack.
• Design and build distributed microservices architectures using ASP.NET Core, implementing patterns such as API Gateway, Circuit Breaker, Event Sourcing, and CQRS to ensure loose coupling, fault tolerance, and independent deployability of services.
• Develop and expose secure, versioned RESTful and gRPC APIs across microservices, with robust inter-service communication using Azure Service Bus and Azure Event Grid for asynchronous, event-driven workflows.
• Deploy and manage cloud-native microservices on Azure using Azure Kubernetes Service (AKS), Azure Container Registry, and Azure API Management — with a strong emphasis on observability, service mesh, and infrastructure-as-code using Bicep or Terraform.
• Build reusable, performant React component libraries using TypeScript, applying algorithmic thinking to optimize rendering performance, virtual DOM efficiency, and state management using Redux or Zustand at scale.
• Apply strong DS&A fundamentals — including graph traversal, tree structures, dynamic programming, and efficient search/sort algorithms — to solve complex backend processing, data aggregation, and query optimization challenges.
• Design and enforce microservice resilience patterns including retry policies, idempotency, distributed tracing (Azure Monitor, Application Insights), and health checks to ensure system reliability and observability across services.
• Mentor junior and mid-level engineers through architectural design reviews, algorithm problem-solving sessions, and code reviews — building team capability in microservices design, cloud-native development, and engineering best practices.

What you bring to this role:

• Bachelor's degree or equivalent practical experience preferred.
• Strong working knowledge of C#/.Net/ react / Microservices/ DS&A
• Strong working knowledge of CI/CD
• Strong knowledge of and experience with cloud (azure/aws)
• Strong analytical skills with the ability to collect, organize, analyze, and disseminate significant amounts of information with attention to detail and accuracy, in a timely manner
• Adept at constructing efficient queries, writing reports and presenting findings
• Ability to manage multiple and simultaneous responsibilities and to prioritize scheduling of work
• Strong verbal and written communication skills
• 5+ years work experience as an app developer
• BS or MS in Statistics, Mathematics, Economics, Computer Science, Information Management, or a similar field
• An understanding of healthcare data is a plus, but not a requirement

You may also bring:

Experience with cloud infrastructure and architecture patterns, either Azure or AWS preferred.

Software development experience within healthcare IT and understands key data models (clinical, claims, financial, etc.) and interoperability standards such as HL7v2, CDA, EMR, and FHIR

Knowledge of healthcare compliance and how it applies to Application Security

Agile/Scrum software development practices

Business Intelligence or Data warehousing experience

Preferred Experience and Education:

BS/BA or MS in Computer science, information systems, or other technology/science degree.

A minimum of 5 years of experience in building commercial software, SaaS, or digital platforms.

Equal Employment Opportunity has been, and will continue to be, a fundamental principle at Health Catalyst, where employment is based upon personal capabilities and qualification without discrimination or harassment on the basis of race, color, national origin, religion, sex, sexual orientation, gender identity, age, disability, citizenship status, marital status, creed, genetic predisposition or carrier status, sexual orientation or any other characteristic protected by law.. Health Catalyst is committed to a work environment where all individuals are treated with respect and dignity..