Senior Software Engineer

Company Overview

Health Mark Group is a leading provider of health IT solutions for healthcare providers across the country. By leveraging technology to reimagine the business of healthcare, Health Mark transforms administrative processes into seamless digital solutions. From Health Mark’s proprietary Med Release platform for Release of Information, the company is pioneering an efficient, compliant, and patient‑centric approach to support the entire spectrum of the patient information journey.

Health Mark Group, founded in 2006 and headquartered in Dallas, Texas, has been recognized by the Dallas 100 and Inc. 5000 for multiple years as one of the fastest‑growing companies in the region and nationwide.

We are a mid sized company in a transformation phase: modernizing legacy systems, building new products, and automating workflows that used to require rooms full of people. If you want to build things that matter (not just maintain them), this is a good time to join.

We are hiring a Senior Software Engineer to help design, build, and evolve our Interoperability platform, the systems responsible for securely retrieving patient records from EHRs and external healthcare systems using FHIR based APIs and related interoperability standards.

This role is central to supporting Health Mark’s Release of Information (ROI) services. You will work on services that locate, retrieve, normalize, and deliver patient data at scale, ensuring reliability, auditability, and compliance in a complex healthcare ecosystem.

You will work across modern services and legacy integrations, collaborating with a small, highly engaged team in a fully remote environment. This is not a role where you are handling detailed specs and told to execute—we are looking for someone who can reason through ambiguous interoperability problems, propose pragmatic solutions, and take them all the way to production.

You will have meaningful influence over architecture and technical direction, particularly as we expand our FHIR footprint and modernize how patient data flows through our platform.

AI tools are part of how we build software here. We use AI assisted development daily—not as a novelty, but as a core part of our engineering workflow. We are looking for someone who already works this way and wants to push further.

• Design, build, and maintain backend services and APIs that retrieve and process patient records from EHRs and health systems using FHIR (R4) and related interoperability standards.
• Build and evolve interoperability workflows that support Release of Information (ROI) use cases, including patient identity matching, record discovery, data retrieval, and downstream delivery.
• Integrate with external healthcare systems, EHR vendors, and health information networks using FHIR, RESTful APIs, and event‑driven patterns.
• Work across modern .NET services and existing platforms, modernizing legacy integrations where appropriate.
• Own technical roadmaps for interoperability components—balancing reliability, scalability, compliance, and delivery speed.
• Use AI coding tools daily to accelerate development—generating code, debugging, refactoring, and navigating unfamiliar healthcare focused codebases.
• Review AI generated output with the same rigor applied to any production code—understanding what it produces, not just accepting it.
• Write clean, testable, well documented code with a strong emphasis on observability and operational readiness.
• Lead code reviews and help maintain engineering standards across backend services and integrations.
• Debug and resolve issues across distributed systems, including third party integrations and external dependencies.
• Collaborate with product, operations, and compliance teams to translate healthcare and ROI requirements into technical solutions.
• Identify risks related to data quality, external system dependencies, and interoperability constraints before they become incidents.
• Mentor other engineers, particularly around healthcare integrations and backend service design.

• 6+ years of professional software development experience, with growth in the…