Senior FHIR Backend Developer

Who we are:
Tria Federal delivers digital services and technology solutions that support the health and safety of veterans, service members and civilians. For two decades, federal agencies have relied on Tria companies to advance their critical missions and modernize their systems, so that they can uphold their commitment to the American people. Today, we are pushing the boundaries of possibility through partnerships and investments in artificial intelligence and emerging technologies, developing solutions for the biggest challenges that government will face tomorrow.
We are proud to employ and support military veterans who bring mission-first mindset, technical expertise, and leadership qualities that strengthen our work. Veterans, transitioning service members, and military spouses are strongly encouraged to apply.
Job Description:
We are seeking a Senior FHIR Backend Developer to design, build, and maintain the FHIR-based APIs that power CMS's FHIR initiatives. This is a hands-on engineering role focused on implementing standards-based healthcare data exchange, with primary responsibility for the services that submit and process the DEQM Summary MeasureReport profile.
The ideal candidate is a strong backend engineer who has already implemented FHIR R4 resources, profiles, and APIs in production, and who is comfortable working inside CMS implementation guides (IGs) and conformance requirements. This role works closely with the project's Technical Lead and architecture decisions, turning profile and IG requirements into secure, well-tested, production-grade code.
Basic Requirements:
Ability to successfully obtain a U.S. Federal Position of Trust clearance designation.
Must reside in and be able to perform work in the United States.
Must have lived in the United States for 3 of the last 5 years.
A bachelor's degree is required, preferably in computer science, software engineering, information systems, or a related field (equivalent experience considered).
8+ years of backend software engineering experience, including building and maintaining production REST APIs.
3+ years of hands-on experience implementing HL7 FHIR (R4 preferred) resources, profiles, extensions, and RESTful FHIR APIs.
Experience building or extending a FHIR server (e.g., HAPI FHIR) or FHIR client integrations in a production environment.
Experience implementing API security patterns such as SMART on FHIR, SMART Backend Services, and OAuth 2.0.
Strong written and verbal communication skills, including the ability to document technical designs and decisions clearly.
Additional Qualifications:
HL7 FHIR Foundational Implementer certification strongly preferred; candidates actively pursuing it will also be considered. HL7 FHIR Advanced Developer or Advanced Architect certification is a nice-to-have.
Experience implementing or consuming Da Vinci Digital Quality Measures (DEQM), the Quality Measure IG, CRMI, or QI-Core.
Familiarity with CQL (Clinical Quality Language) as used in digital quality measure logic.
Experience with FHIR Bulk Data export/import and large-scale healthcare data processing.