Senior Healthcare Full Stack Developer

ASSYST is seeking an experienced Senior Healthcare Full Stack Developer with specialized experience in HL7/FHIR, to build secure web applications for our Client in Austin TX (Hybrid role). The Senior Healthcare Full Stack Developer must understand agency business objectives, evaluate complex healthcare data problems, and design technical solutions to modernize and automate data exchange and closely work with cross-functional operational units to analyze requirements, define input/output specifications, and implement secure, scalable healthcare interoperability interfaces. Responsibilities: - Healthcare Interface Development: Design, build, test, troubleshoot, and maintain healthcare integration pipelines and interfaces leveraging HL7 v2 and FHIR standards. - System & Requirements Analysis: Analyze operational workflows, user requirements, and existing system constraints to write detailed functional/technical specifications and system modification plans. - Data Mapping & Transformation: Map, transform, and validate clinical and demographic data across HL7 v2, FHIR resources, and enterprise analytical data models. - FHIR Implementation: Implement FHIR solutions using US Core profiles, Electronic Case Reporting (eICR) Implementation Guides, and other HL7 standards. - Healthcare Interoperability Integration: Integrate and maintain FHIR servers and RESTful FHIR APIs for secure public health data exchange. - Terminology Standardization: Apply standard healthcare vocabularies and code systems, including SNOMED CT, LOINC, ICD-10, CVX, and RxNorm. - Cloud & Platform Integration: Ingest and route healthcare data into cloud environments (AWS), utilizing services such as AWS HealthLake, Snowflake, and enterprise data analytics platforms. - Modern SDLC & Delivery: Maintain source control, automated builds, and CI/CD pipelines using Git, along with unit/integration testing, defect tracking, and comprehensive technical documentation. - Portal & Security Integration: Assist with secure web portals or portal-integrated services, applying role-based access control (RBAC), secure coding practices, and standard authentication/authorization protocols. Qualifications & Skill Requirements - 8+ years in hands-on experience designing, developing, testing, and supporting healthcare interfaces utilizing HL7 v2 and HL7 FHIR standards REST APIs, JSON, and XML Data mapping, transformation, validation, troubleshooting, and error handling and End-to-end healthcare data exchange workflows - 5+ years in developing secure web portals or portal-integrated services retrieving/displaying healthcare data (API integration, authentication/authorization, RBAC, secure coding, production support). - 5+ years in programming in TypeScript, JavaScript, and/or Python. - 3+ years in (Strongly Preferred) implementing FHIR solutions using US Core profiles, Electronic Case Reporting (eICR) Implementation Guides, and other HL7 IGs. - 3+ years in (Strongly Preferred) integrating with or implementing FHIR servers, FHIR APIs, and interoperability platforms. - 3+ years in mapping, transforming, and validating healthcare data across HL7 v2, FHIR, and analytical models. - 3+ years in working with clinical code sets and terminologies: SNOMED CT, LOINC, ICD-10, CVX, and RxNorm. - 3+ years in implementing FHIR solutions on AWS or equivalent cloud platforms, integrating data with cloud ingestion pipelines, storage services, and analytics platforms. - 3+ years in modern application delivery: Git, CI/CD pipelines, automated testing, code reviews, logging, monitoring, and technical documentation. - 1+ year experience with AWS Health Lake, Snowflake, eICR, public health reporting/disease surveillance, and React / FastAPI / Terraform ASSYST is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, disability, military status, national origin or any other characteristic protected under federal, state, or applicable local law.