Shamil N.
HL7/FHIR Integration Expert | Fixing Complex Healthcare Integrations
I help healthcare organizations design, fix, and deliver real-world interoperability solutions - not just theoretical HL7/FHIR/IHE implementations. With 15+ years of hands-on experience, I've built and deployed integrations across HL7v2, HL7v3, C-CDA, FHIR, and IHE for more than 50 organizations worldwide. I work directly at the message level - transformations, mappings, validation, conformance, and troubleshooting - using tools like Mirth Connect, Apache NiFi, and Smile CDR. Many clients come to me when: • integrations don't work as expected • FHIR implementations become too complex • HL7 mappings break across systems • conformance and validation issues block go-live I don't just advise - I build, debug, and deliver working solutions. What makes me different • Author of HL7 v2/v3 specifications and profiles • Contributor to early HL7 FHIR (STU3) • Primary author for Canadian Core/Baseline FHIR profiles • published books and multiple training courses on HL7/FHIR • All HL7 certifications + IHE + SNOMED CT training up to Authoring Level 1 I work at the intersection of specification and implementation - where standards meet real systems. What I can help you with: • HL7v2 / HL7v3 interface development and troubleshooting • FHIR API design, profiling, and implementation • HL7v2 ↔ FHIR transformations (ADT, ORU, OML, etc.) • FHIR ↔ OMOP transformations • C-CDA parsing, generation, validation and C-CDA ↔ FHIR transformation • Integration engine development (Mirth Connect, Apache NiFi) • Conformance testing and validation (HL7v2/v3, FHIR, C-CDA) • Fixing broken integrations and production issues • Implementation Guides (IG), FSH, SUSHI • IHE / HIE integrations (XDS, XCA, XCPD, etc.) Technical stack: • FHIR (R4, STU3), HL7 v2/v3, C-CDA, IHE • Mirth Connect, Apache NiFi, Smile CDR, Aidbox • Java, JavaScript, Python, React, SQL, XML, XSLT, Schematron • Touchstone, Simplifier, Forge, IG Publisher AI & Automation (Applied to Healthcare Interoperability) • Multi-agent AI workflows for healthcare data transformation and validation • LLM-assisted HL7/FHIR mapping and interface documentation • AI-driven data quality analysis and anomaly detection in healthcare messages • Automation of conformance testing and validation workflows using LLM-based agents • Use of AI tools to accelerate implementation guide development and integration debugging Certifications • HL7 FHIR Advanced Developer • HL7 FHIR Foundational Implementer • HL7 FHIR R4 Proficiency • HL7 v2 Control Specialist • HL7 CDA Specialist • HL7 v3 RIM Specialist • IHE Certified Professional • SNOMED CT Terminology Services Let's work! If you need someone who understands both the standard and the implementation, I can help you move faster and avoid costly mistakes.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $332
Billed in all: $260,100$260k
$332 in the last 6 months
Across 98 contracts
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 14
Rarest: top 22% in Apache NiFi, of 54. Ranked by MRR among everyone on Upwork with the skill.
- ECMAScript for XML1 freelancers · 🇨🇦 #1Top 100%🇨🇦#1 of 1
- #12Apache NiFi54 freelancers · 🇨🇦 #1Top 22%🇨🇦#1 of 3
- #17XSLT60 freelancers · 🇨🇦 #1Top 28%🇨🇦#1 of 3
- #21Mirth Connect50 freelancers · 🇨🇦 #1Top 42%🇨🇦#1 of 2
- #46Electronic Data Interchange101 freelancers · 🇨🇦 #1Top 46%🇨🇦#1 of 2
- #54Health Level 7114 freelancers · 🇨🇦 #2Top 47%🇨🇦#2 of 3
- #96FHIR182 freelancers · 🇨🇦 #1Top 53%🇨🇦#1 of 2
- #175XML717 freelancers · 🇨🇦 #4Top 24%🇨🇦#4 of 20