You will get your broken FHIR Integration Fixed (R4 / R4B)
Project details
If your FHIR integration is failing, returning errors, or not validating correctly, I will diagnose and fix the issue efficiently. I specialize in resolving reference errors, bundle structure problems, validation failures, and compliance issues in FHIR R4/R4B implementations. This service is focused on targeted troubleshooting and correction—not full system rebuilds. You will receive corrected payloads, clear explanations of the issue, and stable integration behavior.
Programming Languages
ASP.NET, Java, C#Coding Expertise
Localization, Performance OptimizationWhat's included
| Service Tiers |
Starter
$120
|
Standard
$300
|
Advanced
$550
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 6 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - |
Frequently asked questions
About Ahsan
Senior .NET / Java Backend Engineer | FHIR, EMPI & API Architecture
Karachi, Pakistan - 5:13 am local time
I specialize in:
HL7-FHIR interoperability engines
EMPI systems with deterministic and probabilistic matching
REST API architecture & enterprise integrations
EHR governance, ONC alignment & compliance-driven backend design
Microservices, concurrency control & performance optimization
Azure-based cloud deployments & scalable infrastructure
Recent Highlights
Led end-to-end delivery of a complete backend platform including REST APIs, business logic layers, database architecture, and Azure cloud infrastructure
Architected a FHIR interoperability engine integrating with Azure FHIR Server
Built a production-grade EMPI engine resolving cross-system patient duplication
Implemented governance-aligned backend systems supporting ONC-aware workflows
Additional Experience
FinTech & Payments: Secure payment portals, transaction safety, session management, thread-safe backend systems
Backend Engineering: REST APIs, microservices, background services, distributed auth, concurrency control, and performance tuning
Data & Cloud:
SQL Server (T-SQL), PostgreSQL, Oracle, Entity Framework, Hibernate, AWS & Azure deployments, cloud-based integrations
Steps for completing your project
After purchasing the project, send requirements so Ahsan can start the project.
Delivery time starts when Ahsan receives requirements from you.
Ahsan works on your project following the steps below.
Revisions may occur after the delivery date.
Error Review
Analyze payloads, logs, and validation results.
Root Cause Identification
Identify structural, reference, or compliance problems.