Erikson Bahr focused on enhancing the robustness of FHIR path evaluation in the FirelyTeam/firely-net-sdk repository by addressing how missing resources are handled during backend processing. He implemented nullability support in the FhirPath ElementResolver, allowing it to return nullable ITypedElement objects when resources could not be found. This technical approach, using C# and leveraging his expertise in API and backend development, reduced runtime errors and improved the stability of FHIRPath evaluation for downstream integrations. Erikson’s work demonstrated a thoughtful approach to error handling and contributed to a more resilient library, supporting reliable healthcare data processing in .NET environments.