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Paul den Boer

PROFILE

Paul Den Boer

Paul den Boer contributed to the FirelyTeam/firely-cql-sdk by engineering a robust CQL SDK platform that streamlines clinical quality measure processing and code generation workflows. He refactored core library structures, enhanced CQL-to-ELM and ELM-to-C# translation, and modernized build automation using C#, PowerShell, and .NET. Paul introduced modular code generation, improved caching strategies, and strengthened integration with FHIR standards, resulting in more reliable and maintainable APIs. His work included extensive test coverage, submodule synchronization, and configuration-driven packaging, addressing interoperability and performance challenges. The depth of his contributions is reflected in the platform’s improved stability, extensibility, and developer experience.

Overall Statistics

Feature vs Bugs

79%Features

Repository Contributions

1,102Total
Bugs
106
Commits
1,102
Features
398
Lines of code
4,322,948
Activity Months16

Work History

February 2026

18 Commits • 4 Features

Feb 1, 2026

February 2026 monthly summary for FirelyTeam/firely-cql-sdk: Delivered cross-cutting platform enhancements that improve interoperability, reliability, and developer productivity. Achievements span synchronization maturity, codegen enablement, enhanced decision support, and tooling updates that align with the Firely CQL SDK integration runner. These efforts reduce time-to-delivery, improve clinical decision accuracy, and simplify maintenance across supported toolchains.

January 2026

93 Commits • 44 Features

Jan 1, 2026

January 2026 performance summary for FirelyTeam/firely-cql-sdk. Delivered stability, performance, and modernization improvements across core components and build tooling. Key features include a cache versioning and immutability refactor, code generation enhancements (reordered emission of logic methods and consolidated singleton generation), and code regeneration housekeeping to align artifacts with latest templates. Submodule and repository maintenance included updates to Firely.Cql.Sdk.Integration.Runner and Ncqa.DQIC, plus ongoing submodule coordination. Modernization efforts focused on build and target alignment to .NET 10.0, with dual-targeting for legacy scenarios (net8.0/net10.0) where needed. Enhancements to CQL/FHIR integration and ELM JSON serialization, including type conversion and caching improvements and migration to xsd2cs, added long-term reliability and performance. Documented namespace changes and docs improvements, and advanced testing and CI readiness through test refinements and CI config tweaks.

December 2025

54 Commits • 18 Features

Dec 1, 2025

December 2025 focused on robustness, performance, and maintainability of the Firely CQL SDK. Delivered API enhancements, dependency alignment, and major codegen refactors, with caching improvements and library/tooling regeneration to improve build times and reliability.

November 2025

4 Commits • 2 Features

Nov 1, 2025

Month 2025-11: Delivered two core features for FirelyTeam/firely-cql-sdk that modernize Java dependency management and tooling setup, improving build automation, consistency, and maintainability.

October 2025

4 Commits • 2 Features

Oct 1, 2025

In October 2025, delivered key testing enhancements for the Firely CQL SDK and aligned dependencies to ensure compatibility with the latest external modules, accelerating QA cycles and reducing integration risk.

September 2025

78 Commits • 33 Features

Sep 1, 2025

September 2025 performance summary for FirelyTeam/firely-cql-sdk. Focused on delivering core CQL-to-Elm capabilities, stabilizing the CQL processing stack, and strengthening CI/CD reliability. The month included substantial library refactoring, alignment of downstream dependencies, and improvements to tooling that collectively boost throughput, maintainability, and business value.

August 2025

92 Commits • 33 Features

Aug 1, 2025

August 2025 (2025-08) saw substantial stabilization and feature delivery in the FirelyTeam/firely-cql-sdk. Key work focused on CQL SDK reliability, code quality, and alignment with upstream dependencies. Delivered major features including CQL Tuple Handling and Testing Framework improvements, refactoring and stabilization of C# expression handling/definitions, and broad API/test-suite modernization. Submodule maintenance and codegen regeneration ensured consistency with dependent components (Firely.Cql, Ncqa.DQIC). Additional capabilities added for packager profiles and new measures scaffolding for QICore 2025 and CMS 2025, with significant CI/tooling enhancements and documentation updates. Several bug fixes and configuration improvements improved build reliability and test coverage. Business value: more stable API surfaces, faster CI cycles, easier maintenance, and improved interoperability across FHIR/CQL use cases.

July 2025

55 Commits • 17 Features

Jul 1, 2025

July 2025 performance summary for FirelyTeam/firely-cql-sdk focusing on packaging and SDK evolution, API clarity, and codebase hygiene. Key features and maintenance delivered across the repository: Submodules initialization/maintenance to stabilize dependencies; Packaging Toolkit API rename and refactor with updated input handling, type changes, and new examples; Documentation and XML comments added to clarify APIs and usage; LibraryPackager unit tests to validate packaging behavior and integration; ArtifactsById usage standardized across the codebase; Examples updated to reflect new packaging API with an added Run All command for easier demonstration/testing; SDK version updated to 5.12.0; Null-check safety improvements to reduce risk; and broader project/solution maintenance including cleanup of obsolete projects and folders, with packaging configuration cleanup.

June 2025

31 Commits • 12 Features

Jun 1, 2025

June 2025 (FirelyTeam/firely-cql-sdk) monthly summary focusing on key business value and technical achievements. Key features delivered: - Example and Packager Enhancements (feature): Added more examples and packager-related examples to improve developer guidance and usage coverage. Commits: 68dda312c95cb9684a3df91735f9559bfb49de30; f493343ce22589e1795f4c52b27950f70818be12. - Testing and Submodule Improvements (feature): Expanded tests and improved submodule support and test coverage. Commits: c100129577f9c71e9df5352d8c6076d98a7f583f; 223743ab64806b6f71f5a0347af395f736bf0208; 80cc34e9a8b85e3f525cc7e1ade41c3f09b87961. - Library System and API Enhancements (feature): Improves library qualifier handling, moves library identifier formatting into its own class, updates public API, and adds tests for named property code generation. Commits: dd023c00c26028c9b0ba34c450f9bb8225a1b553; e7ca6da3faa6a1af952338eb650daf66f5bf5b08; 32f7a15adea71b3619b97c6e345eb3972a26e7bb; de51954f735410cec392320c7123cf5994643f3f. - Miscellaneous code cleanups (feature): Small cleanup commits (no descriptive messages). Commits: 1564059ba93e3555ad878900374cc6e8835a16b0; f512a88c948a5239855ae259a6aa0ecd78ca806e; d6d3b5965b5c408cb372982d5d329177d2543102; 8b62b18df2d2fdab460213666baa50ffbc926aa0. - Add config / Update PublicAPI / Update examples (various refinements): Added config, updated PublicAPI, and refreshed examples to align with new API usage. Commits include: 4e823badb9ee016741ebba409275efb5279a3171; 120ffe2642eb7a8b2f93340e482bc245438eb687; 292f930d2b66609376b0684e46c3b9c4a2b247c7; c772f1ec9e3fcb8986e0b998180a52494184ee1a. Major bugs fixed: - Delete Output Folder: Cleanup/build hygiene by removing the output directory. Commit: cac6bd6df1f9714e095a9dd026aad33aa28675ca. - Fix Parsing: Resolved parsing issues in the codebase. Commit: 63605c646c01527356d6726eb4da1685e630fc0f. - Ctor Mapping Bug Fix: Map constructor parameters by name for C# instance creation. Commit: 54d2844db79470f707c88e079b3dc62755108a5d. - Save when not compiling: Allow saving C# files even if compile fails, improving developer flow. Commit: 7361146a133d6ab422b75ed06b34ec064ef2fec1. - Revert RedundantCastsTransformer: Reverted an optimization-related transformer. Commit: 2061abc0c56134c376c54053907e174b65e10733. - Correctly inject services for cql-to-elm types: Ensure correct service injection for CQL-to-ELM mappings. Commit: b47b3759a8257261b9c971735a95aff61143fce7. - Miscellaneous placeholder commits: housekeeping changes without descriptive messages. Commits: d34702ec2e49a5dad61afdc74d2a0903d9e611c4; d9a64afb2fdd26f1394ae2f9b71979b0b1b5ffae; ebf239de2341547941f0ad0393531d61c0d6fc70; 1564059ba93e3555ad878900374cc6e8835a16b0; f512a88c948a5239855ae259a6aa0ecd78ca806e; d6d3b5965b5c408cb372982d5d329177d2543102; 8b62b18df2d2fdab460213666baa50ffbc926aa0. Overall impact and accomplishments: - Strengthened developer experience and adoption: more examples and improved submodule/test coverage reduce onboarding time and integration risk. - Improved reliability and quality: fixes in parsing, ctor mapping, and service injection lead to more robust CQL-to-ELM workflows and API usage. - Build hygiene and maintainability: cleanup commits and output-folder removal reduce artifact churn and confusion. Technologies and skills demonstrated: - C# constructor parameter binding by name, public API evolution, and class-level encapsulation for library identifiers. - Expanded unit and integration tests, including submodules and named property code generation validation. - Comprehensive repo hygiene: cleanup, placeholder management, and help text corrections to improve tooling quality. - Strong focus on business value: easier library consumption, more reliable builds, and clearer API guidance for downstream teams.

May 2025

38 Commits • 25 Features

May 1, 2025

May 2025 performance summary for FirelyTeam/firely-cql-sdk. Delivered foundational library changes, architecture improvements, and developer-experience enhancements that enable versioned libraries, broader CQL concept support, and improved sample coverage. Implemented essential test integrations and callback capabilities, stabilized releases with default configurations, and fixed a core toolkit bug to improve runtime stability. The work enhances business value by enabling predictable library identification, robust dictionary handling, and streamlined code generation and testing workflows across the project.

April 2025

151 Commits • 44 Features

Apr 1, 2025

April 2025 (Month: 2025-04) — Delivered a major overhaul of the CqlComparers and equivalence semantics in FirelyTeam/firely-cql-sdk, integrated Elm support and improved CQL-to-FHIR build workflows, and strengthened configuration-driven canonicals and test infrastructure. The month combined substantial refactoring, testing, and packaging improvements that improve reliability, performance, and maintainability, unlock safer future refactors, and accelerate release readiness.

March 2025

78 Commits • 26 Features

Mar 1, 2025

March 2025 performance highlights for FirelyTeam/firely-cql-sdk. Delivered substantial feature work, reliability improvements, and maintainability enhancements across the SDK, with a clear business and technical impact on runtime integration, dependency management, and CQL/FHIR capabilities. Key results include expanded invocation toolkit with directory-based assembly loading and resource handling, synchronized submodules and dependencies, improved FHIR library ID handling with visibility via logging, and major CQL API/type refinements and adapters.

February 2025

117 Commits • 35 Features

Feb 1, 2025

February 2025 monthly summary for FirelyTeam/firely-cql-sdk. Key outcomes and business value: - Robust exception handling: introduced a strategy-pattern based approach to unify and simplify error handling across the SDK, improving reliability and maintainability of error flows. This reduces incident risk and accelerates debugging in production. - Build stability and cleanup: removed stray/empty committed files, ensured LibrarySet has all dependencies before resource packaging, and simplified flow by removing the prehandler in TrySelect. These changes lower build failures and merge conflicts, enabling smoother release cycles. - Dependency modernization and versioning: upgraded FirelySdk to 5.11.2 and updated project version to 2.0.12-alpha, positioning the SDK for upcoming features and ensuring compatibility with downstream consumers. - Analytics, metrics, and observability: created measures for analytics and enhanced logging, providing better visibility into usage patterns and system health to drive data-driven improvements. - Quality, testing, and maintainability: added unit tests for CqlLibraryString parsing with leading comments; performed extensive code cleanup, refactors, and reorganization (renames, modularization, and solution structure improvements) to enable faster iteration and easier onboarding. Overall impact: - More resilient, observable, and maintainable codebase with accelerated delivery cycles and reduced risk of production defects. The changes lay groundwork for future feature work and easier collaboration across teams. Technologies/skills demonstrated: - C#/.NET, strategy pattern, refactoring and architecture evolution, dependency management, unit testing, logging and observability, module/project restructuring, and submodule maintenance.

January 2025

209 Commits • 70 Features

Jan 1, 2025

January 2025 focused on delivering a more robust Cql SDK with runtime observability, modular code generation, and a stronger build/packaging pipeline, while stabilizing the API surface and improving overall performance and maintainability. Key work spanned runtime API and debugging capabilities, code generation enhancements, extensive refactoring for cleaner architecture, and integration efforts for packaging and tooling.

December 2024

62 Commits • 29 Features

Dec 1, 2024

December 2024 monthly summary for FirelyTeam/firely-cql-sdk: Focused on stabilizing resource generation, expanding the CQL-to-Elm/CQL-to-CSharp translation workflow, and enhancing packaging/tooling for the SDK. The work emphasizes business value through reliable code generation, modular design, and improved developer tooling.

November 2024

18 Commits • 4 Features

Nov 1, 2024

November 2024 (FirelyTeam/firely-cql-sdk) focused on delivering robust ValueSet handling, enhancing CMS library integration, stabilizing packaging, and upgrading tooling. Key outcomes include improved compatibility with updated standards, more reliable resource loading, and stronger test coverage, enabling safer downstream adoption and faster release cycles.

Activity

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Quality Metrics

Correctness91.8%
Maintainability92.2%
Architecture89.8%
Performance85.8%
AI Usage21.6%

Skills & Technologies

Programming Languages

BatchfileC#C++CQLCSharpCqlElmGitJSONJava

Technical Skills

.NET .NET Development C# CQL Extension Methods FHIR Library Utilities Logging Refactoring SDK Development Software Development.NET.NET Core.NET Development.NET development

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

FirelyTeam/firely-cql-sdk

Nov 2024 Feb 2026
16 Months active

Languages Used

C#C++CQLCqlJavaJavaScriptXMLCSharp

Technical Skills

.NET Software DevelopmentC#C# DevelopmentCQLCode Generation

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