NHSDigital/personal-demographics-service-api
Oct 2025 – Jan 2026
4 Months active
Languages Used
JavaScriptPythonShell
Technical Skills
API DevelopmentAPI developmentDevOpsDockerError HandlingJavaScript
Kieron Harper
PROFILE
Kieron Harper
Kieron Harper worked on the NHSDigital/personal-demographics-service-api, delivering robust patient data handling and validation features over four months. He enhanced NHS number validation, improved error handling, and refactored code for maintainability using JavaScript and Python. Kieron addressed build and runtime issues by ensuring compatibility with Apigee’s JavaScript runtime and stabilized the Karate-based test suite, reducing CI failures. His work included Docker-based deployment improvements, semantic versioning simplification, and targeted bug fixes in patient search and patch operations. These efforts improved data integrity, deployment reliability, and test coverage, demonstrating depth in backend development, API design, and automated testing practices.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
38Total
Bugs
4
Commits
38
Features
4
Lines of code
992
Activity Months4
Your Network
206 people
Work History
January 2026
3 Commits
Jan 1, 2026January 2026 monthly summary for NHSDigital/personal-demographics-service-api: Focused on stabilizing the Karate-based test suite and ensuring compatibility with the current Karate version. Implemented test-suite changes including removing structuredClone usage in tests, switching to JSON-based cloning, tightening originalPatient property existence checks to prevent build-time failures, and reverting mocks changes to properly handle patient address updates in the patch flow. These changes significantly improved test reliability, reduced intermittent CI failures, and reinforced build stability for ongoing development.
3 Commits
Jan 1, 2026January 2026 monthly summary for NHSDigital/personal-demographics-service-api: Focused on stabilizing the Karate-based test suite and ensuring compatibility with the current Karate version. Implemented test-suite changes including removing structuredClone usage in tests, switching to JSON-based cloning, tightening originalPatient property existence checks to prevent build-time failures, and reverting mocks changes to properly handle patient address updates in the patch flow. These changes significantly improved test reliability, reduced intermittent CI failures, and reinforced build stability for ongoing development.
January 2026
December 2025
10 Commits • 1 Features
Dec 1, 2025December 2025 performance snapshot for NHSDigital/personal-demographics-service-api: Key features delivered include API Validation Improvements and Apigee JavaScript Runtime Compatibility fixes. Major bugs fixed encompassed build and runtime issues across RestrictRequest.js, SetStatusResponse.js, and related files, stabilizing deployment and test runs. Overall, these changes increase data quality and reliability of the demographic service, reduce downstream errors in patient matching, and improve deployment stability. Technologies/skills demonstrated include JavaScript/ES5 refactoring for Apigee runtime, robust NHS number validation and data cleaning, exception handling improvements, and targeted build/test problem solving.
December 2025
10 Commits • 1 Features
Dec 1, 2025December 2025 performance snapshot for NHSDigital/personal-demographics-service-api: Key features delivered include API Validation Improvements and Apigee JavaScript Runtime Compatibility fixes. Major bugs fixed encompassed build and runtime issues across RestrictRequest.js, SetStatusResponse.js, and related files, stabilizing deployment and test runs. Overall, these changes increase data quality and reliability of the demographic service, reduce downstream errors in patient matching, and improve deployment stability. Technologies/skills demonstrated include JavaScript/ES5 refactoring for Apigee runtime, robust NHS number validation and data cleaning, exception handling improvements, and targeted build/test problem solving.
November 2025
5 Commits
Nov 1, 2025Month 2025-11 highlights: targeted bug fixes and code quality improvements for NHSDigital/personal-demographics-service-api, with emphasis on NHS number handling, restricted-methods testing, return-status clarity, and Docker script reliability. Deliveries improved reliability, security posture, and CI/test stability, reducing production risk and enabling safer deployments.
5 Commits
Nov 1, 2025Month 2025-11 highlights: targeted bug fixes and code quality improvements for NHSDigital/personal-demographics-service-api, with emphasis on NHS number handling, restricted-methods testing, return-status clarity, and Docker script reliability. Deliveries improved reliability, security posture, and CI/test stability, reducing production risk and enabling safer deployments.
November 2025
October 2025
20 Commits • 3 Features
Oct 1, 2025October 2025: Delivered robust patient data handling and validation, simplified release semantics, and strengthened code quality and build reliability for NHSDigital/personal-demographics-service-api. Implemented NHS number validation, comprehensive data lifecycle improvements (create, update, lookup, patch), clearer error handling, and data cloning enhancements. Simplified semantic versioning based on major/minor history reduced complexity and improved release predictability. Strengthened test practices, CI stability, and Docker/scripts to support faster, safer deployments. These efforts enhance data integrity, reduce operational risk, and accelerate delivery of reliable patient demographics services.
October 2025
20 Commits • 3 Features
Oct 1, 2025October 2025: Delivered robust patient data handling and validation, simplified release semantics, and strengthened code quality and build reliability for NHSDigital/personal-demographics-service-api. Implemented NHS number validation, comprehensive data lifecycle improvements (create, update, lookup, patch), clearer error handling, and data cloning enhancements. Simplified semantic versioning based on major/minor history reduced complexity and improved release predictability. Strengthened test practices, CI stability, and Docker/scripts to support faster, safer deployments. These efforts enhance data integrity, reduce operational risk, and accelerate delivery of reliable patient demographics services.
Activity
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Quality Metrics
Correctness90.6%
Maintainability87.8%
Architecture85.8%
Performance87.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaScriptPythonShell
Technical Skills
API DevelopmentAPI developmentBackend DevelopmentData ValidationDevOpsDockerError HandlingJavaScriptPythonPython ScriptingPython scriptingScriptingShell ScriptingShell scriptingTesting
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