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David Wass

PROFILE

David Wass

Over six months, contributed to NHSDigital’s e-referrals-service-api and patient-care-api by delivering 11 features and resolving 9 bugs, focusing on API reliability, developer experience, and maintainability. Enhanced API error handling and documentation using OpenAPI Specification, improved test stability with Pytest, and modernized tooling through Poetry and ESLint migrations. Addressed dependency management and configuration issues in Python and JavaScript, ensuring smoother CI/CD workflows and reducing technical debt. Implemented security improvements such as stricter header validation and clarified authentication error messaging. Maintained clean repository baselines with disciplined housekeeping, supporting future feature delivery and consistent testing practices across both services.

Overall Statistics

Feature vs Bugs

55%Features

Repository Contributions

24Total
Bugs
9
Commits
24
Features
11
Lines of code
788
Activity Months6

Work History

April 2025

5 Commits • 2 Features

Apr 1, 2025

Concise April 2025 monthly summary for NHSDigital development work, highlighting key features delivered, major bugs fixed, overall impact, and technologies demonstrated. Focused on delivering business value, reliability, and maintainable code across two services.

March 2025

1 Commits • 1 Features

Mar 1, 2025

Month: 2025-03. Focused on improving API clarity and developer experience for the NHSDigital/e-referrals-service-api. Delivered targeted enhancements to authentication/authorization error messaging across R4 and STU3, improving client troubleshooting and reducing support overhead. No major bug fixes reported for this repo in March. Tech emphasis on cross-version alignment, spec quality, and governance.

February 2025

4 Commits

Feb 1, 2025

February 2025 monthly summary focusing on key accomplishments across NHSDigital/e-referrals-service-api and NHSDigital/e-referrals-service-patient-care-api. Highlights include security/validation improvements, release hygiene, and housekeeping with measured risk. Tests updated; release markers documented; no user-facing changes in non-critical commits.

January 2025

6 Commits • 3 Features

Jan 1, 2025

January 2025 monthly summary focusing on tooling modernization, dependency hygiene, and targeted API reliability improvements across two NHSDigital services. Delivered Poetry 2.0 readiness, stabilized dependencies, and fixed a critical 404 on service-filtered referral worklists, enabling more reliable builds and faster feature delivery.

December 2024

3 Commits • 1 Features

Dec 1, 2024

December 2024 Monthly Summary: Stability and hygiene improvements across NHSDigital e-referrals services. In NHSDigital/e-referrals-service-api, addressed a test configuration stability issue by correcting the Callback URL domain in tests, ensuring tests run against the proper endpoint and reducing flaky test outcomes. In NHSDigital/e-referrals-service-patient-care-api, performed repository housekeeping with a no-op maintenance commit to preserve a clean baseline for future feature work. These activities improved testing reliability, reduced risk in CI feedback, and supported smoother future feature delivery. Demonstrated proficiency in test configuration, change traceability, and CI/CD awareness to deliver business value with minimal risk.

November 2024

5 Commits • 4 Features

Nov 1, 2024

November 2024 — Delivered packaging, documentation, and workflow enhancements across two NHSDigital services, with targeted stability work to underpin ongoing reliability. Highlights include disabling package-mode in e-referrals-service-api to streamline builds; updating OpenAPI docs to clarify Application-restricted unattended access for A028/A029; expanding the Worklist with Appointment Slot Issues to support more scheduling scenarios; and performing internal housekeeping as part of stability improvements in the patient-care API. No user-facing bugs were introduced or fixed this month; stability work reduces technical debt and prepares for smoother deployments. Technologies demonstrated include Python packaging (pyproject.toml), OpenAPI documentation practices, and API/workflow schema evolution for improved developer experience and operations.

Activity

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Quality Metrics

Correctness58.4%
Maintainability58.4%
Architecture57.6%
Performance51.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

JavaScriptMakefilePythonTOMLYAMLyaml

Technical Skills

API DesignAPI DevelopmentAPI DocumentationAPI SpecificationAPI TestingBackend DevelopmentBuild ToolsCI/CDConfiguration ManagementDependency ManagementLintingMockingOpenAPI SpecificationPoetryPytest

Repositories Contributed To

2 repos

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

NHSDigital/e-referrals-service-api

Nov 2024 Apr 2025
6 Months active

Languages Used

TOMLYAMLPythonJavaScriptyaml

Technical Skills

API DocumentationAPI SpecificationConfiguration ManagementOpenAPI SpecificationBackend DevelopmentTesting

NHSDigital/e-referrals-service-patient-care-api

Nov 2024 Apr 2025
5 Months active

Languages Used

MakefilePython

Technical Skills

Configuration ManagementDependency ManagementPoetryPython PackagingBackend DevelopmentTesting