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David Thomas

PROFILE

David Thomas

Over an 18-month period, contributed to the ministryofjustice/hmpps-activities-management and related repositories by building and refining prisoner activity management features, including allocation workflows, waitlist enhancements, and live data integrations. Leveraged TypeScript, Node.js, and Nunjucks to deliver robust backend and frontend solutions, focusing on configuration-driven feature toggles, validation logic, and UI/UX improvements. Addressed operational risk by implementing environment-specific access controls and decommissioning legacy services. Enhanced data integrity through validation, scheduling, and telemetry updates, while maintaining strong test coverage with Cypress and Jest. The work emphasized maintainability, deployment readiness, and clear user guidance, supporting reliable reporting and scalable service delivery.

Overall Statistics

Feature vs Bugs

74%Features

Repository Contributions

164Total
Bugs
24
Commits
164
Features
67
Lines of code
313,978
Activity Months18

Work History

April 2026

5 Commits • 2 Features

Apr 1, 2026

April 2026 monthly summary for ministryofjustice/hmpps-activities-management. Focused on reducing UI complexity, improving activity creation UX, and stabilizing data defaults to enhance efficiency and data quality in activity management. Key work delivered across the month: - Activity UI improvements: hidden redundant attendance row and foundation tier to streamline Activity and Appointments flows (commits 8bf2c5751e5bc16784a5fcdffc8b9b70de127914; 0f0793b7758903af15b2ae7f5499bbf1e5790c01). - Activity creation UX improvements: clearer captions for outside activities and improved session time options, with added integration/test coverage (commits 06bab473e6fb1371fd038983e1263bcc0f52b28f; 57c5caf5a931cbacc849335bf08d8f8478f66aba). - Default initialization fix: initialize activityOutsidePrison to false on new activity and update related tests to improve reliability (commit 9706721ce01ab75f388791db679abcf1b1de48b9). Overall impact: - Reduced UI complexity and faster, clearer activity creation; improved data integrity and reliability across Activity management. - Strengthened test coverage and fixture usage to support stable deployments. Technologies/skills demonstrated: - Front-end UI refactoring and conditional rendering; improved validation messaging; end-to-end and integration test coverage; fixture and test reliability improvements.

March 2026

8 Commits • 2 Features

Mar 1, 2026

March 2026 contributions for ministryofjustice/hmpps-activities-management focused on delivering substantial waitlist and scheduling improvements, tightening data integrity, and improving UI/UX. Key features delivered included Waitlist System Enhancements with history details, status simplification, and requester options; and Scheduling and Activity UI Improvements across modify/display views and activity creation flows. Major bug fixes and quality work included removing the withdrawn status feature flag to simplify configuration, cleanup of the cancellation information banner, and updates to content activity times, with expanded test coverage for waitlist history ordering. Overall impact: streamlined waitlist operations, faster user actions, more reliable scheduling, and a maintainable codebase. Technologies/skills demonstrated: targeted code refactors (history username refactor, enum refactor), test updates, UI/UX improvements, and cross-functional collaboration.

February 2026

10 Commits • 2 Features

Feb 1, 2026

February 2026 delivered core enhancements to the waitlist workflow and appointment UI in ministryofjustice/hmpps-activities-management, delivering clear business value by improving user experience, data accuracy, and process transparency. The work includes enabling and refining the waitlist, history tracking, withdrawal capabilities, and date validation, along with user-facing appointment UI improvements. Stability and code quality were also enhanced through refactors and data-quality work.

January 2026

1 Commits

Jan 1, 2026

January 2026 monthly summary for ministryofjustice/hmpps-activities-management focusing on stabilizing the prisoner waitlist workflow through a targeted bug fix and refactor. Delivered a bug fix for the Waitlist Pending Dropdown, improved handling of pending vs. approved waitlist applications, and refactored the related logic for clarity and maintainability. The work enhances accuracy in prisoner allocation flows and reduces risk of misallocation due to UI rendering issues. Demonstrated solid code quality through peer review and a concise commit with SAA-3835.

December 2025

2 Commits • 1 Features

Dec 1, 2025

December 2025: Focused on strengthening prisoner allocation management within the HMPS Activities Management system by delivering targeted validation and UI improvements, reinforced by updated integration tests to reduce regression risk and support reliable reporting.

November 2025

4 Commits • 4 Features

Nov 1, 2025

November 2025 was focused on tightening access controls for HMP Cookham Wood, enabling responsible activity management workflows, decommissioning legacy service components to improve availability, and expanding end-date management for prisoner allocations. The team delivered four targeted changes across four repositories, with a clear line of sight to reduced risk, improved operational readiness, and stronger data integrity.

October 2025

14 Commits • 4 Features

Oct 1, 2025

2025-10 Monthly Summary: Business value delivered across four repositories with targeted feature toggles, live data enablement, UI maintenance controls, and flow enhancements. Key outcomes include offboarding HMPYOI Lewes and Berwyn with Norwich NWI directions disabled in pre-prod and prod, expansion of live prison data for Lewes, Berwyn, and Norwich (including Norwich AA service), and disabling the Whereabouts UI for Lewes, Berwyn, and Norwich with appropriate maintenance mode. Session cancellation flow enhancements delivered improved user feedback, pre-selection of cancellation reasons, history preservation, data existence checks, and added test coverage. Allocations flow robustness introduced redirect logic to route to the allocations dashboard when essential journey data is missing. Overall impact: reduced operational risk, improved data accuracy, smoother user journeys, and stronger test coverage. Technologies/skills demonstrated: config-driven feature flags (WHEREABOUTS_DISABLED), live data integration, UI maintenance mode, redirect handling, and cross-repo collaboration with test automation.

September 2025

8 Commits • 5 Features

Sep 1, 2025

September 2025 monthly summary highlighting feature delivery, bug fixes, and readiness activities across hmpps-activities-management and hmpps-activities-management-api. Focus areas included UI reliability, data visibility, test coverage, and deployment readiness through feature flag management.

August 2025

13 Commits • 5 Features

Aug 1, 2025

August 2025 monthly summary for the HM Prison and Probation Service (HMPS) activities management portfolio. This period delivered improvements across activities management, allocations workflows, API alignment, and environment-based feature toggles, with a strong focus on data integrity, user experience, and deployment readiness. Work spanned multiple repositories: hmpps-activities-management, hmpps-activities-management-api, whereabouts-api, and digital-prison-services.

July 2025

11 Commits • 5 Features

Jul 1, 2025

July 2025 monthly summary focused on enabling live data and end-to-end prisoner activity capabilities across the HM Prison services, while tightening production safety and governance by deactivating unused services. Delivered cross-repo features, bug fixes, and configuration changes with measurable business value, improved data accuracy, and scalable workflows.

June 2025

13 Commits • 6 Features

Jun 1, 2025

June 2025 performance summary focusing on key accomplishments across the HM Prison Activities Management suite. Implemented live data enablement and AA service activations for multiple sites, deprecated obsolete services and UI, and delivered a prisoner activity allocations dashboard. Improved data integrity, system readiness for live environments, and expanded operational capabilities across the ministry's services.

May 2025

11 Commits • 4 Features

May 1, 2025

May 2025 performance summary: Delivered live-activation features and data services across multiple prisons, implemented per-prison Whereabouts UI access control, improved CSV upload validation, and refined NMI data fix scheduling. These efforts reduce go-live risk, improve data integrity, and enhance user experience.

April 2025

10 Commits • 6 Features

Apr 1, 2025

April 2025 performance summary focusing on production readiness, feature delivery, and telemetry improvements across the HM Prison Activities Management API, Whereabouts, and Digital Prison Services. Delivered critical feature activations, go-live enablement, enhanced telemetry, and security/governance controls, driving business value through faster feature rollout, improved monitoring, and reduced exposure.

March 2025

8 Commits • 3 Features

Mar 1, 2025

March 2025 performance highlights focusing on business value, operational risk reduction, and technical excellence across four repos. Delivered DWI enablement and go-live for HMP Downview, implemented robust data fix scheduling, and simplified pay band management. Executed Downview deactivations to reduce risk and maintenance footprint while improving user experience messaging for education levels. Demonstrated cross-cutting skills in configuration management, API hygiene, UI/UX clarity, and environment-specific toggling.

February 2025

14 Commits • 6 Features

Feb 1, 2025

February 2025 monthly summary focused on delivering feature flag-driven capability expansions, stabilizing data workflows, and improving maintainability across multiple services. Key outcomes include enabling and activating HOI and WEI features, expanding WEI availability, and ensuring timely go-lives for HMP Bristol, along with targeted data fixes for sick leave processing and a TypeScript configuration cleanup to reduce future maintenance costs.

January 2025

11 Commits • 4 Features

Jan 1, 2025

January 2025 performance summary for HMPS projects. Focused on data reliability, live data enablement for additional facilities, dashboard UX improvements, and toolchain upgrades to improve security and compatibility. Delivered concrete features for live operations, stabilized data fix processes, and reduced configuration drift across prod/preprod environments.

December 2024

16 Commits • 6 Features

Dec 1, 2024

December 2024 monthly summary focused on delivering historical analytics capabilities, enabling location-specific features, improving data integrity and telemetry, and tightening security and UX across services. The month included cross-repo efforts with key work in keyworker-api, hmpps-activities-management-api, whereabouts-api, and hmpps-activities-management, delivering multiple cron-based reporting capabilities, feature toggles, analytics integrations, and user-facing improvements.

November 2024

5 Commits • 2 Features

Nov 1, 2024

November 2024 performance summary for ministry of justice development teams. Focused on decommissioning support for an existing location-tracking service while enabling a new, administrative feature set in Hindley and tightening production risk controls. Resulted in clear user guidance for decommissioned services, a staged feature rollout for Hindley, and environment-specific safeguards across multiple repositories.

Activity

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Quality Metrics

Correctness94.2%
Maintainability93.6%
Architecture90.8%
Performance90.8%
AI Usage20.8%

Skills & Technologies

Programming Languages

CSSDockerfileHTMLJavaJavaScriptKotlinNunjucksSCSSShellTypeScript

Technical Skills

API DevelopmentAPI IntegrationAPI integrationAnalytics IntegrationApplication MonitoringBack End DevelopmentBackend DevelopmentCI/CDClass-validatorCloud ServicesConfiguration ManagementCron JobsCypressDate-fnsDevOps

Repositories Contributed To

6 repos

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

ministryofjustice/hmpps-activities-management

Dec 2024 Apr 2026
15 Months active

Languages Used

NunjucksTypeScriptyamlDockerfileShellYAMLHTMLJavaScript

Technical Skills

API IntegrationAnalytics IntegrationApplication MonitoringBackend DevelopmentConfiguration ManagementDevOps

ministryofjustice/hmpps-activities-management-api

Nov 2024 Nov 2025
13 Months active

Languages Used

YAMLyamlKotlin

Technical Skills

Configuration ManagementDevOpsAPI DevelopmentBackend DevelopmentRefactoringTelemetry

ministryofjustice/whereabouts-api

Nov 2024 Nov 2025
12 Months active

Languages Used

YAML

Technical Skills

Configuration ManagementDevOps

ministryofjustice/digital-prison-services

Nov 2024 Nov 2025
10 Months active

Languages Used

NunjucksTypeScriptYAMLyaml

Technical Skills

Backend DevelopmentFront End DevelopmentUI DevelopmentConfiguration ManagementDevOps

ministryofjustice/keyworker-api

Dec 2024 Dec 2024
1 Month active

Languages Used

JavaKotlinYAML

Technical Skills

Backend DevelopmentCron JobsDevOpsKubernetes

ministryofjustice/hmpps-template-typescript

Feb 2025 Feb 2025
1 Month active

Languages Used

TypeScript

Technical Skills

Configuration ManagementTypeScript