January 2025 focused on delivering a clearer Calculation Summary, more reliable data for release dates, and scalable infrastructure. Improvements include UI/UX enhancements, NOMIS data fetch enhancements, release date override hinting, increased memory for analytics, and a Node.js upgrade, all aimed at reducing manual verification, improving data accuracy, and supporting future growth.

December 2024: Delivered robust enhancements across two MOJ repositories to improve accuracy of release-date calculations, strengthen validation, and enhance visibility of exclusions. Focused on Tranche 3 logic, SDS40 handling, and clear error messaging, delivering features with direct business value and broader test coverage.

November 2024 monthly engineering summary for release-date tooling. Delivered major features across two repositories with a focus on data transparency, validation, and user debugging capabilities, aligning business value with technical excellence. Key outcomes: - JSON View for comparison mismatches in ministryofjustice/calculate-release-dates enables transparent debugging and validation by inspecting raw comparison data; UI button, API endpoints, and typing groundwork established. This sets up the user-facing inspection capability and reduces triage time. - Date calculation and hint display improvements in ministryofjustice/calculate-release-dates-api include a SDS hints cutoff, alignment of hints with the feature toggle, updated data models with comprehensive tests, and refinements to BOTUS/TUSED date calculation and display to prevent incorrect outputs. - SA20 pre-2020 offence validation safeguards added/refined to prevent incorrect release date calculations for SA20 and SHPO-related offences entered before 1 December 2020, with updated validation logic and test coverage. - Strengthened testing and data model validation across both repos, increasing regression safety and overall reliability of release-date calculations and related UI/API surfaces.

2024-10 Monthly Summary — ministryofjustice/calculate-release-dates-api. Delivered a new Detailed Person Comparison API endpoint exposing granular JSON data for person comparisons (inputs, sentences, offenses, adjustments), enabling fine-grained visibility for release-date calculations. Reintroduced DTO_RECALL validation by adding the ValidationCode enum entry to support detention and training orders with specific breach terms, restoring backward compatibility with historical data parsing. These changes improve data fidelity, decision support, and resilience to legacy data. Technologies demonstrated include API design, JSON data modeling, backward-compatibility strategies, and enum extension with commit traceability.