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Mitchell D'silva

PROFILE

Mitchell D'silva

Worked on the ministryofjustice/hmpps-activities-management-api and related repositories, delivering features that improved API consistency, data integrity, and automation for prisoner activity management. Built endpoints for batch waitlist operations, appointment event enrichment, and historical audit retrieval using Kotlin, Spring Boot, and Hibernate ORM. Enhanced code ownership and CI/CD workflows, introduced security scanning with Snyk, and integrated Slack alerts for faster remediation. Addressed backend reliability by refining data models, implementing Envers-based auditing, and stabilizing ORM mappings. Focused on robust testing, integration coverage, and maintainable code, enabling accurate reporting, streamlined workflows, and secure, traceable development across backend and DevOps processes.

Overall Statistics

Feature vs Bugs

82%Features

Repository Contributions

24Total
Bugs
3
Commits
24
Features
14
Lines of code
3,812
Activity Months7

Work History

May 2026

1 Commits • 1 Features

May 1, 2026

May 2026 monthly summary for ministryofjustice/hmpps-activities-management: Delivered a security scanning workflow upgrade and Slack alert integration, replacing the Trivy-based process. Resulted in more robust vulnerability checks and faster visibility for remediation. No major bug fixes reported this month. Focused on secure and maintainable CI/CD improvements with clear traceability to a single commit.

April 2026

4 Commits • 4 Features

Apr 1, 2026

April 2026 monthly summary for ministryofjustice/hmpps-activities-management-api: Four major feature improvements with comprehensive test coverage, delivering safer automation, broader data exposure, and timely lifecycle management of activities. These changes reduce manual intervention, improve data accuracy for reporting, and strengthen system resilience across prisoner activities.

March 2026

9 Commits • 3 Features

Mar 1, 2026

March 2026 monthly summary for ministryofjustice/hmpps-activities-management-api. Focused on stabilizing core data flows, expanding API capabilities, and improving data governance to support reliable reporting and external integrations. All work aligns with business goals of accurate subject data handling, robust location/external activity management, and auditable waiting list processes.

January 2026

2 Commits • 1 Features

Jan 1, 2026

Monthly summary for 2026-01 focused on delivering business value through feature enrichment and stability improvements in ministryofjustice/hmpps-activities-management-api. The period centered on expanding appointment management capabilities with health-related categories and addressing ORM reliability to ensure data integrity, backed by updated tests and database scripts to reinforce quality.

December 2025

1 Commits • 1 Features

Dec 1, 2025

Monthly technical summary for 2025-12: Strengthened auditability and history tracking for waiting lists in ministryofjustice/hmpps-activities-management-api. Delivered a new endpoint to retrieve the application history, implemented Envers-based auditing with a dedicated audit table, and added comprehensive integration tests and supporting entity changes. This work improves traceability, regulatory compliance, and data integrity for critical waiting list workflows.

November 2025

3 Commits • 2 Features

Nov 1, 2025

November 2025 monthly summary for ministryofjustice/hmpps-activities-management-api: Delivered two core enhancements that drive efficiency, API consistency, and data quality, with improvements in waitlist handling and outbound event data. Key outcomes: - Waiting List Management and API Consistency: Added an endpoint to add a prisoner to up to five activity schedules in a single request, with validation to prevent duplicate activity schedule IDs. Standardized API endpoint patterns for waiting lists and integration API calls to improve clarity and consistency across services. - Appointment Event Category Code Enrichment: Added a categoryCode to appointment instance events, including an overloaded method to carry the category code, refining outbound event data and supporting improved downstream processing. Impact and value: - Reduced duplicate waitlist entries and enabled batch waitlist operations, accelerating workflow and improving data integrity. - Improved outbound event data quality for analytics and reporting, enabling better decision-making. - Clearer API boundaries and maintainability through endpoint standardization and code cleanup. Technologies/skills demonstrated: - REST API design and evolution in a Java-based backend - Unit/integration testing and test coverage improvements - Refactoring for API consistency and data quality - Git hygiene and repository maintenance aligned with CI/CD readiness Ticket references: SAA-3709, SAA-3814, SAA-3539.

October 2025

4 Commits • 2 Features

Oct 1, 2025

Monthly summary for 2025-10 focused on delivering high-impact ownership and UI quality improvements across two core repos, with an emphasis on business value through clearer accountability, faster PR reviews, and maintainability.

Activity

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Quality Metrics

Correctness95.0%
Maintainability86.6%
Architecture86.6%
Performance86.6%
AI Usage24.2%

Skills & Technologies

Programming Languages

HTMLKotlinNunjucksSQLYAML

Technical Skills

API DevelopmentAPI developmentAPI integrationBackend DevelopmentCI/CDCode OwnershipCode Ownership ManagementContinuous IntegrationDependency ManagementDevOpsFrontend DevelopmentGradleHibernateHibernate ORMKotlin

Repositories Contributed To

2 repos

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

ministryofjustice/hmpps-activities-management-api

Oct 2025 Apr 2026
6 Months active

Languages Used

KotlinYAMLSQLHTML

Technical Skills

CI/CDCode OwnershipDevOpsAPI DevelopmentBackend DevelopmentKotlin

ministryofjustice/hmpps-activities-management

Oct 2025 May 2026
2 Months active

Languages Used

NunjucksYAML

Technical Skills

Code Ownership ManagementDevOpsFrontend DevelopmentContinuous IntegrationSecurity Management