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Matthew Howell

PROFILE

Matthew Howell

Worked across multiple Ministry of Justice repositories, delivering backend features and infrastructure improvements with a focus on reliability, maintainability, and security. In laa-maat-court-data-api, implemented persistence-before-mapping for RepOrder entities using Java and Hibernate, refactored boolean mapping with YesNoConverter, and overhauled test suites for clarity and coverage. Enhanced CI/CD pipelines and dependency management in laa-crime-commons and laa-maat-orchestration, optimizing Gradle caching and modularizing release workflows with YAML and CircleCI. Addressed security vulnerabilities through targeted dependency upgrades and standardized error handling. Emphasized test-driven development, robust API validation, and build automation to support safer deployments and faster iteration across projects.

Overall Statistics

Feature vs Bugs

88%Features

Repository Contributions

86Total
Bugs
3
Commits
86
Features
23
Lines of code
104,540
Activity Months5

Work History

June 2026

8 Commits • 3 Features

Jun 1, 2026

June 2026: Improved data integrity, API reliability, and test discipline for laa-maat-court-data-api. Key outcomes include persistence-before-mapping for RepOrder with saveAndFlush, Hibernate YesNoConverter adoption for boolean mappings, and a thorough RepOrderMapper test suite overhaul with static test data builders and parameterized tests. These changes reduce DTO drift, improve mapping consistency, and boost maintainability, enabling safer deployments and faster future changes.

May 2026

13 Commits • 3 Features

May 1, 2026

May 2026 performance summary: Delivered substantive CI/CD reliability and build optimizations across two repos, resulting in faster feedback loops, more predictable releases, and improved test stability. In ministryofjustice/laa-crime-commons, the CI/CD release workflow was modularized with parameterized release types and improved validation, the default release type was updated to snapshot to reduce blast radius, and Gradle caching was streamlined, contributing to shorter pipeline times. Build caches were consolidated and scoped to relevant modules, lowering resource usage. In ministryofjustice/laa-maat-orchestration, Passport Assessment tests were stabilized by isolating debug logging effects, clarifying assertions, and applying formatting improvements, boosting test reliability and maintainability. Overall, these changes reinforce semantic versioning accuracy, reduce manual errors, and demonstrate strong proficiency in CI/CD engineering, Gradle caching strategies, and test quality engineering.

April 2026

40 Commits • 11 Features

Apr 1, 2026

April 2026 delivered critical business improvements and substantial technical enhancements across multiple MOJ Maat repositories, with a focus on correctness, reliability, and maintainability. Key features delivered include: 1) Court-type aware financial hardship mapping: adds CourtType parameter to the financial assessment mapping, refactors MeansAssessmentDataBuilder, and extracts hardship logic into a reusable helper to support differentiated hardship handling by court type; 2) ProceedingsMapper testing enhancements: expanded coverage for edge cases and clarified assertions to ensure only magistrates’ hardship is processed, improving test reliability; 3) Slack notification configuration enhancements for laa-maat-court-data-api: configurable inputs, standardized payloads, and date formatting consistency; 4) CI/CD and tooling modernization: SonarCloud integration, workflow context updates, job naming normalization, and dependencies/test framework upgrades across multiple repos (CircleCI, Gradle-based builds, Pitest and Spring Boot upgrades, resilience tooling and mocks); 5) Build system modernization and dependency strategy: Java toolchains usage, Jackson BOM adoption for version alignment, and comprehensive dependency reorganizations for maintainability. A notable bug fix included restoring the WebClient bean in test context after a Spring Boot upgrade, preventing test-time bean instantiation failures. Overall, these changes enhance business value through more accurate hardship processing, faster and more reliable deployments, and improved test quality and maintainability.

March 2026

22 Commits • 6 Features

Mar 1, 2026

March 2026 delivered targeted stability, security, and quality enhancements across three repositories (court data API, orchestration, and crime commons). Focused on validating IOJ appeals, upgrading core dependencies for security and performance, and standardizing error handling to improve developer experience and customer-facing reliability. The month also laid groundwork for faster iteration and fewer CI blockers through build/config improvements and enhanced test coverage.

July 2025

3 Commits

Jul 1, 2025

July 2025 monthly summary for ministryofjustice/laa-court-data-ui. Focused on security remediation and keeping the frontend stack up to date with minimal risk to production. Delivered critical vulnerability fixes by upgrading frontend-related dependencies; changes confined to the package-lock.json lockfile with updated versions and integrity/resolved URLs, resulting in reduced security risk without altering application code.

Activity

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Quality Metrics

Correctness98.4%
Maintainability97.2%
Architecture97.0%
Performance97.4%
AI Usage20.2%

Skills & Technologies

Programming Languages

GroovyJavaJavaScriptYAML

Technical Skills

API TestingAPI developmentAPI validationAWSBackend DevelopmentBuild AutomationBuild ConfigurationCI/CDCircleCIContinuous IntegrationDependency ManagementDevOpsDockerDocumentationGitHub Actions

Repositories Contributed To

7 repos

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

ministryofjustice/laa-crime-commons

Mar 2026 May 2026
3 Months active

Languages Used

GroovyJavaYAML

Technical Skills

DocumentationGradleJUnitJavaSonarQubeSpring Framework

ministryofjustice/laa-maat-court-data-api

Mar 2026 Jun 2026
3 Months active

Languages Used

GroovyJavaYAML

Technical Skills

API TestingAPI validationGradleJUnitJavaSpring Boot

ministryofjustice/laa-maat-orchestration

Mar 2026 May 2026
3 Months active

Languages Used

GroovyJavaYAML

Technical Skills

Dependency ManagementGradleSpring Bootbuild managementdependency managementAPI development

ministryofjustice/laa-crime-evidence

Apr 2026 Apr 2026
1 Month active

Languages Used

GroovyYAML

Technical Skills

Build ConfigurationCI/CDCircleCIContinuous IntegrationDevOpsGradle

ministryofjustice/laa-crown-court-contribution

Apr 2026 Apr 2026
1 Month active

Languages Used

GroovyYAML

Technical Skills

CI/CDCircleCIDevOpsGradleJavaSonarCloud

ministryofjustice/laa-crown-court-proceeding

Apr 2026 Apr 2026
1 Month active

Languages Used

GroovyYAML

Technical Skills

Build AutomationCI/CDCircleCIContinuous IntegrationDependency ManagementDevOps

ministryofjustice/laa-court-data-ui

Jul 2025 Jul 2025
1 Month active

Languages Used

JavaScriptYAML

Technical Skills

Dependency ManagementSecurity Patching