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justin gardiner

PROFILE

Justin Gardiner

Justin Gardiner engineered and maintained core licensing and offender management systems across the ministryofjustice/create-and-vary-a-licence and related repositories. Over 16 months, he delivered robust API features, event-driven integrations, and UI enhancements using TypeScript, Kotlin, and Spring Boot. Justin focused on secure, reliable deployments by modernizing dependencies, implementing AWS SQS/SNS event processing, and refining CI/CD pipelines. His work included building domain event listeners, improving audit trails, and enhancing data integrity for licence workflows. Through disciplined code refactoring and configuration management, Justin ensured system stability, reduced operational risk, and enabled faster, safer feature delivery, demonstrating depth in backend and full stack development.

Overall Statistics

Feature vs Bugs

84%Features

Repository Contributions

260Total
Bugs
18
Commits
260
Features
98
Lines of code
45,119
Activity Months16

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026 (2026-04) monthly summary for ministryofjustice/licences: Focused on dependency management to improve compatibility and stability. Key delivered feature: Dependency Compatibility Upgrade. Updated package-lock.json to the latest dependency versions and marked several as peer dependencies, reducing risk of conflicts and easing downstream integration. Commit reference: e5b9fd899ad9d72a8eb2ca4945f52ef603f1f4d7 (Update dependencies. (#1677)). Result: improved compatibility with the current Node/npm ecosystem, better maintainability, and a smoother upgrade path for future releases. No major bugs are recorded as fixed in this period. Overall impact: strengthens core stability, reduces maintenance overhead, and positions the project for faster delivery of features. Technologies/skills demonstrated: dependency management, npm/package-lock handling, peer dependency design, semver awareness, and disciplined commit-driven change management.

March 2026

13 Commits • 3 Features

Mar 1, 2026

March 2026 performance summary focusing on end-to-end prison events processing and licence management improvements across CVL API and Licence API. Delivered production-ready event infrastructure, environment-wide enablement, and robust transactional/logging enhancements to strengthen reliability, observability, and business compliance.

February 2026

26 Commits • 8 Features

Feb 1, 2026

February 2026 monthly performance summary for the licensing and cloud platform teams. Focused on governance tightening for time-served licensing, robust hard-stop processing, improved access controls, and enabling event-driven workflows in development. Delivered API reliability fixes and environment configurations to support faster, safer deployments across three repositories.

January 2026

31 Commits • 7 Features

Jan 1, 2026

January 2026 performance summary: Delivered security hardening, streamlined event handling, and enhanced licensing workflows across key platforms, delivering measurable business value through resource optimization, data integrity, and improved decision-making. Key features were implemented across multiple repos, with a focus on security, reliability, and developer tooling.

December 2025

31 Commits • 13 Features

Dec 1, 2025

December 2025 monthly summary for the offender-data and licence-management domains. The team delivered cross-repo improvements to event-driven processing, enhanced auditing and data quality, and streamlined queue/configuration to support safer, faster deployments across development, test, pre-prod, and production environments. Key focus areas were real-time event handling for offender updates, robust time-served calculations, and improved UI/data presentation.

November 2025

31 Commits • 15 Features

Nov 1, 2025

November 2025 performance summary: Focused on production readiness, policy evolution, and deployment reliability across licensing services and cloud environments. Key features delivered include production‑grade recalls via configuration, removal of recalls feature flags, production domain event listener for COM allocations, and the Policy V4 progression model with configurable start dates and new conditions. Licence date management improvements were implemented to recalculate LSD automatically and support licence kind overrides. Operational work also improved CI/CD deployment workflows and environment-specific configurations, contributing to reduced risk and faster, more reliable releases.

October 2025

26 Commits • 9 Features

Oct 1, 2025

October 2025 delivered substantial end-to-end improvements across licensing workflows, data models, and API surfaces, driving safer licence creation, stronger recall guidance, improved governance, and richer data for reporting. Key outcomes include: (1) a more robust licence creation flow with explicit user confirmation, recall-status visibility, and corrected gate logic; (2) reworked early-release banners and UI messaging for consistent guidance and EPF-2 naming alignment; (3) strengthened licence access control and caseload sorting to show releases chronologically and restrict cross-team access; (4) metadata enrichment for licences (licenceKind and eligibleKind) across caseload and licence records to improve recall decisioning and downstream analytics; and (5) API/data-layer stability improvements, including COM caseload sorting, consolidated recall-related email prompts, and fixes to PRRD post-recall release date handling along with enhanced sentence/recall data structures. The work was delivered across three repositories with frontend, backend, and API/data-model changes, underscoring end-to-end capability.

September 2025

17 Commits • 10 Features

Sep 1, 2025

September 2025: API, UI, and governance enhancements across prison-api and licence platforms delivering measurable business value through improved data modeling, enhanced caseload usability, stronger auditability, and security-focused tooling.

August 2025

7 Commits • 3 Features

Aug 1, 2025

August 2025 monthly summary focusing on key accomplishments across two repositories: ministryofjustice/create-and-vary-a-licence and ministryofjustice/create-and-vary-a-licence-api. The month delivered meaningful improvements to user experience in licence management, enhanced visibility and synchronization of COM allocations with Delius, and introduced a new API endpoint with clearer code structure. The work aligns with business value by improving data consistency, reducing manual steps, and enabling staff to act on up-to-date information.

July 2025

31 Commits • 7 Features

Jul 1, 2025

July 2025 performance summary: Delivered cross-repo PRRD data integration features, recall messaging toggle, and PRRD licensing lifecycle support with robust start-date handling; fixed critical surname allocation bug; and stabilized deployments through CI/dependency updates and environment domain-event controls. These efforts unlocked improved data visibility and feedback collection, safer feature rollouts, accurate PRRD activation flows, and stronger security/stability across environments.

June 2025

24 Commits • 8 Features

Jun 1, 2025

June 2025 performance summary focusing on end-to-end domain events, reliability, and governance across three repositories. Key outcomes include: (1) CVL API domain events queues deployed across development, test1, test2, pre-production, and production environments with dead-letter queues, SNS subscriptions for event routing, Terraform configurations, Kubernetes secrets for access, and IRSA policies enabling secure cross-account access; (2) SQS-based domain event listener framework for COM allocation with environment-specific enablement, logging, and safeguards to prevent duplicate processing, including new handlers for prisoner data updates controlled by feature flags; (3) Data model integrity enhancements enforcing non-nullable fields to align with database constraints and strengthen handling of responsibleCom; (4) Deployment and environment reliability improvements with scheduled downtime support across non-production environments via Helm values (including pre-prod); (5) Dependency and tooling upgrades (Gradle) and business-focused enhancements (Licence API type updates, ACO caseload support pages, and pre-prod downtime scheduling).

May 2025

13 Commits • 7 Features

May 1, 2025

May 2025 performance summary for the licence APIs across ministryofjustice/create-and-vary-a-licence-api and ministryofjustice/create-and-vary-a-licence. Focused on observability, security hardening, API expansion, and migration readiness to drive reliability, governance, and faster, safer access to caseload data. Key outcomes include enhanced COM allocation logging with a concurrency test, CodeQL CI integration with permissions hardening, a new Variation Approvers Caseload API, backend migration prep for ACO caseload, and backend-driven caseload retrieval via feature flag and environment flag, complemented by dependency updates and safer logging configurations.

April 2025

2 Commits • 2 Features

Apr 1, 2025

Monthly work summary for 2025-04 focusing on delivering maintenance-driven features (dependency updates) and stability improvements across repositories.

March 2025

4 Commits • 3 Features

Mar 1, 2025

Concise monthly summary for 2025-03 focusing on business value and technical outcomes across three repositories: ministryofjustice/create-and-vary-a-licence, ministryofjustice/hmpps-prisoner-profile, and ministryofjustice/create-and-vary-a-licence-api. Delivered security-focused dependency upgrades, back-link integration to enhance navigation, and library deployment with tests, along with deployment configuration fixes. These efforts improved security posture, user flow, deployment reliability, and test coverage, enabling safer and faster releases.

February 2025

1 Commits • 1 Features

Feb 1, 2025

Monthly summary for Feb 2025: Codebase modernization across ministryofjustice/create-and-vary-a-licence-api, focused on dependency upgrades and Kotlin formatting. Highlights include upgrades of core libraries and tooling (Gradle plugins, Spring Boot, security configurations, PDFBox, PostgreSQL drivers, Gson, Arrow-kt, Hypersistence Utils, HMPPS SQS starter, Springdoc OpenAPI, WireMock, Awaitility, Swagger parser, Testcontainers) to align with supported versions and security patches, and formatting updates to comply with a new ktlint version. A minor Kotlin refactor was performed to adopt a more concise syntax.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary: Focused on dependency hygiene and service reliability. Delivered dependency version updates across ministryofjustice/create-and-vary-a-licence with no behavioral changes, ensuring security, stability, and compatibility. Fixed a Long comparison bug in ComCaseloadService within ministryofjustice/create-and-vary-a-licence-api to prevent mis-evaluation and runtime errors. These changes reduce security risk, improve stability, and lay groundwork for future feature work.

Activity

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Quality Metrics

Correctness93.0%
Maintainability90.0%
Architecture89.4%
Performance87.2%
AI Usage21.0%

Skills & Technologies

Programming Languages

CSSDockerfileGradleHCLHTMLJSONJavaJavaScriptKotlinMarkdown

Technical Skills

API DevelopmentAPI IntegrationAPI MockingAPI developmentAPI integrationAWSAWS SNSAWS SQSAuditingBack End DevelopmentBack-end DevelopmentBackend DevelopmentBackend developmentBuild AutomationBuild Tool Configuration

Repositories Contributed To

6 repos

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

ministryofjustice/create-and-vary-a-licence-api

Dec 2024 Mar 2026
15 Months active

Languages Used

GradleKotlinYAMLJavaShellSQLJSONMarkdown

Technical Skills

Backend DevelopmentBuild AutomationDependency ManagementCode FormattingGradleKotlin

ministryofjustice/create-and-vary-a-licence

Dec 2024 Feb 2026
13 Months active

Languages Used

JavaScriptTypeScriptCSSDockerfileHTMLJavaPythonShell

Technical Skills

Backend DevelopmentDependency ManagementBuild AutomationSoftware MaintenanceFull Stack DevelopmentNode.js

ministryofjustice/cloud-platform-environments

Jun 2025 Mar 2026
7 Months active

Languages Used

HCLJSONTerraformYAML

Technical Skills

AWSCloud PlatformCloud Platform ConfigurationCloud Platform EngineeringDevOpsIAM

ministryofjustice/licences

Jul 2025 Apr 2026
2 Months active

Languages Used

JavaScriptTypeScriptJSON

Technical Skills

Dependency ManagementNode.jsRefactoringTestingdependency managementversion control

ministryofjustice/prison-api

Sep 2025 Oct 2025
2 Months active

Languages Used

JavaKotlin

Technical Skills

API DevelopmentBackend DevelopmentEnum DesignJavaKotlin

ministryofjustice/hmpps-prisoner-profile

Mar 2025 Mar 2025
1 Month active

Languages Used

typescriptyaml

Technical Skills

Backend DevelopmentConfiguration Management