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matt heery

PROFILE

Matt Heery

Over 15 months, this developer engineered and maintained the ministryofjustice/modernisation-platform-environments repository, delivering secure, scalable cloud infrastructure for data governance, analytics, and operational workloads. They implemented features such as S3-to-S3 data replication, Lambda-driven data pipelines, and robust IAM role management, leveraging Terraform, Python, and AWS services including Lake Formation, S3, and Lambda. Their work emphasized automation, security hardening, and environment segregation, introducing CI/CD improvements, WAF protection, and granular access controls. Through iterative refactoring and extensive bug fixes, they improved deployment reliability, streamlined data movement, and enabled compliant, production-ready environments supporting analytics, data science, and cross-account resource management.

Overall Statistics

Feature vs Bugs

30%Features

Repository Contributions

713Total
Bugs
289
Commits
713
Features
126
Lines of code
25,274
Activity Months15

Work History

June 2026

48 Commits • 8 Features

Jun 1, 2026

June 2026 was characterized by accelerating security hardening, reliability, and cloud infrastructure improvements across two critical environments. Delivered WAF protection for the API Gateway; added robust response handling for the update p1 export API; implemented outbound Route53 Resolver with Secrets Manager integration for dev, and introduced SSM parameter-based IAM role management for the Update P1 API, enhancing secure configuration management. Rolled out seeds initialization and Entra secret handling to strengthen data setup and secret lifecycle. Addressed a broad set of stability and correctness issues, including counters/metrics recalibration, VPC protections, test visibility tuning, and code cleanups, culminating in closer production readiness and reduced deployment risk. These changes demonstrate proficiency in AWS services, security, IaC, and data integrity practices with a clear business impact: improved security posture, reliability, and faster, safer production deployments.

May 2026

49 Commits • 10 Features

May 1, 2026

May 2026 monthly summary: Across three MoJ repositories (modernisation-platform-environments, modernisation-platform, and cloud-platform-environments), the team delivered security enhancements, deployment improvements, and data-access controls while stabilizing configurations through a broad set of IAС and IaC fixes. Key features and tests were introduced and production-grade access patterns extended to support secure cross-account resource management. The work strengthened developer productivity, reduced risk, and improved compliance readiness through proactive resource governance and environment segregation.

April 2026

30 Commits • 7 Features

Apr 1, 2026

April 2026: Delivered substantial platform improvements across environments with a focus on security, automation, and production readiness. Implemented export pipeline enhancements to filter and simplify exports, expanded Lambda processing with event-driven triggers and configurable concurrency, and extended IAM/Lake Formation provisions across test and production. Established production readiness, including a centralized dashboard and GitHub Environments coverage, and tightened security and infrastructure hygiene through Terraform IAM policy fixes, removal of unnecessary S3 permissions, and cleanup of obsolete SSM code. These changes reduce noise, accelerate deployments, strengthen data access controls, and enable scalable insights.

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026 monthly summary for ministryofjustice/modernisation-platform-environments: Delivered Data Insights Enablement by adding consumption databases to support data science and developer teams, enabling acquisitive crime data insights and broader data-driven features. Primary commit: 1d9590c0b7b4fc01e48091bf38c7a1969bb5d208. No major bugs fixed this month; no blockers reported. Overall impact includes improved analytics readiness, faster data-driven decision making, and enhanced developer productivity. Technologies/skills demonstrated include database provisioning and design, data modeling, SQL/data engineering practices, and effective version control.

February 2026

47 Commits • 9 Features

Feb 1, 2026

February 2026 — Monthly summary for the Ministry of Justice cloud platforms team. Focused on accelerating delivery, hardening security, expanding data processing capabilities, and improving CI/CD reliability for electronic monitoring workloads. Key features delivered: - Terraform Plan Automation: Adds automation to trigger Terraform plans as part of CI/CD pipelines, reducing manual steps and accelerating validation. Commits: 498b9f380c4e1ae414fa9c667f1ce99ab4afdc71; 141380df898a43bfe6829092a9b0989cb7f625df - DevOps Infrastructure Security Hardening: Privatise all subnets to enhance security posture. Commit: feb1a89944c333674eb35992d06699f822570796 - Dev CADT Runner for EM and CI tooling: Adds development CADT runner for EM environment, along with runner permissions and CI testing artifacts. Commits: 1d954ddc1ff3ee8fcb97c2997872a648e50cdfd4; 4fe58fb01fc6fb4305327ec4379a959f4a79402c; afa2e375cf83ffd5b71fd0052645050be1cd1efd - Data infrastructure expansion: Added three new databases and fan-out infrastructure to support distributed processing. Commits: 628b1ba84dfaa7263a607b6baa446578228d1d94; e019b552a19e6eb83a4b1e188bc5fc87f083b412 - EM data governance namespace and dashboard fix: Introduced Electronic Monitoring Data Validation namespace and resolved a dashboard URL spelling issue to improve reliability. Commits: b0514a99882b77c8bbca43e93f15cf5f43bf772f; c1698dec53d8729ea4abbe6a009698958dd6263b Major bugs fixed: - S3 Copy Batch Permissions Fix: Added required permissions for S3 copy batch. Commit: 8ed43e40afb4821b35bcf2cc23a4c19e192659d5 - Initiate Replication: Fix to initiate replication workflow. Commit: 9e87dcd480fddc01257d76548f1f78c4b572df1e - Bucket-to-Bucket Process Landing: Fix to ensure bucket-to-bucket listing for process landing. Commit: 5be3fc52ed2f09c9d088faf160b9db3962ed0063 - Dev DBT Runner: Fix: add dev DBT runner. Commit: b7d44f935e91621209634d5154ebf805779491e4 - Longer Prefix: Fix to extend the prefix length. Commit: f3ccd450a3073bcde2a6d33fb03384243148dbac - Remove Test Access Temporarily: Fix: remove test access temporarily. Commit: 607218dbdcc4bd9642be6f084e66fadbdf447498 - Re-add Test MDSS to DI: Fix: re-add test mdss to DI. Commit: 11a1b24a93cc56ec5e07f4b956388102ab23e8de - Remove Copy Access: Fix: remove copy access. Commit: e300e256b1da5b463285b7537fe8ef5358969d16 - Remove Unneeded Lambdas: Fix: remove lambdas we don't need anymore. Commit: 19a9556c9d782c4022d2931512167ceb7025c59e - Export and queue enablement restoration: Restore and stabilize export/queue wiring (exports, SQS, and related queue notifications); multiple commits across the month to re-enable dynamism and fix wiring. Commits include: bad8f55d89a8e26efc98809185ee8adec178d03c; 2a8a2d75d1c859f7adb78f731a2363538ccb344b; a5c51d06e7c2b02ea327beb56b0c3f5f25b005e5; ba1cbdbf7752674cf8c82b11b7a102db6794270c; 2af09cdc014d00def38ab6f0180b1c1c96f01c51; 42dfe5368b390009b1c55f2332fcd3c2b98f6936; f0720b69846d2a06c1f763df45f09358423906f1 - Misc syntax and test fixes: Addressing syntax issues, list sizing, and test copy cleanup across environments. Commits include: 371f862d436a2771b273ba81eeaab27abe40872e; 9bf2b8731040f05b9a92e44939dc89a559579618; d21c236243c3efa2041cbe293bad2d466b15ef0f; 582093e787d9884cb33bcc915e5f300a091f8ba3; 5de46d624c5b7192f7777e2736a6fb3e6931b21f Overall impact and accomplishments: - Improved security posture by privatizing subnets across environments and reinforcing access controls. - Accelerated release velocity through Terraform automation, CI/CD improvements, and developer tooling. - Expanded data capabilities with additional databases and a scalable fan-out architecture to support distributed processing. - Strengthened data governance and operational reliability for Electronic Monitoring workloads, including namespace governance and UI consistency. Technologies and skills demonstrated: - Infrastructure as code (Terraform), CI/CD automation, and pipeline orchestration - AWS networking and security hardening (private subnets, IAM, resource policies) - CADT runner configuration and CI tooling integration - Data engineering: additional databases, fan-out processing, and DBT runner support - Data governance, namespace management, and monitoring/observability considerations

January 2026

106 Commits • 10 Features

Jan 1, 2026

January 2026 focused on advancing data movement, replication, governance, and developer productivity for ministryofjustice/modernisation-platform-environments. Key deliverables include Lambda-based S3 to S3 data copy and the introduction of bucket replication (non-Lambda) to improve data locality and reduce lambda overhead, plus a shift to copying the original bucket for simpler bucket handling. Security and policy correctness were strengthened through extensive bucket policy refactoring, v2 policy alignment, and consistent IAM/KMS usage. Development efficiency and observability were improved by CI/CD cleanup (removing obsolete pipelines), standardized alarm naming, and enhanced metrics accuracy. Additional improvements included: SQS-based decoupling for P1 lambda, enhanced bucket identification and manifest bucket support for better traceability, and portfolio-wide improvements to environment gating and deployment stability. A temporary FMS copy workflow was introduced and later removed as part of the data copy strategy refinement.

December 2025

35 Commits • 9 Features

Dec 1, 2025

December 2025 monthly summary for ministryofjustice/modernisation-platform-environments. Focused on delivering features for historical infrastructure analysis, strengthening deployment hygiene, and expanding governance, while fixing a broad set of bugs to improve reliability and cross-environment consistency. Key deliverables include a CSV-based loader for historic infrastructure data, DMS Lambda permission improvements, a refactor of DLT load to MDSS, and new governance workgroups, along with targeted cleanup to reduce technical debt and production risk.

November 2025

58 Commits • 12 Features

Nov 1, 2025

November 2025 delivered foundational platform enhancements, data ingestion improvements, governance enhancements, and stability fixes across three repositories. The work strengthened data pipelines, tightened security and configuration controls, and increased throughput while reducing operational risk.

October 2025

41 Commits • 12 Features

Oct 1, 2025

October 2025 performance focused on delivering scalable data exports, reliable data pipelines, governance enhancements, and developer tooling improvements. The work strengthened business value through faster data extraction, more reliable event processing, tighter access controls, and enhanced development workflows across environments and platforms.

September 2025

76 Commits • 11 Features

Sep 1, 2025

September 2025 performance summary for ministryofjustice/modernisation-platform-environments: Delivered core infra and data platform enhancements with measurable business value. Key features include a Buddi SFTP server, expansion of the data schema with two new tables, and infrastructure hardening (IP permissions and SSH configuration) to strengthen security and reliability. Strengthened governance with a policy and role enabling EM to create Airflow policies. Improved operational reliability and maintenance through code cleanup and release hygiene, complemented by messaging infrastructure improvements via an SQS queue. Additional enhancements include unified S3 endpoint usage across all jobs and ongoing alignment with security tooling and encryption strategy updates.

August 2025

34 Commits • 3 Features

Aug 1, 2025

August 2025 monthly summary for ministryofjustice/modernisation-platform-environments. Delivered secure data loading and processing capabilities, expanded test coverage, and hardened permission models across data lakes and identity layers. Focused on enabling ServiceNow data loading, UDF processing, end-to-end validation, and stable data access controls, translating to reduced operational risk and accelerated delivery of compliant data assets.

July 2025

85 Commits • 8 Features

Jul 1, 2025

July 2025 performance highlights for ministryofjustice/modernisation-platform-environments. Delivered secure secrets management for ServiceNow, established IAM roles and Lambda infrastructure, and advanced data-plane capabilities with Snow DB integration. Implemented production-only secrets access and IAM hardening, enhanced CI/CD deployment readiness with an Airflow tag update, and completed database/table enhancements to support scalable environment provisioning. These changes reduce time-to-market for new environments, improve security posture, and enable governed, scalable deployments across environments.

June 2025

13 Commits • 4 Features

Jun 1, 2025

June 2025 monthly summary for ministryofjustice/modernisation-platform-environments. Focused on security hardening, IAM federation improvements, data processing enablement, and CI/CD reliability. Delivered measurable business value through strengthened security controls, clearer access governance, and more maintainable infrastructure pipelines, enabling scalable data operations with reduced operational risk.

May 2025

45 Commits • 14 Features

May 1, 2025

May 2025: Focused on hardening the Modernisation Platform Environments, enabling secure data movement and governance while removing legacy/unused configurations to improve prod readiness. Delivered SFTP transfer infrastructure for LCM, GPS, Centurion (including a dedicated new SFTP server for LCM), introduced new key material, and added Lambda role ARN support. Completed extensive environment cleanup—removing dev/prod artifacts and outdated configurations—to reduce risk and accelerate deployment. Strengthened security and governance through Checkov remediation, updated Glue catalog behavior, and clarified cross-account data permissions.

April 2025

45 Commits • 8 Features

Apr 1, 2025

April 2025 monthly summary for ministryofjustice/modernisation-platform-environments. Delivered a targeted set of security, data governance, and infrastructure improvements, expanding capabilities while simplifying maintenance. Key features and major fixes delivered this month include: 1) RAM Permissions and RAM Shares Enablement: Extended role-based access with RAM permissions and RAM shares management, enabling scalable, granular cross-account access governance for critical environments. 2) Resource Sharing, Grants, and Lake Formation Permissions: Implemented grantable permissions, resource sharing permissions, resource permissions, and Lake Formation permissions; added runner role permissions; removed an unnecessary S3 bucket grant to reduce exposure and simplify access control. 3) Database Schema and Ireland Infrastructure: Added a new database, defined table schema, and established an Ireland-based environment to meet data residency and compliance requirements. 4) New SFTP Server for LCM Data: Introduced a dedicated SFTP server to support secure LCM data transfers, improving reliability and throughput for data movement. 5) Data Filtering and Cleanup Improvements: Completed a suite of data filtering fixes and cleanup, including distinct filter naming, permissions alignment, and the removal/refactor of legacy data cells filters to reduce edge cases and improve UX. Overall impact: Strengthened security posture with fine-grained access control, improved data governance, and expanded region-specific infrastructure, enabling compliant data handling and faster delivery of data-driven features. Streamlined maintenance through code consolidation and refactoring efforts, while enhancing data transfer capabilities. Technologies/Skills demonstrated: Cloud IAM (RAM), cross-account access management, Lake Formation permissions, data filtering logic, SFTP/secure data transfer, Postgre/SQL schema design (implied by database schema work), region-specific infrastructure deployment, and ongoing code maintainability through modular consolidation.

Activity

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Quality Metrics

Correctness91.4%
Maintainability91.0%
Architecture89.6%
Performance87.2%
AI Usage21.0%

Skills & Technologies

Programming Languages

HCLJSONPythonSQLTerraformYAML

Technical Skills

API DevelopmentAWSAWS GlueAWS IAMAWS IntegrationAWS Lake FormationAWS LambdaAWS Route53AWS S3AWS SSMAWS WAFAccess ControlAthenaAzureCI/CD

Repositories Contributed To

4 repos

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

ministryofjustice/modernisation-platform-environments

Apr 2025 Jun 2026
15 Months active

Languages Used

HCLTerraformPythonSQLJSON

Technical Skills

AWSAWS Lake FormationCloudCloud EngineeringCloud InfrastructureCloud Platform Management

ministryofjustice/cloud-platform-environments

Feb 2026 Jun 2026
4 Months active

Languages Used

TerraformYAMLHCL

Technical Skills

AWSConfiguration ManagementDevOpsInfrastructure as CodeKubernetesAWS IAM

ministryofjustice/modernisation-platform

Oct 2025 May 2026
4 Months active

Languages Used

JSONHCL

Technical Skills

AWS IntegrationCloud ServicesConfiguration ManagementAWSInfrastructure as CodeTerraform

ministryofjustice/staff-identity-idam-entra-infra

Nov 2025 Nov 2025
1 Month active

Languages Used

HCL

Technical Skills

AzureInfrastructure as CodeTerraform