ministryofjustice/hmpps-dpr-data-product-definitions
Jan 2025 – May 2026
13 Months active
Languages Used
JSONN/ASQLShellYAMLPython
Technical Skills
AWS DynamoDBCI/CDData EngineeringData ModelingDatabase ManagementGitHub Actions
djcostin
PROFILE
Djcostin
Over 13 months, contributed to the ministryofjustice/hmpps-dpr-data-product-definitions repository by designing and delivering 21 features and resolving critical bugs to enhance data product reliability. Focused on backend development, data modeling, and reporting, the work included building automated scheduling, refining SQL queries for reporting accuracy, and implementing JSON schema enhancements for data governance. Leveraged Python, SQL, and Shell scripting to optimize data pipelines, improve data quality, and support production deployments. Collaborated on schema design, configuration management, and CI/CD workflows, ensuring robust data accessibility and traceability. The engineering approach emphasized maintainability, cross-team collaboration, and production-ready, auditable data solutions.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
39Total
Bugs
3
Commits
39
Features
21
Lines of code
1,670,980
Activity Months13
Your Network
265 peopleSame Organization
@digital.justice.gov.uk260
Work History
May 2026
3 Commits • 2 Features
May 1, 2026May 2026: Delivered production-ready enhancements in the DPR data product definitions, focusing on data accuracy, reporting capabilities, and search usability. Achieved production deployments and demonstrated strong cross-team collaboration. No major bugs fixed this month; all changes are tracked through explicit commits and releases.
3 Commits • 2 Features
May 1, 2026May 2026: Delivered production-ready enhancements in the DPR data product definitions, focusing on data accuracy, reporting capabilities, and search usability. Achieved production deployments and demonstrated strong cross-team collaboration. No major bugs fixed this month; all changes are tracked through explicit commits and releases.
May 2026
April 2026
3 Commits • 2 Features
Apr 1, 2026April 2026 monthly summary for the HM Prison and Probation Service data product definitions repository. Delivered JSON-based prison data reporting definitions with governance enhancements and enhanced offender identification, and achieved production deployment of updated artifacts. Focused on strengthening data accessibility, governance, and reporting accuracy to support faster, more reliable decision-making.
April 2026
3 Commits • 2 Features
Apr 1, 2026April 2026 monthly summary for the HM Prison and Probation Service data product definitions repository. Delivered JSON-based prison data reporting definitions with governance enhancements and enhanced offender identification, and achieved production deployment of updated artifacts. Focused on strengthening data accessibility, governance, and reporting accuracy to support faster, more reliable decision-making.
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026: Focused CSRA reporting improvements in ministryofjustice/hmpps-dpr-data-product-definitions. Implemented DPR2-2487 enhancements to extend support for all cell locations (updated query and prompt descriptions) and added case-insensitive queries for wings and cells to improve user input flexibility and data accuracy. Two commits delivered, with co-authorship, reflecting collaboration and code quality improvements across the data product definitions repository.
2 Commits • 1 Features
Feb 1, 2026February 2026: Focused CSRA reporting improvements in ministryofjustice/hmpps-dpr-data-product-definitions. Implemented DPR2-2487 enhancements to extend support for all cell locations (updated query and prompt descriptions) and added case-insensitive queries for wings and cells to improve user input flexibility and data accuracy. Two commits delivered, with co-authorship, reflecting collaboration and code quality improvements across the data product definitions repository.
February 2026
January 2026
4 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for the ministryofjustice/hmpps-dpr-data-product-definitions repository. Delivered three feature enhancements focused on data visibility, reporting accuracy, and reallocations analytics, with targeted bug fixes to improve alert reliability and production readiness. Demonstrated strong collaboration and end-to-end delivery from design to prod deployment.
January 2026
4 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for the ministryofjustice/hmpps-dpr-data-product-definitions repository. Delivered three feature enhancements focused on data visibility, reporting accuracy, and reallocations analytics, with targeted bug fixes to improve alert reliability and production readiness. Demonstrated strong collaboration and end-to-end delivery from design to prod deployment.
December 2025
5 Commits • 2 Features
Dec 1, 2025December 2025: Focused on strengthening data quality, reliability, and data-model maturity in the DPR data product definitions. Delivered Visit Management System enhancements to improve data retrieval accuracy, prevent visitor duplicates, refine access handling, and refactor visitor restrictions. Implemented ORS data model updates adding NOMS numbers with release detail and a Diet column in the alpha list to capture dietary information by location. These changes improve data quality, compliance traces, and location-based insights, enabling faster decision-making and more accurate reporting across operations.
5 Commits • 2 Features
Dec 1, 2025December 2025: Focused on strengthening data quality, reliability, and data-model maturity in the DPR data product definitions. Delivered Visit Management System enhancements to improve data retrieval accuracy, prevent visitor duplicates, refine access handling, and refactor visitor restrictions. Implemented ORS data model updates adding NOMS numbers with release detail and a Diet column in the alpha list to capture dietary information by location. These changes improve data quality, compliance traces, and location-based insights, enabling faster decision-making and more accurate reporting across operations.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary: Delivered a substantive data-model enhancement and reporting expansion in the hmpps-dpr-data-product-definitions repository to advance prison movements analytics. Implemented new fields (cell, sentence_type, sentence_start_date, and sed) in the prison receptions/discharges data model and introduced new reporting datasets for movements and receptions with detailed offence information. This work improves data accessibility, consistency, and governance for operations and analytics. The changes were committed under DPR2-2372 (9c07808248f57c4e6a6048940266d0885b10a7ed) and co-authored by djcostin, reflecting a collaborative PR effort (#404).
November 2025
1 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary: Delivered a substantive data-model enhancement and reporting expansion in the hmpps-dpr-data-product-definitions repository to advance prison movements analytics. Implemented new fields (cell, sentence_type, sentence_start_date, and sed) in the prison receptions/discharges data model and introduced new reporting datasets for movements and receptions with detailed offence information. This work improves data accessibility, consistency, and governance for operations and analytics. The changes were committed under DPR2-2372 (9c07808248f57c4e6a6048940266d0885b10a7ed) and co-authored by djcostin, reflecting a collaborative PR effort (#404).
October 2025
3 Commits • 2 Features
Oct 1, 2025Month: 2025-10. Concise monthly summary for the ministryofjustice/hmpps-dpr-data-product-definitions repository focusing on offender management data product definitions. Delivered three focused items in Oct 2025 with direct business value: enhanced reporting capabilities, deployment readiness, and data integrity. The work demonstrates disciplined, production-ready changes with clear traceability to tickets and commits.
3 Commits • 2 Features
Oct 1, 2025Month: 2025-10. Concise monthly summary for the ministryofjustice/hmpps-dpr-data-product-definitions repository focusing on offender management data product definitions. Delivered three focused items in Oct 2025 with direct business value: enhanced reporting capabilities, deployment readiness, and data integrity. The work demonstrates disciplined, production-ready changes with clear traceability to tickets and commits.
October 2025
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025: Key features delivered in ministryofjustice/hmpps-dpr-data-product-definitions focused on improving financial reporting accuracy, consistency, and auditability. Delivered MIS Finance Audit Log Enhancements and MIS Summary of Receipts and Payments Totals, consolidating updates to the MIS View Finance Audit Log and updating report definitions to include aggregated values. These changes enable more reliable month-end closes, faster decision-making, and stronger data governance for DPR data products.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025: Key features delivered in ministryofjustice/hmpps-dpr-data-product-definitions focused on improving financial reporting accuracy, consistency, and auditability. Delivered MIS Finance Audit Log Enhancements and MIS Summary of Receipts and Payments Totals, consolidating updates to the MIS View Finance Audit Log and updating report definitions to include aggregated values. These changes enable more reliable month-end closes, faster decision-making, and stronger data governance for DPR data products.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focusing on key accomplishments and business impact for the DPR data product definitions work.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focusing on key accomplishments and business impact for the DPR data product definitions work.
June 2025
May 2025
7 Commits • 3 Features
May 1, 2025May 2025 DPR data-product-definitions: Delivered key enhancements across prisoner data quality, ORS security categorisation, and national alerts reporting. Implemented data completeness for missing PNC and CRO identifiers, introduced granular security categorisation controls, stabilized reporting and joins, and added an alerts dropdown with alert_code-based filtering to the national alerts report. These changes improve data accuracy, security/compliance, and reporting reliability for DPR data products.
May 2025
7 Commits • 3 Features
May 1, 2025May 2025 DPR data-product-definitions: Delivered key enhancements across prisoner data quality, ORS security categorisation, and national alerts reporting. Implemented data completeness for missing PNC and CRO identifiers, introduced granular security categorisation controls, stabilized reporting and joins, and added an alerts dropdown with alert_code-based filtering to the national alerts report. These changes improve data accuracy, security/compliance, and reporting reliability for DPR data products.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for ministryofjustice/hmpps-dpr-data-product-definitions. Focused on reliability improvements in the data product definitions pipeline. No new features released this month; one significant bug fix delivered in the directory cleaning component to prevent errors.
1 Commits
Apr 1, 2025April 2025 monthly summary for ministryofjustice/hmpps-dpr-data-product-definitions. Focused on reliability improvements in the data product definitions pipeline. No new features released this month; one significant bug fix delivered in the directory cleaning component to prevent errors.
April 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Delivered automated data quality scheduling and time-series dataset schema enhancements for ministryofjustice/hmpps-dpr-data-product-definitions. Introduced a dataset-level scheduling flag, extended time-series definitions with data quality metrics, scheduling attributes, a test historical dataset, and a current-date schema field to strengthen governance and usability of data product definitions.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Delivered automated data quality scheduling and time-series dataset schema enhancements for ministryofjustice/hmpps-dpr-data-product-definitions. Introduced a dataset-level scheduling flag, extended time-series definitions with data quality metrics, scheduling attributes, a test historical dataset, and a current-date schema field to strengthen governance and usability of data product definitions.
January 2025
4 Commits • 1 Features
Jan 1, 2025January 2025 performance summary for ministryofjustice/hmpps-dpr-data-product-definitions: Delivered scheduling support for DPR data products with end-to-end state propagation, enhanced test reporting, and DynamoDB publish integration. This work improves automation, reliability, and visibility of scheduled data products, enabling safer production deployments and better traceability across workflows.
4 Commits • 1 Features
Jan 1, 2025January 2025 performance summary for ministryofjustice/hmpps-dpr-data-product-definitions: Delivered scheduling support for DPR data products with end-to-end state propagation, enhanced test reporting, and DynamoDB publish integration. This work improves automation, reliability, and visibility of scheduled data products, enabling safer production deployments and better traceability across workflows.
January 2025
Activity
Loading activity data...
Quality Metrics
Correctness84.6%
Maintainability83.6%
Architecture81.6%
Performance79.4%
AI Usage24.6%
Skills & Technologies
Programming Languages
JSONN/APythonSQLShellYAML
Technical Skills
API developmentAWS DynamoDBBackend DevelopmentCI/CDConfiguration ManagementData AnalysisData AuditingData EngineeringData ManagementData ModelingDatabase DesignDatabase DevelopmentDatabase ManagementDevOpsGitHub Actions
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline