
Lance Munslow engineered scalable scheduling, allocation, and attendance management features for the ministryofjustice/hmpps-activities-management-api, focusing on reliability and operational efficiency. He introduced asynchronous SQS-based background processing for allocations and attendances, enabling robust, distributed workflows across multiple prison sites. Leveraging Kotlin, Java, and AWS SQS, Lance modernized data models to support DPS location UUIDs, enhanced API validation, and improved data integrity for prisoner movement and scheduling. His work included CI/CD modernization with GitHub Actions, Docker build optimizations, and observability improvements, resulting in resilient deployments and streamlined release cycles. The solutions addressed real-world operational constraints and evolving business requirements.

October 2025 performance summary: Delivered critical backend modernization and reliability improvements across HM Prison & Probation Service platforms, with a focus on scalable background processing, live-location enablement, and robust CI/CD/security. Key business outcomes include asynchronous allocation workflows reducing processing delays, expanded live-location coverage for prisons, improved data validation and UX for waiting lists, and strengthened testing/integration pipelines. Cross-repo changes supported feature toggles and UI access controls, while documentation keep dependencies transparent. These efforts collectively increase throughput, operational visibility, and time-to-value for product teams and end users.
October 2025 performance summary: Delivered critical backend modernization and reliability improvements across HM Prison & Probation Service platforms, with a focus on scalable background processing, live-location enablement, and robust CI/CD/security. Key business outcomes include asynchronous allocation workflows reducing processing delays, expanded live-location coverage for prisons, improved data validation and UX for waiting lists, and strengthened testing/integration pipelines. Cross-repo changes supported feature toggles and UI access controls, while documentation keep dependencies transparent. These efforts collectively increase throughput, operational visibility, and time-to-value for product teams and end users.
September 2025 performance summary focusing on delivering business value through stability, scale, and modernization across core platforms. Key outcomes include a memory management fix for ended jobs, a multi-location rollout of Activities and Appointments, a shift to modern CI/CD pipelines, enhanced observability and alerting, and location-specific feature toggles for Whereabouts UI. The month also solidified data persistence patterns with Redis-backed journey data and improved integration testing and release hygiene.
September 2025 performance summary focusing on delivering business value through stability, scale, and modernization across core platforms. Key outcomes include a memory management fix for ended jobs, a multi-location rollout of Activities and Appointments, a shift to modern CI/CD pipelines, enhanced observability and alerting, and location-specific feature toggles for Whereabouts UI. The month also solidified data persistence patterns with Redis-backed journey data and improved integration testing and release hygiene.
August 2025 performance summary for HMPS projects focused on delivering scalable scheduling and allocation capabilities, strengthening data integrity, and improving development and deployment efficiency across multiple repositories. The month saw the rollout of SQS-based distributed processing for creating schedule instances and ending allocations, alongside production enablement and robust testing including Dead Letter Queue handling. Data integrity improvements fixed prisoner status logging and ensured allocation endDates are correctly updated for planned deallocations. Eastwood go-live readiness was achieved through prison configuration updates and targeted feature toggles for Eastwood Park. Build/CI and Docker optimizations were implemented to align with Gradle 9, accelerate startup, and simplify image layering. API evolution and cleanup reduced technical debt by deprecating internalLocationId, removing unnecessary endpoints, and consolidating lifecycle changes (including removal of deprecated jobs and permanent removal of the Uncancel Multiple Sessions feature toggle).
August 2025 performance summary for HMPS projects focused on delivering scalable scheduling and allocation capabilities, strengthening data integrity, and improving development and deployment efficiency across multiple repositories. The month saw the rollout of SQS-based distributed processing for creating schedule instances and ending allocations, alongside production enablement and robust testing including Dead Letter Queue handling. Data integrity improvements fixed prisoner status logging and ensured allocation endDates are correctly updated for planned deallocations. Eastwood go-live readiness was achieved through prison configuration updates and targeted feature toggles for Eastwood Park. Build/CI and Docker optimizations were implemented to align with Gradle 9, accelerate startup, and simplify image layering. API evolution and cleanup reduced technical debt by deprecating internalLocationId, removing unnecessary endpoints, and consolidating lifecycle changes (including removal of deprecated jobs and permanent removal of the Uncancel Multiple Sessions feature toggle).
July 2025 performance summary highlighting business value and technical achievements across HMPS services, with a focus on interoperability, regional enablement, and reliability.
July 2025 performance summary highlighting business value and technical achievements across HMPS services, with a focus on interoperability, regional enablement, and reliability.
June 2025: Delivered multiple production go-lives and data integrity enhancements across HMPS platforms, enabling new sites and improving scheduling reliability. Key outcomes include live deployments for Manchester, Lincoln, Swansea, Stocken, and Stoke Heath; activation of activities and appointments for Manchester, Stoke Heath, Lincoln, and Swansea; added DPS location UUIDs to appointments and appointment sets with a dedicated fix job; implemented targeted UI gating to reduce exposure in non-production environments; and foundational changes to scheduling models and CI/CD that improve flexibility, reliability, and faster iteration.
June 2025: Delivered multiple production go-lives and data integrity enhancements across HMPS platforms, enabling new sites and improving scheduling reliability. Key outcomes include live deployments for Manchester, Lincoln, Swansea, Stocken, and Stoke Heath; activation of activities and appointments for Manchester, Stoke Heath, Lincoln, and Swansea; added DPS location UUIDs to appointments and appointment sets with a dedicated fix job; implemented targeted UI gating to reduce exposure in non-production environments; and foundational changes to scheduling models and CI/CD that improve flexibility, reliability, and faster iteration.
Concise monthly summary for 2025-05 focusing on key business value delivered through feature enablement, bug fixes, and foundational reliability across the HMPS activities management stack. Highlights include Go-Live for Woodhill and Whatton with Activities & Appointments, enhanced attendance and cancellation logic, a new Advance Attendances API with history logging for payments, targeted data filtering to improve move lists, and security/reliability hardening.
Concise monthly summary for 2025-05 focusing on key business value delivered through feature enablement, bug fixes, and foundational reliability across the HMPS activities management stack. Highlights include Go-Live for Woodhill and Whatton with Activities & Appointments, enhanced attendance and cancellation logic, a new Advance Attendances API with history logging for payments, targeted data filtering to improve move lists, and security/reliability hardening.
Concise monthly summary for April 2025 highlighting key features, critical fixes, impact, and technologies demonstrated across repositories. Emphasizes business value, reliability, and performance improvements with concrete delivery details.
Concise monthly summary for April 2025 highlighting key features, critical fixes, impact, and technologies demonstrated across repositories. Emphasizes business value, reliability, and performance improvements with concrete delivery details.
March 2025 highlights: Delivered end-to-end enhancements across the HM Prison Activities Management stack, delivering measurable business value in scheduling accuracy, data integrity, and system resilience. Key features include Attendance System Enhancements with mass attendance links and improved attendee search; DPS Location UUID migration with dpsLocationId, plus location handling improvements; Movement List architecture shift to Redis-backed session storage; DPR frontend updates and a regression fix; LCI data integration and related API endpoints; bulk cancellation of scheduled activities; retry mechanisms for external API calls; environment parity across PREPROD/PROD; activation of ISI/BRI; HMP Leicester UI disablements; and improvements to data quality by reporting invalid locations.
March 2025 highlights: Delivered end-to-end enhancements across the HM Prison Activities Management stack, delivering measurable business value in scheduling accuracy, data integrity, and system resilience. Key features include Attendance System Enhancements with mass attendance links and improved attendee search; DPS Location UUID migration with dpsLocationId, plus location handling improvements; Movement List architecture shift to Redis-backed session storage; DPR frontend updates and a regression fix; LCI data integration and related API endpoints; bulk cancellation of scheduled activities; retry mechanisms for external API calls; environment parity across PREPROD/PROD; activation of ISI/BRI; HMP Leicester UI disablements; and improvements to data quality by reporting invalid locations.
February 2025 monthly summary for the HMPS Activities Management portfolio. Delivered user-focused appointment features, strengthened data integrity across scheduling and migrations, expanded location data integration, and improved reporting, while enhancing CI/CD reliability and code quality across two repos. Business value was realized through more accurate data, better UX, and faster, more reliable releases.
February 2025 monthly summary for the HMPS Activities Management portfolio. Delivered user-focused appointment features, strengthened data integrity across scheduling and migrations, expanded location data integration, and improved reporting, while enhancing CI/CD reliability and code quality across two repos. Business value was realized through more accurate data, better UX, and faster, more reliable releases.
January 2025 performance summary for HM Prison Activities Management and API: Key features delivered - Appointment Attendance Management Improvements: UI and data-flow enhancements for viewing/editing attendance, including search, location filtering, clashes column, and improved user feedback; fixes to attendance links and UI consistency across the attendance view. - Multi-Appointment Attendance: Enables recording attendance across multiple appointments with a rollout toggle, alignment of validation and UI to multi-appointment use cases, deployment/config changes, and end-to-end Cypress tests. - Performance improvements for reporting and data export: Refactored reporting/data export to streaming processing, memory-efficient CSV conversion, and streaming exports to S3 for large datasets. Major bugs fixed - Production Live Config Cleanup: Removed erroneous prison codes from ACTIVITES_LIVE and APPOINTMENTS_LIVE in production Helm values to stabilize live configurations. - UI/workflow fixes in attendance: resolved issues around record attendance link, and UI glitches in mark attendance flows to ensure reliable data entry. Overall impact and accomplishments - Delivered scalable attendance workflows (including multi-appointment scenarios) with improved data accuracy, searchability, and feedback for end users; reduced operational risk through safer production config and improved data pipelines. - Strengthened release reliability with rollout toggles and automated tests; enhanced platform performance and memory efficiency for large reporting tasks. - Enabled downstream notifications for status changes via feature flags in API layer, improving operational awareness. Technologies/skills demonstrated - Frontend UX improvements, data-flow design, and feature flag-driven rollout strategies - End-to-end testing with Cypress for multi-appointment scenarios - Streaming data processing and memory optimization for reporting/export workflows - Build system hardening (environment asset separation, env vars handling) and enhanced CI/CD readiness - Helm-based production config management and safe production changes
January 2025 performance summary for HM Prison Activities Management and API: Key features delivered - Appointment Attendance Management Improvements: UI and data-flow enhancements for viewing/editing attendance, including search, location filtering, clashes column, and improved user feedback; fixes to attendance links and UI consistency across the attendance view. - Multi-Appointment Attendance: Enables recording attendance across multiple appointments with a rollout toggle, alignment of validation and UI to multi-appointment use cases, deployment/config changes, and end-to-end Cypress tests. - Performance improvements for reporting and data export: Refactored reporting/data export to streaming processing, memory-efficient CSV conversion, and streaming exports to S3 for large datasets. Major bugs fixed - Production Live Config Cleanup: Removed erroneous prison codes from ACTIVITES_LIVE and APPOINTMENTS_LIVE in production Helm values to stabilize live configurations. - UI/workflow fixes in attendance: resolved issues around record attendance link, and UI glitches in mark attendance flows to ensure reliable data entry. Overall impact and accomplishments - Delivered scalable attendance workflows (including multi-appointment scenarios) with improved data accuracy, searchability, and feedback for end users; reduced operational risk through safer production config and improved data pipelines. - Strengthened release reliability with rollout toggles and automated tests; enhanced platform performance and memory efficiency for large reporting tasks. - Enabled downstream notifications for status changes via feature flags in API layer, improving operational awareness. Technologies/skills demonstrated - Frontend UX improvements, data-flow design, and feature flag-driven rollout strategies - End-to-end testing with Cypress for multi-appointment scenarios - Streaming data processing and memory optimization for reporting/export workflows - Build system hardening (environment asset separation, env vars handling) and enhanced CI/CD readiness - Helm-based production config management and safe production changes
December 2024: Reliability, data integrity, and API scalability improvements across two repositories (hmpps-activities-management-api and hmpps-activities-management). Delivered resilience for Prison API, batch appointment endpoints and multi-appointment attendance management, and attendance/status enhancements, with targeted data accuracy fixes to improve reporting fidelity. Key features delivered include Prison API resilience improvements (retry mechanism and shorter timeout), appointment data API enhancements (batch get for multiple appointments and bulk attendance updates), multi-appointment attendance management (feature toggle, new endpoints, and UI/navigation refinements), and batch enabling of new prisons in preproduction. Major bugs fixed include activity data accuracy improvements (location filtering to include only actual visits and corrected v_activity_summary counts) and proper labeling of events in Changes in Circumstances (cell moves and related updates). These changes collectively improve system reliability, reporting accuracy, and operational efficiency, enabling safer production deployments and scalable batch operations. Technologies/skills demonstrated include retry patterns and timeout tuning, feature toggles, batch API design, data quality assurance, UI integration, and test infrastructure improvements.
December 2024: Reliability, data integrity, and API scalability improvements across two repositories (hmpps-activities-management-api and hmpps-activities-management). Delivered resilience for Prison API, batch appointment endpoints and multi-appointment attendance management, and attendance/status enhancements, with targeted data accuracy fixes to improve reporting fidelity. Key features delivered include Prison API resilience improvements (retry mechanism and shorter timeout), appointment data API enhancements (batch get for multiple appointments and bulk attendance updates), multi-appointment attendance management (feature toggle, new endpoints, and UI/navigation refinements), and batch enabling of new prisons in preproduction. Major bugs fixed include activity data accuracy improvements (location filtering to include only actual visits and corrected v_activity_summary counts) and proper labeling of events in Changes in Circumstances (cell moves and related updates). These changes collectively improve system reliability, reporting accuracy, and operational efficiency, enabling safer production deployments and scalable batch operations. Technologies/skills demonstrated include retry patterns and timeout tuning, feature toggles, batch API design, data quality assurance, UI integration, and test infrastructure improvements.
November 2024: Focused on reducing technical debt, enabling faster feature delivery, and strengthening test and security foundations across the HMPS Activities Management suite. Delivered production-ready feature flags, modernized API clients, improved data quality, and robust CI/testing with LocalStack and security scanning to lower risk and shorten feedback cycles.
November 2024: Focused on reducing technical debt, enabling faster feature delivery, and strengthening test and security foundations across the HMPS Activities Management suite. Delivered production-ready feature flags, modernized API clients, improved data quality, and robust CI/testing with LocalStack and security scanning to lower risk and shorten feedback cycles.
October 2024 performance highlights across two repositories. Delivered features and fixes that improve data accessibility, data quality, and reliability, while strengthening testing and release practices. Summary focuses on business value delivered to downstream services, operators, and end users.
October 2024 performance highlights across two repositories. Delivered features and fixes that improve data accessibility, data quality, and reliability, while strengthening testing and release practices. Summary focuses on business value delivered to downstream services, operators, and end users.
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