OSGP/open-smart-grid-platform
Nov 2024 – Oct 2025
11 Months active
Languages Used
JavaXMLGherkinProperties
Technical Skills
Configuration ManagementDependency ManagementJavaLoggingSpring BootSpring Security
Harry Middelburg
PROFILE
Harry Middelburg
Harry Middelburg contributed to the OSGP/open-smart-grid-platform repository by delivering platform upgrades, security hardening, and architectural improvements over an 11-month period. He focused on enhancing system stability and maintainability through dependency management, configuration refactoring, and observability enhancements. Using Java, Spring Boot, and XML, Harry implemented features such as dynamic configuration for network components, improved logging for traceability, and constructor-based dependency injection to support testability. His work addressed both feature delivery and bug resolution, including firmware validation and test suite reliability, resulting in a more secure, scalable, and maintainable platform that supports robust deployment and operational workflows.
Overall Statistics
Feature vs Bugs
74%Features
Repository Contributions
49Total
Bugs
6
Commits
49
Features
17
Lines of code
5,019
Activity Months11
Your Network
36 people
Work History
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 — OSGP/open-smart-grid-platform: Focused on improving notification service configurability and maintainability. Delivered a refactor introducing NotificationWebServiceConnectionConfig to consolidate connection details, simplifying dependency injection and improving code organization. Updated notification target URI construction to support more flexible targeting across environments. Commit: 3c58dec8fcc84fe9dbd99473c6a29611739c7984 (Feature/notification service configurable url 2 (#1688)). No major bugs reported this month. Overall impact: reduced configuration complexity, improved maintainability, and set the stage for easier future enhancements to notification delivery. Technologies/skills demonstrated: Java, record-based configuration, dependency injection, URI construction logic, refactoring discipline.
1 Commits • 1 Features
Oct 1, 2025October 2025 — OSGP/open-smart-grid-platform: Focused on improving notification service configurability and maintainability. Delivered a refactor introducing NotificationWebServiceConnectionConfig to consolidate connection details, simplifying dependency injection and improving code organization. Updated notification target URI construction to support more flexible targeting across environments. Commit: 3c58dec8fcc84fe9dbd99473c6a29611739c7984 (Feature/notification service configurable url 2 (#1688)). No major bugs reported this month. Overall impact: reduced configuration complexity, improved maintainability, and set the stage for easier future enhancements to notification delivery. Technologies/skills demonstrated: Java, record-based configuration, dependency injection, URI construction logic, refactoring discipline.
October 2025
September 2025
11 Commits • 2 Features
Sep 1, 2025September 2025: Delivered targeted platform improvements for OSGP/open-smart-grid-platform, focusing on configurability, test reliability, security testability, and maintenance. Key outcomes include enabling dynamic configuration for the simulator network address, stabilizing the test suite with correct connection-refusal handling and test port configurations, externalizing and securing notification service connection parameters, and resolving dependency compatibility issues across HttpCore/HttpClient, Netty, and Artemis.
September 2025
11 Commits • 2 Features
Sep 1, 2025September 2025: Delivered targeted platform improvements for OSGP/open-smart-grid-platform, focusing on configurability, test reliability, security testability, and maintenance. Key outcomes include enabling dynamic configuration for the simulator network address, stabilizing the test suite with correct connection-refusal handling and test port configurations, externalizing and securing notification service connection parameters, and resolving dependency compatibility issues across HttpCore/HttpClient, Netty, and Artemis.
July 2025
1 Commits • 1 Features
Jul 1, 2025Summary for 2025-07: Focused on security hardening of the platform with a targeted upgrade scheduled for July 21. Delivered security upgrades and hardening changes for the OSGP/open-smart-grid-platform repository, captured in commit 9af257bf356c24a3e29a367066718415b65c115c (security-upgrades-2025-07-21). This work strengthens authentication and access controls, improves defense-in-depth, and reduces risk exposure for customers and operators. Overall impact: higher security posture, clearer governance alignment, and a solid foundation for upcoming security milestones. Technologies demonstrated: secure defaults, access control hardening, code review discipline, and frequent incremental commits; collaboration with security and platform teams.
1 Commits • 1 Features
Jul 1, 2025Summary for 2025-07: Focused on security hardening of the platform with a targeted upgrade scheduled for July 21. Delivered security upgrades and hardening changes for the OSGP/open-smart-grid-platform repository, captured in commit 9af257bf356c24a3e29a367066718415b65c115c (security-upgrades-2025-07-21). This work strengthens authentication and access controls, improves defense-in-depth, and reduces risk exposure for customers and operators. Overall impact: higher security posture, clearer governance alignment, and a solid foundation for upcoming security milestones. Technologies demonstrated: secure defaults, access control hardening, code review discipline, and frequent incremental commits; collaboration with security and platform teams.
July 2025
June 2025
3 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for OSGP/open-smart-grid-platform focusing on delivering user-visible enhancements and strengthening the build/deploy process.
June 2025
3 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for OSGP/open-smart-grid-platform focusing on delivering user-visible enhancements and strengthening the build/deploy process.
May 2025
5 Commits • 2 Features
May 1, 2025May 2025 performance summary for OSGP/open-smart-grid-platform: Delivered platform upgrades, architecture refinements, and performance improvements to support stability, security, and scalability. Key work included upgrading core dependencies (Spring Boot 3.3.11, MSAL, Spring CXF descriptor) and refactoring dependency injection to constructor-based DI across the smartmetering domain adapter, plus a Quartz-based resend-notifications optimization to handle large volumes more efficiently. These changes were validated with targeted tests and code-quality work (Sonar/static analysis) across the adapter domain. Result: improved stability, testability, security, and throughput for large notification workloads, with reduced maintenance overhead and smoother upgrades.
5 Commits • 2 Features
May 1, 2025May 2025 performance summary for OSGP/open-smart-grid-platform: Delivered platform upgrades, architecture refinements, and performance improvements to support stability, security, and scalability. Key work included upgrading core dependencies (Spring Boot 3.3.11, MSAL, Spring CXF descriptor) and refactoring dependency injection to constructor-based DI across the smartmetering domain adapter, plus a Quartz-based resend-notifications optimization to handle large volumes more efficiently. These changes were validated with targeted tests and code-quality work (Sonar/static analysis) across the adapter domain. Result: improved stability, testability, security, and throughput for large notification workloads, with reduced maintenance overhead and smoother upgrades.
May 2025
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for OSGP/open-smart-grid-platform focused on delivering observable, secure, and maintainable features across the platform. Key results include end-to-end observability enhancements, security/framework upgrades, and architecture refactoring to improve testability and maintainability. No major defects documented in this period; security posture and reliability were strengthened through dependency upgrades and cleaner DI practices.
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for OSGP/open-smart-grid-platform focused on delivering observable, secure, and maintainable features across the platform. Key results include end-to-end observability enhancements, security/framework upgrades, and architecture refactoring to improve testability and maintainability. No major defects documented in this period; security posture and reliability were strengthened through dependency upgrades and cleaner DI practices.
March 2025
5 Commits • 2 Features
Mar 1, 2025March 2025 — Open Smart Grid Platform delivered targeted security, reliability, and observability improvements across the OSGP repository. Key features delivered include security patches and framework upgrades, enhanced DLMS protocol logging, and improved concurrency handling for device key processing. Major bugs fixed include stability restoration after the Artemis Jakarta client upgrade and deadlock prevention in key processing. These changes collectively improve security posture, system reliability, and operational visibility, enabling faster issue resolution and safer platform upgrades. Tech stack highlights include Spring Boot 3.3.x/6.1.x, DLMS protocol instrumentation, and robust queue-based processing patterns.
5 Commits • 2 Features
Mar 1, 2025March 2025 — Open Smart Grid Platform delivered targeted security, reliability, and observability improvements across the OSGP repository. Key features delivered include security patches and framework upgrades, enhanced DLMS protocol logging, and improved concurrency handling for device key processing. Major bugs fixed include stability restoration after the Artemis Jakarta client upgrade and deadlock prevention in key processing. These changes collectively improve security posture, system reliability, and operational visibility, enabling faster issue resolution and safer platform upgrades. Tech stack highlights include Spring Boot 3.3.x/6.1.x, DLMS protocol instrumentation, and robust queue-based processing patterns.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for OSGP/open-smart-grid-platform: Focused on reinforcing security posture for core infrastructure through configuration hardening across Netty, Spring Boot, and CXF. This aligns with risk reduction, compliance, and audit-readiness across the platform.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for OSGP/open-smart-grid-platform: Focused on reinforcing security posture for core infrastructure through configuration hardening across Netty, Spring Boot, and CXF. This aligns with risk reduction, compliance, and audit-readiness across the platform.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered a strategic platform upgrade for OSGP/open-smart-grid-platform by upgrading the core framework to Spring Boot 3.3.7 and Spring Security 6.2.8. The upgrade enhances security posture, stability, and performance across the stack, addressing known issues and aligning with the roadmap for future releases. The work was implemented via two commits and lays the groundwork for easier future dependency management and ongoing platform hardening.
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered a strategic platform upgrade for OSGP/open-smart-grid-platform by upgrading the core framework to Spring Boot 3.3.7 and Spring Security 6.2.8. The upgrade enhances security posture, stability, and performance across the stack, addressing known issues and aligning with the roadmap for future releases. The work was implemented via two commits and lays the groundwork for easier future dependency management and ongoing platform hardening.
January 2025
December 2024
10 Commits • 1 Features
Dec 1, 2024December 2024 Monthly Summary for OSGP/open-smart-grid-platform Key focus: Platform stability, dependency hygiene, and firmware validation enhancements to bolster security, compatibility, and operational reliability. 1) Key features delivered - Platform stability and dependency management: Upgraded core stack to Spring Boot 3.3.5 with(Spring Data) upgrades and logging/config tweaks; implemented a rollback path for incompatible upgrades and coordinated related dependency updates (e.g., okio-opensaml) with permissible downgrades in supporting libraries to preserve stability. - Dependency and observability improvements: Applied logging/config tweaks and refined upgrade/downgrade strategy to maintain compatibility across modules; included SonarCloud-based quality improvements across the release. 2) Major bugs fixed - Firmware hashing integrity: Fixed leading zeros loss in hex encoding for firmware hashes; ensured correct hash generation and added tests to verify the presence of firmware image magic numbers. - Quality gates: Resolved issues flagged by SonarCloud and stabilized build/tests through targeted commits (e.g., test fixes and small refactors). 3) Overall impact and accomplishments - Business value: Reduced upgrade risk and improved platform stability, security posture, and maintainability; ensured correct firmware integrity verification, which lowers risk of corrupted deployments. - Operational excellence: Improved release health with a robust rollback path and enhanced test coverage, supporting faster, safer deployments in production. 4) Technologies/skills demonstrated - Java/Spring ecosystem: Spring Boot 3.3.5, Spring Data, logging/config management, and dependency management. - Build/QA: Dependency refresh cycles, rollback design, and test automation (JUnit) for firmware hash validation. - Quality tooling: SonarCloud integration to track and remediate quality issues.
December 2024
10 Commits • 1 Features
Dec 1, 2024December 2024 Monthly Summary for OSGP/open-smart-grid-platform Key focus: Platform stability, dependency hygiene, and firmware validation enhancements to bolster security, compatibility, and operational reliability. 1) Key features delivered - Platform stability and dependency management: Upgraded core stack to Spring Boot 3.3.5 with(Spring Data) upgrades and logging/config tweaks; implemented a rollback path for incompatible upgrades and coordinated related dependency updates (e.g., okio-opensaml) with permissible downgrades in supporting libraries to preserve stability. - Dependency and observability improvements: Applied logging/config tweaks and refined upgrade/downgrade strategy to maintain compatibility across modules; included SonarCloud-based quality improvements across the release. 2) Major bugs fixed - Firmware hashing integrity: Fixed leading zeros loss in hex encoding for firmware hashes; ensured correct hash generation and added tests to verify the presence of firmware image magic numbers. - Quality gates: Resolved issues flagged by SonarCloud and stabilized build/tests through targeted commits (e.g., test fixes and small refactors). 3) Overall impact and accomplishments - Business value: Reduced upgrade risk and improved platform stability, security posture, and maintainability; ensured correct firmware integrity verification, which lowers risk of corrupted deployments. - Operational excellence: Improved release health with a robust rollback path and enhanced test coverage, supporting faster, safer deployments in production. 4) Technologies/skills demonstrated - Java/Spring ecosystem: Spring Boot 3.3.5, Spring Data, logging/config management, and dependency management. - Build/QA: Dependency refresh cycles, rollback design, and test automation (JUnit) for firmware hash validation. - Quality tooling: SonarCloud integration to track and remediate quality issues.
November 2024
4 Commits • 2 Features
Nov 1, 2024Month: 2024-11 — Platform maintenance and observability improvements for OSGP/open-smart-grid-platform. Delivered key feature upgrades and improved logging, with positive impact on security, performance, and maintainability.
4 Commits • 2 Features
Nov 1, 2024Month: 2024-11 — Platform maintenance and observability improvements for OSGP/open-smart-grid-platform. Delivered key feature upgrades and improved logging, with positive impact on security, performance, and maintainability.
November 2024
Activity
Loading activity data...
Quality Metrics
Correctness84.4%
Maintainability85.0%
Architecture82.0%
Performance74.6%
AI Usage20.8%
Skills & Technologies
Programming Languages
GherkinJavaPropertiesXML
Technical Skills
API IntegrationBackend DevelopmentBuild ManagementBuild ToolsCI/CDCode QualityConfiguration ManagementCucumberDependency InjectionDependency ManagementFirmware ManagementHexadecimal ConversionIntegration TestingJMSJava
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline