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Casper-Olsen

PROFILE

Casper-olsen

Over seven months, Cabol developed and maintained features across Energinet-DataHub’s energy-origin and greenforce-frontend repositories, focusing on robust backend systems and data integrity. He delivered APIs for measurement data aggregation, implemented CVR validation, and enhanced token management, using C#, ASP.NET Core, and TypeScript. Cabol refactored data models and mapping layers to support evolving business needs, such as string-based MeteringPoint IDs and improved contract governance. His work emphasized maintainability through codebase hygiene, comprehensive testing, and documentation updates. By addressing authentication, error handling, and performance optimization, Cabol ensured reliable integrations and smoother onboarding for both internal teams and external users.

Overall Statistics

Feature vs Bugs

54%Features

Repository Contributions

66Total
Bugs
19
Commits
66
Features
22
Lines of code
17,469
Activity Months7

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 — Delivered MeteringPoint ID string support in greenforce-frontend, enabling handling of string-based IDs and updating DTOs/mappers to support both legacy long IDs and new string formats. This improves data interoperability with external systems and sets groundwork for future ID format variations. Commit: 8c1e0dbb1bb79711915ca9752ee0138a7b86ad9c.

January 2026

6 Commits • 2 Features

Jan 1, 2026

January 2026: Focused on stabilizing core data flows and improving diagnostics in greenforce-frontend. Delivered two major areas: (1) ElectricityMarket client upgrade to a newer version for an enhanced debug endpoint, enabling quicker issue diagnosis and reduced integration friction; (2) MeteringPoint data model and mapping enhancements, introducing a common MeteringPoint DTO, refactoring the mapper/DTO, starting IDs at 1,000,000, implementing null-safe mappings, and refining customer relation type mapping. Added tests to verify mappings and prevent regressions. These changes reduce data inconsistencies in downstream analytics and improve developer velocity for onboarding changes. Technologies demonstrated: frontend TypeScript architecture, mapping layer refactoring, test-driven enhancements, and robust handling of null values, with emphasis on business value: more reliable data, faster debugging, and safer mappings.

December 2025

2 Commits • 2 Features

Dec 1, 2025

December 2025: Delivered debugging enhancements for metering points in the electricity market and upgraded core market client to improve data integrity and performance. Key outcomes include a new debug query with valid date ranges, GraphQL query refinements to boost debugging data accuracy, and upgrading Energinet.DataHub.ElectricityMarket.Client to 1.37.0. These changes enhance data quality, accelerate issue triage, and strengthen market-data integration for downstream systems.

August 2025

8 Commits • 2 Features

Aug 1, 2025

2025-08 Monthly Summary — Delivered governance, security, and developer-experience improvements across energy-origin and greenforce-frontend. Key features include admin contract management, trial-only enforcement, internal authorization with metering points, and API explorer filtering of internal endpoints. Codebase maintenance standardized line endings and refreshed documentation. Frontend communications were updated to announce the LIVE environment shutdown and migration to TEST with details on the login page. These changes strengthen contract governance, improve security posture, reduce API explorer noise, and enhance cross-team maintainability, enabling smoother transitions for users and faster, safer development cycles.

July 2025

27 Commits • 9 Features

Jul 1, 2025

Monthly summary for 2025-07: Focused on strengthening token management reliability, governance, and reporting fidelity across energy-origin, wallet, and frontend components. Delivered functional token expiration handling, improved logging discipline, production-readiness fixes for contracts, performance optimizations, and enhanced observability in reporting.

June 2025

12 Commits • 5 Features

Jun 1, 2025

June 2025 Highlights for Energinet-DataHub/energy-origin: Delivered a new measurement data API with aggregation and mock data support, including refactors, logging, and tests to align with the API; fixed critical MeasurementsSyncService DateTo calculation bug; stabilized authentication by reintroducing the login type claim; added IsTrial flag and updated trial vs non-trial authorization and onboarding; enhanced token lifecycle with DataHub3 client refresh and expiration logging. These changes deliver improved data access reliability, security, onboarding clarity for trial customers, and stronger test coverage.

May 2025

10 Commits • 1 Features

May 1, 2025

Concise monthly summary for May 2025 focusing on business value, data integrity, and maintainability across two repos (Energinet-DataHub/energy-origin and project-origin/wallet). Delivered user-facing data quality improvements, robust error handling, and foundational refactors that reduce technical debt and improve forward-looking scalability.

Activity

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Quality Metrics

Correctness89.2%
Maintainability88.2%
Architecture86.0%
Performance82.4%
AI Usage21.6%

Skills & Technologies

Programming Languages

C#Git AttributesGraphQLHTMLJavaJavaScriptMarkdownRESTSQLTypeScript

Technical Skills

.NETAPI DevelopmentAPI IntegrationAPI SecurityAPI developmentAPI integrationASP.NET CoreAuthenticationBackend DevelopmentBackground ServicesC#CI/CDCode OrganizationConfiguration ManagementData Handling

Repositories Contributed To

3 repos

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

Energinet-DataHub/energy-origin

May 2025 Aug 2025
4 Months active

Languages Used

C#HTMLJavaScriptSQLTypeScriptcshtmlRESTXML

Technical Skills

API DevelopmentAPI IntegrationASP.NET CoreBackend DevelopmentC#Code Organization

Energinet-DataHub/greenforce-frontend

Jul 2025 Feb 2026
5 Months active

Languages Used

JavaScriptTypeScriptC#GraphQL

Technical Skills

API IntegrationFrontend DevelopmentLocalizationC#GraphQLNuGet package management

project-origin/wallet

May 2025 Jul 2025
2 Months active

Languages Used

C#SQL

Technical Skills

Backend DevelopmentDistributed SystemsEvent-Driven ArchitectureMassTransitDatabase OptimizationQuery Optimization

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