navikt/testnorge
Nov 2024 – Oct 2025
12 Months active
Languages Used
DockerfileGradleJavaJavaScriptYAMLgraphqlKotlinShell
Technical Skills
API DevelopmentAPI IntegrationBackend DevelopmentConfiguration ManagementDeploymentError Handling
Kristen Hærum
PROFILE
Kristen Hærum
Kristen Herum developed and modernized core backend systems for the navikt/testnorge repository, focusing on scalable identity, search, and data management services. He led a transition to a reactive Spring WebFlux architecture, enabling non-blocking I/O and improved concurrency for business-critical APIs. Kristen implemented robust data validation, mapping, and migration strategies using Java and Kotlin, addressing complex requirements such as support for new identifier formats and historical data consistency. His work included API standardization, advanced caching, and integration with external systems, resulting in more reliable, maintainable, and future-proof services. The solutions demonstrated technical depth and careful attention to operational reliability.
Overall Statistics
Feature vs Bugs
69%Features
Repository Contributions
112Total
Bugs
24
Commits
112
Features
54
Lines of code
114,837
Activity Months12
Your Network
246 people
Work History
October 2025
15 Commits • 7 Features
Oct 1, 2025Summary for 2025-10: The month delivered robust CV update flows, comprehensive support for 2032 personal identifiers, enhanced handling of addresses and historical municipalities, and improved user/team representation, all underpinned by stronger concurrency controls. In addition to delivering these features, the period included targeted bug fixes that increased reliability of pension calculations and identity matching, reducing data inconsistencies and erroneous updates. Overall impact: higher reliability of core person-management and HR onboarding flows, improved data quality and governance for identifiers and addresses, and a scalable foundation for future ID formats and internationalization. Technologies and practices demonstrated include retry/backoff strategies, centralized domain interactions, extensive data validation and mapping (including historical data), and soft-locking for concurrency control.
15 Commits • 7 Features
Oct 1, 2025Summary for 2025-10: The month delivered robust CV update flows, comprehensive support for 2032 personal identifiers, enhanced handling of addresses and historical municipalities, and improved user/team representation, all underpinned by stronger concurrency controls. In addition to delivering these features, the period included targeted bug fixes that increased reliability of pension calculations and identity matching, reducing data inconsistencies and erroneous updates. Overall impact: higher reliability of core person-management and HR onboarding flows, improved data quality and governance for identifiers and addresses, and a scalable foundation for future ID formats and internationalization. Technologies and practices demonstrated include retry/backoff strategies, centralized domain interactions, extensive data validation and mapping (including historical data), and soft-locking for concurrency control.
October 2025
September 2025
18 Commits • 7 Features
Sep 1, 2025September 2025 monthly narrative for navikt/testnorge focusing on business value, scalability, and reliability. Delivered major architectural and data-layer improvements, expanded search and integration capabilities, and hardened reliability across critical flows. Highlights include a reactive backend migration with a modernized User Data API, enhanced data access patterns for orders, and NOM/NAV integration in the test environment. Strengthened data integrity for Aareg and incomes, improved pension management support via Alderspensjon enhancements, and reinforced resiliency with retry strategies and timezone consistency. The work reduced error rates, improved UI correctness and time-to-value for stakeholders, and demonstrated strong command of reactive programming, API modernization, and robust integration across services.
September 2025
18 Commits • 7 Features
Sep 1, 2025September 2025 monthly narrative for navikt/testnorge focusing on business value, scalability, and reliability. Delivered major architectural and data-layer improvements, expanded search and integration capabilities, and hardened reliability across critical flows. Highlights include a reactive backend migration with a modernized User Data API, enhanced data access patterns for orders, and NOM/NAV integration in the test environment. Strengthened data integrity for Aareg and incomes, improved pension management support via Alderspensjon enhancements, and reinforced resiliency with retry strategies and timezone consistency. The work reduced error rates, improved UI correctness and time-to-value for stakeholders, and demonstrated strong command of reactive programming, API modernization, and robust integration across services.
August 2025
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08. Highlights include delivering a major architectural refactor for the Dolly backend by adopting a reactive, WebFlux-based stack (Mono/Flux) with non-blocking I/O to improve scalability and responsiveness. This work is anchored by commit 48097a8fca29f311891e50a48258916a70deeb6d (Feature/dolly backend reactive (#3914)) in the navikt/testnorge repository. No explicit major bugs fixed this period; the focus was on feature delivery and platform modernization. Impact includes better concurrency handling, reduced latency under load, and a clearer path for future reactive integrations. Skills demonstrated include reactive programming with WebFlux, non-blocking I/O, architectural refactoring, and implementation discipline that supports scalable growth for business users.
1 Commits • 1 Features
Aug 1, 2025Month: 2025-08. Highlights include delivering a major architectural refactor for the Dolly backend by adopting a reactive, WebFlux-based stack (Mono/Flux) with non-blocking I/O to improve scalability and responsiveness. This work is anchored by commit 48097a8fca29f311891e50a48258916a70deeb6d (Feature/dolly backend reactive (#3914)) in the navikt/testnorge repository. No explicit major bugs fixed this period; the focus was on feature delivery and platform modernization. Impact includes better concurrency handling, reduced latency under load, and a clearer path for future reactive integrations. Skills demonstrated include reactive programming with WebFlux, non-blocking I/O, architectural refactoring, and implementation discipline that supports scalable growth for business users.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered key API standardization for Instdata in the navikt/testnorge repo, establishing a solid foundation for stable integrations and scalable business-facing features. Focused on API consistency, maintainability, and reducing integration friction.
July 2025
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered key API standardization for Instdata in the navikt/testnorge repo, establishing a solid foundation for stable integrations and scalable business-facing features. Focused on API consistency, maintainability, and reducing integration friction.
June 2025
6 Commits • 3 Features
Jun 1, 2025June 2025: Delivered significant updates across the navikt/testnorge repo, including a reactive upgrade for the IdentPool platform, new identity availability endpoint, persistent storage for user search queries, and targeted data-mapping corrections. These work items improved scalability, data quality, and user-facing capabilities, delivering measurable business value: faster identity processing, accurate availability checks, richer search analytics, and cross-service data integrity. Technologies demonstrated include Spring WebFlux, R2DBC, JPA, REST design, and data mapping improvements; dependencies updated to support reactive stacks.
6 Commits • 3 Features
Jun 1, 2025June 2025: Delivered significant updates across the navikt/testnorge repo, including a reactive upgrade for the IdentPool platform, new identity availability endpoint, persistent storage for user search queries, and targeted data-mapping corrections. These work items improved scalability, data quality, and user-facing capabilities, delivering measurable business value: faster identity processing, accurate availability checks, richer search analytics, and cross-service data integrity. Technologies demonstrated include Spring WebFlux, R2DBC, JPA, REST design, and data mapping improvements; dependencies updated to support reactive stacks.
June 2025
May 2025
8 Commits • 5 Features
May 1, 2025May 2025 (navikt/testnorge) – Key business value delivered across Dolly backend data processing, Azure template management, and metadata handling, with targeted bug fixes to improve data integrity and maintainability. Key features delivered: - Etterlatte support in Dolly backend: end-to-end data handling including DTOs, mappers, service integrations, improved error handling, and EtterlatteClient refactor. - Azure bestillinger templates: added retrieval for ALL users and updated getMalBestillingerBrukerId to support Azure multi-tenant usage. - AaregClient robustness: refactor to improve error handling, simplify creation/update of employment relationships, reduce redundancy, and improve logging. - Metadata handling improvements: refine termination time logic and Folkeregistermapping; streamline verge name retrieval. - Backend maintenance: logging and request handling improvements to reduce technical debt and improve maintainability. Major bugs fixed: - Safe deletion of relationships (DeleteRelasjoner) scope: ensure deleting a parent-child relationship only removes the specified relation by introducing person parameter and passing correct DbPerson to services. - Accurate partner retrieval for ForelderBarnRelasjon: ensure chronological parent-child relationship by selecting the partner based on the most recent civil status date when creating a child. Overall impact and accomplishments: - Improved data integrity, reliability, and observability with enhanced multi-tenant support and safer data operations. Reduced risk of unintended deletions and improved visibility into relationship and employment data flows. Established a stronger foundation for future data-model evolution and integrations. Technologies/skills demonstrated: - Java/Kotlin backend, Spring-based services, DTO/Mapper patterns, service integrations, robust error handling, enhanced logging, metadata mapping, and strategic refactoring for maintainability.
May 2025
8 Commits • 5 Features
May 1, 2025May 2025 (navikt/testnorge) – Key business value delivered across Dolly backend data processing, Azure template management, and metadata handling, with targeted bug fixes to improve data integrity and maintainability. Key features delivered: - Etterlatte support in Dolly backend: end-to-end data handling including DTOs, mappers, service integrations, improved error handling, and EtterlatteClient refactor. - Azure bestillinger templates: added retrieval for ALL users and updated getMalBestillingerBrukerId to support Azure multi-tenant usage. - AaregClient robustness: refactor to improve error handling, simplify creation/update of employment relationships, reduce redundancy, and improve logging. - Metadata handling improvements: refine termination time logic and Folkeregistermapping; streamline verge name retrieval. - Backend maintenance: logging and request handling improvements to reduce technical debt and improve maintainability. Major bugs fixed: - Safe deletion of relationships (DeleteRelasjoner) scope: ensure deleting a parent-child relationship only removes the specified relation by introducing person parameter and passing correct DbPerson to services. - Accurate partner retrieval for ForelderBarnRelasjon: ensure chronological parent-child relationship by selecting the partner based on the most recent civil status date when creating a child. Overall impact and accomplishments: - Improved data integrity, reliability, and observability with enhanced multi-tenant support and safer data operations. Reduced risk of unintended deletions and improved visibility into relationship and employment data flows. Established a stronger foundation for future data-model evolution and integrations. Technologies/skills demonstrated: - Java/Kotlin backend, Spring-based services, DTO/Mapper patterns, service integrations, robust error handling, enhanced logging, metadata mapping, and strategic refactoring for maintainability.
April 2025
14 Commits • 8 Features
Apr 1, 2025April 2025 highlights: Delivered end-to-end TPS XML messaging with a React frontend, enabling queue selection, XML input, validation, and submission status; introduced Template Orders Access by User Type with separate retrieval paths and caching refactor; extended Sigrunstub with Summed Tax Basis support; enhanced Dolly search with employment relationships and environment filtering; and strengthened data integrity and robustness (Shared Residence, Vedtakshistorikk, and Testnorge relationship navigation). Additional improvements include structured Dolly tag responses, Dokarkiv handling/restoration, API overview service, and removal of obsolete Person-Search Service. Business value: improved operational efficiency, data integrity, and API clarity. Technologies demonstrated: React frontend, backend services, DTOs/mapping, advanced caching, JSON/date handling, SAF proxy integration, and Docker/YAML-driven API exposure.
14 Commits • 8 Features
Apr 1, 2025April 2025 highlights: Delivered end-to-end TPS XML messaging with a React frontend, enabling queue selection, XML input, validation, and submission status; introduced Template Orders Access by User Type with separate retrieval paths and caching refactor; extended Sigrunstub with Summed Tax Basis support; enhanced Dolly search with employment relationships and environment filtering; and strengthened data integrity and robustness (Shared Residence, Vedtakshistorikk, and Testnorge relationship navigation). Additional improvements include structured Dolly tag responses, Dokarkiv handling/restoration, API overview service, and removal of obsolete Person-Search Service. Business value: improved operational efficiency, data integrity, and API clarity. Technologies demonstrated: React frontend, backend services, DTOs/mapping, advanced caching, JSON/date handling, SAF proxy integration, and Docker/YAML-driven API exposure.
April 2025
March 2025
9 Commits • 6 Features
Mar 1, 2025March 2025 monthly summary focusing on key accomplishments across navikt/testnorge: decommissioned legacy a-melding services, modernized Dolly Search, expanded advanced search capabilities, corrected data mapping and observability, and optimized resource usage to improve stability and efficiency. These efforts reduce maintenance costs, improve data accuracy, and enable faster delivery of business value.
March 2025
9 Commits • 6 Features
Mar 1, 2025March 2025 monthly summary focusing on key accomplishments across navikt/testnorge: decommissioned legacy a-melding services, modernized Dolly Search, expanded advanced search capabilities, corrected data mapping and observability, and optimized resource usage to improve stability and efficiency. These efforts reduce maintenance costs, improve data accuracy, and enable faster delivery of business value.
February 2025
16 Commits • 8 Features
Feb 1, 2025February 2025 monthly summary for navikt/testnorge. Delivered a set of high-impact features and reliability improvements across core domains, emphasizing business value through improved data handling, faster search, more robust job seeker processing, and strengthened system stability. Key outcomes include multi-document handling for Dokarkiv/Histark, job seeker registry integration with standardized classification, Dolly search service with OpenSearch-backed dual indexes and enhanced caching, Alderspensjon data model extensions with async processing improvements, and a targeted stability fix in MetadataTidspunkterService.
16 Commits • 8 Features
Feb 1, 2025February 2025 monthly summary for navikt/testnorge. Delivered a set of high-impact features and reliability improvements across core domains, emphasizing business value through improved data handling, faster search, more robust job seeker processing, and strengthened system stability. Key outcomes include multi-document handling for Dokarkiv/Histark, job seeker registry integration with standardized classification, Dolly search service with OpenSearch-backed dual indexes and enhanced caching, Alderspensjon data model extensions with async processing improvements, and a targeted stability fix in MetadataTidspunkterService.
February 2025
January 2025
13 Commits • 3 Features
Jan 1, 2025January 2025 (navikt/testnorge): Delivered meaningful business value across security, data management, and authentication layers. Implemented a new Dokument data model with migration, restructured Altinn integration, and enhanced authentication UX with BankID and Token-X. Strengthened data integrity during migrations and improved logging privacy.
January 2025
13 Commits • 3 Features
Jan 1, 2025January 2025 (navikt/testnorge): Delivered meaningful business value across security, data management, and authentication layers. Implemented a new Dokument data model with migration, restructured Altinn integration, and enhanced authentication UX with BankID and Token-X. Strengthened data integrity during migrations and improved logging privacy.
December 2024
7 Commits • 3 Features
Dec 1, 2024December 2024 monthly wrap-up for navikt/testnorge focusing on business value and technical achievements. Delivered three core capabilities across the Sykemelding and risk/compliance domains, strengthened access control, and improved data consistency and test coverage.
7 Commits • 3 Features
Dec 1, 2024December 2024 monthly wrap-up for navikt/testnorge focusing on business value and technical achievements. Delivered three core capabilities across the Sykemelding and risk/compliance domains, strengthened access control, and improved data consistency and test coverage.
December 2024
November 2024
4 Commits • 2 Features
Nov 1, 2024November 2024 – Navikt/TestNorge: Two core feature deliveries focused on data integrity and backend resilience, complemented by targeted bug fixes that improve reliability, observability, and API quality. The work reduces data noise, streamlines GraphQL responses, strengthens fault tolerance, and enhances status communications, delivering clear business value to users and operations.
November 2024
4 Commits • 2 Features
Nov 1, 2024November 2024 – Navikt/TestNorge: Two core feature deliveries focused on data integrity and backend resilience, complemented by targeted bug fixes that improve reliability, observability, and API quality. The work reduces data noise, streamlines GraphQL responses, strengthens fault tolerance, and enhances status communications, delivering clear business value to users and operations.
Activity
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Quality Metrics
Correctness83.6%
Maintainability82.6%
Architecture82.0%
Performance73.8%
AI Usage24.0%
Skills & Technologies
Programming Languages
BashCSSDockerfileGradleGroovyHTMLJavaJavaScriptKotlinSQL
Technical Skills
API DevelopmentAPI IntegrationAddress HandlingBackend DevelopmentBatch ProcessingBug FixBug FixingCI/CDCI/CD ConfigurationCI/CD Pipeline ConfigurationCachingCode RefactoringConfiguration ManagementContainerizationDTO Mapping
Repositories Contributed To
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