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Jakob Havstein Eriksen

PROFILE

Jakob Havstein Eriksen

Jakob Havstein Eriksen developed and maintained core health-domain services in the navikt/helse-spesialist repository, focusing on robust backend systems for case management and data processing. He engineered scalable APIs and optimized database interactions using Kotlin, SQL, and GraphQL, addressing performance bottlenecks and improving data integrity. Jakob refactored legacy data access layers, introduced audit logging for PostgreSQL, and streamlined CI/CD pipelines to enhance deployment reliability. His work included implementing feature toggles, improving observability through structured logging, and modernizing test infrastructure. By consolidating data models and simplifying API surfaces, Jakob delivered maintainable solutions that improved reliability, security, and developer experience across the platform.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

472Total
Bugs
64
Commits
472
Features
189
Lines of code
26,974
Activity Months13

Work History

October 2025

3 Commits • 3 Features

Oct 1, 2025

October 2025 — Focus on strengthening security observability for PostgreSQL via audit logging across core services. Delivered standardized production audit logging configurations in three repositories, improving traceability, compliance readiness, and incident response capabilities.

September 2025

11 Commits • 6 Features

Sep 1, 2025

September 2025: Delivered notable performance improvements, data quality enhancements, and security/maintainability upgrades across four repositories. Key outcomes include faster treatment data retrieval, cleaner database schema, improved observability and test maintenance, user-facing terminology refinements, robust PDL schema versioning, and modernized CI/CD pipelines with dependency upgrades. These efforts reduce latency for complex datasets, lower maintenance costs, and strengthen security and reliability, delivering tangible business value.

August 2025

9 Commits • 4 Features

Aug 1, 2025

August 2025 monthly summary for NAV IT development across two repositories (navikt/helse-spesialist and navikt/helse-sparkelapper). Delivered concrete features and fixes with measurable business value: security hardening, data-model simplification, improved search usability, and readiness for re-reading of backdated sick notes.

July 2025

16 Commits • 7 Features

Jul 1, 2025

July 2025: Delivered reliability improvements, performance optimizations, and tooling modernization across multiple health-domain repositories. Implemented a critical bug fix in the approval workflow, accelerated data access paths, and consolidated build/tooling, while also tackling data integrity and cost-efficiency improvements.

June 2025

38 Commits • 11 Features

Jun 1, 2025

June 2025 monthly work summary for NHS Health apps portfolio. The month delivered high-impact features and stability improvements across three repositories: helse-spesialist, helse-sparkelapper, and helse-speil. The work focused on simplifying data models and API surfaces, upgrading task feeds, reinforcing data integrity, and raising production readiness through deployment/config enhancements and stronger test infrastructure. Business value was accelerated by reducing maintenance overhead, enabling faster feature delivery, and increasing reliability for frontline users (case managers, clinicians, and decision makers).

May 2025

14 Commits • 5 Features

May 1, 2025

May 2025 performance summary: Across four repositories, delivered cross-cutting improvements focused on stability, data consistency, and user experience. Key features include: NAIS build/config stability improvements in helse-sparkelapper, automatic Infotrygd data refresh and history UI enhancements in helse-speil, and a Spesidaler cleanup activation in helse-spleis. Major bug fix: SlettPersonRiver now enforces preconditions so only events named 'slett_person' are processed, boosting robustness. Naming clarity improved by renaming oppdaterSnapshot to oppdaterPersondata in helse-spesialist. Overall impact: more reliable builds, consistent case data, clearer code, and improved user-facing messaging. Technologies and skills demonstrated: CI/CD workflow hardening and build cleanup, conditional field generation, event preconditions, UI/UX refinements, cross-repo deployment/config changes, and data synchronization across the platform.

April 2025

63 Commits • 29 Features

Apr 1, 2025

April 2025 performance highlights across four health domains. Delivered measurable business value through new backdated sick leave processing, robust data handling, and improved operational reliability; while elevating code quality, testing rigor, and CI/CD practices. Key outcomes include stability improvements, better observability, and forward-leaning schema and documentation updates.

March 2025

33 Commits • 15 Features

Mar 1, 2025

Monthly summary for 2025-03 across four repositories (navikt/helse-spesialist, navikt/helse-speil, navikt/helse-sparkelapper, navikt/helse-spinnvill). This period delivered a mix of observability, reliability, and deployment improvements, alongside architectural cleanups and tooling upgrades that collectively tighten traceability, accelerate delivery, and improve security. Key outcomes include enhanced logging and traceability for processing workflows; simplified configuration via feature toggles and reduced authentication introspection; targeted deployment and scaling optimizations to support higher load; GraphQL model cleanup and compatibility fixes; and build/test quality improvements. Summary per area below, followed by business impact and skills demonstrated. Key features delivered and improvements: - helse-spesialist: Observability enhancements for processing and alerts (better log visibility for unprocessed messages, correct log placement, labeling of sensitive identifiers); testing and code quality improvements (immutable builders, robust tests); platform configuration simplification via feature toggles; deployment configuration adjustments for streamlined rollouts; GraphQL data model cleanup by removing deprecated inntektEndringAarsak in favor of inntektEndringAarsaker; Gradle wrapper upgrade. - helse-speil: Deployment scaling improvements for Speil and Wonderwall to handle higher load; GraphQL codegen tooling and local dev workflow enhancements (local generate-graphql against specialist, Bearer token support, updated docs); EndringÅrsak component refactor for better organization; sporadic error simulation in mocks to stress-test resilience; GraphQL error constructor compatibility fix; migration to array-based income change reasons (inntektEndringAarsaker); DevOps/config cleanup; hydration environment checks centralization. - helse-sparkelapper: DokumentRiver logging improvements and MDC-based tracing improvements; INST2 service endpoint updates for new URLs and outbound host adjustments. - helse-spinnvill: Secure deployment workflow enhancement by removing API key and moving to id-token write permission. Major bugs fixed: - GraphQL error constructor compatibility fix in VarselMock to align with newer GraphQL libraries, reducing runtime errors during tests and in production-like environments. Overall impact and accomplishments: - Significantly improved observability and traceability across critical flows, enabling faster diagnosis and reduced MTTR. - Simplified and more robust deployment/configuration processes, enabling safer rollouts and easier environment parity. - Increased deployment scalability and resilience to higher load, aligning with growing demand. - Strengthened data model hygiene and compatibility with GraphQL tooling, setting the stage for future schema evolution. - Elevated developer experience through improved local development workflows, testing reliability, and build stability. Technologies and skills demonstrated: - GraphQL and GraphQL codegen, MDC/logging, Kotlin, immutable data patterns, Gradle (upgrade to latest stable), Kubernetes deployment strategies, feature toggles, CI/CD configuration cleanup, local dev tooling improvements, and secure deployment practices.

February 2025

36 Commits • 13 Features

Feb 1, 2025

February 2025 (2025-02) monthly summary covering four repositories: helse-speil, helse-spesialist, helse-sparkelapper, og helse-spre. Delivered focused improvements in user experience, code quality, observability, and resilience across the stack, with measurable business value through faster, more reliable user interactions and improved maintainability.

January 2025

78 Commits • 29 Features

Jan 1, 2025

January 2025 performance summary focusing on delivering business value through reliability, maintainability, and improved developer velocity across multiple health-domain repos. Highlights include robust API communication, leaner request surfaces, privacy-conscious logging, streamlined CI/CD, and improved GraphQL setup and testing infrastructure.

December 2024

54 Commits • 16 Features

Dec 1, 2024

December 2024 monthly summary for developer team. Highlights include delivering critical features, fixing high-impact issues, and driving measurable business value across four repos: helse-spre, helse-spesialist, helse-speil, and helse-sparkelapper. The month focused on production readiness, developer experience, data quality, and observability.

November 2024

94 Commits • 44 Features

Nov 1, 2024

November 2024 focused on reliability, performance, and developer efficiency across health-spesialist, health-sparkelapper, health-speil, and health-spre services. Delivered lifecycle hardening, data-access performance improvements, and enhanced observability to enable faster diagnosis and better user experiences under higher load. Major bug fixes and CI/deploy improvements reduced maintenance overhead and improved platform stability, with measurable impact on startup reliability, responsiveness, and data-query performance.

October 2024

23 Commits • 7 Features

Oct 1, 2024

In October 2024, the helse-spesialist module underwent a broad but focused refactor to strengthen data access, improve robustness, and reduce architectural debt. The work delivered a solid foundation for scalable feature delivery, improved data integrity, and clearer developer ergonomics across the DAO layer.

Activity

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Quality Metrics

Correctness90.2%
Maintainability91.8%
Architecture87.2%
Performance85.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

Avro SchemaBatchCSSDockerfileGradleGraphQLJSONJavaJavaScriptKotlin

Technical Skills

API ClientAPI DesignAPI DevelopmentAPI IntegrationAPI TestingAlertingApolloApollo ClientApplication ConfigurationApplication StartupAsynchronous ProgrammingAuthenticationAvroBackend DevelopmentBackend development

Repositories Contributed To

6 repos

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

navikt/helse-spesialist

Oct 2024 Oct 2025
13 Months active

Languages Used

JavaKotlinSQLDockerfileGradleJSONYAMLGraphQL

Technical Skills

Backend DevelopmentCode OrganizationCode ReadabilityDatabase InteractionDatabase ManagementDatabase Migration

navikt/helse-speil

Nov 2024 Sep 2025
9 Months active

Languages Used

CSSJavaScriptTypeScriptReactYAMLKotlinShellJSON

Technical Skills

Front End DevelopmentFront-end DevelopmentFrontend DevelopmentLocal StorageLocalizationReact

navikt/helse-sparkelapper

Nov 2024 Sep 2025
10 Months active

Languages Used

KotlinJavaYAMLAvro SchemaJSONMarkdown

Technical Skills

API IntegrationBackend DevelopmentError HandlingLoggingCI/CDGitHub Actions

navikt/helse-spre

Nov 2024 Jul 2025
5 Months active

Languages Used

KotlinYAMLJavaSQL

Technical Skills

Backend DevelopmentCloud ConfigurationConfiguration ManagementDevOpsInfrastructureKubernetes

navikt/helse-spinnvill

Jan 2025 Oct 2025
6 Months active

Languages Used

YAMLKotlinGradleSQLShellTOML

Technical Skills

CI/CDGitHub ActionsDevOpsBackend DevelopmentUnit TestingBuild Configuration

navikt/helse-spleis

May 2025 Oct 2025
2 Months active

Languages Used

YAML

Technical Skills

Configuration ManagementDevOpsCloud ConfigurationDatabase AdministrationPostgreSQL

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