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Sivert Lunsæter

Sondre Flateby Larsen contributed to the navikt/helse-spleis, navikt/helse-spre, and navikt/helse-sparkelapper repositories by engineering backend features and infrastructure improvements for health and insurance services. He upgraded PostgreSQL environments, extended data models to support self-employed categories, and enhanced event-driven workflows using Kotlin and SQL. Sondre refactored deployment scripts, modernized test frameworks with DSLs, and implemented validation logic to ensure data integrity. His work included optimizing memory allocation in GCP, refining financial calculations, and streamlining CI/CD pipelines. These efforts improved system reliability, compliance, and analytics readiness, demonstrating a thorough approach to backend development, configuration management, and database administration.

Overall Statistics

Feature vs Bugs

67%Features

Repository Contributions

46Total
Bugs
8
Commits
46
Features
16
Lines of code
5,951
Activity Months8

Work History

October 2025

13 Commits • 4 Features

Oct 1, 2025

October 2025 focused on delivering cross-repo features for self-employed insurance flows, stabilizing period and tax calculations, and accelerating development and deployment cycles. Key accomplishments span three repositories: enhanced self-employed applications in helse-spleis, new Sparkel Forsikring app in sparkelapper, and cleanup/CI/CD improvements across the stack. The work reduces onboarding friction, mitigates payout and calculation risks, improves analytics quality, and strengthens development velocity and reliability.

September 2025

12 Commits • 3 Features

Sep 1, 2025

September 2025 (navikt/helse-spleis) delivered key improvements in testing, self-employment data modeling, and stability, driving higher quality and reliability for complex support workflows (childminder scenarios). Highlights include a DSL-based test framework overhaul, extended test coverage via Vedtaksperiodesamler enhancements, and broader self-employment workflow support with Yrkesaktivitetstype modeling; all backed by dependency upgrades and more robust conditional logic.

August 2025

6 Commits • 1 Features

Aug 1, 2025

August 2025 performance summary for navikt/helse-spleis. Key feature delivered: support for self-employed categories in the data model, including new class codes for selvstendig næringsdrivende (fisher, daymamma, farmer) and an extended Yrkesaktivitet enum. Tests updated and Sigrun introduced as an income source with updated income source assignment logic. Major bugs fixed: validation refined to apply income checks for the month prior to skjæringstidspunkt and sykepengegrunnlag only to Arbeidstaker (employees); floating-point distribution precision issues mitigated by treating tiny negative differences as zero. Overall impact: improved Vilkårsgrunnlag accuracy for employees, expanded coverage for self-employed categories, and more robust financial distribution calculations. Demonstrates competence in data model evolution, test alignment, and numerical robustness.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025: Focused on delivering business value through traceability and reliability improvements in helse-spleis. Implemented an event-level enhancement to link vedtaksperiode_endret events with behandlingenId, fixed a critical bug in the cancellation flow for ongoing reassessments, and reinforced quality with targeted tests. Demonstrated backend refactoring, improved test coverage, and stronger integration with downstream systems through an event-driven approach.

June 2025

7 Commits • 3 Features

Jun 1, 2025

June 2025 monthly summary for navikt/helse-spleis and navikt/helse-spre focusing on business value and technical achievements across features and bug fixes. Delivered capabilities to enable analytics, improved event data enrichment, strengthened cancellation flows, and enhanced data integrity. Highlights span two repositories with cross-cutting improvements and measurable impact on reliability and analytics readiness.

May 2025

3 Commits • 2 Features

May 1, 2025

May 2025 monthly summary for navikt/helse-spleis: The month focused on strengthening production readiness for upcoming migrations and implementing regulatory subsumption capabilities, with emphasis on reliability, observability, and compliance tests.

April 2025

2 Commits • 1 Features

Apr 1, 2025

April 2025 focused on modernizing the database stack by upgrading PostgreSQL from 15 to 17 across development and production environments, improving performance, security, and reliability. Upgrade steps included development upgrade via GCP Console with ANALYZE post-upgrade and production upgrade for the styringsinfo service with ANALYZE to refresh database statistics. The work is tracked via commits across the Helsa-spre repository.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary focusing on stability and performance improvements for the sparkel-arbeidsgiver service in health-related sparkelapper. Delivered a memory allocation enhancement by increasing the production memory limit to 1 GB in GCP configuration, backed by a single commit. This change reduces memory pressure, lowers the risk of memory-related outages, and improves response stability under peak usage. Note: No explicit bug fixes were logged this month; primary value comes from configuration-driven stability and performance gains.

Activity

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Quality Metrics

Correctness89.4%
Maintainability89.0%
Architecture87.8%
Performance78.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

GradleJavaKotlinSQLShellYAML

Technical Skills

API DesignApplication DeploymentBackend DevelopmentCI/CDCloud ConfigurationCodebase MaintenanceConfiguration ManagementDSL DevelopmentDTO DesignData EngineeringData ModelingData StructuresDatabase AdministrationDatabase IntegrationDatabase Management

Repositories Contributed To

3 repos

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

navikt/helse-spleis

May 2025 Oct 2025
6 Months active

Languages Used

KotlinShellYAMLGradleJava

Technical Skills

Backend DevelopmentCI/CDConfiguration ManagementDatabase AdministrationDevOpsInfrastructure Management

navikt/helse-sparkelapper

Feb 2025 Oct 2025
2 Months active

Languages Used

YAMLKotlin

Technical Skills

Cloud ConfigurationDevOpsApplication DeploymentBackend DevelopmentConfiguration ManagementDatabase Integration

navikt/helse-spre

Apr 2025 Oct 2025
3 Months active

Languages Used

YAMLKotlinSQL

Technical Skills

Database AdministrationDatabase ManagementDevOpsBackend DevelopmentError HandlingSQL

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