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Espen Johansen Velsvik

PROFILE

Espen Johansen Velsvik

Espen Velsvik developed and maintained backend systems for the navikt/ung-sak and navikt/k9-abakus repositories, focusing on benefit processing, data integrity, and developer experience. Over nine months, he delivered features such as centralized grunnbeløp data management, robust migration processes, and policy-driven period limits, while also refactoring legacy code and improving test reliability. Espen used Java, Kotlin, and SQL to implement business logic, enforce database constraints, and streamline CI/CD pipelines. His work addressed complex requirements like idempotency, timeline reasoning, and system integration, resulting in more reliable deployments, improved data quality, and maintainable codebases aligned with evolving business needs.

Overall Statistics

Feature vs Bugs

56%Features

Repository Contributions

75Total
Bugs
20
Commits
75
Features
25
Lines of code
25,976
Activity Months9

Work History

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for navikt/k9-abakus focusing on local development configuration work and its business value.

June 2025

3 Commits

Jun 1, 2025

June 2025 monthly summary for navikt/ung-sak: Delivered system-wide UNG_SAK identifier normalization across modules, fixes hardcoded references to K9SAK, and updated the fagsystem enum to reflect the correct identifier. Reverted an optimization that previously skipped Abakus calls for treatments without control to restore correctness. These changes enhance data integrity, historical alignment, and downstream processes (arising in event mapping, document archiving, and letter distribution).

May 2025

2 Commits • 2 Features

May 1, 2025

Monthly summary for 2025-05: Two repository-focused improvements delivering observability and CI reliability, with impact on debugging efficiency and automated validation across two repos (navikt/ung-sak and navikt/k9-abakus).

April 2025

3 Commits • 1 Features

Apr 1, 2025

Monthly summary for 2025-04 (navikt/ung-sak). This month focused on reliability and accuracy improvements in income control processing and on stabilizing migrations to reduce deployment risk. Key work included a feature refactor for income control periods handling and preliminary handling for fragmented program periods, plus migration versioning fixes and a small refactor to the income processing step to improve execution order.

March 2025

5 Commits • 1 Features

Mar 1, 2025

March 2025 monthly summary focusing on key business value and technical achievements across two repos: navikt/ung-sak and navikt/k9-abakus. Delivered data correctness fixes, CI/CD improvements, and stability work that reduce risk and enhance reliability.

February 2025

4 Commits • 2 Features

Feb 1, 2025

February 2025: Delivered targeted CI/CD and testing improvements across three repositories, enhancing release velocity, test containment, and debugging observability. Implemented per-repo CI workflow optimizations, expanded automated test coverage, and hardened development scripts to prevent data loss. These changes reduce CI time, increase test reliability, and improve operator-facing error insights, contributing to faster feedback loops and more robust deployments.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for navikt/ung-sak: Focused on removing legacy income statement handling and simplifying the period data model. Removed INNTEKTSMELDING as a kravdokument type and dropped employer references from SøktPeriode, and deleted UtledStatusPåPerioderTjeneste. This reduces maintenance overhead and data complexity, improving downstream data quality and future maintainability.

December 2024

46 Commits • 14 Features

Dec 1, 2024

Month: 2024-12 | Repository: navikt/ung-sak Overview: This month focused on improving reliability, data integrity, and maintainability to support regulated youth program benefits processing. Major work centered on cleansing the codebase, enforcing policy-driven limits, hardening against duplicates, and enriching timelines with telemetry. The work delivers business value by reducing error-prone edge cases, enabling safer deployments, and clarifying data lineage for audits. Key features delivered: - Codebase Cleanup and Test Maintenance: Removed test-only code, unused imports, and diff-related test dependencies; refined tests and QA tooling to improve test signal quality and maintainability. - Fagsak duration handling and 52 weeks pre-limit: Enforced 52-week forward limit for vilkårsperioder and fagsakperiode based on fom date for youth program; adjusted day-count logic to reflect prior usage. - Death handling and post-death rejection: Implemented handling of death and birth for applicant and child; added rejection flow after user death to ensure compliance with lifecycle rules. - Idempotency and service split: Introduced service split and idempotency checks to prevent duplicate processing and improve fault tolerance. - Behandlingsårsak accuracy and daily rate datatype: Fixed behandlingsårsak return values and changed child daily rate to integer for consistency. - Child timeline improvements and telemetry: Corrected child supplement timeline and added telemetry for timeline tracking. - Additional feature work: Added application document differ, treatment reason extractors for application basis, Javadoc additions, and groundwork for future refactors with careful type-table alignment. Major bugs fixed: - Correct behandling årsak and integer handling for child daily rate. - Limit changes only to periods without tracking and fix related edge cases for timeline. - Fix tests related to vedtatt ytelse, remove/adjust tests for pleietrengende and other XML expectations; ensure test expectations align with updated behavior. - Cleanup: Remove legacy Infotrygd integration artifacts, mappings, and constraints to reduce technical debt. - Add missing type keyword and correct table types; fix storage code value mapping and boundary conditions in various components. Overall impact and accomplishments: - Increased data integrity and reliability in benefit processing, reducing risk of incorrect determinations and duplicate processing. - Improved maintainability and test hygiene, enabling faster iteration and safer releases. - Enhanced observability with added telemetry, aiding monitoring and troubleshooting of timelines. - Policy-aligned behavior, notably 52-week period limits, reducing compliance risk. Technologies/skills demonstrated: - Kotlin/Java ecosystem, with targeted refactoring and test improvements. - Data integrity controls (idempotency, database constraints) and robust lifecycle handling (death/birth scenarios). - Timeline reasoning and telemetry integration for child benefits. - Documentation and API usability improvements (Javadoc, code comments).

November 2024

10 Commits • 3 Features

Nov 1, 2024

November 2024 monthly summary for navikt/ung-sak focusing on delivering a robust data foundation, dev-environment reliability, and tooling improvements. Key outcomes include a centralized grunnbeløp data source, stabilized migration processes, and an upgrade to Swagger tooling, enabling more reliable benefit calculations and faster deployments.

Activity

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Quality Metrics

Correctness87.2%
Maintainability87.8%
Architecture83.0%
Performance79.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

JavaKotlinN/APropertiesSQLTypeScriptXMLYAML

Technical Skills

API DesignAPI DevelopmentAPI IntegrationBackend DevelopmentBusiness LogicCI/CDCode CleanupCode RefactoringConfigurationConfiguration ManagementDatabaseDatabase IntegrationDatabase ManagementDatabase MigrationDatabase Querying

Repositories Contributed To

3 repos

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

navikt/ung-sak

Nov 2024 Jun 2025
8 Months active

Languages Used

JavaSQLXMLYAMLKotlinTypeScript

Technical Skills

API IntegrationBackend DevelopmentCI/CDConfiguration ManagementDatabase IntegrationDatabase Management

navikt/k9-abakus

Feb 2025 Jul 2025
4 Months active

Languages Used

YAMLJavaN/AProperties

Technical Skills

CI/CDGitHub ActionsAPI DevelopmentBackend DevelopmentJavaMaven

navikt/sif-gha-workflows

Feb 2025 Feb 2025
1 Month active

Languages Used

YAML

Technical Skills

CI/CDGitHub Actions

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