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Charlie Midtlyng

PROFILE

Charlie Midtlyng

Over the past 16 months, this developer delivered robust backend and frontend solutions across repositories such as navikt/familie-ef-sak and navikt/aap-kelvin-komponenter. They implemented feature toggles, database optimizations, and observability enhancements, focusing on reliability and maintainability. Their work included Kotlin and TypeScript development for API integration, job scheduling, and migration logic, as well as React-based UI improvements and error handling. By introducing granular logging, retry logic, and performance monitoring, they improved system stability and traceability. Their approach emphasized test-driven development, configuration management, and cross-repo consistency, resulting in scalable, auditable systems that support evolving business and operational requirements.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

116Total
Bugs
22
Commits
116
Features
55
Lines of code
9,364
Activity Months16

Work History

March 2026

3 Commits • 2 Features

Mar 1, 2026

March 2026: Delivered key reliability and performance improvements across two AAP repositories. Enhanced REST client error logging with URI traceability to improve failure investigation; implemented database performance enhancements including a new method to retrieve the last completed filling and added indexing to speed up work-timer and filling queries. These changes improved traceability, reduced latency for critical queries, and support more scalable operations.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026: Navikt/aap-kelvin-komponenter delivered a de-duplication enhancement for scheduling periodic jobs. Added a method to fetch existing jobs for a case and prevent duplicates by checking for jobs that are READY or FAILED before creating a new one. This mitigates duplicate processing, reduces scheduling churn, and improves reliability in production. Commit 0839d58c707660050f1b1fe7573a3b6fa73e430e aligns with issue #365.

January 2026

2 Commits • 1 Features

Jan 1, 2026

January 2026 monthly summary focused on delivering stable backend capabilities and enabling end-to-end recovery workflows across two repositories. Highlights include a stability-focused database query fix and the introduction of a NAY Unit Retrieval API to support recovery flows from the treatment domain.

December 2025

1 Commits • 1 Features

Dec 1, 2025

Month 2025-12 — navikt/aap-kelvin-komponenter: Implemented Granular HTTP Request Timing in RestClient to provide end-to-end latency visibility and enable performance dashboards. This instrumentation enables faster root-cause analysis and data-driven optimizations across the request lifecycle. No major bugs fixed this period; focus was on instrumentation and reliability improvements to support SLA monitoring.

November 2025

4 Commits • 2 Features

Nov 1, 2025

November 2025: Reliability and security enhancements across three repositories. Implemented key features and fixes to reduce scheduling failures, improve authentication reliability, and harden security practices.

October 2025

2 Commits

Oct 1, 2025

October 2025 — Delivered reliability and stability improvements in two critical components: Frontend letter status resolution in aap-brev and Kelvin-based access control lookup stabilization in aap-tilgang. The changes reduce incorrect UI states and prevent crashes, delivering tangible business value in terms of user experience and system reliability. Key outcomes include consistent status presentation for letter orders and robust access checks anchored to Kelvin case numbers.

September 2025

4 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary: Delivered stability improvements and new capability across three repos. Enabled avklaringsbehovkode support in behandlingsflyt, stabilized PostgreSQL driver compatibility, and improved error handling for overlapping rettighetsperioder in the Saker domain. These changes reduce runtime failures, improve diagnostics, and support smoother user workflows in behandlingsflyt and meldekort processing across the AAP services.

August 2025

9 Commits • 3 Features

Aug 1, 2025

August 2025 summary: Performance-focused enhancements across the AAP task management and background job processing domains, delivering concrete business value through better task categorization, faster processing, and more reliable workloads. Implemented new creation reason handling and migration to the vurderingsbehov model for AAP tasks, and sharpened storage and data transfer in the AAP-oppgave module. In the AAP-Kelvin components, improved job processing reliability and performance by replacing UNION with UNION ALL, adding ORDER BY, preventing duplicate executions via tests, and introducing explicit timestamps for job lifecycle events to enable accurate duration metrics. System stability and resource efficiency also improved with shorter HTTP timeouts and a calmer retry cadence for failed jobs. These changes collectively enhance scalability, observability, and operational risk management while delivering faster, more predictable task processing for business users.

June 2025

5 Commits • 4 Features

Jun 1, 2025

June 2025: Delivered observability, reliability, and governance improvements across the aap-arenaoppslag, aap-api-intern, and aap-oppgave repositories. Key work includes configuring application logging to Loki and Elasticsearch via the .nais/app.yml update, improving request deserialization reliability by switching to DefaultJsonMapper and adding tests for fetching cases by person identifier, and enhancing API endpoint visibility with additive logging (no functional changes). Introduced access-denied logging for task pickup to improve authorization diagnostics. These changes enable faster root-cause analysis, safer task handling, and better auditability. Technologies demonstrated include Loki/Elasticsearch logging, DefaultJsonMapper-based deserialization, test-driven development, and instrumentation in Kotlin/Java development practice.

May 2025

5 Commits • 4 Features

May 1, 2025

May 2025 performance summary: Delivered cross-repo improvements focusing on developer experience, reliability, and user usability. Highlights include local development URL guidance for Meldekort frontend, corrected unsubmitted meldekort detection, retry-enabled OBO token fetch, case-insensitive task search, and configurable RestClient HTTP retries. These changes reduce onboarding friction, increase data correctness, improve resilience to timeouts, and enhance user usability.

March 2025

1 Commits • 1 Features

Mar 1, 2025

Month: 2025-03 — Delivered environment-specific outbound access configuration for navikt/aap-tilgang, introducing external-outbound-hosts to centralize and clarify allowed outbound connections per environment (development and production). This improves security posture and maintainability by reducing configuration drift and ensuring environment isolation. No major bugs fixed in this repository this month. Impact: stronger security, easier cross-environment deployments, and better auditability across PDL and SAF access. Technologies/skills demonstrated: environment-specific configuration in nais-files, security hardening, centralized configuration management, and clear commit traceability (e87e1df165ce968d949a3d71132d134c642bf6dc).

February 2025

15 Commits • 7 Features

Feb 1, 2025

February 2025 performance summary for the developer team. The month combined stability improvements, strategic technology migrations, and UI/UX refinements across multiple services to deliver business value and reduce manual effort. Notable migration work from Redis to ValKey was completed in key frontends, alongside UI simplifications and test quality improvements that promote reliability and maintainability.

January 2025

21 Commits • 10 Features

Jan 1, 2025

January 2025 performance summary: Delivered modernization and stability improvements across key frontend repositories, updated core stack to React 19, and removed legacy dependencies to shrink build size and simplify maintenance. Implemented production logic simplifications by removing feature toggles, and delivered targeted UX enhancements in navigation and editing experiences. Strengthened reliability through distribution fixes, recipient enforcement for letters, and robust PDF handling with explicit language context. Demonstrated strong cross-repo collaboration and tooling improvements, resulting in faster delivery, fewer flaky tests, and a more predictable user experience.

December 2024

15 Commits • 6 Features

Dec 1, 2024

December 2024 monthly summary for developer teams. Focused on enhancing templating and navigation safety, delivering feature-rich editing experiences, and strengthening data integrity across frontend repos. Business value delivered includes faster template authoring, safer user interactions, and reliable submission workflows across multiple applications.

November 2024

25 Commits • 11 Features

Nov 1, 2024

November 2024 highlights: Delivered measurable business value through UI clarity, data integrity, platform modernization, and improved developer experience. Key outcomes include UI text simplification in HistoriskeVurderingermeny to improve readability; database integrity hardening in familie-ef-sak to prevent duplicate conditions; runtime stack modernization and routing stability improvements in frontend repos to boost reliability; branding capitalization standardization across NAV/Name usage in generated materials and UI texts; and deployment/dev tooling improvements enabling leaner production builds and faster onboarding. These changes reduce user friction, eliminate data duplication risks, enhance deployment reliability, and improve cross-repo branding consistency.

October 2024

3 Commits • 1 Features

Oct 1, 2024

October 2024 highlights for navikt/familie-ef-sak. Key features delivered: - Early data migration support to 2009 via feature toggle TILLAT_MIGRERING_7_ÅR_TILBAKE. When enabled, migrations can target 2009. The migration boundary helper hentDatogrenseForMigrering now returns 2009-01-01 in this scenario. Tests were updated to reflect the 2009 migration window. Commits: eb794af2818f8ea952c03e8e45ccae9bd225b73c; 399988e9ceb14cad1f39415f722b5f099a1dc130. Major bugs fixed: - Rollback/adjust migration limit to 2016 with the feature toggle. Reverts the 2009 allowance and enforces a 2016-01-01 migration limit when the toggle is enabled. Updates to service logic and tests reflect this change. Commit: bdca9f6dfdfcc2e379539a2283e957705fd821c8. Overall impact and accomplishments: - Provides controlled, auditable migration behavior via a feature toggle, balancing data accessibility with governance. Improved test coverage and a clear commit trail enhance maintainability and risk management. Technologies/skills demonstrated: - Feature flags and toggle-driven behavior, boundary condition reasoning for migration windows, service-layer updates, regression testing, and test-driven adjustments with strong traceability.

Activity

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Quality Metrics

Correctness87.4%
Maintainability88.0%
Architecture84.2%
Performance82.2%
AI Usage20.4%

Skills & Technologies

Programming Languages

CSSDockerfileGradleHTMLHandlebarsJSONJavaJavaScriptKotlinMarkdown

Technical Skills

API DevelopmentAPI IntegrationAPI developmentAccess ControlBackend DevelopmentBuild ConfigurationBuild ToolsCI/CDCSS TransitionsCode CleanupCode RefactoringCode StyleComponent DevelopmentComponent Library UsageConfiguration

Repositories Contributed To

21 repos

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

navikt/familie-ef-sak-frontend

Nov 2024 Feb 2025
4 Months active

Languages Used

JSONJavaScriptTypeScriptYAMLCSSHTMLtsxReact

Technical Skills

Backend DevelopmentBuild ToolsCI/CDDependency ManagementDevOpsDocker

navikt/aap-kelvin-komponenter

May 2025 Mar 2026
7 Months active

Languages Used

JavaKotlinSQLGradle

Technical Skills

Backend DevelopmentError HandlingHTTP ClientRetry LogicDatabase ManagementDatabase Optimization

navikt/familie-ef-sak

Oct 2024 Jan 2025
4 Months active

Languages Used

KotlinSQL

Technical Skills

Backend DevelopmentFeature TogglingKotlinTestingAPI IntegrationCode Style

navikt/familie-brev

Nov 2024 Feb 2025
3 Months active

Languages Used

DockerfileJavaScriptTypeScripttypescriptyamlHTML

Technical Skills

CI/CDCode RefactoringDevOpsDockerFrontend DevelopmentNode.js

navikt/familie-ef-iverksett

Jan 2025 Feb 2025
2 Months active

Languages Used

KotlinYAML

Technical Skills

API DevelopmentBackend DevelopmentDatabase ManagementJava/KotlinRefactoringService Refactoring

navikt/aap-oppgave

May 2025 Jan 2026
5 Months active

Languages Used

KotlinSQLJavaYAML

Technical Skills

Backend DevelopmentDatabase Query OptimizationLoggingAPI DevelopmentDatabase ManagementTesting

navikt/familie-ef-soknad-frontend

Nov 2024 Jan 2025
3 Months active

Languages Used

TypeScriptYAMLJavaScripttsx

Technical Skills

Dependency ManagementDevOpsFrontend DevelopmentInternationalizationReactCode Refactoring

navikt/aap-meldekort-backend

May 2025 Mar 2026
4 Months active

Languages Used

JavaKotlinSQL

Technical Skills

Backend DevelopmentGradleKotlinRefactoringUnit TestingError Handling

navikt/familie-klage-frontend

Nov 2024 Feb 2025
2 Months active

Languages Used

TypeScriptYAMLyaml

Technical Skills

Backend DevelopmentCI/CDConfiguration ManagementDevOpsDockerNode.js

navikt/aap-tilgang

Mar 2025 Nov 2025
4 Months active

Languages Used

YAMLGradleKotlin

Technical Skills

DevOpsInfrastructure as CodeDependency ManagementAPI IntegrationAccess ControlBackend Development

navikt/familie-tilbake-frontend

Nov 2024 Feb 2025
3 Months active

Languages Used

JavaScriptReactTypeScriptShell

Technical Skills

Frontend DevelopmentReactTypeScriptHooksReact RouterConfiguration Management

navikt/familie-tilbake

Nov 2024 Nov 2024
1 Month active

Languages Used

HandlebarsKotlinMarkdown

Technical Skills

Backend DevelopmentBuild ConfigurationCode RefactoringDocumentationInternationalizationText Standardization

navikt/familie-felles-frontend

Jan 2025 Jan 2025
1 Month active

Languages Used

CSSJavaScriptTypeScript

Technical Skills

CSS TransitionsComponent Library UsageFrontend DevelopmentReactTypeScript

navikt/aap-arenaoppslag

Jun 2025 Jun 2025
1 Month active

Languages Used

JavaKotlinYAML

Technical Skills

API DevelopmentBackend DevelopmentConfigurationDevOpsJSON ProcessingLogging

navikt/familie-pdf

Jan 2025 Jan 2025
1 Month active

Languages Used

Kotlin

Technical Skills

API DevelopmentBackend DevelopmentSpring Framework

navikt/familie-klage

Nov 2024 Nov 2024
1 Month active

Languages Used

Kotlin

Technical Skills

Backend DevelopmentRefactoring

navikt/familie-ba-sak-frontend

Feb 2025 Feb 2025
1 Month active

Languages Used

YAML

Technical Skills

Configuration ManagementDevOps

navikt/aap-meldekort

May 2025 May 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation

navikt/mine-aap

May 2025 May 2025
1 Month active

Languages Used

TypeScript

Technical Skills

API IntegrationBackend DevelopmentError Handling

navikt/aap-api-intern

Jun 2025 Jun 2025
1 Month active

Languages Used

Kotlin

Technical Skills

API DevelopmentLoggingObservability

navikt/aap-brev

Oct 2025 Oct 2025
1 Month active

Languages Used

JavaKotlin

Technical Skills

API DevelopmentBackend Development