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Dagfinn Olsen

PROFILE

Dagfinn Olsen

Dagfinn worked extensively on performance testing infrastructure for the Altinn/dialogporten and related repositories, building automated test suites and CI/CD workflows to validate critical paths under realistic load. He implemented and refined k6-based performance tests, integrating them with GitHub Actions and Kubernetes to enable scalable, repeatable scenarios. Using JavaScript and YAML, Dagfinn enhanced GraphQL query coverage, optimized token generation, and improved test data handling for both backend and frontend services. His work focused on reliability, security, and observability, calibrating thresholds to reflect real user activity and reducing test flakiness, which enabled faster feedback and more robust release validation across environments.

Overall Statistics

Feature vs Bugs

87%Features

Repository Contributions

52Total
Bugs
4
Commits
52
Features
27
Lines of code
83,679
Activity Months15

Work History

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 performance-focused delivery across Altinn/dialogporten-frontend and Altinn/dialogporten. Key features delivered include: 1) Performance Testing Enhancements with GraphQL Queries in the frontend, introducing new test data, revising test functions, and refining the test execution workflow to better simulate realistic user interactions and data retrieval; includes new GraphQL queries to broaden coverage. 2) GraphQL Query Performance Threshold Calibration in the backend, adjusting threshold values to reflect current user activity and improve the fidelity and reliability of performance tests. These efforts reduce risk for releases by validating performance against realistic workloads and enabling faster feedback. Major bugs fixed: No major defects reported in the provided data; the focus was on performance testing reliability and coverage improvements. Overall impact and accomplishments: Strengthened performance testing framework across frontend and backend, leading to higher confidence in release readiness, reduced risk of performance regressions, and clearer signals for optimization opportunities. Enabled data-driven decisions on thresholds and test coverage, aligning tests with actual user activity. Technologies/skills demonstrated: GraphQL querying, test data design, test automation, performance testing methodology, threshold calibration, cross-repo collaboration, Git-based version control.

December 2025

2 Commits • 1 Features

Dec 1, 2025

December 2025: Altinn/dialogporten – Focused on enhancing search functionality and overall robustness. Delivered consolidated end-user and service-owner search improvements with performance-oriented refactors, refined search criteria, and improved error handling (including 404 responses for dialog retrieval). Updated testing data handling to source tests directly from GitHub for faster iteration and CI reliability.

October 2025

2 Commits • 1 Features

Oct 1, 2025

October 2025: Focused on delivering automated performance testing capabilities for Dialogporten to strengthen reliability and scalability of critical paths, with GraphQL tests for arbeidsflate and targeted tests for shouldSendNotification. CI/CD workflows updated to run performance scenarios with realistic data, enabling faster feedback and capacity planning.

September 2025

3 Commits • 3 Features

Sep 1, 2025

September 2025: Performance-focused delivery across Altinn/dialogporten, Altinn/dialogporten-frontend, and Altinn/altinn-correspondence. Strengthened performance testing, test data handling, and CI/CD readiness. Delivered key improvements to GraphQL tests, enhanced K6-based performance suite with new configuration options and reliability enhancements, and extended staging support with stratified data sampling.

August 2025

3 Commits • 2 Features

Aug 1, 2025

August 2025 performance summary for Altinn repos: Delivered targeted performance testing enhancements across two key services, establishing repeatable load scenarios, improved visibility into legacy API interactions, and CI automation to support safer deployments as user activity grows. Focus remained on risk reduction and reliability through robust testing rather than new user-facing features; no major user-facing bugs fixed this month.

July 2025

1 Commits

Jul 1, 2025

Concise monthly summary for 2025-07 focusing on the Altinn authentication domain. Key features delivered: - CI/CD Pipeline Stability: Pin third-party GitHub Actions to specific SHAs to ensure reproducible builds and prevent breakages from upstream changes. Major bugs fixed: - Fixed CI/CD fragility by pinning actions (e.g., actions/checkout, azure/login, grafana/setup-k6-action) to fixed commit SHAs, eliminating unpredictable behavior from upstream updates. - Implemented commit-based guardrail in Altinn/altinn-authentication to enforce reproducible builds. Overall impact and accomplishments: - Increased CI/CD reliability and deployment velocity by eliminating non-deterministic builds. - Improved governance and security posture through explicit version pinning and change traceability. - Reduced time to diagnose and recover from pipeline-related issues due to stable, auditable environments. Technologies/skills demonstrated: - GitHub Actions, CI/CD best practices, version pinning, reproducible builds, change management, and commit traceability. - Strong focus on build reliability, release governance, and security-aware engineering. - Effective collaboration with repository Altinn/altinn-authentication to enforce stability across the pipeline.

June 2025

3 Commits • 2 Features

Jun 1, 2025

Month: 2025-06 — Performance-focused delivery across two repositories (Altinn/altinn-authentication and Altinn/altinn-correspondence). Key features delivered include: 1) Altinn Authentication: Performance Testing Enhancements: refactored tests to use the common platform package, enabled AT22 testing, added partiesQuery test, updated workflow with breakpoint and abortOnFail parameters; README updates and clarified test scenarios. 2) Altinn Correspondence: Performance testing documentation: created comprehensive README guides outlining purpose, prerequisites, test files, execution methods (CLI, GitHub Actions, act), and guidance to locate test results. Major bugs fixed: none explicitly recorded; effort focused on improving test stability, setup clarity, and repeatability. Overall impact: reduced friction in performance validation, improved test coverage and visibility, enabling faster feedback and more reliable releases. Technologies/skills demonstrated: performance testing, test refactoring, shared platform package usage, breakpoint configuration, README documentation, CI/CD (GitHub Actions), and test tooling (CLI, act).

May 2025

1 Commits

May 1, 2025

Monthly summary for 2025-05 focusing on search reliability improvements in Altinn/dialogporten. Implemented EndUserId enforcement in search queries and updated related filter retrieval logic to ensure searches always use a valid endUserId, delivering more accurate results and better performance.

April 2025

3 Commits • 2 Features

Apr 1, 2025

April 2025 performance-focused delivery across Altinn/dialogporten and Altinn-authentication, expanding test coverage, stabilizing CI/CD thresholds, and enabling data-driven performance optimization. Delivered threshold-based GraphQL search performance tests integrated into CI/CD (YT01), updated GraphQL README, and payload refinements; introduced Client Delegations Performance Tests with new scripts and updated access-management/delegation URLs; updated performance docs/configs and GitHub Actions parameters. These changes improve early detection of performance regressions, reduce flaky tests, and provide actionable insights to improve end-user experience.

March 2025

4 Commits • 3 Features

Mar 1, 2025

March 2025: Implemented end-to-end performance testing infrastructure across core services (dialogporten, authentication, and notifications), enabling repeatable load tests, CI integration, and test isolation. These efforts improve response-time visibility, reduce production risk, and support capacity planning through data-driven insights.

February 2025

14 Commits • 6 Features

Feb 1, 2025

February 2025 performance-focused milestone across Altinn/dialogporten and Altinn/altinn-correspondence. Delivered a scalable k6-based performance testing CI/CD, security hardening, token generation optimization, environment/data alignment for yt01, and a reusable load-testing framework for the Correspondence service. Improved reliability, security, and speed of test feedback, enabling earlier detection of performance regressions and safer production deployments.

January 2025

2 Commits • 1 Features

Jan 1, 2025

January 2025: Delivered Kubernetes-based performance testing for Altinn/dialogporten, including a k6 operator rollout, token caching optimization, and a new test for adding transmissions to dialogs. Updated CI workflows to run performance tests in Kubernetes, with improved test data handling and script execution within the cluster. Established scalable, repeatable performance testing with faster feedback and improved reliability.

December 2024

2 Commits • 1 Features

Dec 1, 2024

In December 2024, Altinn/dialogporten delivered enhanced performance testing coverage in CI/CD and fixed metric attribution for K6 reports. The work strengthened observability, enabled faster feedback on performance regressions, and improved data reliability in the yt01 environment.

November 2024

8 Commits • 2 Features

Nov 1, 2024

November 2024 performance month for Altinn/dialogporten: delivered robust enhancements to the performance testing framework, strengthened test data reliability, and improved test environment observability. The month focused on increasing test coverage for critical flows, reducing flakiness, and enabling faster feedback loops for stakeholders.

October 2024

2 Commits • 1 Features

Oct 1, 2024

Month 2024-10: Altinn/dialogporten delivered performance testing capabilities and CI/CD reliability improvements for critical flows with K6 integration. Focused on create dialog and search performance tests, secure token handling, and robust workflow triggering.

Activity

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Quality Metrics

Correctness85.4%
Maintainability83.8%
Architecture82.6%
Performance86.0%
AI Usage27.0%

Skills & Technologies

Programming Languages

BashCSVJavaScriptMarkdownSQLShellYAML

Technical Skills

API IntegrationAPI TestingAPI testingBackend TestingBrowser AutomationCI/CDCSV ParsingConfiguration ManagementData StratificationDevOpsDocumentationEnd-to-end testingError HandlingFrontend DevelopmentGitHub Actions

Repositories Contributed To

5 repos

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

Altinn/dialogporten

Oct 2024 Jan 2026
12 Months active

Languages Used

JavaScriptShellYAMLMarkdownBashCSV

Technical Skills

API TestingCI/CDGitHub ActionsK6Performance TestingScripting

Altinn/altinn-correspondence

Feb 2025 Sep 2025
4 Months active

Languages Used

BashJavaScriptYAMLMarkdownSQLShell

Technical Skills

API IntegrationGitHub ActionsJavaScriptKubernetesLoad TestingPerformance Testing

Altinn/altinn-authentication

Mar 2025 Jul 2025
4 Months active

Languages Used

BashJavaScriptYAML

Technical Skills

CI/CDGitHub ActionsKubernetesPerformance Testingk6API Testing

Altinn/dialogporten-frontend

Aug 2025 Jan 2026
3 Months active

Languages Used

JavaScriptShellYAML

Technical Skills

Backend TestingBrowser AutomationCI/CDFrontend DevelopmentGitHub ActionsGraphQL

Altinn/altinn-notifications

Mar 2025 Mar 2025
1 Month active

Languages Used

BashJavaScriptYAML

Technical Skills

API TestingCI/CDGitHub ActionsJavaScriptKubernetesLoad Testing

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