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Simo-Pekka Kerkelä

PROFILE

Simo-pekka Kerkelä

Over eight months, contributed to Opetushallitus repositories by delivering 39 features and resolving 21 bugs, focusing on both frontend and backend improvements. Work included UI and UX enhancements, CI/CD pipeline modernization, and database refactoring, using technologies such as TypeScript, Clojure, and Docker. In valtionavustus, migrated legacy SQL to inline queries and replaced axios with native fetch, improving maintainability and performance. Enhanced test automation and reliability with Playwright and GitHub Actions, while also implementing localization, accessibility, and security updates. Efforts emphasized code quality, repository hygiene, and developer tooling, resulting in more robust, maintainable, and user-friendly applications across projects.

Overall Statistics

Feature vs Bugs

65%Features

Repository Contributions

156Total
Bugs
21
Commits
156
Features
39
Lines of code
32,156
Activity Months8

Work History

March 2026

53 Commits • 8 Features

Mar 1, 2026

March 2026 achievements for Opetushallitus/valtionavustus focused on delivering business value through major Yhteishanke enhancements, backend refactor, and reliability improvements. Key features delivered include VA-477 Yhteishanke contact updates and diff/view enhancements with a shared project contact update flow, embedded muutoshakemus diff rendering, and organization changes displayed in muutoshakemus views, gated behind a feature flag. The backend underwent a comprehensive SQL inlining and YesQL removal across Hakija, Virkailija, and associated API modules, simplifying maintenance and improving performance. Frontend modernization included migrating from axios to native fetch with robust response handling. Tilastokeskus integration introduced auto-fill of omistajatyyppi with a post-fill lock on the option to preserve data integrity. CI/testing improvements and test scaffolding reduced flakiness and improved reliability across Playwright-driven tests. Overall impact includes faster rollout of new features, more reliable data flows, and a cleaner, more maintainable codebase.

February 2026

10 Commits • 4 Features

Feb 1, 2026

February 2026: Delivered reliability and usability improvements in Opetushallitus/valtionavustus, stabilized CI tests, and expanded developer tooling. Fixed a deadlock in the decision editor to enable selecting the newest yleisohje version, enhanced UI layout for forms, added an extra-large text field option, updated Soresu-Form documentation, and delivered developer tooling for local QA data and DB access.

January 2026

23 Commits • 6 Features

Jan 1, 2026

January 2026 focused on delivering user-centric UI improvements, aligning the codebase with modern standards, and strengthening code quality in Opetushallitus/valtionavustus. Key outcomes include license compliance updates, UI stability fixes, and a migration from Less to modern CSS that reduces technical debt and accelerates future styling work. UX improvements refine the search flow by relocating help texts before the business-id input, complemented by tests to protect behavior. Multiple code quality and cleanup efforts reduced warnings and improved maintainability (lint fixes, config cleanup, and removal of obsolete files like mise.toml). These changes collectively enhance reliability, UI performance, and future velocity for feature work.

July 2025

1 Commits

Jul 1, 2025

Month: 2025-07 — Opetushallitus/ludos: Delivered a targeted test cleanliness improvement by refactoring imports in CertificateControllerTest and InstructionControllerTest. This change reduces potential naming conflicts, improves test readability, and stabilizes the CI test suite. The work aligns with ongoing quality improvements and supports faster PR reviews.

April 2025

49 Commits • 14 Features

Apr 1, 2025

April 2025 (Opetushallitus/aoe) focused on delivering containerized, reliable test execution, stronger CI/CD pipelines, richer test reporting, and security-conscious improvements. Key outcomes include end-to-end website material testing, containerized test runs, faster feedback loops through CI enhancements, metadata and GitHub Pages deployment of test results, and resilience against transient failures. These efforts reduce environment drift, speed up release cycles, and improve observability and security for stakeholders.

March 2025

2 Commits • 2 Features

Mar 1, 2025

Monthly summary for 2025-03 for repository Opetushallitus/aoe focusing on performance optimization and access control validation. Key work this month centered on frontend build efficiency and ensuring public accessibility for previews, with added automated checks to prevent regressions. No major bug fixes were reported in this period; work emphasized delivering business value through faster builds and reliable public previews.

January 2025

14 Commits • 2 Features

Jan 1, 2025

January 2025 performance summary: Delivered targeted business and technical improvements across two repositories. In Opetushallitus/ludos, implemented SUKO instruction rendering and language display updates, including using the instructionFi field for SUKO PDF generation, refining instruction visibility across PDFs and content pages, and enhancing Sweden-specific content handling for Kertomis Tehtava with new helpers, constants, and tests. In Opetushallitus/valtionavustus, corrected the University financial account mapping by updating the yliopisto account from 82930000 to 82921000, accompanied by a DB migration and adjustments to EDN templates and Clojure export logic. Additionally, a cleanup removed an unused numerical constant to improve clarity. These changes improve content accuracy, localization behavior, data integrity in financial processing, and overall maintainability.

December 2024

4 Commits • 3 Features

Dec 1, 2024

December 2024 delivered UX enhancements and repository quality improvements across Opetushallitus projects, focusing on immediate status visibility, localization readiness, and code cleanliness. Key features include a not-sent indicator UI for SelvitysFormEditor, a Swedish content input form in the editor, and repository hygiene updates to reduce noise and support robust testing.

Activity

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Quality Metrics

Correctness92.6%
Maintainability90.2%
Architecture88.6%
Performance86.4%
AI Usage21.4%

Skills & Technologies

Programming Languages

BashCSSClojureDockerfileGitHTMLJSONJavaScriptKotlinLESS

Technical Skills

API developmentAPI integrationAPI mockingAWSAWS integrationBackend DevelopmentCI/CDCSSCSS ModulesClojureConfigurationConfiguration ManagementDatabase ManagementDevOpsDocker

Repositories Contributed To

3 repos

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

Opetushallitus/valtionavustus

Dec 2024 Mar 2026
5 Months active

Languages Used

CSSTypeScriptClojureSQLJSONJavaScriptLESSTOML

Technical Skills

CSS ModulesEnd-to-end testingFront-end DevelopmentPlaywrightReactBackend Development

Opetushallitus/aoe

Mar 2025 Apr 2025
2 Months active

Languages Used

DockerfileHTMLShellTypeScriptBashNoneSQLYAML

Technical Skills

CI/CDDockerFrontend Build OptimizationFrontend DevelopmentPlaywrightTesting

Opetushallitus/ludos

Dec 2024 Jul 2025
3 Months active

Languages Used

GitShellTypeScriptJavaScriptKotlin

Technical Skills

DockerFrontend DevelopmentTestingVersion ControlFront End DevelopmentFront-end Development