Opetushallitus/kouta-backend
May 2025 – May 2026
9 Months active
Languages Used
SQLScalaJavaYAMLXMLBash
Technical Skills
API DevelopmentBackend DevelopmentDatabase ManagementAPI DesignScalaVersion Control
Heidi Lammi-Mihaljov
PROFILE
Heidi Lammi-mihaljov
Over nine months, contributed to the Opetushallitus/kouta-backend repository by designing and developing backend features that enhanced educational metadata management, API reliability, and data integrity. Leveraged Scala, Java, and PostgreSQL to implement multilingual classification term storage, centralized display name generation, and robust validation logic for competence objectives. Refactored data models to simplify schema complexity and integrated secure access controls, while maintaining comprehensive test coverage and CI/CD workflows with Maven and Docker. Improvements to deployment governance and test infrastructure enabled safer releases and faster feature delivery. The work emphasized maintainable code organization, traceable changes, and support for evolving business requirements.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
32Total
Bugs
2
Commits
32
Features
15
Lines of code
74,260
Activity Months9
Your Network
27 peopleSame Organization
@gofore.com19
Work History
May 2026
5 Commits • 3 Features
May 1, 2026Concise monthly summary for Opetushallitus/kouta-backend (May 2026). Focused on delivering core backend robustness, secure access controls, and test infrastructure improvements that reduce regression risk and enable faster feature delivery.
5 Commits • 3 Features
May 1, 2026Concise monthly summary for Opetushallitus/kouta-backend (May 2026). Focused on delivering core backend robustness, secure access controls, and test infrastructure improvements that reduce regression risk and enable faster feature delivery.
May 2026
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 (2026-03) — Opetushallitus/kouta-backend 1) Key features delivered - Kouta Backend Version Bump to 7.6.7-SNAPSHOT to indicate a new development iteration. Commit: 46266a38d95405015d13b96662ed97546514d0f7 (OPHJOD-2123). 2) Major bugs fixed - No major bugs fixed this month. 3) Overall impact and accomplishments - Signals a refreshed development cycle, enabling faster QA, safer downstream testing, and clearer upgrade paths for integrations. 4) Technologies/skills demonstrated - Git-based versioning and multi-module coordination; release management; improved traceability via structured commit messages.
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 (2026-03) — Opetushallitus/kouta-backend 1) Key features delivered - Kouta Backend Version Bump to 7.6.7-SNAPSHOT to indicate a new development iteration. Commit: 46266a38d95405015d13b96662ed97546514d0f7 (OPHJOD-2123). 2) Major bugs fixed - No major bugs fixed this month. 3) Overall impact and accomplishments - Signals a refreshed development cycle, enabling faster QA, safer downstream testing, and clearer upgrade paths for integrations. 4) Technologies/skills demonstrated - Git-based versioning and multi-module coordination; release management; improved traceability via structured commit messages.
February 2026
3 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) – Opetushallitus/kouta-backend: Delivered enhancements to educational metadata validation for competence objectives and learning objectives, with language-aware rules and optional competence fields to support vocational education scenarios. Key changes include a new learning objectives field for vocational education and language-based validation to enable saving competency objectives in vocational offerings. All work traceable to OPHJOD-2123 via commits: e7a45a1ce3677380f5a5c3c3012a91faa69f4d96; d5ef9c66fbe30e72be2f6213f46e2d6c6ad444c5; ba25dbd2f0b18cc0a1f3fc69d64f31c6f61d4b2c.
3 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) – Opetushallitus/kouta-backend: Delivered enhancements to educational metadata validation for competence objectives and learning objectives, with language-aware rules and optional competence fields to support vocational education scenarios. Key changes include a new learning objectives field for vocational education and language-based validation to enable saving competency objectives in vocational offerings. All work traceable to OPHJOD-2123 via commits: e7a45a1ce3677380f5a5c3c3012a91faa69f4d96; d5ef9c66fbe30e72be2f6213f46e2d6c6ad444c5; ba25dbd2f0b18cc0a1f3fc69d64f31c6f61d4b2c.
February 2026
November 2025
4 Commits • 2 Features
Nov 1, 20252025-11 — Opetushallitus/kouta-backend: Focused on enhancing metadata richness and API reliability. Delivered competence objectives integration into education metadata and Swagger/OpenAPI schema with multilingual object definitions, added robust data integrity validation to prevent inappropriate descriptions for vocational education components, and prepared release readiness by bumping kouta-common to 2.23.5-SNAPSHOT. These changes improve data quality, API usability, and downstream system confidence, supporting higher-quality education metadata and smoother integrations.
November 2025
4 Commits • 2 Features
Nov 1, 20252025-11 — Opetushallitus/kouta-backend: Focused on enhancing metadata richness and API reliability. Delivered competence objectives integration into education metadata and Swagger/OpenAPI schema with multilingual object definitions, added robust data integrity validation to prevent inappropriate descriptions for vocational education components, and prepared release readiness by bumping kouta-common to 2.23.5-SNAPSHOT. These changes improve data quality, API usability, and downstream system confidence, supporting higher-quality education metadata and smoother integrations.
September 2025
7 Commits • 4 Features
Sep 1, 2025September 2025 monthly summary for Opetushallitus/kouta-backend. Focused on delivering a centralized display-name generation mechanism, enriching HakutietoHakukohde with display and modifier names, API surface cleanup, and deployment governance improvements. These changes deliver consistent data presentation, reduced maintenance, lower risk releases, and improved development velocity.
7 Commits • 4 Features
Sep 1, 2025September 2025 monthly summary for Opetushallitus/kouta-backend. Focused on delivering a centralized display-name generation mechanism, enriching HakutietoHakukohde with display and modifier names, API surface cleanup, and deployment governance improvements. These changes deliver consistent data presentation, reduced maintenance, lower risk releases, and improved development velocity.
September 2025
August 2025
8 Commits • 1 Features
Aug 1, 2025Month 2025-08: In Opetushallitus/kouta-backend, delivered key features and fixes to the educational metadata model and transfer data flow. Focused on strengthening data integrity, enriching metadata for educational programs, and enabling robust transfer pipelines. Major work spanned metadata model enhancements, transfer file improvements (Osaamismerkki, classification terms, and extraction for Muu), and stricter validations to prevent invalid data from being stored. These changes enable more accurate downstream consumption, reporting, and compliance.
August 2025
8 Commits • 1 Features
Aug 1, 2025Month 2025-08: In Opetushallitus/kouta-backend, delivered key features and fixes to the educational metadata model and transfer data flow. Focused on strengthening data integrity, enriching metadata for educational programs, and enabling robust transfer pipelines. Major work spanned metadata model enhancements, transfer file improvements (Osaamismerkki, classification terms, and extraction for Muu), and stricter validations to prevent invalid data from being stored. These changes enable more accurate downstream consumption, reporting, and compliance.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for Opetushallitus/kouta-backend focusing on business value and technical excellence. Deliverables centered on release readiness and versioning accuracy following a master branch rebase, enabling reliable downstream builds and artifact provenance.
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for Opetushallitus/kouta-backend focusing on business value and technical excellence. Deliverables centered on release readiness and versioning accuracy following a master branch rebase, enabling reliable downstream builds and artifact provenance.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 performance highlights for Opetushallitus/kouta-backend: Delivered a backend data model refactor for classification terms and made the Muokkaaja.nimi property optional, addressing real-world edge cases and simplifying the data model. These changes reduce schema complexity and improve search/storage reliability, while keeping tests green and maintaining feature delivery velocity. Key commits are linked to the changes.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 performance highlights for Opetushallitus/kouta-backend: Delivered a backend data model refactor for classification terms and made the Muokkaaja.nimi property optional, addressing real-world edge cases and simplifying the data model. These changes reduce schema complexity and improve search/storage reliability, while keeping tests green and maintaining feature delivery velocity. Key commits are linked to the changes.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Opetushallitus/kouta-backend focusing on key accomplishments, impact, and skills demonstrated.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Opetushallitus/kouta-backend focusing on key accomplishments, impact, and skills demonstrated.
May 2025
Activity
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Quality Metrics
Correctness95.0%
Maintainability90.6%
Architecture90.6%
Performance91.2%
AI Usage21.8%
Skills & Technologies
Programming Languages
BashJavaSQLScalaXMLYAML
Technical Skills
API DesignAPI DevelopmentAPI designAPI developmentBackend DevelopmentCI/CDCode OrganizationCode RefactoringDatabase ManagementDockerGitHub ActionsJavaMavenObject-Oriented DesignPostgreSQL
Repositories Contributed To
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