Opetushallitus/viestinvalityspalvelu
Feb 2025 – Jan 2026
7 Months active
Languages Used
JavaJavaScriptShellTextTypeScriptXMLYAMLGit
Technical Skills
Build AutomationBuild ManagementBuild ToolsConfigurationDependency ManagementDevOps
Tomi Karlstedt
PROFILE
Tomi Karlstedt
Worked on the Opetushallitus/viestinvalityspalvelu repository, delivering features and fixes that improved build stability, security, and developer experience across backend and frontend systems. Addressed dependency management and security patching using Java, JavaScript, and TypeScript, ensuring reliable deployments and reducing vulnerabilities. Enhanced local development by refining Docker and Node.js environments, and streamlined CI/CD pipelines with AWS CDK and CodeBuild. Implemented infrastructure configuration changes to enable production features and maintained repository hygiene through code cleanup and refactoring. Focused on data integrity with validation enhancements and mitigated CVEs through targeted upgrades, supporting a stable, maintainable, and secure codebase for ongoing development.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
44Total
Bugs
5
Commits
44
Features
10
Lines of code
10,636
Activity Months7
Your Network
51 peopleWork History
January 2026
1 Commits
Jan 1, 2026January 2026 monthly summary for Opetushallitus/viestinvalityspalvelu: Stabilized local development environment by reverting the LocalStack Docker image in docker-compose from v3.0.2 to v3.0.1 due to issues with the newer version, ensuring reliable local testing and a consistent dev experience across teams. This change mitigated environment-related failures and prepared the ground for upcoming feature work.
1 Commits
Jan 1, 2026January 2026 monthly summary for Opetushallitus/viestinvalityspalvelu: Stabilized local development environment by reverting the LocalStack Docker image in docker-compose from v3.0.2 to v3.0.1 due to issues with the newer version, ensuring reliable local testing and a consistent dev experience across teams. This change mitigated environment-related failures and prepared the ground for upcoming feature work.
January 2026
December 2025
15 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary for Opetushallitus/viestinvalityspalvelu focusing on stabilizing runtime infra, strengthening security/privacy, and increasing CI/CD reliability to deliver predictable business value. Key deliveries include Node.js runtime and CDK infra alignment with a leaner codebase, security hardening and automated dependency updates, improvements to frontend testing and the CodeBuild environment, and an established baseline for future upgrades.
December 2025
15 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary for Opetushallitus/viestinvalityspalvelu focusing on stabilizing runtime infra, strengthening security/privacy, and increasing CI/CD reliability to deliver predictable business value. Key deliveries include Node.js runtime and CDK infra alignment with a leaner codebase, security hardening and automated dependency updates, improvements to frontend testing and the CodeBuild environment, and an established baseline for future upgrades.
August 2025
4 Commits • 1 Features
Aug 1, 2025August 2025 — Opetushallitus/viestinvalityspalvelu: Delivered critical enhancements to OID validation and completed a security patch rollup. The OID validation now accepts additional organization OID values (28, 199, 299) across modules, improving data integrity and decisioning for organization-level entities. Implemented a security patch rollout addressing CVE-2025-7783 (form-data) and CVE-2025-54988 (tika-parser), including alignment of dependent libraries and versions to ensure compatibility. This release reduces data risk, strengthens the system's security posture, and maintains cross-module compatibility. Technologies/skills: dependency management, multi-module validation patterns, patching and upgrade of form-data, tika-parser and related Commons libraries, and code changes to accommodate upgrades.
4 Commits • 1 Features
Aug 1, 2025August 2025 — Opetushallitus/viestinvalityspalvelu: Delivered critical enhancements to OID validation and completed a security patch rollup. The OID validation now accepts additional organization OID values (28, 199, 299) across modules, improving data integrity and decisioning for organization-level entities. Implemented a security patch rollout addressing CVE-2025-7783 (form-data) and CVE-2025-54988 (tika-parser), including alignment of dependent libraries and versions to ensure compatibility. This release reduces data risk, strengthens the system's security posture, and maintains cross-module compatibility. Technologies/skills: dependency management, multi-module validation patterns, patching and upgrade of form-data, tika-parser and related Commons libraries, and code changes to accommodate upgrades.
August 2025
June 2025
6 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Opetushallitus/viestinvalityspalvelu: Focused on security hardening, reliability improvements, and repository hygiene. Delivered dependency upgrades to mitigate CVEs, fixed timeout handling in ViestinvalitysClient, and completed maintenance to clean the repo.
June 2025
6 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for Opetushallitus/viestinvalityspalvelu: Focused on security hardening, reliability improvements, and repository hygiene. Delivered dependency upgrades to mitigate CVEs, fixed timeout handling in ViestinvalitysClient, and completed maintenance to clean the repo.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Opetushallitus/viestinvalityspalvelu. Key win: Hahtuva System Activation delivered by updating infrastructure configuration to set the systemEnabled flag to true, enabling the Hahtuva feature in production. No major bugs fixed this month. Overall impact: production readiness improved with a smoother Hahtuva rollout and reduced manual activation steps. Technologies/skills demonstrated include infrastructure configuration management, feature toggling, and Git-based change control.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Opetushallitus/viestinvalityspalvelu. Key win: Hahtuva System Activation delivered by updating infrastructure configuration to set the systemEnabled flag to true, enabling the Hahtuva feature in production. No major bugs fixed this month. Overall impact: production readiness improved with a smoother Hahtuva rollout and reduced manual activation steps. Technologies/skills demonstrated include infrastructure configuration management, feature toggling, and Git-based change control.
May 2025
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Focused on enabling secure and scalable distribution by publishing all packages in Opetushallitus/viestinvalityspalvelu to the GitHub Packages registry. This work establishes a stable artifact pipeline and improves accessibility for downstream consumers. No major bugs were reported this month; the primary value delivered was packaging and registry integration that reduces time-to-distribution and increases reproducibility.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Focused on enabling secure and scalable distribution by publishing all packages in Opetushallitus/viestinvalityspalvelu to the GitHub Packages registry. This work establishes a stable artifact pipeline and improves accessibility for downstream consumers. No major bugs were reported this month; the primary value delivered was packaging and registry integration that reduces time-to-distribution and increases reproducibility.
February 2025
16 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Opetushallitus/viestinvalityspalvelu. Focused on delivering business value through build stability, security hardening, and developer experience improvements. The work enabled more reliable deployments, faster onboarding, and reduced risk in production.
16 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for Opetushallitus/viestinvalityspalvelu. Focused on delivering business value through build stability, security hardening, and developer experience improvements. The work enabled more reliable deployments, faster onboarding, and reduced risk in production.
February 2025
Activity
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Quality Metrics
Correctness94.6%
Maintainability94.0%
Architecture92.8%
Performance91.4%
AI Usage21.4%
Skills & Technologies
Programming Languages
GitJSONJavaJavaScriptScalaShellTextTypeScriptXMLYAML
Technical Skills
API IntegrationAWSAWS CDKAWS CodeBuildAutomationBackend DevelopmentBuild AutomationBuild ManagementBuild ToolsCI/CDCode CleanupConfigurationConfiguration ManagementContinuous IntegrationDependency Management
Repositories Contributed To
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