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Mirko Sekulic

PROFILE

Mirko Sekulic

Over 16 months, this developer delivered 52 features and 10 bug fixes to the Altinn/altinn-studio repository, focusing on backend reliability, deployment automation, and scalable CI/CD infrastructure. They led large-scale refactoring to centralize designer components, modernized build systems with Central Package Management, and implemented GitOps-driven deployment pipelines using Docker, Kubernetes, and Flux CD. Their work included robust API development in C#, database migrations with Entity Framework Core, and security hardening through authentication improvements and dependency management. By integrating distributed caching, enhancing localization, and automating deployment workflows, they improved maintainability, onboarding, and operational stability across cloud environments and multiple organizations.

Overall Statistics

Feature vs Bugs

84%Features

Repository Contributions

99Total
Bugs
10
Commits
99
Features
52
Lines of code
46,261
Activity Months16

Your Network

53 people

Work History

March 2026

12 Commits • 6 Features

Mar 1, 2026

Concise monthly summary for Altinn/studio (March 2026): major features delivered, security hardening, and infrastructure improvements with clear business value and traceability.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for Altinn Studio focusing on CI infrastructure improvements. Increased BRG CI runner capacity in the Gitea organization from 5 to 6 replicas and added a new 'dibk' runner configuration to improve CI throughput and reliability. This work reduces PR validation times and enhances developer productivity. No major bugs fixed this month for this repo. Key commits include ecf768a001fc37e8583b768c684e1045da78d2a9 (#17932).

December 2025

6 Commits • 4 Features

Dec 1, 2025

December 2025 delivered substantial reinforcement of the platform's GitOps-driven deployment capabilities in Altinn/altinn-studio. Key outputs include four features with direct business value: 1) Renovate bot integration and CI workflow updates to stabilize automated dependency management within Docker environments, reducing build failures and maintenance overhead; 2) GitOps deployment events handling with webhook reception, deployment logging, and undeploy support, enabling operational visibility and safer rollbacks; 3) Custom IngressRoute processing for the staf organization with validation and mapping, enabling dynamic, organization-scoped deployment configurations; 4) GitOps configuration sync endpoint to trigger pipelines and streamline environment provisioning. Overall impact: faster, more reliable deployments, improved governance and self-service capabilities for organizations. Technologies demonstrated: Docker, Renovate, GitOps event models, webhook integrations, IngressRoute templating, API endpoints for GitOps config, and GitHub Actions.

November 2025

10 Commits • 10 Features

Nov 1, 2025

November 2025 (Altinn/altinn-studio) delivered multi-environment deployment improvements, enhanced artifact management, and real-time communication capabilities across MCP and Studio components. Emphasis on traceability, production readiness, and OCI-based deployment workflows, with targeted maintenance to improve dependency management.

October 2025

5 Commits • 1 Features

Oct 1, 2025

October 2025 performance summary for Altinn/altinn-studio focused on delivering a robust GitOps-driven deployment model, strengthening security hygiene, and enabling scalable, observable CI/CD workflows. Key business impact includes faster, safer releases, consistent environments, and improved governance across the Studio deployment pipeline.

September 2025

4 Commits • 3 Features

Sep 1, 2025

Concise monthly summary for 2025-09 focusing on key features delivered, major fixes, impact, and technologies demonstrated. This month delivered cross-platform deployment automation and localization improvements for Altinn Studio, with a focus on business value, reliability, and faster release cycles.

August 2025

9 Commits • 1 Features

Aug 1, 2025

Month: 2025-08. Focused on a large-scale refactor to centralize designer components and app templates, paired with Windows CI reliability improvements. Delivered a unified monorepo layout, updated CI/CD workflows, and reduced root-level clutter. Result: easier onboarding, maintainability growth, and more reliable builds across Windows.

June 2025

7 Commits • 4 Features

Jun 1, 2025

June 2025 monthly summary for Altinn/altinn-studio focused on strengthening runner infrastructure and build reliability to accelerate onboarding and reduce deployment risk. Delivered a set of coordinated runner and build-system enhancements across the Altinn Studio repository, with tangible business value in stability, scalability, and developer velocity.

May 2025

3 Commits • 2 Features

May 1, 2025

May 2025 — Focused on security hardening, documentation hygiene, and reliability fixes. Delivered default SameSite=Lax enforcement, removed a feature flag, cleaned README of deprecated build status links, and fixed a JSON schema array edge-case with tests; all aligned with security, maintainability, and data integrity goals.

April 2025

4 Commits • 1 Features

Apr 1, 2025

April 2025 focused on stabilizing core platform behavior, improving time handling across builds and deployments, and tightening environment controls in Altinn Studio. The work delivered reduces runtime errors, enhances traceability, and strengthens security and operational reliability for production deployments.

March 2025

2 Commits • 2 Features

Mar 1, 2025

March 2025: Delivered two key feature enhancements and a focused bug fix for Altinn Studio, delivering measurable business value through streamlined workflows and improved observability. Key features: Direct app copy usability enhancement; Gitea integration enhancements with localization and new event types. Major bug fixed: removed pull request during app copy flow. Overall impact: faster copy workflows, reduced PR noise, improved Norwegian localization, and enhanced event-driven insights. Technologies demonstrated: PR workflow optimization, dependency management (Gitea upgrade), localization, and extensible settings for new event types.

February 2025

8 Commits • 5 Features

Feb 1, 2025

February 2025 — Altinn Studio (Altinn/altinn-studio) delivered a focused set of features to improve reliability, visibility, and scalability of deployment and localization workflows, while simplifying maintenance through deprecation of legacy components and expanding CI/CD capabilities. The month established stronger guardrails for locale data, improved deployment lifecycle handling, and enhanced observability and developer productivity through Kafka-based deployment telemetry and Gitea runners.

January 2025

10 Commits • 4 Features

Jan 1, 2025

January 2025 monthly summary for Altinn/altinn-studio: Delivered foundational deployment data model improvements, introduced deployment_type, and normalized build-related data to enable more reliable deployment analytics and operational reporting. Implemented undeploy capability across environments with a Quartz-based build-status polling mechanism and updated CI/CD workflows to support decommissioning. Strengthened backend quality and reliability through warnings-as-errors enforcement, removal of FluentAssertions, DI refinements, and hub routing/Program.cs improvements, with targeted fixes for build warnings and Application Insights telemetry. Upgraded core tooling with Gitea to 1.23.1 and added repository license syncing to improve governance and compliance. These changes reduce deployment risk, improve observability, and accelerate safe, compliant deployments.

December 2024

2 Commits

Dec 1, 2024

December 2024: Altinn Studio — focused on reliability, data integrity, and correctness in release/deployment workflows. Implemented robust concurrency guard for release and deployment creation and improved handling of nil values in JSON serialization for complex types. These changes reduce race conditions, ensure consistent releases, and improve API contract fidelity.

November 2024

15 Commits • 7 Features

Nov 1, 2024

Monthly summary for 2024-11 focusing on Altinn Studio backend improvements delivering reliability, scalability, and modernization. Key outcomes include distributed request synchronization using PostgreSQL; PostgreSQL distributed cache provider; platform upgrade to .NET 9 and EF Core 9; Redis caching integration with migration; and environment-aware deployment replica scaling for altinn-designer. Additional improvements include expanded endpoint synchronization in development controller and CI/docs enhancements.

October 2024

1 Commits • 1 Features

Oct 1, 2024

October 2024 monthly summary for Altinn/altinn-studio focusing on the Maskinporten scopes management refactor and related enhancements.

Activity

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Quality Metrics

Correctness91.0%
Maintainability89.4%
Architecture88.0%
Performance84.0%
AI Usage23.4%

Skills & Technologies

Programming Languages

Azure CLIBashC#CSSDockerfileGoHTMLINIJSONJava

Technical Skills

.NET.NET MigrationsAPI DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI ManagementAPI developmentAPI integrationAssertion LibrariesAuthenticationAzureAzure Container RegistryAzure DevOpsAzure Pipelines

Repositories Contributed To

1 repo

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

Altinn/altinn-studio

Oct 2024 Mar 2026
16 Months active

Languages Used

C#JSONSQLDockerfileHTMLMarkdownTypeScriptXML

Technical Skills

API DevelopmentBackend DevelopmentDatabase ManagementEntity Framework CoreIntegration TestingRESTful APIs