Madis Kõosaar
Principal Consultant at GitHub
Estonia
Summary
👤
Senior🎓
Top SchoolMadis Kõosaar is a Principal Consultant and solution architect with 11 years of experience designing cloud-native, secure, and scalable systems while coaching teams to raise engineering standards. He combines deep .NET expertise (C#, .NET Core, ASP.NET Core, Blazor) with hands-on Azure, Azure DevOps, and GitHub platform work to drive DevOps adoption and CI/CD automation across enterprises. Madis is also a seasoned trainer and mentor, delivering GitHub Enterprise, Actions, and Copilot trainings that accelerate organizational tooling adoption and collaboration. He has practical migration experience—contributing backend improvements to an open-source Jira-to-Azure DevOps migrator that hardened attachments, comments, and user mapping for reliable transfers. Equally comfortable in technical strategy and implementation, he bridges business goals and developer workflows to produce pragmatic, maintainable solutions. Based in Estonia, he balances consulting and leadership roles, including CTO/co-founder duties, showing both entrepreneurial initiative and delivery focus.
10 years of coding experience
13 years of employment as a software developer
Master's degree Informatics, Master's degree Informatics at TalTech – Tallinn University of TechnologyBachelor's degree IT Systems Development, Bachelor's degree IT Systems Development at The Estonian Information Technology College
Estonian, English, Russian, German
Github Skills (9)
azure-devops-server10
csharp10
jira10
azure-devops10
migration10
dotnet-core10
apidoc9
api9
regular-expression9
Programming languages (9)
Github contributions (5)
solidify/jira-azuredevops-migrator
Nov 2019 - May 2022
Tool to migrate work items from Atlassian Jira to Microsoft Azure DevOps/VSTS/TFS.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:99 reviews, 76 commits, 61 PRs in 2 years 6 months
Contributions summary:Madis primarily contributed to the migration tool, focusing on improving the import functionality and handling various Jira-to-Azure DevOps migration scenarios. They addressed issues related to image handling in descriptions and comments, ensuring attachments are correctly migrated. Additionally, the user enhanced comment rendering, improved user mapping, and resolved link-related problems. These changes increased the accuracy and robustness of the migration process.
microsoftazure-devopsmigration-tooltfsvsts
madkoo/iOS
Jun 2015 - Jan 2022
Contributions:1 push, 1 branch in 6 years 8 months
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