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Kasper Halkjær Jensen

@kasperhalkjrjensen

Technical Lead at Kollab who replaced a legacy Silverlight system with a Blazor application and introduced AI-assisted development workflows.

Denmark

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At Kollab, I replaced a legacy Silverlight system with a new Blazor application and moved the solution from Azure DevOps to GitHub, with one-click deployment through GitHub Actions. I also introduced shared AI-assisted development workflows and built a Claude-based intake flow that turns requests into Jira tasks for developer review and customer approval.

At Netcompany, I was technical team lead on systems for the Danish Ministry of Immigration and Integration. I owned solutions across .NET and Angular that handled sensitive personal data under strict GDPR and EU data-residency requirements, and included API integrations with other government agencies.

I’ve also built Denmark’s pavilion platform for World Expo 2020 Dubai and developed VR applications in Unity for architecture research at Aalborg University. My work spans C#/.NET, TypeScript, and SQL Server, with experience in architecture, CI/CD, and customer-facing technical delivery.

Experience

Work history, roles, and key accomplishments

Technical Lead

Kollab

Jan 2026 - Jun 2026 (5 months)

Technical Lead on one of Kollab's largest customer engagements, owning system architecture and technical direction on a .NET and SQL Server stack. Replaced a legacy Silverlight system with a new Blazor web application and introduced AI-assisted development workflows.

.NET SQL Server Blazor Azure DevOps GitHub Actions Claude GitHub Co Pilot Scrum Code Review AI assisted Development

Senior Software Engineer

Kollab

Nov 2024 - Dec 2025 (1 year 1 month)

Developed in C#/.NET and Microsoft Dynamics 365 Business Central (AL) across several customer projects. Contributed to architecture decisions and clarified technical requirements directly with customers.

C#.NET Microsoft Dynamics 365 Business Central Architecture

IT Consultant (Technical Team Lead from 2022)

Netcompany

Apr 2021 - Sep 2024 (3 years 5 months)

Technical team lead for a smaller development team on the ministry's systems, owning complete solutions from frontend to backend handling highly sensitive personal data under strict GDPR and EU data-residency requirements. Led remediation of SQL injection vulnerabilities and mentored new colleagues.

.NET .NET Core Angular SharePoint GDPR API Integration SQL Injection Mentorship Code Review

Developer and Team Lead

Danish Business Pavilion & Expomatch

Aug 2020 - Mar 2021 (7 months)

Built the platform for Denmark's pavilion at World Expo 2020 Dubai and led three developers while coordinating with a design and content team.

Team Leadership Platform Development

Developer (Contract)

Spreeglee.com & Cloud City Spritten

Nov 2019 - Jun 2020 (7 months)

Developed C# tools and websites, including a sales-report tool that informed purchasing decisions.

C#Web Development

Web Developer

Self-employed (Freelance)

Jan 2008 - Nov 2019 (11 years 10 months)

Built and maintained client websites, including hosting and client communication.

Web Development Hosting Client Communication

Research Assistant

Aalborg University

Apr 2017 - Jun 2018 (1 year 2 months)

Developed VR applications in Unity for architecture research and supervised student project groups across several semesters of the Medialogy programme.

Unity VR Research Student supervision