Jørn Sandager
Software Engineer at Zetland
Copenhagen, Capital Region of Denmark
Summary
👤
Senior🎓
Top SchoolJørn Sandager is a seasoned software engineer based in Copenhagen with 18 years of experience designing and operating large-scale web and backend systems. He has a strong track record at Trustpilot driving platform and SRE initiatives—building a DynamoDB-based read store, migrating 100M+ reviews to an event-sourced architecture, and founding the company’s SRE culture to reduce toil and improve reliability. Equally comfortable hands-on or as a technical leader, he has led engineering tools and platform efforts around Docker, ECS, pub/sub and multi-account AWS strategies. His open-source contributions show deep .NET backend expertise—improving Rebus’s RabbitMQ integration and implementing database-backed file systems and bundling improvements for ASP.NET tooling. He blends academic grounding in computer science with practical product experience across e-commerce and high-throughput publishing systems, and is known for turning operational lessons into architecture and tooling improvements. Colleagues rely on him when a thorny infrastructure problem needs a pragmatic, production-ready solution.
17 years of coding experience
19 years of employment as a software developer
BSc, Business Administration and Computer Science, BSc, Business Administration and Computer Science at Copenhagen Business SchoolMSc, Software Development and Technology, MSc, Software Development and Technology at IT-Universitetet i KøbenhavnSingle subject, Computer Science, Single subject, Computer Science at Københavns UniversitetMatematisk studentereksamen, Matematisk studentereksamen at Birkerød Gymnasium
Danish, English
Stackoverflow
38,068reputation
4.8mreached
273answers
35questions
dom
top-5%
javascript
top-5%
jquery-selectors
top-5%
authentication
top-5%
jquery
top-5%
algorithm
top-1%
Github Skills (45)
algorithm10
filesystem10
exceptions10
servicebus10
messaging10
net10
databases10
dotnet10
asp-net-core10
file-operations10
message-queue10
netframework10
rabbitmq10
asp-net10
resolver10
Programming languages (7)
Github contributions (5)
n2cms/n2cms
Dec 2010 - Apr 2014
N2 CMS, an open source CMS for ASP.NET
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 commits in 3 years 5 months
Contributions summary:Jørn primarily focused on implementing a database file system implementation for the N2 CMS. They added core files for database file system, including `DatabaseFileSystem.cs`, `Path.cs` and `FileSystemItem.cs`, with a focus on using NHibernate for data persistence. The contributions involved implementing methods for file and directory management, including file and directory creation, deletion, moving, copying, and reading/writing file contents. The user also added the necessary code to integrate with the application's event broker to respond to file system events.
cmsaspasp-netasp-net-core
jetheredge/SquishIt
Oct 2011 - Oct 2011
Lets you *easily* bundle some css and javascript! Check out the Google group if you have questions!
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 commits in 1 day
Contributions summary:Jørn focused on refactoring and improving the file resolution capabilities within the SquishIt framework. They updated the FileResolver to FileSystemResolver, enabling directory-based file inclusion. Additionally, they deleted unused directory enumeration code and updated supporting projects to reflect the changes. These modifications aimed to streamline the bundling process and align with a more generic file handling approach.
bundlercssjavascriptbundlebrowserify
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