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.
18 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.
cms
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.
cssjavascript
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.