Felix Hargreaves
Senior Application Engineer
Kolding, Region of Southern Denmark, Denmark
Summary
👤
Senior🎓
Top SchoolFelix Hargreaves is a Senior Application Engineer with a decade of experience building backend systems at The LEGO Group, grounded in a strong functional-programming mindset and deep Scala expertise. He focuses on projects that matter and enjoys collaborating with teams that inspire better solutions and continuous learning. Felix contributes to notable open-source work such as adding HTTP4s server features to the popular tapir library, demonstrating practical skill in API tooling and interoperability. His background spans academia and industry—from teaching programming and a PhD stint at the University of Southern Denmark to hands-on engineering and build-server management at Unity Studios—giving him a rare blend of pedagogy and production experience. Based in Kolding, Denmark, he balances technical rigor with human priorities as a devoted father and husband who values impactful, successful projects. Colleagues can expect thoughtful, functional designs and a steady contributor to both internal knowledge sharing and the wider Scala ecosystem.
10 years of coding experience
5 years of employment as a software developer
Bachelor, Computer Science, 12, Bachelor, Computer Science, 12 at University of Southern Denmark
English, Danish, German
Stackoverflow
43reputation
8kreached
0answers
1question
Github Skills (8)
akka-http10
http4s10
scala10
http9
functional-programming9
typesafe8
type-safety8
sorting6
Programming languages (12)
Github contributions (5)
softwaremill/tapir
Dec 2018 - Jan 2019
Rapid development of self-documenting APIs
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 5 PRs, 26 comments in 15 days
Contributions summary:Felix contributed to the development of an HTTP4s server implementation for the tapir library. Their work focused on adding features like handling different media types and body encoding/decoding within the HTTP4s framework. They also fixed a bug related to method checking in the server. This work involved modifications to the core server logic and test files within the project.
functional-programmingendpointsobservabilityhttp4ssttp
hejfelix/Frase
Aug 2015 - Feb 2019
Contributions:176 commits, 1 PR, 118 pushes in 3 years 6 months
compilerfraseprogramming-languageinterpreter
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