Scala Days 2023

Seattle & Madrid

CFP closed at  February 20, 2023 15:30 UTC

The 11th edition of Scala Days will take place at:

SEATTLE, US-WA, June 5th - 7th (training 4th-5th) MADRID, SPAIN, September 12th-14th (training 11th - 12th)

For over ten years, Scala Days has brought developers, researchers, and companies together to share their experiences and new ideas around creating applications with Scala and related technologies, like Spark, Kafka, and Akka. Scala Days provides a unique opportunity for Scala users to interact with the contributors to the language and related technologies and connect with fellow developers.

The organizers invite experts in the field of Scala and its applications in business, academia, and the broader community to submit presentations by February 20th, 2023.

The conference aims to provide up-to-date and practical knowledge on Scala for software developers, software architects, team leads, and researchers.

Scala Days seeks to provide topics relevant to developers using Scala in various businesses. You’ll find some examples below. While planning a talk, you should consider which aspects of your topic are most relevant to your audience. Please take into account that the knowledge of your audience varies. For previous talks, you can also check out our YouTube Channel.

CFP Description


We are looking for talks covering different areas of Scala. Suggested topics for submissions include but are not limited to:


  • Functional programming fundamentals
  • Types
  • Concurrency and parallelism

Experience reports

  • Industrial adoption
  • Open source
  • Mentoring
  • Teaching
  • Community

Libraries and applications

  • Distributed systems
  • Machine learning
  • Big data
  • Databases
  • Others


  • Programming methodologies
  • Deployment
  • DevOps
  • Security issues


  • Compilers and virtual machines
  • IDEs
  • Testing frameworks
  • Build tools
  • Next generation tooling