Typelevel

@typelevel.org

We do functional programming together!

Last year, I debuted at #ScalaDays with "A Typelevel Retrospective", reflecting on my open source journey with @typelevel.org. This year, I'm back with "A Typelevel Prospectus", sharing exciting updates in our tech and governance. Join me to learn who we are, how we work, and why to get involved!

Scala Days@scaladays.org · 6d ago

At #ScalaDays 2026, Arman Bilge shares what a year since Typelevel became a nonprofit Foundation looked like from the inside, what has worked so far, and where they are heading next. Learn more about the session: scaladays.org/sessio... 12-13 October. Berlin.

Promotional graphic with a portrait of a man, a “SPEAKER” label on the left, “Arman Bilge” on top, with the ScalaDays logo at the bottom.

Learn about open source security from Typelevel TSC and Security Team member Antonio Jimenez! His talk will share what we learned from the @securitylab.github.com in the @github.com Secure Open Source Fund. P.S. Going to Scala Days in Berlin? Join our co-located Typelevel meetup! lu.ma//iyv37emv

Scala Days@scaladays.org · last wk.

Open Source security has never mattered more. Antonio Jimenez at #ScalaDays 2026 on what Typelevel learned inside GitHub's Secure Open Source Fund, and what the EU Cyber Resilience Act means if you ship Scala into the EU. More: scaladays.org/sessio... 12-13 October. Berlin.

Promotional graphic with a portrait of a man, a “SPEAKER” label on the left, “Antonio Jimenez” on top, with the ScalaDays logo at the bottom.

Giovanni Ruggiero's talk at #ScalaDays will feature the Typelevel stack—particularly the application of #otel4s for feeding runtime telemetry back into the code-generating pipeline as #ScalaCheck property tests!

Scala Days@scaladays.org · 4w ago

AI coding assistants make you faster, and without discipline they leave you with a fragile codebase. At #ScalaDays 2026, Giovanni Ruggiero shows a workflow that uses Scala's types and tooling to get correct LLM code with no technical debt. Learn more: scaladays.org/sessio...

Scala Days speaker graphic on a red background. Headshots of Giovanni Ruggiero." Text reads "Speaker" and "Agile Lab" featuring the ScalaDays logo beneath.

I am excited to speak at the Scala Enthusiasts Meetup on April 29 in my hometown of Boston! In my talk, we will dive into the design and engineering that enable the unique "superpowers" of Cats Effect and learn how to leverage them to build scalable applications. www.scalateams.com/events/bosto...

April 2026 Boston Area Scala Enthusiasts Meetup — Scala Teams

Join the Boston Area Scala Enthusiasts for in-person meetups with guest speaker Arman Bilge, networking, and discussions for Scala developers of all levels. Reserve your spot today!

scalateams.com

Cats Effect v3.7.0 is here! This is a relatively small but mighty release that brings full support for Scala Native 0.5: you can now write multi-threaded apps using polling I/O and compile them to native binaries. Stay tuned this week as the release train continues 🚂 github.com/typelevel/ca...

Release v3.7.0 · typelevel/cats-effect

This is the fifty-ninth release in the Cats Effect 3.x lineage. It is fully binary compatible with every 3.x release and fully source-compatible with the 3.7.x lineage. What's Changed This is a rel...

github.com