I am the co-founder of SoftwareMill, head of R&D at VirtusLab, where I primarily generate code using Java, Scala, Rust and other interesting technologies. I am actively involved in open-source projects, such as Ox, Jox, Tapir, sttp, and others. I have also been a speaker at major conferences, including JavaOne, Devoxx, GeeCON and ScalaDays.

In addition to writing closed- and open-source software, I spend my free time exploring various programming-related subjects. Any ideas or insights I gain usually end up with a blog (https://warski.org/articles).

Alexander Nemish is the CTO and founder of Lantr, blockchain solutions and R&D labs, where he leads development of Scalus, an open-source platform for building Cardano smart contracts and decentralized applications in Scala 3.
He is a software engineer specializing in functional programming, type theory, metaprogramming, compilers, and blockchain systems, working primarily in Scala, Haskell, and Rust. Previously, he was an engineer at IOG (Input Output Global), where he contributed to the design and implementation of Marlowe, a domain-specific language for financial smart contracts on Cardano, and earlier he built server-side platforms in the banking sector.
He is a long-time member of the Scala community and a past speaker at ScalaUA.

Amir Montazery is the Managing Director and Cofounder of Open Source Technology Improvement Fund, Inc (OSTIF). OSTIF is a Chicago-based organization focused on directly helping open-source software projects improve their security posture. Amir comes from a background in Finance, IT and Internal Auditing, applying years of experience to help develop OSTIF’s processes and partnerships. Furthermore, Amir is responsible for negotiating and organizing over 12,000 hours of security-focused work for organizations like Google and Amazon Web Services along with groups like Mozilla Foundation and Open Source Security Foundation (OpenSSF).

Scala compiler engineer and a contributor to the Scala 3 language. Currently working on Scoverage and sbt 2.

Antonio is a Scala engineer, EPFL graduate, and functional programming enthusiast. A Typelevel contributor and Scala Ambassador, he's participated in Google Summer of Code as both student and mentor.

I am a member of the Typelevel community and a core maintainer of several projects, including Cats Effect. I also serve as the Executive Director of the Typelevel Foundation, where I help grow our community and support industry adoption of our libraries. I am interested in functional programming, concurrent runtimes, and how community and technology interact in open source :) ask me how you can get involved with Typelevel!

PhD candidate at the University of Zurich in computer vision, with a focus on applied deep learning in document recognition and echocardiography.

Scala enthusiast working on Scala-based open-source machine learning projects such as DimWit, DeepWit, and ScalaGrad.

Bill Venners is president of Artima, Inc. He is the lead developer of the ScalaTest and Scalactic open source libraries and coauthor of Programming in Scala, Fifth Edition and Advanced Programming in Scala, Fifth Edition.

I am the founder of Rock the JVM, a learning platform for the Scala and Kotlin ecosystems, which now contains more than 20 course and 250+ hours of video material on Scala, Kotlin, functional programming, and a variety of libraries and tools.

I’ve taught more than 100000 developers so far, and trained high-performing teams at some of the most renowned companies in the world (e.g. Adobe, Apple, Microsoft, Google, ING and others).

I’ve also taught more than 50000 kids to code (not Scala… yet).

Eugene is a maintainer of sbt, and an engineer with years of experience working on build tooling at companies like Lightbend and Netflix. He enjoys long walks looking for Döner kebab, and functional programming.

Writing Scala since 2009 (2.7 with Lift). Passionate about Functional Programming with Type Driven Development. Amateur in formal methods. Mostly work with data and distributed systems.

Gordon Cooke is the founder of Scala Teams and founder/CTO of UpStart Commerce. He brings decades of experience leading engineering teams and architecting e-commerce and distributed systems. His career spans hands-on architecture, technology leadership, and building companies, including co-founding Spark::red. At Scala Teams, he focuses on helping organizations build scalable, maintainable software through specialist Scala and functional programming expertise. He founded the company in response to challenges he experienced firsthand: finding senior Scala talent and building reliable distributed engineering teams.

I'm a Research Assistant at Oracle working on interoperability with GraalVM. I've also been part of the team at EPFL behind Scala 3 for the last couple of years.

Postdoctoral Fellow at the Digital Technology for Democracy Lab at the University of Virginia.

I'm a passionate software engineer living in the JVM land, where I mostly code and teach Scala and functional programming.

I believe that software craftsmanship is technology-agnostic, thus I try not to limit my portfolio to a narrow set of technologies.

When sharing my knowledge, I always keep in mind that a working example is worth a thousand words, so you are very likely to see me in action during a live coding session.

B.Eng. in Cybersecurity @ AGH University | Software Engineer Junior @ VirtusLab | Scala 3 Compiler & Tooling Maintainer

PhD Student @ University of Waterloo

I am very interested in how people interact with technology. I believe that programming language design is critical as it is one of the key interfaces where intent and reality meet. Also fan of eating, and music.

When I was 15 years old I started my own software company. Eager to learn more, after high school I started with the Computing Science track at Utrecht University in the Netherlands. I earned a Master's degree in Applied Computing Science with my thesis on improving the scheduling at a public transport company. After that I worked for several start-ups and large corporations as a full-stack developer.
Currently I am working as a Principal Software and Machine Learning Engineer at DHL eCommerce in the Netherlands where I turn ideas into successful applications of Machine Learning and AI.
In my spare time I like to participate in the Scala Compiler Spree in order to solve complex bugs in the scala compiler.

I'm a Scala developer with a background in fine arts and music production. My sculptural practice has long revolved around folding and unfolding. Writing Scala turned out to be less of a departure than I expected.

I work at Tiko and have contributed to the open source Sounds of Scala web audio library as part of Google Summer of Code 2024 under the Scala Center.

I am a long time enthusiast for type level and generic programming in Scala. A few years back worked on getting a decent chunk of Shapeless 2 ported to Scala 3 PR as part of my Google Summer of Code project (though sadly it is blocked by Scala 3 bugs and differences). Since then I have worked on developing perpsective, my own generic programming library for Scala 3.

Katrina comes from a non–computer science background and was first introduced to Scala while working at JPMorgan Chase. She credits much of her Scala knowledge to hands-on experience within her old team, where she worked on building and maintaining large data model ingestions and managing distributed systems.

Krzysztof is Head of Developement Productivity @ VirtusLab, where he manages teams creating world-class developer’s tooling (mainly focused on LLMs, Bazel and IDEs), and maintaining core parts of the Scala ecosystem. As a developer, Krzysztof specialised in Developer tooling for Scala, like Scala CLI.

L is a Google Summer of Code Contributor at Typelevel working on an optimized immutable linked list datatype project for the cats-collections library. He graduated in 2026 from McGill University with a Bachelor of Arts in Computer Science where he first became interested in functional programming. L is excited to be part of the Typelevel community and is looking forward to learning as much as possible from the experience.

Lukas is a longtime contributor to the Scala project, he worked on many language features, the collections library, compiler performance and the JVM bytecode optimizer. In recent years, he has been leading the development and maintenance of Scala 2.13. He's a member of the SIP committee and contributes to the governance of the Scala project.

Hello there,
I'm a Product Marketing Manager in the Scala Plugin team at JetBrains. In practice, my job is very close to being a developer advocate. Among other things, I talk at conferences (well, d'oh), make YouTube videos, and teach Scala at a university. In free time... In free time I do the same, which makes my work-life balance really tricky. But I also love archeology, martial arts, and writing sci-fi and fantasy stories.

I'm a Scala engineer and open source maintainer focused on functional systems, observability, and distributed systems. I'm the maintainer of otel4s, a Typelevel OpenTelemetry instrumentation library for Scala, and I contribute across the Typelevel ecosystem. My work centers on making production systems easier to understand, diagnose, and operate through practical observability.

I am a lecturer at the Department of Computer Science at ETH Zurich. Besides teaching, I am doing research in medical data science. I have helped to create various open source libraries in this domain, such as Scalismo and most recently DimWit.

Marcin is an engineer specializing in performance, building next generation storage systems. In his spare time, he contributes to Scala open source projects, including Akka Serialization Helper and Cyfra.

I am an undergraduate CS student at the Warsaw University of Life Sciences and a soon-to-be Google Summer of Code contributor. I've been passionate about functional programing since middle school, and I'm a dedicated Unix enthusiast. Outside of computing, I'm deeply into punk rock music.

Martin Odersky is the creator of the Scala programming language and a professor at EPFL in Lausanne, Switzerland. He is also the founder and chairman of the Scala Center. His research interests include programming languages, type systems, and compiler technology. At EPFL, he leads the Programming Methods Laboratory, where he implements the cutting-edge research ideas into the Scala programming language.

Writing code for pleasure.

Scala developer for 10 years, Chimney co-maintainer for 8. Blogged at Kubuszok.com, wrote Things you need to know about JVM (that matter in Scala).

Matt Bovel is a PhD student at EPFL, where he works on type systems and program verification across two labs: the LAMP, led by Martin Odersky, and the LARA, led by Viktor Kunčak.

Mike is CEO of Active Group in Tübingen, Germany. He is an internationally recognized expert on functional programming and software architecture. He's written many research papers on the subject as well as several books. He's a member of iSAQB's strategy council and curator of its curricula on Functional Software Architecture, Domain-Specific Language, and Formal Methods, and also works on its Foundation Curriculum. Moreover, Mike runs the BOB developer conference.

Nada Amin is an Associate Professor of Computer Science at Harvard SEAS and Associate Faculty at the Kempner Institute, where she combines programming languages (PL) and artificial intelligence to build intelligent systems that are correct by construction. Before Harvard, she was a University Lecturer in Programming Languages at the University of Cambridge and a member of the Scala team at EPFL, where she completed her PhD. Earlier, she was a software engineer at Google and earned bachelor’s and master’s degrees from MIT. She recently co-founded Midspiral to bring verification to mainstream AI-assisted software development.

I'm a principal at Inner Product, where I help companies succeed in their software projects. I've written several books on programming, the most recent being Functional Programming Strategies. I maintain open source projects at Creative Scala.

Coding through life, one function at a time.

Patryk Zieliński is a Scala developer and open source contributor currently working on Metals and Scala 3 compiler. He enjoys hackathons, CTFs, programming languages, and figuring out how developer tools really work.

I am a software engineer with more than 15 years industry experience, including over 10 years working with Scala in production systems and enterprise environments. Worked at Evolution Gaming, Paddy Power Betfair (now Flutter Entertainment), Twilio, Workday, currently at MongoDB. Over my career, have seen how both object-oriented and functional approaches behave in large-scale real-world systems, and how architectural choices shape long-term complexity.

I work on the Scala 3 compiler team as a Product Manager and am a member of the Scala Core team. I have also been a maintainer of Scala CLI since early 2022. Doing Scala tooling for a long while now.

Software engineer with 8 years in the JVM ecosystem, building event-driven logistics systems in Scala. Currently a team lead, focused on the move to Scala 3 and direct style: Pekko to Ox, plus macro build-time optimizations. Background in Kotlin/Spring and TypeScript/React.

Computer Science Addicted

Rikito Taniguchi is a Scala compiler engineer at VirtusLab, working on Scala 3 and bringing Scala to WebAssembly. He is passionate about compilers and programming language theory, and spends his free time bouldering and playing video games.

Salim Belkhir is a Backend and SRE Engineer building high-availability blockchain platforms.

He writes and maintains core Scala infrastructure code and drives the operations for 400+ production nodes and data-service deployments.
His engineering focus centers on the intersection of type safety and systems automation, like custom blockchain nodes, and recently designing capability-typed sandboxes to enforce secure information flows for autonomous desktop and deployment AI agents.

Solal is a compiler engineer at LAMP, working on the Scala compiler.
Previously, he worked on static code analysis at Sonar, after getting his PhD in automated formal verification from EPFL.

Szymon is an engineer that is working on System-on-chip interconnects at Arteris. At the same time, he contributes to open source projects, such as the Scala compiler and Cyfra. In the past, he was a member of the Scala compiler team, and he was the organiser of Kraków Scala User Group.

Tomasz has worked with multiple programming language tools through the years trying to provide a productive environment for other developers to interact with. Currently, team lead of Scala Open Source team at VirtusLab.

Scala developer for 10 years, obsessed with type shenanigans and compile time safety, software craft, and epistemology.

Polyglot full-stack developer and functional programming enthusiast. Scala Developer Advocate @ VirtusLab. Values quality over quantity. Permanent learner with a severe information dependency problem. Enjoys conversations about philosophy and all things related to the mind's inner workings. Loves mountains, biking, and hiking.