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November 12, 9:30 AM - 12:00 PM. Join us for an introductory workshop on Clojure. This session is perfect for those who are new to Clojure or have less than six months of experience. Please note that registration for the conference is NOT included.

Program Content:

This workshop will introduce participants to Clojure, a modern Lisp dialect that runs on the JVM. The goal is to help participants understand the basics of Clojure, including its strengths, usage, and REPL-driven development workflow. Through a mix of demonstration and hands-on exercises, participants will explore the fundamentals of functional programming and learn about Clojure's elegant syntax and powerful abstractions.

Topics covered will include Clojure's syntax and evaluation model, data types, polymorphism, and approaches to managing state in a functional paradigm. By the end of the workshop, participants will be able to write basic Clojure programs and have a solid foundation for continued learning.

Important: Attendees must have Clojure installed on their machines before the workshop to follow along with the hands-on examples. No prior Lisp experience is required, though basic programming knowledge is recommended.

November 12, 9:30 AM - 12:00 PM. Join us for a workshop on Scicloj. This session is recommended for all levels of experience with Clojure. Please note that registration for the conference is NOT included.

Program Content:

Despite sophisticated tooling, data scientists still battle fundamental challenges day to day, like reproducibility, maintainability, and sharing their work. While traditional notebooks offer interactivity and quick feedback, they’re plagued with hidden state dependencies, version control complexity, and production deployment hurdles. Converting notebook-based analyses into production-ready code often requires extensive refactoring, untangling implicit dependencies, debugging hidden state issues, and deciphering sparse documentation. And that’s before tackling today’s reality of excessively large, unstructured data dumps typically lacking any metadata or explanation, making it difficult to find useful data in the first place.

Clojure’s data science ecosystem has been maturing rapidly. With its stable toolkit, immutable data structures, and functional paradigm, Clojure offers a compelling alternative to traditional data science workflows. Throughout 2025, we have seen more and more examples of Clojure being used as a simple and easy option for data analysis projects. This use case has driven broad-based efforts in the Scicloj community toward making our toolkit more accessible and well-known among diverse groups of practitioners beyond the typical Clojure user base of primary programmers.

This hands-on workshop will demonstrate how functional data analysis using Clojure’s libraries and tooling solves many pain points in current data analysis workflows, showcasing the increasingly standardized and consistent APIs of the Scicloj ecosystem.

Important: Attendees should have a working Clojure environment and REPL up and running before the workshop, but no experience with data science or analysis is required.

November 12, 9:30 AM - 12:00 PM. Join us for a workshop on Rama. This session is recommended for those who have at least 3 years of experience with Clojure or more. Please note that registration for the conference is NOT included.

Program Content:

Rama is a free-to-use platform for building backends at any scale, from interactive consumer applications to high-scale analytics to transactional applications. Rama enables applications to be built with dramatically less code, operated with much less infrastructure, and evolved with much less pain. This workshop teaches the nuts and bolts of programming with Rama and deploying applications to Rama clusters. No prior knowledge of Rama is necessary.

The workshop is structured as a series of mini-lectures with interactive problem-solving sessions in between utilizing the new concepts from each lecture. The topics covered include:

• The core paradigm of event sourcing and materialized views
• Rama's abstractions: depots, topologies, PStates, and modules
• Data structures instead of data models
• Dataflow programming
• Programming in terms of both "what" and "where"
• Choosing between micro-batch and stream topologies
• Creating and using depot and PState clients
• Launching and updating modules on clusters

The workshop will culminate in completing a full application containing both interactive and analytics features.

November 12, 1:30 PM - 4:00 PM: Join us for a comprehensive training program on Datomic, featuring new insights and updates, covering everything from basic concepts to intermediate knowledge. Please note that registration for the conference is NOT included.

Datomic is a general-purpose database system designed for data-of-record applications. A Datomic database is a set of immutable atomic facts called datoms. Datomic transactions add datoms, never updating or removing them, so you have a complete audit trail and the ability to query “as of” points in time. Datomic transactions are serialized in total order, providing strong ACID guarantees.

"The Amazing Day of Datomic" is a comprehensive training program that provides a solid grasp of Datomic, from basic concepts to intermediate knowledge. Participants will learn how to use Datomic effectively, understand its operations, explore troubleshooting techniques, and much more.

November 12, 1:30 PM - 4:00 PM. Please note that registration for the conference is NOT included.

FlowStorm is an IDE-independent dev tool for recording, exploring, and visualizing Clojure program execution and data. It was designed with interactive programming in mind.

Program Content:

During the workshop, you will learn how to :

• Setup FlowStorm on your system
• Use its many features to understand from a simple function to an entire system
• Programmatically explore recordings
• Extend it for your particular domains

A GitHub repo will contain several Clojure programs, so you can try everything on your own computers.

Important: A recent version of Clojure Cli tools or Leiningen.

November 12, 1:30 PM - 4:00 PM. Please note that registration for the conference is NOT included.

The biggest source of unnecessary code complexity and maintenance expense is a poor domain model.

Program Content:

This workshop will equip you with the tools to create, evaluate, and improve models for any domain. Based on the material for my upcoming book on domain modeling and 12+ years of teaching Clojure, you will be guided through exercises and discussions about what makes a domain model. Join us to deepen your software design skills that improve the maintainability and expressivity of your code.

Join us for an evening of guided discussion groups at the DoubleTree Hilton on Wednesday, November 12, from 7:00 PM to 9:00 PM. This is a space to exchange ideas, share experiences, and connect with fellow members of the Clojure community through structured yet informal conversations. A great opportunity for deeper networking around topics that matter to you.

Would you like us to assign you a seat at a table with other members of the Clojure community for lunch on Thursday, November 13?

We are organizing lunches at various casual dining spots depending on interest and availability. This is a great opportunity to meet and interact with other community members. Please note that each participant will cover the cost of lunch.

Unwind and have fun at our Board Game Night at the Charlotte Convention Center on Thursday, November 13, from 7:00 PM to 10:00 PM. Whether you're into strategy, party games, or just looking to connect with others in a casual setting, this is the perfect opportunity to relax and play after a day full of learning.

There will be a food & beverage service (snacks and non-alcoholic drinks) available on-site, starting at 7 PM.

Wrap up the conference in style at our closing celebration at Slingshot Social CL on Friday, November 14, from 7:00 PM. Expect music, games, good vibes, and one last chance to connect with fellow attendees before heading home.

Let’s toast (with a free welcome drink!) to an incredible week with the Clojure community!

Thank you for registering for Clojure/Conj 2025!

In the days leading up to the event, you’ll receive an email with the details you need for your event registration:

• Onsite Attendees: You’ll get a reminder with your QR code for event check-in and your PIN to access the Attendee App.

• Livestream Attendees: You’ll receive a confirmation with the email you registered with and your PIN to log in to the Remote Attendee Portal and access the Attendee App.

To stay connected and up to date, we strongly recommend downloading the Attendee App. It’s the best way to receive real-time notifications, explore the schedule, and keep track of all activities, especially if you’ll be joining us onsite!

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