EuroClojure 2027

Dear Clojurists, dear friends,

EuroClojure 2027 is almost eleven months away, but the event is starting to take real form. We are happy to share the first concrete updates with you about how the celebration of twenty years of Clojure will unfold.

The venues are confirmed

We can now also confirm the venues for workshops and talks. The workshop day on Wednesday, May 19 will take place in the beautiful stately halls of Břevnov Monastery. The main conference program on Thursday, May 20 and Friday, May 21 will be held at OREA Hotel Pyramida. For the closing social event, we will return to Břevnov Monastery.

For the final evening, set in the historic cellars of Břevnov Monastery, we are considering a format inspired by a traditional Czech and Moravian feast, with generous food, music, and plenty of space for informal conversations. The current plan is a cimbalom band and a selection of classic regional dishes. We would love to hear your thoughts on this idea and whether it sounds like something you would enjoy.

Two venues, one neighborhood

The two venues are in the same part of Prague, less than two kilometers apart. Getting between them is easy, whether you take a five-minute tram ride (four stops) or a short, level stroll. After a full day of talks, it may be a pleasant way to stretch your legs and let the conference thoughts settle for a moment.

This combination of venues allows EuroClojure 2027 to offer something truly distinctive and exciting. Alongside a strong conference program and networking opportunities, we’re preparing an experience that will be closely tied to Prague itself as an integral part of what will make next year’s event stand out.

Prague is a city shaped by centuries of history, so it felt natural to host part of the event in a setting where that history is present in the walls, courtyards, and atmosphere. Břevnov Monastery offers that genius loci, making the workshop day a particularly compelling part of the overall experience.

OREA Hotel Pyramida is an excellent complement. The brutalist, somewhat imposing facade wraps current infrastructure needed for the conference days, including a large hall for keynotes, space for parallel tracks, technical facilities, catering; in short, a professional and welcoming conference environment.

This arrangement is convenient for those who would like to stay close to the main conference venue. The hotel will hold a block of 100 rooms at a discounted rate for attendees to reserve. This gives you the option to stay right at the center of the event, share a generous breakfast, save yourself the morning commute, and start each day on time.

In the vicinity of the monastery, we have also reserved Hotel Adalbert, a historic hotel on the Břevnov grounds, held exclusively for the conference. Stay there, and after the evening in the cellars your room will be just a two-minute walk away, from chair to bed.

We will share the reservation details for both hotels together with the ticket sales, as soon as they go online.

If you can, consider arriving a day or two earlier and staying on a little longer as Prague rewards an unhurried visit. And if you are thinking of combining the conference with a family holiday or a longer stay, please let us know as early as possible. The sooner we hear from you, the better we can help you plan or recommend complementary activities for partners, families, and friends.

What you told us

So far, 295 of you have signed up for the EuroClojure 2027 mailing list. Out of these sign-ups, 81 included a content suggestion, a speaker recommendation, or a general note. We have read everything carefully, and your input is already helping to shape what EuroClojure 2027 will become.

Several themes stood out very clearly.

There is strong interest in practical Clojure from the real world: production systems, business and public-sector use cases, long-lived codebases, architecture, data-driven design, domain modeling, tooling, REPL workflows, frontend and full-stack work, and Clojure outside the usual runtime environments.

There is also a clear interest in AI, LLMs, and agentic programming — but not as hype. What we hear in the feedback is a desire for grounded, honest talks about what is actually useful, where Clojure fits well, where it breaks, and what these systems can teach us about our own work.

Data-oriented topics also appeared strongly, such as Datomic, Datalog, XTDB, Datahike, Datalevin, RDF/OWL, graph databases, schemas, and broader approaches to modeling information, domains, and systems.

When it comes to speakers, the suggestions formed a broad and encouraging mix of well-known names and potential new voices. The most frequently mentioned were Rich Hickey, Michiel Borkent, Christian Johansen, and Peter Strömberg. Further suggestions included, among others, Alberto Miorin, Anders Murphy, Arne Brasseur, Christian Weilbach, Colin Fleming, Daniel Glauser, Daniel Slutsky, Dustin Getz, Isaac Silva Borges, Malcolm Sparks, Nikita Prokopov, Roman Liutikov, Sean Corfield, Thomas Heller, and William Byrd.

There were also requests for people from the Clojure core team, SciCloj, JUXT, Flexiana, and other active voices from the wider ecosystem.

There was interest in inspirational people and topics from beyond Clojure, even adjacent to technology yet crucial to building reliable systems and to operating and evolving them over many years, even decades.

We are taking these suggestions seriously as we think about the program, and they are already helping guide our thinking. If there is someone you would like to see speak, or a perspective you feel is missing, reach out and tell us. Your input may directly influence who we reach out to and how we build EuroClojure 2027.

People want practical Clojure, meeting the realities of teams, organizations, and long-lived systems. Clojure that is useful, concrete, curious, and reliable with a community open to strange, joyful, and unexpected approaches.

We would like to also attract newcomers, people interested in what the Clojure ecosystem or even just the way of thinking can offer them. This opens opportunities to better understand the struggles of complete beginners, experts in other fields, and business needs. It's possible the usage of languages will change dramatically over the years because of the LLM-based heavy machinery. This already leads to an explosion in capability but also complexity, and while we as a community have broad and deep experience tackling complexity, we will face many challenges. Clojure is inspiring far outside its community; however, its past successes don't necessarily translate to future ones.

Thank you for filling out the form, starting conversations with us, and investing the time to improve the odds that EuroClojure 2027 will be a conference to remember. These inputs and thoughts influence the plans for EuroClojure 2027.

More updates will follow as the work continues. For now, we are happy to say that the dates are set, the venues are real, and EuroClojure 2027 is moving forward.

Thank you for helping us make it an event worth the long wait.

The EuroClojure 2027 Team