Call for Speakers

Call for Speakers is closed. Submissions are no longer possible. Sorry.
finished 119 days ago

Lambda Days 2023

event starts

5 Jun 2023

event ends

6 Jun 2023


Auditorium Maximum UJ Kraków, Poland

For nearly a decade, Lambda Days has been a melting pot for research and practical application of functional programming. Every year, hundreds of developers from around Europe come together to learn from each other and get inspired.

Find out what is possible with functional programming - explore the latest in battle-tested Scala, Erlang and Haskell, experience the energy F# and Elixir bring to the table, connect with the innovators working with Elm, Luna and Ocaml, see what comes up next!

This edition is going to be only in-person, so we hope to see you in beautiful sunny Krakow!

finished 260 days ago
Call for Speakers
Call opens at 9:00 AM

16 Nov 2022

Call closes at 11:59 PM

15 Jan 2023

This event is in Central European Daylight Time (UTC+02:00) timezone.
Closing time in your timezone () is .

Dear Lambda Crowd, it's time to knock our committee's socks off with your proposals. 

We’re looking for passion projects, ambitious endeavours, cool ideas, eye-openers and brain teasers - all centred around inspiring, cutting-edge concepts related to functional programming. Our community is highly skilled, very inquisitive, motivated and open-minded. Think big and impress them with your talk!

This year Lambda Days celebrates its 10th-anniversary edition in Krakow, Poland. It is a three-track in-person conference. Speaking times are 45 minutes, which includes a minimum of 10-min Q&A and 35-min presentations, and 20 minutes, which includes a minimum of 5-min Q&A and 15-min presentations.

We’re also accepting talks for our Research Track - share your theoretical work with a large, diverse audience of scholars and practitioners. Additionally, you will have the opportunity to have your paper published in Computer Science (indexed in ESCI WoS and SCOPUS) journal. Just mark the correct field on the form to let us know if you are interested in having your work submitted for the journal.


We want to make sure our conference is as diverse as the community we represent. Do you know any researchers, programmers or experts who are a part of groups traditionally underrepresented in IT (due to gender, ethnicity or any other reason) and whose work you can recommend to our committee? Please, let them know, that our CFT is open and that we’d love to see their work! Also, you can suggest their name in the form, if you want us to check them out and possibly invite them.


  • First selection: 11 December 2022 by 23:59 CET.
  • Second Selection: 15 January 2023 by 23:59 CET. The second round in January can be cancelled if we receive enough submissions in the first round.
  • You will be informed about the status of your submission by 15 February 2022.


As of now, we have identified the following areas our audience would love to hear about:

  • Functional languages
  • Type Theory
  • Testing & Verification
  • Software and system design
  • Reactive Programming
  • Web programming
  • Computation in functional technologies
  • Applications and case studies

Is your presentation slightly outside that scope? Amaze and inspire us with your submission.


All speakers get:

  • conference attendance is free of charge
  • an invitation to all the accompanying events (speakers’ dinner, afterparty, lunch, et cetera)
  • free beverages at the afterparty
  • other small tokens of our appreciation.

The programme committee is also happy to help out with talk delivery, give early-stage feedback and get the speaker ready for the conference.

Need help covering the cost of travel and accommodation? Get us in touch with your company’s marketing department - we’ll do our best to work something out!


The most important criteria for our programme committee to choose the talk is:

  • topic - is your talk a good fit for our conference?
  • value - will our audience learn something new from your talk?
  • diversity in the agenda - have we already accepted a talk on the same subject?
  • diversity in the line-up - we want to make sure we have speakers from different communities and groups.
  • level - do we have the right balance when it comes to the beginner-intermediate-advance talk ratio?

If you chose the Research Track, additionally:

  • scientific merit - does your work present developments in functional programming (such as novel programming languages) or scientific applications of functional programming methods?


Never spoken at conferences before and are unsure if you should, and what should you talk about? Noel Rappin has a good article on this here:

"1. A conference that was limited to only people that really thought they were the most qualified person to talk would be depressing, if not completely horrific.

2. You are absolutely the most qualified person to tell me what you think on a particular topic.

3. This is how you become qualified. You study something, you teach it to other people."

What mistakes to avoid when submitting a talk? Noel Rappin also has an answer in this article:

In short: clearly identify your topic, be respectful of everyone, be interesting, but also self-aware, don't pitch your company, and submit early and often. We could also add to that - think if this conference audience is the right one for your talk (and why?).

Need more tips? We recommend Sarah Mei's article "What Your Conference Proposal is Missing":


All attendees, speakers, sponsors and volunteers at our conference are required to agree to the following code of conduct.


Code Sync and Erlang Solutions care about your data and privacy. By submitting this form you agree that your data will be processed according to our privacy policy. You can opt-out anytime from the emails you receive from Code Sync. You also agree to your submission (all the form fields) being shared with our committee members, using this Sessionize platform, who will be reviewing your submission. If your submission is successful, you agree to us adding your profile to our conference platform (Airmeet or Whova).

event fee

free for speakers

plus 15% discount code to share with your network to buy conference tickets (Very Early Bird excluded) and invitation to all the accompanying events: speakers' meet-up/dinner, afterparty, pre-conference meet up etc.