Lambda Days
is a one of a kind experience in the functional world.

Lambda Days is a place where academia meets industry, where research and practical application collide.

2021 Lambda Days goes virtual but also becomes a fundraiser

Once again we join forces with Trends in Functional Programming (TFP) and Trends in Functional Programming in Education (TFPiE) so that for four days you can be at the centre of the functional programming world.

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!

Schedule of Lambda Days Conference 2021 is in the Central European Time Zone: 12.00:18.00 (CEST)

Schedule of Lambda Days Conference 2021 in the Central European Time Zone (CET) 


Day 1

February 16, 2021

Day 2

February 17, 2021

Day 3

February 18, 2021

Day 4

February 19, 2021


This year we want to make sure our impact is tangible and lasts. See what happens when you commit to #CodeForGood.  2021 Lambda Days goes virtual but also becomes a fundraiser. Each of our 6 keynotes will choose a charity we will donate to in their name.

Want to support this initiative even more? You can donate extra to the fundraiser in the registration section.



Call For Papers

This year, due to an online format, Lambda Days committee will solicit presentation for all our tracks. Still, you can submit your paper either to TFP or TFPiE tracks.

22nd International Symposium on Trends in Functional Programming

The symposium on Trends in Functional Programming (TFP) is an international forum for researchers with interests in all aspects of functional programming, taking a broad view of current and future trends in the area. It aspires to be a lively environment for presenting the latest research results, and other contributions.

More information can be found HERE.

Submission deadline for pre-symposium review: 20th November 2020.

Submission deadline for draft papers: 15th January 2021.

International Workshops on Trends in Functional Programming in Education

This year many teaching programmes have had to make a rapid transition to online teaching, and we explicitly solicit papers that explore this area of teaching functional programming.

After the workshop (16.02), presenters are invited to submit (a revised version of) their article for review. The PC will select the best articles that will be published in the Electronic Proceedings in Theoretical Computer Science (EPTCS).

More information can be found HERE.

Submission deadline: 11th January 2021.

Programme committee

John Hughes

Co-Designer Of Haskell And Quickcheck

Mary Sheeran

Professor at Chalmers

Steven Proctor

Functional Geekery / DFW Erlang user group

Lennart Augustsson

Principal Programmer, Epic Games

Michał Ślaski

Technical Lead @Erlang Solutions


Want to join one of the most exciting IT conferences in Europe free of charge? Join our team as a volunteer!







As always we’re doing our best to make sure our conference is as diverse and awesome as the community we serve.

Thanks to the support from Standard Chartered we can distribute 10 tickets among participants from groups underrepresented in IT.

Apply to get yours!

First deadline: 31/01/2021 (recipients chosen)

Second deadline: 05/02/2021 (if recipients do not confirm, tickets are redistributed)






Let's have a lunch together

Great news! If you missed our Lambda Days catering and you live in Krakow (or areas), you are now very welcome to make an order and have a Lambda lunch at your place!

Special 10% discount code works for all orders at Modern Catering shop with a delivery between 15th and 20th February 2021. Code: LAMBDA21.


To respond your requests, for the first time we have created Lambda Days e-shop with conference swag! You can now not only participate in our Lambda Days 2021 virtual experience, but also order LD t-shirts, sweatshirts, mugs and many more items, from the comfort of your couch.

Please note, Code Sync the organisers of Lambda Days, do not charge any additional fees or make any profit from the sale of these items. All items are ordered directly with Spreadshirt but are branded with the official Lambda Days branding. The store was created for our community but is a third party supplier. Any issues with the items should be directed to the supplier and not Code Sync.

Code of Conduct

All attendees, speakers, sponsors and volunteers at our conference are required to agree with the following code of conduct. Organisers will enforce this code throughout the event. We are expecting cooperation from all participants to help ensuring a safe environment for everybody.

Our conference is dedicated to providing a harassment-free conference experience for everyone, regardless of gender, sexual orientation, disability, physical appearance, body size, race, or religion. We do not tolerate harassment of conference participants in any form. Sexual language and imagery is not appropriate for any conference space, including talks, workshops, parties, Twitter and other online media.

Please bring any concerns to the immediate attention of the event staff, or contact our Event Coordinator, Barbara Trojecka using our contact form. We thank our attendees for their help in keeping the event welcoming, respectful, and friendly to all participants.