tiny ruby conf

21 November 2025

tiny ruby conf is an affordable, one day, single-track Ruby conference in Helsinki, Finland.

Brought to you by the same folks who organised Euruko 2022 and Frozen Rails 2010-2014.

→ Invite a friend to tiny ruby conf

Tickets

Tickets are available now! The earlier you buy your ticket, the cheaper it is. Buying a ticket as soon as possible is one of the best ways to support the conference.

Early €75
SOLD OUT
Regular €95
Late €115

Helsinki Ruby members get a €15 discount on their ticket. If you are a member, please check your email inbox for your personal discount code.

Optional upgrades

We have a few optional ticket extras that you can add to your ticket when you buy it.

Baseball cap (+24€)
In order to keep the ticket prices under control and to reduce waste, we don't include any swag in the ticket price. If you wish, you can add an awesome tiny ruby conf baseball cap to wear at the conference and beyond. View mock-up (subject to change).
Helsinki on Rails (+55€)
A three hour tram tour of Helsinki on the day after the conference with a professional guide. Limited availability.

Schedule

Time  
09:15 Doors open / registration
10:15 Opening
10:30 Even smaller Rubies
11:00 Break
11:15 Brewing potions with Ruby and linear programming
11:45 Lunch break
13:15 Docker – Build the Perfect Home for Ruby
13:45 Break
14:00 Unlocking the Rubetta Stones
14:30 Break
14:45 Revisiting Booleans in Ruby
15:15 Break
15:30 Level Up Your Engineering Career
16:00 Closing remarks

Note: Schedule is subject to change in the run-up to the conference. Please check back for updates.

Talks

Youssef Boulkaid

Brewing potions with Ruby and linear programming

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Brewing potions with Ruby and linear programming

Potionomics is a cozy game about running a potion shop and brewing potions. However, it can also lead down a deep rabbit hole of combinatorics, data modeling, and optimization. Join me in learning more about linear programming and how that can apply to fields from potion brewing to energy modeling!

Youssef Boulkaid

Workato

Youssef is an energy researcher turned software developer. Throughout his career, he has often worked on developer tools, drawn to the leverage they provide and the satisfaction of helping other developers become more productive.

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Chris Hasiński

Even smaller Rubies

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Even smaller Rubies

There is more to Ruby than Rails. But at the same time there is…less. This talk explores both useful and plain weird use cases for mruby and mruby/c. Starting with game scripting, going through retro consoles and finishing with auto-focus glasses. From the author of Ruby on Playstation with <3.

Chris Hasiński

Chris started programming as a kid on a Commodore 64 (which he still owns today). He enjoys working on web application performance and can often be found exploring APM tools to identify areas for optimization. He also has a strong interest in AI/ML workflows. Chris speaks just enough Japanese to hold a brief, two-minute conversation with Matz.

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Hana Harencarova

Software Engineer

Level Up Your Engineering Career with Mentorship, Pairing, and AI

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Level Up Your Engineering Career with Mentorship, Pairing, and AI

Feeling stuck in your technical growth? Don’t learn alone. Discover how to tap into mentorship, pair programming, and AI to accelerate your skills. Whether you’re early in career or going for senior roles, this session will equip you with strategies to get there faster and have fun in the process.

Hana Harencarova

Software Engineer, GitHub

Hana is a Rubyist by heart and a software engineer at GitHub. She is also a judgment and decision-making researcher turned paragliding instructor turned software developer. She fell in love with Ruby and shares her passion by teaching at Ruby Monstas Zürich, Rails Girls and co-organising Helvetic Ruby. Loves making things happen and a good cup of tea.

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Sarah Lima

Senior Development Consultant

Revisiting Booleans in Ruby

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Revisiting Booleans in Ruby

Ruby’s Booleans seem simple: just true and false, right? But under the hood and in practice, it’s way messier. We’ll talk about how Ruby interprets truth, why Booleans are often the wrong modeling tool, and how to model complex state the Ruby way.

Sarah Lima

Senior Development Consultant, thoughtbot

Sarah is a Senior Development Consultant at thoughtbot, former maintainer of Factory Bot and has extensive experience maintaining and growing ruby applications.

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Matti Paksula

Docker – Build the Perfect Home for Ruby

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Docker – Build the Perfect Home for Ruby

Rails includes a Dockerfile, but it can be optimized. Learn gem caching, layer strategies, multi-arch builds, and speeding up CI/CD. Use Docker effectively for development and production - works for any Ruby app with or without Rails.

Matti Paksula

supervisor.com

Matti Paksula is 42 years old seasoned startup and e2e testing/devops/hosting specialist who started using Ruby on Rails in 2006 and Docker in 2014. He has written numerous tools that he publishes to Github (606 public repositories and counting) under name matti (github user id 3893).

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Louis Antonopoulos

Development Team Lead

Unlocking the Rubetta Stones: Translating a Hoard of Ancient Tablets with Ractors and AI

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Unlocking the Rubetta Stones: Translating a Hoard of Ancient Tablets with Ractors and AI

The Rubetta Stones were just uncovered in an archaeological dig near Helsinki. But they immediately started decaying when they were unearthed. Deciphering them seems impossible, but with the power of Ractors and a Ruby AI assistant, maybe we can break the code before it disappears … forever!

Louis Antonopoulos

Development Team Lead, thoughtbot

Louis is a Rails developer, song-parody writer, and committed punster. He never once skied in the Olympics. Louis started as an iOS developer but couldn’t help falling in love with Rails, TDD, and the joy of not having to wait for app store approval.

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Sponsors

Avo
Ruby Sponsor
Kisko Labs
Ruby Sponsor
Bezala
Gold Sponsor
Teamtailor
Gold Sponsor
Maventa
Gold Sponsor

Would you like to see your logo here? Check out our sponsorship packages!

Venue

tiny ruby conf will be held at the Korjaamo Kino cinema. Part of the Korjaamo Culture Factory, Korjaamo Kino is a lovely little cinema located in an atmospheric and historical tram depot unit in the Töölö neighbourhood.

If you'd like to enjoy some Ruby on Rails, the Helsinki Tram Museum is right next door. Free entry, open Monday to Sunday from 11:00 to 17:00.

Korjaamo is a short tram or bus ride from the city centre and easily reachable from other parts of the city too.

Address: Töölönkatu 51 A-B, 00250 Helsinki (map)