Android

KotlinLeeds 2026

This edition has ended

KotlinLeeds 2026 ran Oct 15–16, 2026 at Leeds Playhouse in Leeds, United Kingdom. It is an Android conference. ConferenceGrid lists 24 speakers, 1 sponsor and 22 sessions. Dates for the next edition are not announced yet.

Lineup updated Aug 21, 2026 · dates verified May 5, 2026

KotlinLeeds is the UK's first dedicated Kotlin conference, held in the north of England. Founded in 2025, this non-profit event is run by community volunteers and brings together Android developers, Kotlin Multiplatform pioneers, and backend engineers to learn, share, and grow. Building on the success of SwiftLeeds, the conference offers world-class sessions…

Visit the official siteRegister
24Speakers
1Sponsors
22Sessions
10Companies · in total

Speakers

Programmed at KotlinLeeds, in alphabetical order.

Andrea Della Porta
Mobile Manager @ Capgemini · Capgemini
Ariella Mendel
Senior Android Engineer & Adjunct Professor of Android
Ayako Hayasaka
Software Engineer at LY Corporation · LY Corporation
Bruce Hamilton
Ktor Technical Lead
Coming Soon
Internet
Dinorah Tovar
Google Developer Expert on Android
Dmitry Jemerov
Co-creator of Kotlin · JetBrains
Elvis Chidera
Staff software engineer · Delivery Hero
Ivan Canet
Software Engineer
Jessica Randall
Android Enthusiast
Julien Salvi
Lead Android Engineer @ Aircall · Aircall
Kazuki Chigita
Software Engineer at MIXI, Inc. · MIXI, Inc.
Klemens Strasser
Indie Developer
KotlinLeeds
The Playhouse · Leeds
Leeds Playhouse
[View Venue Pack](https://swiftleeds.co.uk/pdf/Leeds_Playhouse.pdf)
Michael Gerasymenko
Mobile at ElevenLabs Inc. · ElevenLabs Inc.
Mina Vojdanitafreshi
Fastned, Backend engineer · Fastned
Nikita Bobko
Open source contributor. ex-JetBrains, ex-Kotlin
Noam Efergan
Self taught iOS developer and general nerd
Our Sponsors
[![Screenshotbot](https://swiftleeds-speakers.s3.eu-west-2.amazonaws.com/33DC9E64-56A1-4F44-8CE9-478C0459E2B2-logo-dark.png)](https://screenshotbot.io/)
Pamela Hill-Galloway
Developer Advocate at JetBrains · JetBrains
Sam Cooper
Author of Kotlin Brain Teasers

Sponsors

The companies behind the program. Tiers as disclosed.

Screenshotbot

Agenda

Selected from 22 sessions.

  • 10:00 – 10:45

    Advanced DSLs in Kotlin

    Kotlin has powerful support for building DSLs. In this talk we’ll explore all the existing techniques and language features used to build powerful DSLs for your applications. We’l…

  • 10:00 – 10:45

    Javascript is Dead: the Past, Present, and Future of Full-stack Development

    Over the span of my career, I've seen Javascript evolve from a simple browser scripting language into the most popular programming language in the world. While some might love it, …

  • 10:00 – 10:45

    Opening Keynote

    More details coming soon 👀

  • 10:00 – 10:45

    The Art of Caring

    Our platforms are flooded with new applications every single day. Standing out is hard, and in an age of AI, it’s only getting harder. Yet Art of Fauna managed to do exactly that …

  • 10:45 – 11:15

    When "Refresh" is too slow: Making your app Real-Time

    Most mobile apps still rely on polling, pull-to-refresh, or the pushes to synchronize with the backend. As apps scale, this approach quickly breaks down, leading to stale UI and fr…

  • 10:45 – 11:30

    The Dark Corners of Kotlin Multiplatform

    Kotlin Multiplatform is powerful, flexible, and full of promise - but it’s not all smooth sailing. Behind the glossy headlines and official documentation lie subtle bugs, platform …

  • 11:30 – 12:15

    Coroutines vs. Threads: The True Cost of a Context Switch

    We've all been told that coroutines are "lightweight" and threads are "expensive." But what does this really mean at the OS and hardware level? This talk goes beyond the Kotlin API…

  • 11:30 – 12:15

    HTTP/3 in Production: What the Numbers Actually Say

    This talk presents empirical findings from a production A/B test comparing HTTP/2 and HTTP/3 across a globally distributed food delivery platform spanning 18 markets and serving mi…

  • 11:45 – 12:15

    Swift Export: Where We Stand

    Swift Export, the much-anticipated project from the JetBrains team, has been in progress for some time and is currently in the Experimental state. The project’s goal is to make cal…

Quick answers

When is KotlinLeeds 2026?
KotlinLeeds 2026 ran Oct 15–16, 2026 at Leeds Playhouse in Leeds, United Kingdom.
Where is KotlinLeeds 2026 held?
KotlinLeeds 2026 was held at Leeds Playhouse in Leeds, United Kingdom.
Who is speaking at KotlinLeeds 2026?
ConferenceGrid lists 24 speakers, including Andrea Della Porta (Mobile Manager @ Capgemini, Capgemini), Ariella Mendel (Senior Android Engineer & Adjunct Professor of Android) and Ayako Hayasaka (Software Engineer at LY Corporation, LY Corporation).
Who sponsors KotlinLeeds 2026?
ConferenceGrid lists 1 sponsor: Screenshotbot.
Company intelligence

An audience of 10 companies, parsed from the program.

Ten companies in attendance.

The numbers below are derived from the speakers, sponsors, and exhibitors on this page, cross-referenced into one ledger. They are the only thing here that 10times.com cannot tell you.

Who's in the room
0All threespeak · spons · exh
1Sponsoringsponsor only
9Speakingspeaker only
Speakers by seniority
  • Manager / Lead417%
  • Engineer · IC1146%
  • Other roles938%

Of 24 speakers · classified by free-text title

Most-represented companies
#CompanyRolesSpeakers
1JetBrains4
2ScreenshotbotSponsor-
3Aircall1
4Capgemini1
5Delivery Hero1
6ElevenLabs1
7Fastned1
8Leeds1
9LY Corporation1
10株式会社MIXI1
Sponsors by tier
unspecified1
100% of 1