Dotnetos 2020

Premium .NET Conference

01-02 October 2020

Warsaw - Poland

The Dotnetos Conference is premium, two-day conference focused on the .NET Core and .NET performance. Top-notch speakers from around the globe and companies like Microsoft or JetBrains. Chance to meet well-known people from .NET community in person!

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Add to My Calendar 2020-10-01 09:00:00 2020-10-02 18:00:00 Europe/Warsaw Dotnetos Conference Warsaw Marriott Hotel Szymon Kulec, Konrad Kokosa, Łukasz Pyrzyk

Dotnetos Conference 2020 postponed to 2021

Over the last several weeks, we have been carefully monitoring the COVID-19 situation and its impact on various areas of our lives. After consulting with our partners, staff, and speakers, we have made the difficult decision to postpone the event to the next year. The Dotnetos Conference 2021 will take place on 13-15 October 2021.

We feel that we have an obligation to ensure safety for attendees, speakers, and staff, to do anything that we can to prevent the spread of the virus and to protect the community and their close ones.

This is a very tough decision for us. We'll push forward to come back strong in 2021 with an incredible .NET Conference. We hope you all stay well and healthy through this year, so we can see you next year for an amazing event!

Who will be DOTNETOS this time?

What is the agenda?


Dotnetos Conference is delivered to you by three Dotnetos:
Łukasz Pyrzyk
Szymon Kulec
Konrad Kokosa


Choose your favorite pass for the event.

Blind Bird
768 PLN
179 EURO
  • From: 01/12/2019
  • To: 31/01/2020
Sold out
Early bird
1024 PLN
239 EURO
  • From: 01/02/2020
  • To: 30/04/2020
Normal bird
1512 PLN
352 EURO
  • From: 01/05/2020
  • To: 31/08/2020
Angry bird
2048 PLN
478 EURO
  • From: 01/09/2020
  • To: 02/10/2020

*These prices are net prices to which you must add 23% VAT.


Register to one of the awesome pre-conference workshops:
30 September 2020
Konrad Kokosa
Konrad Kokosa
From regular business app to zero-alloc C#

Nowadays a lot is being said about reducing allocations in .NET, like in ASP.NET Core (Kestrel) or various serializers. But how regular business application can benefit from the same approach? It seems obvious it will not be justified for every code we write everyday. But, still we can imagine some scenarios where even business app can benefit. On the example of such scenarios we will learn all advanced tricks we can use in modern C# to reduce allocations and the GC pressure.

What the attendee will learn:
Explore various aspects of advanced memory management (including awareness of struct and refs usage, confidence in using the newest Span and Memory types) Usage of high-level, efficient data structures like Channels and Pipelines Profiling, to identify what parts of an app should be optimized Benchmarking, including micro benchmarks and measurements on production environment

  1. developing and improving a ASP.NET Core application
  2. removing GC pressure
    1. efficient JSON serialization and live data migration
    2. common sources of allocations and avoiding them
    3. Channels
    4. Pipelines
  3. low-level unsafe optimizations
    1. Span and Memory
    2. stackalloc - our super-fast allocator
    3. structures all the way - struct and ref structs
PLN 1024
EUR 239
30 September 2020

PLN 1024
EUR 239
Not available
30 September 2020

PLN 1024
EUR 239
Not available

These prices are net prices to which you must add 23% VAT.


Two great days

Two days full of knowledge about .NET internals and .NET performance. Your developer's life will not be the same! And meals will be great too!

Excellent speakers

Top-notch speakers about .NET performance and internals from Poland and abroad. You know them for sure, let's hear them live!


A professional and pleasant place to comfortably deal with the topics presented - Warsaw Marriott Hotel!


Small surprises will be there also! You won't return empty-handed (besides great knowledge and networking opportunity).


They love it. Read what the previous attendees had to say!

Frequently Asked Questions
When more details will be published?

Full agenda will be published in May

What will be presented there?

Detailed agenda is to come. But be prepared for low-level, yet still practical knowledge about JIT, Garbage Collection, memory usage, unsafe code, benchmarking, and so on, and so forth.

How will the meeting look?

This is two day conference with around one-hour talks. Of course, there will be time for breaks with some nice food and beverages, including lunch. Then less official part comes in the evening between two days to have conversations in more relaxed atmosphere!

In what language will the talks be given?

All talks, including those from Polish speakers, will be given in English. This is by design international conference!

What payment types do you accept?

All payments accepted by Evenea are accepted.

Who we are?

Dotnetos is an initiative of three .NET fans. We love this technology and we love performance. We love to get deep into how it works. And we love to share the knowledge we gain. We organize tours, conferences (both public and on-site) and trainings. Contact us if you or your company are interested!

Accessibility information

Foyer and conference room are situated on the ground floor. They are easily accessible. All the facilities can be accessed via elevator and/or stairs.


Event is supported by easily recognizable companies and products which we use everyday.

Gold sponsors:



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Warsaw Marriott Hotel

Warsaw, Poland, 00-697

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