Event Details

Pre-con workshops
September 17, 2018
Pre-con workshops
4 deep-dive, full-day sessions with our best speakers!
Conference Dates
September 18-19, 2018
Number of participants
1200 Participants
EXPO XXI, Warsaw, Poland
About 20 Professional Speakers

Welcome to .NET DeveloperDays 2018!

About Us

.NET DeveloperDays is the biggest event in Central and Eastern Europe dedicated exclusively to application development on the .NET platform. It is designed for architects, developers, testers and project managers using .NET in their work and to those who want to improve their knowledge and skills in this field. The conference content is 100% English, making it easy for the international audience to attend.


.NET DeveloperDays 2017

The 2017 event was a huge success, with more than 800 developers from 30 countries in attendance.

Watch the video

Convince your boss

In today`s economy every penny counts and so is your time out of your office.
You are at this website so you probably know that your time at .NET DeveloperDays 2018 will pay off.

Now let`s convince your boss.

See details


Tim Huckaby
Tim Huckaby
Executive Chairman and Founder of InterKnowlogy
Neal Ford
Neal Ford
Director/Software Architect/Meme Wrangler
Sasha Goldshtein
Sasha Goldshtein
Microsoft C# MVP
Shawn Wildermuth
Shawn Wildermuth
Visual Studio and Development Technologies MVP
Daniel Marbach
Daniel Marbach
Microsoft Azure MVP

Full speakers list will be published soon.

If you want to be a .NET DeveloperDays speaker please send your session proposal using “Call for papers” form.



Pre-cons are full-day training sessions.

We organize pre-cons conducted as a lecture or as a hands-on workshop.


Number of seats at each pre-con is limited. Register early to avoid disappointment!

Pre-con Agenda (September 17, 2018)

07:30 – 09:00 | Registration, coffee, cakes
09:00 – 13:00 | Workshop session (with coffee breaks)
13:00 – 13:45 | Lunch
13:45 – 17:00 | Workshop session (with coffee breaks)


Full session list will be available in June 2018.


Early Bird

799 PLN / 199 EUR
799 PLN / 199 EUR
Conf + Pre-con:
1399 PLN / 349 EUR

  • Starts: December 4, 2017
  • Ends: January 31, 2018



1099 PLN / 274 EUR
999 PLN / 249 EUR
Conf + Pre-con:
1799 PLN / 449 EUR

  • Starts: February 1, 2018
  • Ends: April 30, 2018



1599 PLN / 399 EUR
1399 PLN / 349 EUR
Conf + Pre-con:
2599 PLN / 649 EUR

  • Starts: August 1, 2018
  • Ends: September 7, 2018


All prices are net prices. VAT at 23% applies to all registrations.
Available payment methods: Bank transfer / PayPal

What’s included in the price?

2 days full of great technical content delivered by amazing speakers
Access to the Expert Zone (NEW!)
Conference bag full of goodies from our sponsors
FREE conference T-shirt
FREE conference after-party on Sept. 18th
Tasty food, including full lunch and coffee breaks throughout the day


Gold Sponsor

Are you interested in becoming an event sponsor? Click button below and fill contact form.

Media partners


EXPO XXI is a modern place on the map of Warsaw, professionally prepared to all kind of special events. The popular facility, located on the Prądzyńskiego Street No. 12/14, guests during the year more than 200 different events including exhibitions, conferences, internal events, fashion shows, seminars, banquets, fairs, cultural and sports events and concerts. Annually, EXPO XXI is visited by hundred thousand people.

More informations you can find at official website of the venue.

Full address of the venue:
Pradzynskiego 12-14 Str.


The conference is about software development using .NET Framework. At the conference, you will hear about programming languages, technologies, tools and practical problems that every person working with .NET can encounter.
Topics of sessions include C#, F#, Visual Studio, ASP.NET, Xamarin, architecture, project management and related. Full agenda will be available soon.
.NET DeveloperDays main conference takes place on September 18-19, 2018 (Tuesday - Wednesday), with full-day pre-conference sessions (optional) taking place on Monday, September 17th.
.NET DeveloperDays will be held in XXI EXPO in Warsaw, at Prądzyńskiego 12/14. Visit the venue page for more information about the venue.
Please check Spam folder, next verify anti-spam settings of your inbox. If you didn't find an email, try new registration using another e-mail address.
Since the place of service delivery is in Poland, we have to charge VAT on top of the net amount and the "reverse charge" scheme does note apply in this case (it's different from export of services or goods to another EU country). You can, however, reclaim the paid VAT from Polish tax authorities under EU VAT return scheme. More on that here: http://europa.eu/youreurope/business/vat-customs/refund/index_en.htm.
The electronic ticket, that you problably received on your e-mail inbox, is the confirmation of participation in the event. If you lost it, don't panic - we'll send tickets to all Attendees the few days before the event. Even if you were absent at the list of attendees, you would take part in the event after quick payment at the service desk.
You can pay by credit card via PayPal. During registration please choose PayPal as your payment method and send your payment via PayPal to the e-mail address indicated on your proforma invoice.
The official conference language is English. All conference sessions will be presented in English.
Sure! As soon as you register and pay for your participation in the conference, contact us and we will prepare a visa invitation letter for you. After registration an payment, please contact us for your visa invitation letter. We will need your full name, date of birth, nationality and passport number. In the unlikely case that your visa application is refused, we will refund your conference fee in full (requires a consulate statement denying visa).
No, conference sessions don't demand additional enrollment. However, if you are registered for one of full-day training sessions on September 17, you are assigned to this session. Change of full-day training session that you are registered for is possible not later than 14 days before the event, using a user panel of registration system.
According to point IV.4 of the Regulations available at registration system, we don't send paper invoices. According to Polish law, unsigned invoice has the same importance as signed - thus, in order to get paper invoice, it's enough to print the electronic version of it.
Warsaw is very well connected, both within Poland as well as internationally. Warsaw has two major airports: Okęcie Airport which serves traditional airlines flying to a huge number of destinations within Europe, and Modlin Airport (located 35km from the city center) which serves low-cost airlines flying to destinations in Western Europe.
Please log in to your account in registration system and click the "Edit registration" button. Make all necessary changes, next click "Save" and confirm. Both you and new Partcipant will receive the e-mail confirmation. Prepare the following information:
- first name, last name (of new Participant)
- email address
T-shirt size
- participation in conference party (no/alone/with accompanying person)
- current job position
- job experience
Yes, there is a paid parking lot at the venue.
Yes, we will have a WiFi available for the conference attendees.
No, we will not be streaming the event live. However, most of the sessions will be recorded and published on one of video hosting platforms hosting at a later date.


Registration open!

From today ( December 4th) you can register to .NET DeveloperDays 2018! See also website of our new conference Cloud DeveloperDays.

Save the dates!

.NET DeveloperDays 2018 will be held in EXPO XXI in Warsaw between 17th and 19th September 2018. Save the dates!


”Really liked complete organization of conference and quality of talks - Michele Leroux Bustamante, Daniel Marbach, Sasha Goldshtein are fantastic, people that everyone would like to work with. ”


.NET DeveloperDays 2017 Participant

”It was a great experience and I'm looking forward for the conference next year.”


.NET DeveloperDays 2017 Participant

”Very good, interesting lectures, fine food, too less coffee makers, too less baskets (effective staff, but there are things you won’t leave on the table for staff to clean). Eventually I’m very satisfied, see you next time!”


.NET DeveloperDays 2016 Participant

”Really liked complete organization of conference and quality of talks - Michele Leroux Bustamante, Daniel Marbach, Sasha Goldshtein are fantastic, people that everyone would like to work with.”


.NET DeveloperDays 2017 Participant


DATA MASTER is a company with many years of experience in organizing the conferences for the IT industry in Poland, including the DeveloperDays series: .NET DeveloperDays, Cloud DeveloperDays and JOIN! – the database conference.



ul. Powstańców Śląskich 2-4
53-333 Wrocław, Poland
VAT Number: 8971789230

Event Location

EXPO XXI, Warsaw

12-14 Prądzyńskiego St, Warsaw


EXPO XXI Website



We would like to invite you to our other events!