May 20, 2022


Gerald Versluis, The Netherlands
Software Engineer @ Microsoft

Gerald Versluis (@jfversluis) is a software engineer at Microsoft from the Netherlands. After years of experience working with Azure, ASP.NET, DevOps, Xamarin and other .NET technologies, he has been involved in a number of different projects and has been building several real-world apps and solutions.

Introduction to App Development with .NET MAUI

17:00 - 18:00

.NET MAUI provides an extremely flexible and powerful way to create apps for Android, iOS, macOS, and Windows, from very simple to extremely robust and complex. Is this one size fits all? Where should you start? In this session I'll run through what .NET MAUI is, how it fits in the .NET ecosystem, differences with Xamarin and how to get started yourself!

Suzanne Rijnbergen, The Netherlands
Director - ICS & Cybersecurity @ Accenture

Suzanne Rijnbergen is Associate Director ICS and Cybersecurity at Accenture and leads the Resources Security business in the Netherlands. She has 15+ years of experience in information security, both in IT and OT, and is experienced in advisory services for C-level clients on supply chain security risk and third-party risk management.

Supply Chain Security - Get Ready Or Get Breached

19:00 - 20:00

Join Suzanne as she provides simplified and concrete insight into the evolution of supply chain threat, plus practical learnings that you can apply directly in your organisation to drive change and build a cyber-resilient future together.Join Suzanne as she provides simplified and concrete insight into the evolution of supply chain threat, plus practical learnings that you can apply directly in your organisation to drive change and build a cyber-resilient future together. About 70% of businesses are particularly vulnerable to cyberattacks through their supply chains. According to institutes, such as the Dutch National Intelligence Services and ENISA, this number is rising and poses a threat to the continuity of businesses. In this session, Suzanne Rijnbergen will focus on examples of supply chain attacks by cybercriminals that illustrate the challenges organisations face. She will detail different national and international initiatives ongoing in this area and provide insightful knowledge on how organizations can start securing their supply chain themselves.



Code of Conduct

Our Pledge

We as members, contributors, and leaders pledge to make participation in our community a harassment-free experience for everyone, regardless of age, body size, visible or invisible disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation.

We pledge to act and interact in ways that contribute to an open, welcoming, diverse, inclusive, and healthy community.

Our Standards

Examples of behavior that contributes to a positive environment for our community include:

Community leaders are responsible for clarifying and enforcing our standards of acceptable behavior and will take appropriate and fair corrective action in response to any behavior that they deem inappropriate, threatening, offensive, or harmful.

Community leaders have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, and will communicate reasons for moderation decisions when appropriate.


This Code of Conduct applies within all community spaces, and also applies when an individual is officially representing the community in public spaces. Examples of representing our community include using an official e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event.


Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the community leaders responsible for enforcement: Edgar Tichelaar: or Angela Schooneman: All complaints will be reviewed and investigated promptly and fairly.

All community leaders are obligated to respect the privacy and security of the reporter of any incident.

Enforcement Guidelines

Community leaders will follow these Community Impact Guidelines in determining the consequences for any action they deem in violation of this Code of Conduct:

  1. Correction
    Community Impact: Use of inappropriate language or other behavior deemed unprofessional or unwelcome in the community.
  2. Consequence: A private, written warning from community leaders, providing clarity around the nature of the violation and an explanation of why the behavior was inappropriate. A public apology may be requested.
  3. Warning
    Community Impact: A violation through a single incident or series of actions.
  4. Consequence: A warning with consequences for continued behavior. No interaction with the people involved, including unsolicited interaction with those enforcing the Code of Conduct, for a specified period of time. This includes avoiding interactions in community spaces as well as external channels like social media. Violating these terms may lead to a temporary or permanent ban.
  5. Temporary Ban
    Community Impact: A serious violation of community standards, including sustained inappropriate behavior.
  6. Consequence: A temporary ban from any sort of interaction or public communication with the community for a specified period of time. No public or private interaction with the people involved, including unsolicited interaction with those enforcing the Code of Conduct, is allowed during this period. Violating these terms may lead to a permanent ban.
  7. Permanent Ban
    Community Impact: Demonstrating a pattern of violation of community standards, including sustained inappropriate behavior, harassment of an individual, or aggression toward or disparagement of classes of individuals.
  8. Consequence: A permanent ban from any sort of public interaction within the community.


This Code of Conduct is adapted from the Contributor Covenant, version 2.0, available at


Eduard Keilholz

Eduard is the initiator of DotnetFriday. Eduard is very passionate about technology and techniques required to create high quality software! He likes to share this passion by organizing sessions for technologies that enable you to write better software. Due to his contributions to the community, Eduard was awarded by Microsoft with the MVP Award.

Jan-Willem de Wagt

Jan Willem is the engagement officer of DotnetFriday. He is very eager to meet new people and works hard on making each DotnetFriday event a success. His mission is to fill our venue with attendees.

Annejan Barelds

Annejan has been an avid software developer since 2006. And while his career took him to several non-development roles, he keeps coming back to development: exploring new technologies, building great software with it, and sharing his knowledge with others, is what makes him tick. For DotnetFriday, he works with Eduard and Jan on making sure that we deliver great content at all our events.

Angela Schooneman

Angela is responsible for the marketing and communication at 4Dotnet. Raising the profile and reputation of 4Dotnet, creating and implementing marketing campaigns that provide value added content and being part of the events to meet you is making her happy.

Simone Versluijs

Simone is a marketing and communications officer at 4Dotnet. She loves organising events and her goal is to exceed the expectations of its visitors. She is excited to organise DotnetFriday and to meet you in person!