Mainframe Computing
Meet other local people interested in Mainframe Computing: share experiences, inspire and encourage each other! Join a Mainframe Computing group.
43
members
1
groups
Frequently Asked Questions
Yes! Check out mainframe computing events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.
Discover all the mainframe computing events taking place this week here. Plan ahead and join exciting meetups throughout the week.
Absolutely! Find mainframe computing events near your location here. Connect with your local community and discover events within your area.
Mainframe Computing Events Today
Join in-person Mainframe Computing events happening right now
.NET 10 Decoded
**Presentation**
Back in November 2025 Microsoft released the latest version of .NET, C# and Visual Studio.
Our good friend and local MVP Erik Ejlskov Jensen, has picked out some of the most exciting new stuff that came with the new version and will give us his view on the most useful.
Furthermore my own employer will share some experiences from our experiences when upgrading to newer versions of .net.
!!The presentation will be in English and will NOT be available online.!!
!!Be aware that no-shows is registered!!
!!Full name is required to get access to the venue!!
* 16.30 - 17.00 Doors open
* 17.00 - 17.10 Welcome by CNUG (10 min)
* 17.10 - 17.20 Introduction to KMD and Edlund (Host) (10 min)
* 17.20 - 18.00 First half of decoding (Erik) (40 min)
* 18.00 - 18.30 Networking break (30 min)
* 18.30 - 19.10 Second half of decoding (40 min)
* 19.10 - 19.30 Real world upgrading (Edlund) (20 min)
* 19.30 - 20.00 Announcements and Goodbye (30 min)
Abstract painting, art and cocktails
Join Bien Contemporary for a unique evening of creativity where painting meets cocktails! Unleash your artistic side in a relaxed and social atmosphere, perfect for both beginners and experienced artists.
Sip on delightful cocktails while our talented instructors guide you through a step-by-step painting session. Immerse yourself in the world of art as you create your very own masterpiece while mingling with fellow art enthusiasts.
This event combines the perfect blend of artistic expression and socializing, making it an unforgettable experience. Don't miss out on this opportunity to unwind, unleash your creativity, and indulge in some delicious cocktails at Bien Contemporary's Painting & Cocktails Night!
get tickets online here - https://biencontemporary.dk/event/
The Wife of Martin Guerre by Janet Lewis
The Wife of Martin Guerre (first published 1941) is a short novel by American writer Janet Lewis based on the story of Martin Guerre, the 16th-century French peasant who apparently returned home to his wife after a long absence but was later revealed to be an impostor. The novel has its origins in research Lewis made into trials based on circumstantial evidence, after reading in-depth about famous trials turning on circumstantial evidence, which prompted her to write a pamphlet describing the risks of using it.
Danish Language Cafe
https://www.facebook.com/korsgadesprogcafe/
Come and join our cosy language cafe. We recommend that you already speak some Danish (maybe around module 3 on sprogskole) so you can join and understand the conversation. We are mostly two Danes joining, so we can make two groups: beginners and more advanced. We are having conversations while drinking tea. If you have an exam coming up, we can speak about your exam subjects some of the time.
Small donations (10-20 kroner) are appreciated, to support the rent of the place.
You find us in the basement of Korsgade 19. It is a door to the right of the main entrance.
Zen Meditation
Join us for Zazen and tea.
18.45 Arriving, getting settled (please note doors close at 19.00)
19.00 -20.25 Zazen (seated meditation) and Kinhin (Walking meditation) in intervals. Myoin will offer basic instructions in the first Zazen period, the following periods we sit together in silence.
20.25 short Zen Buddhist ritual chant and dedication to loved ones who are sick or suffering
20.35 We offer tea and give time for you to ask questions and receive support for your practice.
20.55 Samu (cleaning up)
21.00 Thank you 🙏
We practice Zazen, seated meditation as taught in the Zen tradition, keeping it simple and in the present moment.
The group is non-profit and donation-based. Any profits generated from these events will support the practice of group members and help finance future events.
This group is open to all, you need no special skills, knowledge or religious commitment to participate.
We have everything you need in the room, you can sit on a chair, sofa, meditation bench or cushion as you prefer.
Myoin speaks Danish or English as required.
Warm welcome
Game Audio Playthrough #47 - LEGO Voyagers
🏆**Winner of the Best Audio award at SpilPrisen 2026 – LEGO Voyagers**
🏆
We are proud to present a game audio playthrough featuring the award-winning sound design of LEGO Voyagers. Meet Adam Zacho and learn how he designed the audio for the co-op game, including the challenge of giving two bricks distinct personalities through voice acting—performed using his own voice. 🎙️
During the evening, Adam will walk us through how the soundscape was crafted brick by brick, how it was implemented using FMOD and Unity, and how the audio-driven haptic feedback was carefully designed and integrated. 🎮
**Where:** Games Denmark, Vesterbrogade 19, København
**When:** Thursday, February 26st 2026, 18.30 – 21.30
**Schedule:**
18:00: Entrance with complimentary snacks and drinks
18:30: Presentation by Adam Zacho
19.30: Break
19.45: Q&A
20:30: Drinks & mingle
21:00: Thank you for tonight. Voluntary afterparty at nearby bodega.
This event is arranged by Game Audio Denmark & hosted by
Daniel Nielsen, Nikolaj de Haan and Marc Hasselbalch.
Thanks to [Games Denma](www.gamesdenmark.dk)rk for providing the location!
Check out other events by [Game Audio Denmark](http://www.gameaudiodenmark.dk)
Join our Discord [here](https://discord.gg/MqQD77VFfV)
Thursday Meeting (CPH City Toastmasters)
**About**
At CPH City Toastmasters Club, we are committed to providing a safe and supportive space for members to develop their public speaking skills. Whether you're a newcomer or a seasoned speaker, you'll find an environment that fosters your personal growth.
**Feedback and Learning:** Our club is a nurturing environment where feedback and constructive criticism are the building blocks of growth. We also offer a diverse range of speaking opportunities for our members to improve their communication skills.
**Networking:** Toastmasters meetings are an excellent opportunity to connect with like-minded individuals who share your passion for public speaking and personal development. Expand your network and build lasting friendships.
**Positive Vibes:** We believe in learning while having fun! Our meetings are filled with positivity, encouragement, and laughter. We're here to support you every step on your journey to becoming a confident public speaker.
We normally have around 15 to 20 people at each meeting. If you are interested, RSVP today! And take the first step toward unlocking your full public speaking potential. Together, we'll raise our glasses to the art of communication. 🥂
See you at the meeting!
You can also find us on our Facebook page:
[CPH City Toastmasters](https://www.facebook.com/cphcitytm)
Mainframe Computing Events This Week
Discover what is happening in the next few days
Hack The Box and DDC: Hacker Day for Beginners
Join us on Saturday 28th of February. This is a hybrid event that will take place simultaneously online and in person, where all cybersecurity enthusiasts in CPH are welcome to join.
There will be two events happening simultaneously. One, a DDC training session for new hackers. And a second, where we will be pwning HTB boxes at all levels.
DDC event requires external registration: [https://www.eventbrite.dk/e/1981570429497](https://www.eventbrite.dk/e/1981570429497 "https://www.eventbrite.dk/e/1981570429497")
**The event**
📍 DTU, building 303A, Room 045
📅 28th of February, from 13:00 to 20:00 (edited)
🎁 Prizes and raffles!
**Q&A**
* Q: Who is this for?
Everybody is welcome, we have a bit for everybody.
* Q: How can I participate?
Register for the event, and if you want, show up at DTU in building 303A :)
* Q: What to bring?
A computer!
* Q: Can I participate using my own HTB account?
Yes you can
* Q: Who organizes this event?
We are the organizing team behind the DTU Hacker Lab. Our goal is to bring people together and explore all aspects of cyber. We want to make cybersecurity accessible and help the curious to season themselves.
**Contact**
* Find us here: [https://linktr.ee/dtuhackerlab](https://linktr.ee/dtuhackerlab)
* Email: [hackerlab@compute.dtu.dk](http://hackerlab@compute.dtu.dk/)
**Support**
Send us an email at [hackerlab@compute.dtu.dk](http://hackerlab@compute.dtu.dk/)
We are currently looking for partners and collaborators to improve our events and work with other communities.
The role of the STATE, your NANNY or not? Nudging? behavioral economics? FORCE?
**“The Role of the State (!) — Nanny, Neutral Referee, or Quiet Manipulator?”**
Freedom, Responsibility, Behavioral Economics, and Who Really Decides
The modern state no longer just taxes, regulates, and enforces laws. It nudges. It designs choices. It subtly shapes behavior—often in the name of health, safety, equality, or efficiency. But where is the line between helping citizens and controlling them?
This isn’t a left–right debate or a policy seminar. It’s a philosophical conversation about power, freedom, and the assumptions we make about human behavior.
***
**Topics we’ll touch on:**
* Is the “nanny state” a myth—or a growing reality?
* Behavioral economics: helping people choose better, or bypassing free will?
* Are nudges respectful guidance—or soft coercion?
* Who decides what “good behavior” actually is?
* Can freedom survive if choices are engineered?
* Do people need protection from themselves—or from the state?
* And ultimately… what kind of citizens does this model create: autonomous adults or well-managed subjects?
Casual discussion. No background in economics or political theory required—just curiosity and a willingness to reflect honestly. Whether you value strong institutions, personal freedom, or feel torn between the two—you’re not alone.
Let’s examine the invisible hands shaping our choices—and ask how much guidance we really want.
Board Games and Drinks
Let’s kick back for a cozy evening of board games, drinks, and good company at Bastard Café—Copenhagen’s favorite spot for game lovers!
Whether you’re fiercely competitive or just here for the vibes, this is a relaxed night to connect with fellow LGBTQ+ folks and allies over games, laughter, and casual drinks. No pressure, no expectations—just a safe, friendly space to unwind and meet new people.
What to expect:
• A huge selection of board games (from classics to quirky new ones)
• Drinks, snacks, and a super chill atmosphere
• A welcoming crowd—come solo or bring a friend
• Open to all LGBTQ+ folks and allies
New to board games? No worries! We’ll have easy games to jump into, and someone around to help explain the rules.
**When:** 7:00 pm
**Where:** Bastard Café, Norrebro, [Borgmestervangen 21, 2200 København N](https://www.google.com/maps/place//data=!4m2!3m1!1s0x465253b66dc40059:0x12169a150cbd27bc?sa=X&ved=1t:8290&ictx=111)
https://www.google.com/maps/place//data=!4m2!3m1!1s0x465253b66dc40059:0x12169a150cbd27bc?sa=X&ved=1t:8290&ictx=111
**Cost :** The table costs some money which we pay upfront so around ***65DKK*** per person for a drink and a seat at the table
Come for the games, stay for the good vibes!
PS: *If you’re new or coming alone, just drop a message—we’ll make sure to save you a seat. Contact +4591652695 on whatsapp for more details*
CPH AI Impact Network (2nd meeting): Impacts of AI on the job market
Hi everyone!
We’re excited to have the second event of the CPH AI Impact Network!
After our good kickoff event at the end of January we’ve met and brainstormed and decided for our next event on March 1, 11-13, at Studiestræde 24.
For this two hour event we will feature two presentations, one technical and one with a societal focus. This will give participants an opportunity to learn new AI skills whilst discussing recent research on the governance of AI.
11-12: Labour market impacts (International AI Safety Report 2026)
12-13: How to use AI in your daily life or at work (experience of a Product Manager)
Let us know whether you’re coming and we’ll love to see you!
Founders Running Club :: Copenhagen
**Founders Running Club** (FRC) brings founders, investors, tech, creative people and startup enthusiasts together for weekly easy runs and networking. We like to be comfortable when we run and finish with coffee and conversations. Choose your pace or follow a pacer—pets, friends, family, are welcome.
🗓️ Launched in San Francisco, July 16, 2022
🌍 Now in 35+ cities
📅 Running + Networking events + Community
**Join the community** [http://foundersrc.com/chats](http://foundersrc.com/chats)
**Stay updated**:
Instagram [http://instagram.com/foundersrc/](http://instagram.com/foundersrc/)
Podcast [http://podcast.foundersrc.com/](http://podcast.foundersrc.com/)
LinkedIn [http://linkedin.com/company/foundersrc/](http://linkedin.com/company/foundersrc/)
Strava [http://strava.com/clubs/foundersRC](http://strava.com/clubs/foundersRC)
Website [http://foundersrc.com/](http://foundersrc.com/)
*NØRREBRO LIB*Welcome to DK:From Bureaucracy to Social Life incl. Networking#200
Important Note: we will be changing venue every other week (from Main Library on Thursdays to Nørrebro Library on Fridays), so please check event details.
**Dear Expat (or Dane!),**
New to Denmark or looking to deepen your roots in Copenhagen? This session is your **one-stop guide** to navigating both the practicalities of life in Denmark and the social scene that makes it so special.
Join us to:
* **Demystify Danish bureaucracy:** Get tips on CPR registration, housing, healthcare, and taxes—so you can settle in with confidence.
* **Explore Copenhagen’s social life:** Discover hidden gems, expat-friendly activities, and local spots to build your social circle.
* **Share experiences and connect:** Meet fellow expats, swap stories, and leave with new friends and a network of support.
This workshop is perfect for **newcomers and long-term expats** alike. Bring your questions, your curiosity, and your enthusiasm for making Denmark feel like home.
Looking forward to connecting with you,
**Maria Depesova**
*Your Host & Expat Community Builder*
Hafnia Hallen - 60 DKK - Artifical Grass - Indoor - 7 v 7
You are only confirmed when u have paid. Playing 7v7.
Cost: 60 kr
Mobilepay: 9539SH
Revolut: revolut.me/frederwnn
Mainframe Computing Events Near You
Connect with your local Mainframe Computing community
Inaugural Meeting
Join the inaugural meeting of the Columbus Vintage Computing Club (CVCC)! Get to know others in the vintage computing space and get hands on time with a Commodore VIC-20 and various Palm Pilot PDAs!
We will use this time to get to know each other, share projects we've been working on and plan the future of the CVCC.
We'll be at the Hilliard Library in Meeting Room 2A at 6:00 PM - 8:00 PM
Building Agents with Microsoft Foundry
We will show a variety of methods for building agents that run in Microsoft Foundry. This covers the different types of agents: Prompt, Multi, and Hosted, as well as the development lifecycle using evals and traces.
CBusData - Discover the Power of Window Functions
Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems:
* Using running totals
* Performing operations in intervals
* Identifying data gaps and islands
* Performing aggregates without losing detail
Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.
From Idea to Working App in Minutes: The Agentic Development with Amazon Kiro
Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way.
In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents.
In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding.
What You'll Learn - Core Kiro concepts and development philosophy
Feature evolution: pre and post re:Invent 2025
Practical examples: API creation, hooks, and steering docs
Live coding demonstration with real-time problem solving
Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows.
**Speakers Bio:**
Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale.
[https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/)
Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry.
Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives.
Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation.
https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/)
**THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/
**DIRECTIONS**
Franklin University
Fisher Hall
300 E. Main St, Columbus, OH 43215
Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8
Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map.
NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct.
**Want to sponsor the pizza and/or bar tab?**
Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com
DoJo (Informal Python Meeting)
**New Dojo Location!**
**Draft Day Columbus**
1130 Dublin Road
Columbus, OH 43215
We're going to try a new dojo location for a few weeks and see how it works
Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead.
We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)
Go Build & Learn
Meeting @ Improving's office in Downtown Columbus, near Cosi. Parking is paid, food & drink are free!
This time we're hanging out after the long winter break. We are going to look at a group-member's project used to help learn the fundamentals of Go, and if time allows, we can take a look at how we like to build Go projects using AI.
Spec-Driven Development with GitHub Spec-Kit - Barret Blake
**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you.
The building address is 4450 Bridge Park
The entrance is 6620 Mooney St, Suite 400
You will need to scan your ID at the door to get a visitor badge.
**Abstract**
*Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation*
Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification.
You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written.
This talk will cover:
--What spec-driven development is (and what it isn’t)
--How GitHub Spec-Kit fits into modern developer workflows
--Using specs to align product, engineering, and AI-assisted development
--Real-world examples of turning specs into implementations with confidence
Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects.
**YouTube Link**
TBA





















