Informatics

Let’s reboot the DC Postgres Meetup series! This inaugural meeting will be hosted by John Porvaznik and Eddie Pickle and all are welcome. We’re actively looking for speakers, co-hosts, event spaces and other folks that want to help bring this group back to life. If you can’t make it but want to be involved in the future, please let us know. John Porvaznik will present a talk on Postgres fundamentals including shared buffers, memory usage, pages, and more. John is a long time PostgreSQL Engineer and DBA in the government space with focus on ETL / Data Ingestion, PostGIS and spatial data sets, query optimizations, Database Design // DDL, benchmarking and specifications, data health, and system healths and monitoring. This meetup will be hosted near the Snowflake office in Tysons (event space sponsored by Snowflake). We’ll have pizza and drinks for folks. 6:00 arrival and networking, 6:30 talk followed by discussion, 7:45 close. The event is at 1750 Tysons Boulevard, McClean, VA, 22102, in the 1750 Tysons Conference Center. This is Metro Accessible from the Silver Line to Tyson's Corner station. Parking at the mall next door is free or the event building has paid parking.

Have you been thinking about trying self-defense training, but do not want a loud, aggressive, or overly competitive environment? This free intro class is a simple way to get started. Maryland Systema offers practical self-defense training for adults in Rockville with a focus on movement, awareness, breathing, posture, and calm under pressure. This class is designed for beginners and first-timers who want real-world self-defense training in a welcoming setting. You do not need experience. You do not need to be in top shape. You do not need a martial arts background. You just need to show up ready to learn. This is not a sport-based class built around winning points, memorizing routines, or trying to look impressive. It is a more practical approach to adult self-defense training that helps you stay balanced, aware, and functional when things feel uncertain. If you have been searching for self-defense classes in Rockville, beginner self-defense near you, or practical self-defense training for adults, this class is a good place to start. **What you will work on** * Breathing and staying calm under pressure * Movement that improves balance and mobility * Awareness and posture * Simple partner drills * Practical self-defense training for beginners **Who this class is for** * Adults new to self-defense training * Beginners looking for a low-pressure class * People who want practical self-defense instead of sport martial arts * Adults in Takoma Park, Silver Spring, Rockville, and nearby areas looking for realistic self-defense classes **What to wear** Please wear comfortable workout clothes. No uniform is required. **Why start with this class** This free intro class gives you a chance to experience the training, meet the group, and see whether Maryland Systema is the right fit for you before joining regular weekly classes. **RSVP** Reserve your spot and come try a beginner-friendly self-defense class in Rockville.

**​​​​​​​​A free, public workshop—no technical background needed** ​​​​​​​​ In just the past 8 months, AI has advanced at a pace that stunned even leading experts. These systems aren’t science fiction anymore—they’re reshaping work, relationships, and even crime in real time. ​​​​​​​​This workshop explores where AI may be in the next 1–5 years and what that means for your daily life. Together, we’ll tackle urgent questions like: * ​​​​​​​​**Jobs**: Could AI lead to mass unemployment—or entirely new kinds of work? * ​​​​​​​​**Crime**: How might AI supercharge scams, hacking, and even physical crime? * ​​​​​​​​**Companions**: Will people form deep emotional bonds—or even romantic relationships—with AI assistants? * ​​​​​​​​**Society**: How do top researchers think these trends will shape our future? **​​​​​​​​What you’ll get:** * ​​​​​​​​A fast-paced, beginner-friendly overview of today’s most powerful AI systems * ​​​​​​​​Live demos that reveal both the breakthroughs and the risks * ​​​​​​​​An interactive forecasting exercise where you’ll test your own predictions about AI’s impact ​​​​​​​​Come ready to explore a future arriving faster than most people realize—one that could transform not just how we work, but how we trust, connect, and even love.

Please do not arrange to play earlier than the scheduled start time UNLESS you are able to stay till the end of the event, we do not want people leaving early and creating uneven numbers. Hello members, Tennis has become much more popular since the pandemic started and court space has been harder to come by. Following these simple rules will help everyone get the most out of MoCo Topspinners Meetup. • If you RSVP for an event, please attend that event or cancel at least two hours before the event starts. Members that no-show will receive one warning then will be benched (suspended) from events for two weeks. Three no-shows can result in a permanent ban. (No-shows create uneven numbers and prevent folks on the waitlist from playing. Please do your part to un-RSVP as soon as you know that you cannot attend an event.) • Members must have a way to communicate with organizers and hosts. This can be through the Meetup app messages or by providing other contact info. • Any member can ask a host or organizer to have their skill rated for event attendance purposes. You will not be allowed to participate in events higher than your NTRP rating. (We may try to limit numbers or have multiple events on a given day to accommodate players of different skill levels and also to help alleviate the court availability problem). • All members shall conduct good sportsmanship and be courteous to other members at all times. • Sexual harassment, racism, sexism or any kind of intolerance will not be tolerated and will result in the permanent ban from the group. • If member receives three warning infractions, the member will be suspended from the Meetup for a period of one month. If a member is suspended twice (six warnings), that member will be permanently banned and any membership dues will then be forfeited. • If you are scheduling to play with others outside of a MoCo Topspinners event, and you know that there is a MoCo Topspinners event scheduled for that day at that time, please try to use courts other than the courts where the event is scheduled, or move your time so that it does not conflict with the Topspinners event. For a list of complete rules and definitions you can see the MoCo Topspinners front page. If you have questions, don’t hesitate to contact us. We are hoping for a fun season but we may have to wait for courts and leave earlier than we are used to. Please be patient as we adjust to this new normal and try a few different things that will hopefully help the situation. Happy playing! If you would like to attend this event you must be a of minimum 3.0 level. USTA guidelines prior for signing up for the Meetup: https://assets.usta.com/assets/1/15/ExperiencedGuidelines_02142011_V2pdf.pdf • What to bring Tennis Balls, Racket, and Water.

Sign up to perform here: [Link for Performance Sign Ups](https://docs.google.com/forms/d/e/1FAIpQLSeZ9TNkUP7wsOuhd7AoNtYSaov47dpmQRhkKnlyMN4bHulu_g/viewform) Save the date for NetSAP Open Mic night at Solly's on Tuesday, April 28, 7-9pm! $5 donation recommended, unless you are performing - see the link for performance sign up! Get ready with your poetry, comedy, magic, and music! Can't wait to see all your talent!

It's Reboot Hour time — and this month we've got a little something extra up our sleeve. 🐾 Join the **eWaste Warriors** community for our monthly **Reboot Hour** at **Carpool in Arlington** — our favorite spot to unwind, connect, donate your unused electronics, and talk about what's next for electronics sustainability. This month's gathering has a bear theme — and let's just say there's a reason for that. We've been working on something quietly for a while now, and our Reboot Hour crew gets to be the first to hear about it. No big stage, no formal presentation — just good drinks, good people, and a sneak peek at what the eWaste Warriors have been building behind the scenes. 🐻 Come curious. Leave inspired. **What to expect:** 🍻 Drinks & great conversation at Carpool ♻️ eWaste device drop-off — bring old phones, tablets & laptops to donate 🐻 A little bear-themed fun — yes, there's a story there 👀 A sneak peek at something new — come find out what we've been up to 🌱 The eWaste Warriors community — DC's best crowd in sustainability Whether you're a longtime eWaste Warriors supporter, a sustainability enthusiast, or just someone who wants a great Monday night out in Arlington — this is your crowd. Dress is casual. Drinks are on you. The good vibes are on us. 🐾 📅 Tuesday, April 28, 2026 📍 Carpool, 4000 Campbell Ave, Arlington, VA 🎟️ Free — RSVP so we know you're coming *Bear with us. You won't regret it.* **Details:** Tuesday, April 28th 5:00 – 7:00 PM (drop in anytime) Carpool — 900 N Glebe Rd, Arlington, VA Right off the Ballston Metro **What to bring:** Just yourself. Old devices welcome but not required. A friend, or meet a new one! **What to expect:** Pool, pinball, shuffleboard, darts, drinks, zero pressure — and a baseball game at the end of the week.

We invite you to an in-person session in Seattle exploring the real impact of AI on knowledge-driven industries — from shifting economics and the disruption of traditional SaaS and consulting models to where organizations can still build lasting competitive advantage. As AI platforms like ChatGPT, Claude, and Gemini continue to redefine how work gets done, organizations face a critical question: how can they adapt, remain competitive, and create lasting value? We’ll discuss practical strategies for integrating AI while preserving human expertise, along with actionable approaches to upskilling teams for an AI-driven workplace. Drawing on real-world experience from training thousands of professionals and deploying AI solutions, this session will provide clear, applicable insights for today’s evolving landscape. Following a short presentation, the session will open into an interactive discussion where attendees can share perspectives and explore key questions around the evolving role of humans, organizational adaptation, and staying competitive in an AI-first world. **Who should attend:** • Executives and managers in SaaS, consulting, and knowledge-driven organizations • Professionals exploring AI upskilling and workforce transformation • Anyone interested in the future of AI and knowledge work 📍 **Location:** Data Science Dojo, 5010 148th Ave NE, Suite 200A, Redmond, WA, United States 🔗 **Google Maps:** [https://lnkd.in/d8WA-yNc](https://lnkd.in/d8WA-yNc) **💻 Online Access:** A livestream will be available for those unable to attend in person; however, the full interactive experience is reserved for in-person participants.

It is irresistible, to enjoy a GERMAN convo with drinks. ***GRAB A DRINK AND YOU ARE ALL SET TO FLEX YOUR LANGUAGE CAPACITY. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. HOW IT WORKS : We will try to assign tables for each represented languages and will direct attendees to their respective tables accordingly. Rules to abide : 1\. Event is 21\+ \(bring ID\)\. 2\. Be respectful to your counterparts and give them a chance to exchange with others as well\. 3\. We all are native speakers of one or two languages and be willing to help others and try to accommodate as much as possible\. 4\. If you don't speak the other person's required language\, LEAVE THEM ALONE\. 5\. Rude or aggressive members are removed from the group at an organizers discretion\. 6\. This is a face\-to\-face language exchange event\. DO NOT try to arrange an online meeting\, by using the comment box or direct message\. 7\. Most of our members complained about people writing in the comment box\. Since it sends notification to all attendees\. If you have any questions\, send a message to the organizers\. Don't write in the comment box\. 8\. We have ZERO TOLERANCE for solicitation\. We don't allow anyone to run their own agenda at the Event\. If you are interested to promote/sponsor/collaborate; contact us via \(info@merevents\.com\)\. 9\. When you get there\, we will greet you and take you to your respective group\. 10\. Don't be shy of your local languages\. We have diplomates assigned to different countries\, who would love to practice your languages\. 11\. Be patient for the first 30 minutes\, up until we form your respective language group\.
 12\. We will have a registration station and check you in\. 13\. This is mainly a social for Intermediate/Advanced/Native Speakers\. It is not as such to learn a language\. Beginners\, if you want to learn a language\, reach out to us \(info@merevents\.com\)\. We have a school and will arrange you a class\. ***AFTER THE EXCHANGE, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!***

DC Code and Coffee is an inclusive, informal co-working session. It's community-led and community-run by devs, for devs. People of all skill levels attend. Whether you’re dev-curious, aspiring, or a professional developer, we’d love to have you! Come chat or learn to code on a Sunday afternoon with coffee and cool-inclusive people. Bring your laptop! We typically meet every month on the weekend. **Join our online community!** For all things Tech in DC and to get latest updates and tech events from the DMV area, join the [DCTech Slack](https://dctech.chat/). All DC Code & Coffee announcements are in the #dccodecoffee channel **How it works** Near the beginning of the event, we do an introduction circle. You say your name, what you can help others with, and what you would like help with. You can also share job opportunities. After the introduction circle, everything is self-organized.

Enjoy a lively German convo! Hoffentlich werden wir euch dort sehen! ***GRAB A DRINK AND YOU ARE ALL SET TO FLEX YOUR LANGUAGE CAPACITY. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. HOW IT WORKS : We will try to assign tables for each represented languages and will direct attendees to their respective tables accordingly. Rules to abide : 1\. Event is 21\+ \(bring ID\)\. 2\. Be respectful to your counterparts and give them a chance to exchange with others as well\. 3\. We all are native speakers of one or two languages and be willing to help others and try to accommodate as much as possible\. 4\. If you don't speak the other person's required language\, LEAVE THEM ALONE\. 5\. Rude or aggressive members are removed from the group at an organizers discretion\. 6\. This is a face\-to\-face language exchange event\. DO NOT try to arrange an online meeting\, by using the comment box or direct message\. 7\. Most of our members complained about people writing in the comment box\. Since it sends notification to all attendees\. If you have any questions\, send a message to the organizers\. Don't write in the comment box\. 8\. We have ZERO TOLERANCE for solicitation\. We don't allow anyone to run their own agenda at the Event\. If you are interested to promote/sponsor/collaborate; contact us via \(info@merevents\.com\)\. 9\. When you get there\, we will greet you and take you to your respective group\. 10\. Don't be shy of your local languages\. We have diplomates assigned to different countries\, who would love to practice your languages\. 11\. Be patient for the first 30 minutes\, up until we form your respective language group\.
 12\. We will have a registration station and check you in\. 13\. This is mainly a social for Intermediate/Advanced/Native Speakers\. It is not as such to learn a language\. Beginners\, if you want to learn a language\, reach out to us \(info@merevents\.com\)\. We have a school and will arrange you a class\. ***AFTER THE EXCHANGE, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!***

Follow the 🎶 Forró DC is brung the fun of forro to everyone. Forró SC is opening the dance floor to all. Come out and join the free event to dance forro, explor Brazilian culture and meet the local forro fantics. There will be a basic forro lesson and plenty of time to dance.

Come join us for informal discussions about AI, and meet others who are passionate about the subject!

We're back! The Cover6 Community's in-person meetup returns for round two — and if you missed the first one, this is your shot. We're keeping it intimate this time — we've got space reserved right by the bar. Perfect size for real conversations. **What to expect:** * Pure open networking — no agenda, no presentations, no slides * Three hours to connect, catch up, and build real relationships * Genuine conversations with practitioners, newcomers, students, and professionals from across the industry * Good energy, familiar faces — and plenty of new ones * Drinks right there if you want one **Who should come:** Anyone in or entering the cybersecurity space in the DMV. It doesn't matter if you've been in the industry for 20 years or you're still studying for your first cert. You belong here. Bring a friend. Seriously — the more the merrier. Tag someone who needs to be in this room. 📍 AC Hotel by Marriott Arlington National Landing 1999 Richmond Highway, Arlington, VA 22202 *(Metro accessible — Blue/Yellow Line, Crystal City Station)* 📅 Friday, May 1, 2026 🕕 6:00 PM – 9:00 PM RSVP so we know how many people to expect. See you soon! — Tyrone & the Cover6 Community team

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

Couldn't make Knowledge? Or want to debrief with fellow attendees? Join us for a Knowledge '26 recap, insights sharing, a couple rounds of golf, and fun at Topgolf. As always, drinks and food will be provided. More details to come — mark your calendar, RSVP, and save your spot today!

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 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 speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

We're meeting at 5pm local to read from and discuss Normal People by Sally Rooney. Read what you can beforehand and bring your thoughts, favorite moments, and questions. New members are very welcome.

Join other experienced and aspiring agile coaches and professionals to: * develop and practice your coaching skills in a peer-to-peer environment * share current successes and challenges in your work environment and get support from each other * learn from each other, build better relationships and experiment with new ideas ***NOTE:*** Pre-registration is required for this event. **Please arrive 10 minutes early** to check in at the security desk.