Software Development

Welcome to our new home at the historic Tivoli Theater! Please check our details for access to the space on [our website](https://www.hacdc.org/visit/). Join the discord for questions / help getting in (use channel #let-me-in) [https://discord.gg/dNjuNhNmeT](https://discord.gg/dNjuNhNmeT)

Doubles Volleyball - Competitive BB-A level @Bluemont Park Let's get together to play some fun A level Doubles games at Bluemont. Format: Doubles COST: FREE Court Type: Outdoor grass Minimum Skill Requirements: BB-A level (click [here](https://docs.google.com/document/u/2/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) Attention: 1. This event is not always on a first come, first served basis. Those who can bring a net and ball, may get priority over others on the waitlist. 1. Since skill levels are self-reported, some attendees may not meet the expected level in reality, so we encourage you to choose a partner you can enjoy the game with, and since this is a competitive event, it is okay if you make a strong team and win all the games. 1. Since people arrive at different times, each group of 1. Players will set up and claim a net as they arrive, and may continue playing without rotating until all nets are set. ——— Smiley Social documents: [Group Rules](https://docs.google.com/document/u/2/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg/mobilebasic) [Liability Waiver](https://docs.google.com/document/u/2/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco/mobilebasic) [Volleyball Levels](https://docs.google.com/document/u/2/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic)

Volunteer with us refurbishing donated bicycles to help us get them back out in the community! This event is open to both new and existing volunteers. No mechanical experience is necessary. Note: The warehouse location is in the alley behind 1502 Mt Vernon Ave. Enter through the gray door next to a roll-down garage door. If you drive to the location, be sure to park in the street, not in the alleys or parking lots surrounding the warehouse. And wear clothes you don't mind getting dirty with bicycle grease! Please be aware that volunteers under 18 need a parent or guardian to accompany them to their first volunteer experience and sign a liability waiver, while volunteers under 16 need a parent or guardian to accompany them at all times while volunteering with Vélocity.

RSVP on luma! https://luma.com/dc2-xbhs The workshop got rescheduled so we're doing a happy hour instead! \-\-\-\- * ​**Date and Time**: Monday June 15th, 2026, 5:00 – 6:30 p.m. * ​**Location**: El Rey, 4201 Wilson Blvd, Arlington, VA 22203 \-\-\-\- Data Visualization DC is a part of Data Community DC, Inc, a 501c3 nonprofit dedicated to advancing data practitioners in the national capital area. Location El Rey 4201 Wilson Blvd Suite 150-160, Arlington, VA 22230, USA

Meet in front of Copper Canyon by the benches.
We'll do anywhere from 3-5 laps. It's .75 miles around and we usually do 3/4 laps. For safety reasons, we’re going to keep the group to two small groups of eight members each. Sometimes it get crowded there so we don’t want to have any mishaps. 
Afterwards, if we like the group will decide where to grab a bite to eat at one of the local restaurants at the RIO. If you happen to be late, walk, counterclockwise around the lake and you should see us walking

If you’ve already learned the basics of volleyball and want to keep improving your skills while having fun, this event is for you! **Skill Level:** Advanced Beginner (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details). **Reminders** 1. Attendance: We’ve noticed that the waitlist is growing, so please make sure your name is on the Going list if you plan to play. Our number of nets is limited so this helps avoid too many rotations. If your name is on the list but you don’t show up, it will count as an absence according to Smiley Social rules. Please update your RSVP at least 12 hours in advance if your plans change. 2. Waitlist: The waitlist is not first come first serve. We prioritize regular attendees, and will fill empty spots with new faces closer to the event date. 3. Injuries: Play safely and be mindful of others on the court. Respect positions and avoid risky moves that could lead to injury. If you’re not sure the ball is yours, call it before going for it to avoid collisions. 4. Game Rules: Let’s follow the basic volleyball rules, especially the three-touch rule so we can play properly and improve as a team! **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

Let your creativity loose on the dance floor! Learn all the latest dances suitable for beginners and seasoned line dancers. Enjoy this great way to exercise, socialize, and energize yourself. Level: All. Ages 13 & up. Register [here](https://mdpgparksweb.myvscloud.com/webtrac/web/search.html?Action=Start&SubAction=&_csrf_token=jj6G6I6V136R2B2C3F46404T5G545C5L015H415D5W6Z5J586S5W0C5V4E736I1V5U4N4N6H6N5H4I5S530Y5T4T6E6V080E4J6G5S096I5R505M1J6J4R5L640I726D6J&age=0.25&age=0.5&age=0.75&age=1&age=2&age=3&age=4&age=5&age=6&age=7&age=8&age=9&age=10&age=11&age=12&age=13&age=14&age=15&age=16&age=17&age=Adult&age=Senior&primarycode=17681-479A&keyword=&keywordoption=Match+One&showwithavailable=No&spotsavailable=&beginyear=&instructor=&dayoption=All&display=Detail&module=AR&multiselectlist_value=&arwebsearch_buttonsearch=yes) (summer registration opens 5/13 for residents & 5/20 for non-residents). Activity Code: 17681-479A Classes may be canceled due to inclement weather or wet grounds. Call 301-927-0822 for weather-related cancellations. For fastest response to any questions, or for more information, please contact Health and Wellness directly via email wellness@pgparks.com

NOTE: This working session is at West End Neighbourhood Library not MLK. It is near the Foggy Bottom Metro Station. A game development **Working Session** involves 3 key parts: 1. Tell people what you're going to do 2. Actually do stuff 3. Show people what you did **What to bring**: Laptop, Charger, maybe a power strip if you have one handy, any other game development tools you need. Try to download any software you need before the working session. There is Wifi at this location, but it may be slow if you have to download any large files.

Want to mess with some electronics? Or perhaps contribute to HacDC's main group project? HacDC's latest event brings hardware projects to the community. We will focus primarily on the main project (Space Blimp!) but please feel free to bring some of your own projects to show off and work on!

meet at Tysons Corner Mall Upper Level Food Court

Title: What Is Progress? Knowledge Aggregation, Living Textbooks, and the Automation of Scientific Discovery Date: June 20 2026 Noon - 14:00 EDT Summary: Our collective knowledge infrastructure — the textbooks, professional training resources, and literature syntheses that define what professionals across disciplines believe to be true — is quietly accruing a structural liability. Compounded confirmation bias, stacked citation-by-citation into the foundations of formal knowledge, means that breakthroughs can take decades to reach the classrooms, clinical workflows, and decision-making frameworks where they matter most. Meanwhile, the deepest friction is rarely acknowledged: before any field can build meaningful consensus on "why" or "how" a phenomenon occurs, it must first establish honest, consolidated agreement on "what" has actually been observed. That prior step is routinely skipped, assumed, or fragmented across siloed literatures that never cross-pollinate. This talk introduces a framework called "Knowledge Aggregation" — with two distinct but complementary ambitions. The first is descriptive transparency: algorithmically mapping what has been said, measured, and documented across a problem space, without imposing causal interpretation or narrative. The second traces the boundary between empirical observation and explanatory claim, building systems that can separate the "what" from the "why/how" — because consensus on mechanism cannot be meaningfully constructed until consensus on phenomenon is first established. Both ambitions are now within reach. By composing tools already at our disposal — large language models, classical NLP pipelines, public data repositories, and engineering-grade automation frameworks — it becomes possible to model knowledge itself, rather than merely imitate individual experts. One concrete expression of this is automating the writing of living textbooks: compressing the lag from bleeding-edge discovery, through replicated evidence, all the way to professional training resources. But the deeper aspiration reaches further — toward automating the discovery of scientific insights that have never previously been conceived, by systematically surfacing hypothesis combinations that no single siloed researcher would have had the cross-disciplinary vantage point to even ask. Drawing on ongoing systems biology and computational research — with ME/CFS research demoed as a use case for what siloed, fragmented knowledge infrastructure costs in practice — this talk maps the conceptual architecture, the real-world friction, and the data science toolkit for building it. Speaker: As a systems biologist at heart, Sam specializes his biomedical research on interactions and connections in biology - rather than just one domain of expertise. He wears many hats and collects skill sets across disciplines, with degree studies and industry experience acquired across Chemical Engineering (BSc), Bioinformatics (MSc), Systems and Synthetic Biology (M2), Biomedical Sciences (MSc), and beyond. Even more important to him than niches or fields of work, comes down to the synergistic approaches that allow us to move beyond reductionism. The notion that a question can only allow for one answer, is inherently reductionist. By resisting many norms in science and engineering which can get overly reductive, his current role as Principal Investigator of Research for DMV Petri Dish (501(c)(3) non-profit local to the DMV region) embraces computational frameworks that aide scale-up and automation - not only around the processes which already exist with established workflows, but also taking a keen interest in attempting and accomplishing ambitions which have never been perceived to be possible previously. Sam carries a passion for the synergy of computational biology - fused with wet lab validation. This way, one can build a beautiful knowledge base in the theoretical sense, and then test to see if said computational prediction might actually be able to stand in the real world with wet lab validation. Translational modeling starts to become possible once biological experiment design can be iteratively looped alongside computational model design, optimization, and analysis - empowering the design of a better wet lab experiment, followed by a better computational model, back and forth until science is done!

**Make sure to RSVP** **[here](https://developer.microsoft.com/en-us/reactor/events/27321/)** **at the Microsoft Reactor site** https://developer.microsoft.com/en-us/reactor/events/27321/ We're excited to announce the **Microsoft Build 2026 Local Host Conference** happening in **Reston, VA,** on **Friday, June 19, 2026**, from **09.00 AM to 4 PM EDT**! This **free conference** will take place at the **Microsoft offices** at **11955 Freedom Dr, Reston, VA 20190, on the second floor in the rooms MPR RESTON-11955/2.2D, MPR RESTON-11955/2.2E, and MPR RESTON-11955/2.2C.** **Agenda:** * 09:00 AM - 09:30 AM: Registration and Breakfast * 09:30 AM - 10:00 AM: Build 2026 Keynotes Highlights * 10:00 AM - 10:50 AM: **Session:** Build context-aware agents at scale with Microsoft IQ * 11:00 AM - 11:50 AM: **Panel:** Ask Us Anything about AI (with focus on skilling and finding jobs) * 12:00 PM - 01:00 PM: Lunch * 01:00 PM - 2.30 PM: **Hands-On Lab:** From zero to deployed on Azure with AI agents * 2:45 PM - 4:00 PM: **Hands-on Lab:** Observe, optimize, and protect your hosted agents in Microsoft Foundry The venue is **Metro accessible via the Silver Line**, and there’s plenty of **paid parking available** in the Reston Town Center garages. We'll have **breakfast, lunch, and snacks** for all attendees! Make sure to **RSVP** — you’ll receive your **event badge at check-in**, and you’ll need it to attend. This in-person event is built for developers and cloud engineers who want to design, build, and deploy real-world AI solutions on Azure. Expect a hands-on, implementation-focused experience using Microsoft Foundry and GitHub Copilot with live demos, guided labs, and practical developer workflows. **What to expect:** * Key takeaways and announcements from Microsoft Build 2026 * Deep dive into Azure AI and Generative AI use cases * Live demos with Microsoft Foundry and GitHub Copilot * Hands-on labs to build and test AI-powered features end-to-end * Best practices for building AI-powered applications * Networking with the local AI developer community Whether you're shipping your first AI feature or scaling production systems, this event is designed to give you actionable insights to accelerate your AI journey with Microsoft.

Join us on zoom call zoom from your phone free at 1929 436 2866; meeting id is 896 0197-4108 that's all, see you today 3rd Sunday at 12:45pm 2-15-26 ask for Howard!

NOVA Code and Coffee is an inclusive, informal, co-working session. People of all skill levels are invited. The concept is simple, bring a laptop and ideas, we'll provide the coffee and donuts! Here's how it works: 1. At 10:15 everyone introduces themselves and briefly describes what brought them to Code & Coffee today (project, homework, networking, etc) 2. For the rest of the day, folks work in the communal space on their projects providing one another help and conversation as needed. Oh and they usually drink coffee and tea too! That's it! Hope to see you there! **Location** Our hosts are the Fairfax City Economic Development Building: [10300 Eaton Pl, Fairfax, VA 22030](https://www.bing.com/ck/a?!&&p=d7298231ca2df594df822003f9a93517c788fceefe1fcbb79c8976696e341bc6JmltdHM9MTc1MzIyODgwMA&ptn=3&ver=2&hsh=4&fclid=180d0745-3b7f-69a1-23a2-11433a7868e5&u=a1L21hcHM_Jm1lcGk9MTA5fn5Ub3BPZlBhZ2V-QWRkcmVzc19MaW5rJnR5PTE4JnE9RmFpcmZheCUyMENpdHklMjBFY29ub21pYyUyMERldmVsb3BtZW50JnNzPXlwaWQuWU44NzN4ODI4MTk2Mjg0NTk5MDM4MTU0MiZwcG9pcz0zOC44NjE0NDYzODA2MTUyMzRfLTc3LjMwMjE3NzQyOTE5OTIyX0ZhaXJmYXglMjBDaXR5JTIwRWNvbm9taWMlMjBEZXZlbG9wbWVudF9ZTjg3M3g4MjgxOTYyODQ1OTkwMzgxNTQyfiZjcD0zOC44NjE0NDZ-LTc3LjMwMjE3NyZ2PTImc1Y9MSZGT1JNPU1QU1JQTA&ntb=1) Conference Room A- Large, Floor 1 This is a new venue for us, so give us some time to get more details about it. Driving is the best option. There is plenty of free on-site parking. Otherwise, we are a 22 minute bus from the Vienna Metro Station. Bicycling from Vienna is possible but difficult, though once you are here, there's a bike rack in the garage behind the building, and there's also a Capital Bikeshare dock 15 min walk away. **Sponsored by:** Thank you [Fairfax City Economic Development](https://gofairfaxcity.com/) and [Mason Enterprise Center](https://enterprise.gmu.edu/) for making this event possible! **Thank you so much to our wonderful sponsors!** Organized by [DMV Petri Dish](https://www.dmvpetridish.com/) **[Code of Conduct](https://github.com/NoVACodeCoffee/admin/blob/master/code-of-conduct.md):** We value the participation of each member of the community and want all attendees to have an enjoyable and fulfilling experience. To make clear what is expected, all delegates/attendees, organizers, and volunteers at any Nova Code & Coffee events are required to conform to our [Code of Conduct](https://github.com/NoVACodeCoffee/admin/blob/master/code-of-conduct.md).

Join our new group’s fourth meeting. Meet fellow tech enthusiasts west of the beltway. ​Our meetings are a great place to work on and show off what you do. We are always welcoming. ​Our format is great for people who have started on but not finished one or several side projects. ​We will start off with basic introductions and what we are working on, along with what our goals are for the session. We’ll break the rest of the meeting into two working sessions. In between, we’ll do a quick check-in to see how folks are going. We also have some polls available which we use to shape our events: ​[https://submatrix.net/article/Meetups/e9ym4fr8Ca](https://submatrix.net/article/Meetups/e9ym4fr8Ca) If the meetup is full, we encourage you to come anyway.

**Register Here:** https://reg.experiences.redhat.com/flow/redhat/4102500/rhexpressregistrationapp/page/expressregistration?sc_cid=RHCTN1260000485001 **Automate at the speed of mission** Today’s landscape demands a shift in strategy. One where automation isn’t just a tool, but the engine driving modernization for your organization or agency. Join Red Hat experts and your peers at **[Ansible Automates in Washington, DC](https://reg.experiences.redhat.com/flow/redhat/4102500/rhexpressregistrationapp/page/expressregistration?sc_cid=RHCTN1260000485001)** for a full day of conversation on building an automation strategy that scales. We’re moving beyond isolated tasks to focus on the topics that define modern IT: * **Operational velocity and scale:** Deploy faster and eliminate manual bottlenecks by standardizing on Red Hat® Ansible® Automation Platform as the backbone of your IT estate. * **Continuous compliance and resilience:** Trade audit anxiety for automated governance, stay ahead of configuration drift, and minimize human error to ensure mission continuity. * **AI-driven operations:** Put data and intelligence into automated action with the latest advancements in Ansible Lightspeed and gen AI. **What you'll walk away with** You'll leave with real, applicable insight from technical experts, peer practitioners, and Red Hat product leadership, including a 1st-look at what's new in AAP 2.7. **Who should attend?** **#AnsibleAutomates2026** is for IT business leaders and their teams: * CIOs, CTOs, and IT Directors * Enterprise and Network Architects * IT Operations and DevOps Leads * Security and Compliance Professionals * Automation Architects shaping AI and modernization strategy * Anyone interested in Automation - no matter where you are in your journey **[Event Details](https://reg.experiences.redhat.com/flow/redhat/4102500/rhexpressregistrationapp/page/expressregistration?sc_cid=RHCTN1260000485001)** * **Location:** Marriott Marquis\, DC \| 901 Massachusetts Ave NW\, Washington\, DC 20001 * **Date:** Wednesday, June 24, 2026 * **Time:** 8:15 AM - 4:30 PM ET **Note:** Please register using your business email address. Questions? Contact us at infrastructure@redhat.com

Important: Register on [AICamp website](https://www.aicamp.ai/event/eventdetails/W2026061814) is required for admission. **Description:** Welcome to the AI meetup in Washington DC. Join us for deep dive tech talks on AI, GenAI, LLMs and Agents, hands-on experiences on code labs, workshops, and networking with speakers and fellow developers. **Agenda:** \* 5:30pm\~6:00pm: Checkin, Food/drink and networking \* 6:00pm\~8:00pm: Tech talks and Q&A \* 8:00pm: Happy Hour at Courthouse Social (cross the street) **Tech Talk: Secure Developer Environments in the Age of AI Agents** **Speaker:** Patrick Brown (Coder) **Abstract:** Federal engineering teams are under pressure to ship faster while meeting some of the most demanding security and compliance requirements in the world. In this talk, Patrick Brown of Coder explores how cloud development environments (CDEs) give agencies a foundation to accelerate software delivery without sacrificing control — and why that foundation matters even more as AI-powered coding agents enter the workflow. He'll cover how CDEs keep source code off endpoints, enforce zero-trust access patterns, and provide the consistent, ephemeral infrastructure that both human developers and AI agents need to operate safely at scale. **Speakers:** Stay tuned as we are updating speakers and schedules. If you have a keen interest in speaking to our community, we invite you to submit topics for consideration: [Submit Topics](https://forms.gle/JkMt91CZRtoJBSFUA) **Sponsors:** We are actively seeking sponsors to support AI developers community. Whether it is by offering venue spaces, providing food, or cash sponsorship. Sponsors will not only speak at the meetups, receive prominent recognition, but also gain exposure to our extensive membership base of 5,000+ AI developers in D.C and 500K+ worldwide.

Please RSVP on luma: [http://luma.com/dc2-nwz3](http://luma.com/dc2-nwz3) A meetup for software engineers and IT professionals who use AI tools in their craft. ​**agentic engineering** describes the practice of developing software with the assistance of coding agents. What are **coding agents**? They're agents that can write and execute code. Popular examples include [Claude Code](https://code.claude.com/?utm_source=luma), [OpenAI Codex](https://openai.com/codex/?utm_source=luma), [Gemini CLI](https://geminicli.com/?utm_source=luma), and [https://kilo.ai/](https://kilo.ai/?utm_source=luma) If you build software and want to learn and share effective practices for using agents to build real software, this is the meetup for you. Agenda: 6-6:30pm: Food and networking 6:30pm - Introductions 6:45pm - Agentic Engineering Demo /Tips 7:00pm - Agentic Software Engineering Failures 7:15pm - Presentation and interactive survey on Agentic Engineering 8:00pm - end

Most AI meetups end up as just networking. **We’re different.** At **AI Tool Explorers Night \| Connect & Make New Friends**, you’ll: ✨ Walk away with a *real learning nugget* (a tool, workflow, or strategy you can use immediately) ✨ Connect with people who share your curiosity for AI, productivity, and automation ✨ Enjoy a fun, casual setting where new ideas and friendships spark naturally 👉 **Our promise:** every session delivers structure, substance, and takeaways you can use when you get home. ### 📅 Event Flow * **6:00–6:15 PM** → Arrivals & intros * **6:15–6:45 PM** → AI demo / learning nugget * **6:45–7:00 PM** → Q&A and group discussion * **7:00–8:00 PM** → Networking & contact sharing ⚡ Please hold networking until after the presentation so we can all learn together. Plenty of time at the end to connect and exchange cards! **Let's explore AI Tools that actually *work* in our day-to-day life!** *** #ChatGPT #Claude #Grok #Gemini #Perplexity #DeepSeek #NotebookLM #Cursor #GitHubCopilot #Replit #Windsurf #v0dev #Lovable #Zapier #Makecom #n8n #Descript #OpusClip #Synthesia #Runway #Sora #Kling #Veo #PikaLabs #LTXStudio #AdobeFirefly #Vidu #Hailuo #LumaDreamMachine #Wisecut #Elaiio #Capsule #Filmora #Gling #Magisto #AdobePremierePro #ElevenLabs #Suno #Udio #Soundraw #Riffusion #Mubert #BeatovenAI #AIVA #Loudly #SplashPro #Soundful #MagentaStudio #WavTool #MakeBestMusic #BandLabSongStarter #TadAI #EcrettMusic #Midjourney #DALLE3 #CanvaMagicStudio #NotionAI #Gamma #Fathom #FirefliesAI #MLX

**Location:** Strategy HQ 1850 Towers Crescent Plaza Tysons Corner, VA 22182 [https://maps.app.goo.gl/GWnJA7iWFNLinSjw6](https://maps.app.goo.gl/GWnJA7iWFNLinSjw6) Join us for BitDevs DC #20, our local Socratic Seminar covering Bitcoin protocol development, security, and governance. This month we'll be discussing Bitcoin bugs, cluster mempool in Core 31.0, Silent Payments adoption, the recent maintainer shakeup, and more. Pizza provided by Strategy. **Timeline:** 5:30pm - 6:00pm : Doors open and social half hour 6:00pm - 8:30pm : BitDevs Socratic Seminar **Parking/Transport:** * 🚆 Silver Line Metro — Tysons Corner Station + walk through Tysons Corner Center mall and over the bridge to the building * 🚗 Parking available in the Tysons Corner Center mall lots adjacent to the building or in front of the building Thank you to **Strategy** for hosting!