Software Engineering

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)

What3words: https://w3w.co/stick.juices.rings [https://what3words.com/stick.juices.rings](https://what3words.com/stick.juices.rings) Share only your very best, most interesting shots after the field trip, and keep it down to between 5 and 10 photos. [http://www.fairfaxcounty.gov/parks/huntley-meadows-park/](http://www.fairfaxcounty.gov/parks/huntley-meadows-park/) From the parking lot near the visitor center off Lockheed Blvd, there is Cedar Trail which is about a 15-minute hike to the Heron Trail boardwalk. The Cedar Trail goes through a great forest that has some wildlife like deer and many birds, The Boardwalk is where the majority of the wildlife is located. The Group has seen deer, foxes, beaver, snakes, frogs, green tree frogs, huge snapping turtles, and many types of birds including Bald Eagles, Osprey, Marlins, Great Blue Herons, Great Egrets, King Fishers in the marshy wetlands. The boardwalk can become crowded before sunrise. The crowd, notwithstanding, the early arrivals have been rewarded with sightings of foxes and Bald Eagles. There is a point on the boardwalk that splits. The left side features sightings of shorebirds snapping turtles and beavers. The right side leads to one of the smaller overlooks and has several benches along the way. In the wintertime, the Group gets to photograph many migrating ducks, such as Green-winged teals, Northern Shovelers, and Northern Pintails! In the springtime, the park provides bird boxes for the Wood Ducks and Mergansers to lay and protect their eggs until their offspring fledge and leave the nest. The Group then continues around the boardwalk to the right towards the forest where Great Blue Herons and Red-winged Blackbirds are photographed. Next, the Group approaches a two-story overlook complete with benches for the Group to rest and survey the park. Following a brief respite, the Group continues to Marker 8, the end of the boardwalk. At this point, the forest reappears. And on that edge of the wetlands, there are Red-Headed Woodpeckers. This is one of the few places in the Washington, DC area where they live. After a couple of hours on the wetlands, the Group retraces the route by continuing on the boardwalk to the right towards Cedar Trail, past the visitor center onto the parking lot. There is a small pond behind and to the south of the visitors center that frequently has small frogs. While they are a true find to photograph, mosquitoes have been known to swarm at the pond! The north side of the visitor center features bird feeders that attract hummingbirds and other small birds. At the end of this field trip, the Group typically has breakfast at IHOP, 7694 Richmond Highway, Alexandria, VA. 22306. By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

7:45 PM – Beginner Bachata 8:30 PM – Beginner Salsa This Class is for absolute beginner and up. [Book Your Class Here. ](https://crowndancestudio.com/group-classes/) Choose the date. then Click "book now." $18 Per Person for 1 Class $25 Per Person for 2 Classes Do I need Partner? NO Is it a Series? No. But we review similar materials on the consistent basic. Can I drop-in? Yes. Membership & Class pass available for your better growth and progress. [www.crowndancestudio.com](https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.crowndancestudio.com%2F%3Ffbclid%3DIwAR2zhtlRxGhExkt_lh7UddK-BeWO8Qs1-EOyoeOGv-J3T0iFQh1Mcj2yiCA_aem_AcwNtPvUfkDahcWu-o_1owBvR7kH5cPtGKRaZN0cwvsy7zAKFAW0zv11GyJZeHFK3sXTqcwkHzYjvnhIdj_bZzn9&h=AT03tOQ7TaMbm8BWrbY5GVWwm5AUCbspa2tH6WSZj2P19MdXsK-Ih8hbVRlM9y0i0DuAMcN1QoF5tRzsQ-8aq-F0hneUu0Qayohk--xGdi4ODLmv7dW1y3B0veXR6xDUMxTNH1ui5a1qQMb1Cw&__tn__=q&c[0]=AT23QwS2XzF8mb_UChFebvxb_ZwrfUwkBaJHK5_0MHCyY9o9eHFqWNQPS2IJpCgWWS7KJfldFCk2N1JPAXQQGplryaicqsu-5Hpj0tsphsZ3balIXhHgvlOSxKBXhiUaH8GLAXguklvbM9QOeUG2qAJKdQJ6) Address: 2820 Dorr Avenue Fairfax, VA 22031 See less

Do you find yourself showing up in meditation sessions wondering why your mind won’t settle down?Are you trying to figure out why your body seems to become so uncomfortable in meditation sessions? Join Marsha, non-conventional meditator, certified yoga therapist, trauma sensitive yoga facilitator, and energy and sound healing facilitator, as we show up and unpack ways of meditating that uniquely resonate with you. Whether you find comfort in standing, sitting in a chair or on a yoga mat, or lying on the floor, eyes open or closed, you are welcome to show up just as you are, as we seek peace through movement and compassionate sharing experiences, while embodying the physical, intellectual, emotional, and spiritual benefits of meditation, energy + sound healing, and yoga therapy. **Please reserve your spot at www.piesfitnessyoga.com**. The session is offered both InStudio and OnLine. The Zoom link for the OnLine session will be emailed 15 minutes before class starts to those who are registered at www.piesfitnessyoga.com. **Sign up for sessions must be made at least 2 hours prior to class.** The address is 1322 Prince St Alexandria, VA 22314 Our entrance is located on the side of the building, parallel to West St. **Street parking is available and additional parking is located at Shiloh Baptist church, spaces 36,37,38,39.** The church is located across the street from the studio, on the corner of Duke St. and West St. Discount is available to seniors, teachers, students, emergency responders, and military. All can save by purchasing class packs.

**West Coast Swing with Lara Deni** **Where:** Deni Danzco Studio - 3408 Annandale Rd, Falls Church, VA ​ \*Max 16 people per class **Monday** 7:00pm - Level 2 (Novice) 7:45pm- Drills/Musicality/Technique - Levels 2-4 8:30pm - Level 3 /4 (Intermediate/Advanced) ​ **Thursday** 7:00pm - Level 1 (no experience/beginner) **Cost: *$74/month*** \- Three classes per month in any one level ***$199/monthly subscription*** \- Unlimited Class Monthly Membership of any level \- cancel anytime **Explanation of Levels** * Level 1 (No Experience/Beginner) - 6 count Rhythm, Left and Right Side passes ), Starter Step, Connection, and a few other basics * Level 2 (Novice -Beyond Basics) - See 6 month Syllabus on the website * Level 3 /4 (Intermediate/Advanced) - Turn techniques, Leaders Turns, Hammerlocks, Re-directs, Sling Shots, Whip Variations, and so much more. The moves and information learned in this class is endless. You will not be bored! :o) * Drills/Technique/ Musicality (Levels 2-4) ​- Each month will be concentrating on one of the three mentioned. We will dive deep into that area of dance, so you walk away with a better understanding, more knowledge, and musicality to enhance and make your dance more fun! Definitely a class not to miss! ###### Q&A * Classes are 45min * Refunds offered only 48 hours before class/class series starts * You can make-up a class with a class that is of a lower level and running during your current series class time period ​

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!

**REGISTER AT THE LUMA EVENT PAGE!!!** https://luma.com/27ja5gwl Join us for an exciting talk by Mary Gibbs, Senior Applied Scientist at Relativity. ​ ​**​Agenda:** ​​6:00 - 6:30 PM - Welcome and mingle 6:30- 6:45 PM - Introductions 6:45 - 7:30 PM - Talk 7:30 - 8:00 PM - Wrap up **​​Description:** ​If you have ever shipped a model, watched your metrics improve, and later learned from your users that something was wrong, the metrics were always wrong. You just didn’t know it yet. An evaluation consists of three components, a benchmark, a scorer, and a claim about what a score represents. Each component has its own weaknesses. Benchmarks can suffer from narrow coverage, contamination, or saturation. Scorers are often chosen for ease of automation or computation rather than for their alignment with user outcomes. And the claim connecting a score to reality is rarely made explicit. These gaps compound across the model development lifecycle. When metrics improve, teams treat that as a signal and optimize directly against it, which is how a measurement problem becomes a model problem. This talk maps where evaluations can go wrong, considers counterarguments, and ends with practical advice for building better ones. **​Speaker Bio:** ​Mary is a Senior Applied Scientist at Relativity, tackling data science challenges in the e-discovery and legal tech space. She is also an organizer for Women and Gender eXpansive Coders DC (formerly Women Who Code DC), fostering a community dedicated to empowering women and nonbinary individuals to excel in their careers. Mary's experience spans various domains. She has developed data science solutions related to job search and career progression at Teal, cybersecurity challenges at LiveAction Software, and commercial and government consulting at Mosaic Data Science. Before venturing into the field of data science, Mary conducted and published research pertaining to the cellular and molecular mechanisms underlying neurodevelopment at the National Institutes of Health. In other words, she has dissected and imaged a lot of fruit fly brains. She holds a M.S. in Data Science from The George Washington University and a B.A. in Biological Sciences from Cornell University

Join PSW Science® on May 29 at 8 PM as we welcome Michael Garrett (U. of Manchester) & Adam Thompson (NVIDIA). During the question and answer period, in-person attendees and live stream viewers may ask the speaker questions, and in-person attendees may also engage with the speaker during the post-lecture reception. Refreshments are served. For more information on this meeting, please visit: https://pswscience.org/meeting/2536 The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available. PSW Science, founded in 1871, is one of the oldest scientific societies in Washington D.C. Now, over 150 years later, we celebrate the Society's rich history and contributions to scientific discovery and cross-disciplinary collaboration. For information on how to become a member of PSW Science and membership benefits, please visit https://pswscience.org/join/

**NOTICE: The park is open until 8:45 PM for Sunset Closing** [https://www.novaparks.com/parks/meadowlark-botanical-gardens/events/sunset-in-the-gardens-845pm-closing](https://www.novaparks.com/parks/meadowlark-botanical-gardens/events/sunset-in-the-gardens-845pm-closing) **Sunset is 8:25 PM** Fees: $5 for ages 6-17 & ages 55+, $9 for ages 18-54, and free for ages 5 & under We will meet at the visitor center. Bring Water, Tripod, comfortable shoes, fully charged batteries, and empty cards There is no specific route in this park. Folks are free to wander around the trails in the park at their own pace. Check out Rob Trek's video from May 16, 2021: https://youtu.be/QwNR_TuxM4Y For dinner, after the field trip around 8:30 PM, we will head to Anita's New Mexico Style Restaurant, 521 Maple Ave E, Vienna, VA 22180 https://maps.app.goo.gl/3T7gw87tjvVuwDT96 Share only your very best, most interesting shots after the field trip, and keep it down to between 5 and 10 photos. Beauty, conservation, education, and discovery flourish throughout the year at this 95-acre complex of large ornamental display gardens and unique native plant collections. Walking trails, lakes, more than twenty varieties of cherry trees, irises, peonies, an extensive shade garden, native wildflowers, gazebos, birds, butterflies, seasonal blooms, and foliage create a sanctuary of beauty and nature. [https://www.nvrpa.org/park/meadowlark_botanical_gardens/](https://www.nvrpa.org/park/meadowlark_botanical_gardens/) By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

NOTE: This working session is at Lamond-Riggs Library not MLK. It is near the Fort Totten 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.

DeafPlusAdvocate is hosting our monthly ASL Social event in the DMV. Join us for a late spring ASL Social at Garden Social. Also, enjoy Hawaiian cuisine and great outdoor and indoor space. .If you are Deaf/hearing, interested in socializing, or looking for practice with American Sign Language (ASL), join us! All ASL levels are welcome! This is the perfect place for you! We will host ASL Social on Saturday, May 30th, at the L&L Hawaiian Barbecue from 5:00 PM - 8:00 PM. The address is: 4363 John Marr Dr, Annandale, VA 22003. If you have any questions, please don't hesitate to contact the DeafPlusAdvocate team.

**RSVP DOES NOT GUARANTEE YOUR SPOT. You must register via our website:** [https://www.katiereifertvbcamps.com/krvc-adult-volleyball-camps.cfm](https://www.katiereifertvbcamps.com/krvc-adult-volleyball-camps.cfm) **Defensive Skills & Setting Camp** This camp is designed for **adult volleyball players (ages 20 & above)** looking to improve their defensive & setting skills. Ideal for **all skill levels**, this camp offers an opportunity to receive skill instruction from George Washington's coaching staff. Defense & Setting Skills Camp is designed to develop well-rounded back-row defenders and setters by blending high-level defensive training with position-specific setting work. This session allows defenders to sharpen their floor skills while providing setters with focused, individualized technical training. **What to Expect:** Players will work on defensive techniques including platform control, reading hitters, movement patterns, & ball tracking in fast-paced, game-like drills. Back-row defenders will also learn how to set out-of-system to expand their skill set & decision-making. Setters will receive high-level 1v1 technical training while also spending time working on their own defense & blocking, helping them become more complete, well-rounded players on the court. We will spend the first hour & a half on skill instruction & the last 30 minutes playing competitive 6v6. 6v6 play will be recorded & distributed to participants so you can track your progress! **Camp Schedule:** 🗓️ *Tuesday, May 26th* * 6:45 PM – Doors Open, Check-in begins at the Charles E. Smith Center * 7:00 PM – Camp Begins * 9:00 PM – Camp Ends **Important Info:** * **You must register via our website:** [https://www.katiereifertvbcamps.com/krvc-adult-volleyball-camps.cfm](https://www.katiereifertvbcamps.com/krvc-adult-volleyball-camps.cfm) * This camp is for **adults only** – you must be **above the age of 20 or have exhausted your NCAA eligibility.** * You will enter the Charles E. Smith Center at the **Ticket Office Entrance**, located on 22nd St. * **Please do not arrive early; basketball will be finishing up their practice at this time & we cannot accommodate your arrival earlier.** * Payment is due at the time of signup. * If you have questions, please contact us at katiereifertvolleyballcamps@gmail.com * *By registering, you agree that we may use your photo for marketing.* We can’t wait to see you there!

**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** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

Topic to be announced. **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

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)

Join us for **[Nathan Leiberman](https://www.linkedin.com/in/nathan-richard-lieberman/)**'s talk ... Had enough of writing the same flex classes for the hundredth time? Tired of diving into your coworker’s cobbled container class? Tailwind CSS is here to save your sanity. Tailwind gives you a well-organized, utility-first approach to styling. This CSS framework eliminates naming debates, halts stylesheet scavenger hunts, and satisfies your marketing team’s whims with clear, composable class names and a powerful configuration system. You’ll spend less time fighting CSS and more time building beautiful interfaces. In this talk, I’ll walk through an interactive demo of Tailwind CSS and cover the following topics: * Set up Tailwind CSS in your project * Understand Tailwind’s utility classes and how they work * Integrate breakpoints and dark mode like a pro * Customizing Tailwind to fit your style Ditch your spaghetti stylesheets and come see how Tailwind CSS can make your project lighter, cleaner, and a lot more fun to build. Your future self will thank you. ***Bring your laptop and expect to write some (non-AI generated) code!*** Food and drinks will be available. **LOCATION:** 6515 Longshore Loop, Suite 300, Dublin, OH 43017 **FREE PARKING:** 6725 Longshore Street, Dublin, OH 43017

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. So please RSVP for a head count!

Most people use AI like a search box: they type one sentence, hope for the best, and get frustrated when the answer is generic, wrong, or useless. But getting better results from tools like ChatGPT, Claude, Gemini, and other AI systems is not about memorizing magic prompts. It is about learning how to give the AI better context. In this beginner-friendly session, we’ll break down how to make AI dramatically more useful by improving the way you communicate with it. You’ll learn how to give clearer instructions, provide examples, set constraints, ask for better output formats, and use follow-up questions to turn a mediocre answer into a genuinely useful one. We’ll cover practical techniques you can use immediately for work, learning, writing, coding, planning, research, and everyday problem solving. We’ll also touch on why these same ideas show up in more advanced AI systems, including RAG, agents, evaluations, and AI workflows. No technical background required. Bring your curiosity, your questions, and maybe one real task you wish AI was better at helping you with. **What you’ll learn:** * Why “better prompting” is really about better context * How to structure requests so AI gives more useful answers * How to use examples, constraints, and output formats * How to iterate when the first answer is not good enough * How these skills connect to more advanced AI workflows This meetup is for anyone who wants to move beyond basic ChatGPT usage and start getting more practical value out of AI. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.